CN103619393B

CN103619393B - Interface including wrap-up bridge of the nose part

Info

Publication number: CN103619393B
Application number: CN201280029072.8A
Authority: CN
Inventors: G·J·奥尔森; P·D·A·贝恩; L·E·伊万斯; M·R·斯蒂芬森; C·R·普伦蒂斯; B·T·L·伊普; T·W·斯皮尔; M·A·麦克拉伦; R·帕特尔; B·M·豪沃思; J·D·哈伍德
Original assignee: Fisher and Paykel Healthcare Ltd
Current assignee: Fisher and Paykel Healthcare Ltd
Priority date: 2011-04-15
Filing date: 2012-04-13
Publication date: 2016-11-30
Anticipated expiration: 2032-04-13

Abstract

A kind of interface for positive pressure therapy, including a face shield assembly, a head grip assembly and a connectivity port assembly.This face shield assembly includes a containment member, and this containment member has a top, and this top is movably connected on the bottom of an one, and wherein during this top is relative to the hinge movement of this bottom, this top occurs rolling.This headgear assembly allows to be connected upwardly on this face shield assembly in the side being approximately perpendicular to band tension direction.This connectivity port assembly includes a turning gland with valve member, and this valve member controls the air-flow through the port opened towards user.

Description

Interface including wrap-up bridge of the nose part

Cross-Reference to Related Applications

This application claims the U.S. Provisional Patent Application No. 61/476,188 in submission on April 15th, 2011, in 2011 7 The U.S. Provisional Patent Application No. 61/504,295 months 4 days submitted to and the US provisional patent submitted on October 28th, 2011 Application number 61/553, the priority of 067, these applications are combined in this each via quoting with entire contents.

Invention field

Present invention relates in general to cover on the nose of a user and at least one of mouth to supply under positive pressure The face shield of breathing gas.More particularly, certain aspects of the invention relate to following this kind of face shield, these face shields have relative to The bridge of the nose hermetic unit that another hermetic unit of this face shield moves.

Background technology

Face shield can be used to provide breathing gas to user under positive pressure.Mouth and nose at user is all capped In configuration, full face mask typically will overlay on the bridge of the nose.One single sealing member typically will be around the nose of this user And mouth.

Generally with headgear, this kind of full face mask is fixed on the head of user.In order to reduce gas leakage, allusion quotation fully Being tightened by this headgear, this causes being applied with the pressure raised on the bridge of the nose of user type.Stated differently, since this head Set is tightened, and silicone seal typically applies a load being gradually increased on the bridge of the nose.This pressure can be uncomfortable one Individual source and the most As time goes on may cause decubital ulcer.

Summary of the invention

One target of present disclosure be to provide by improve the most to a certain extent problem above or will at least to the public or Medical circle provides a kind of one or more structures and/or the method for useful selection.

It thus provides it is a kind of for providing the interface of positive pressure respiration therapy.This interface includes a face shield assembly.This face Shade assembly includes a mask seal part and a face shield basis, and this face shield basis is removably connectable to this mask seal part On.This mask seal part includes a mask seal part fixture, and this mask seal part fixture is than at least the one of this mask seal part The rigidity of part is bigger.The configuration of this mask seal part fixture is the most cup-shaped, has the near-end of an opening and one The far-end being typically closed.One antelabium the most pentagonal is around this proximal extension.This mask seal part fixture includes one The individual arc top with outer surface.The most attached along a top of this outer surface, this top between a pair hinge point Closely define one section of mask seal part fixture arc length.Article one, hinge axes extends transversely with the face crossed between the two hinge point Shade assembly, and this top of this mask seal part fixture be oriented at least partially be positioned vertically higher than this hinge Axis.The top of this mask seal part fixture includes a stayed surface.One generally extends through this at the passage of central authorities Among the chamber that face shield fixture and entering is limited by this mask seal part.This mask seal part includes being configured to need The flexible upper being positioned on the nasal region of a user.This mask seal part top is positioned to be positioned vertically higher than This hinge axes.This mask seal part top includes having reduction had between the two of stiffness of increase regions The region of stiffness.This have reduction stiffness region can rolling (rolling) to allow this mask seal part top phase This mask seal part fixture is pivoted.One of the two region of stiffness with increase is positioned adjacent to one Another in the region of the stiffness that minor radius bending section and the two have increase is positioned adjacent to a rib Part.This minor radius bending section and this strengthening part define two borders, on this top around the process of this pivot axis In the top of this mask seal part between the two border, show rolling.This mask seal part top has that to be adjacent to this little One the first length of curve of radius bend and second length of curve being adjacent to this reinforcement band.This first curve is long Degree can be less than this second length of curve.This length of curve moves away this mask seal part fixture along with measurement position and increases Add.This face shield basis overlay on this mask seal part fixture at least some of on.This face shield basis include first depression and One the second depression.This first depression and this second depression are to put down relative to central authorities on this face shield basis of substantially halving Face is symmetrically positioned.This first depression and this second depression each include the vertical size more than lateral dimension.This face shield base Plinth also includes the wall defining a central opening.This wall extends to this generally logical in central authorities of this sealing member fixture In road.One connectivity port assembly includes the elbow terminating in a spherical component.The size of this spherical component is by really Determine into and be configured to this wall needed by limiting this central opening and accommodated.This connectivity port assembly also include one can The rotating member removed.This removable rotating member is fixed by a lever.This lever overlays on a port.Should Port optionally can cover with a flap.This flap also is able to the centre gangway closing in this elbow.When this elbow When being connected on this face shield, this port openings is in the general direction of this face shield.One head grip assembly includes on a pair Portion's band and a pair bottom band.This to one of top band and this one of bottom band is connected to first fixture On.This in the band of top another and this another in band of bottom is connected on second fixture.This is years old One fixture and this second fixture can be fixed in these depressions on this face shield basis, so by being approximately perpendicular to band tension force One side in direction moves up and makes these fixtures engage in these depressions.

In some configurations, this mask seal part is a full face mask.

In some configurations, this mask seal part fixture is integrated in this mask seal part, so makes this face shield close Sealing fixture is inseparable with this mask seal part.

In some configurations, this face shield basis is removably connectable on this mask seal part.

In some configurations, in the outer surface rolling on this top to the stayed surface of this mask seal part fixture, and should Stayed surface defines an outer surface on the top of this mask seal part fixture.

In some configurations, compared with the region of the stiffness with these with increase, the region of this stiffness with reduction is wrapped Include the region of a thickness with reduction.

In some configurations, the top of this mask seal part includes limited by first wall and second wall Individual summit, and this strengthening part is along at least some of of this first wall and extending at least partially along this second wall.Preferably Ground, this strengthening part extends across this summit on the top of this mask seal part.

In some configurations, the two ends of this strengthening part are all ended in generally vertical direction higher than these hinge points One position.

A kind of face shield assembly can include a mask seal part.This mask seal part includes under a top and one Portion.This top is pivotable relative to this bottom.This top includes the region of a stiffness with reduction, this zone location Between first border and a second boundary.This first border is the strength in the region by the stiffness than this with reduction Spend what big degree without a break limited.This second boundary is that the stiffness in the region by the stiffness than this with reduction is big Stiffness limits.When this first border is moved towards this second boundary, the region of this stiffness with reduction is single at one Side upsweep (buckle) to limit a material wound section (roll of material), this material wound section along with this One border continues to move towards this second boundary and change in size.

In some configurations, the region of this stiffness with reduction is conducive to the top of this containment member relative to this sealing The movement of the bottom of component.Preferably, this top includes a bridge of the nose part of this face shield, and this first border towards this The movement on two borders is conducive to this nose bridge split-phase movement for this bottom of this face shield of this face shield.

In some configurations, this second boundary is positioned between this top and this bottom.Preferably, this face shield wraps further Include a mask seal part fixture of the rigidity for this mask seal part with increase, and this second boundary is edge The location, an end of this mask seal part fixture.It is highly preferred that this material wound section overlays on this mask seal part fixture At least some of on.

In some configurations, this first border limits along a strengthening part.Preferably, this strengthening part includes One plastic cuff.

In some configurations, the region of this stiffness with reduction is defined as this first border have one The thickness of individual reduction.

In some configurations, this second boundary is to be limited by a turning with minor radius.

In some configurations, this rolling section this mask seal part at least some of on extend.

In some configurations, when this first border is moved completely towards this second boundary, this rolling section overlays on this face shield Sealing member fixture at least some of on.

A kind of face shield assembly can include a mask seal part.This mask seal part includes a nasal region and a mouth District.This nasal region and this mouth region are integrally-formed.This nasal region is moveable relative to this mouth region, so makes by this nasal region The big holding of power applied in multiple positions causes constant, and the power applied by this mouth region increases.

A kind of face shield assembly includes the mask seal part being connected on a head grip assembly.This mask seal part is joined It is set to the nasal bridge region for one user of cincture and mouth region.This mask seal part includes for when headgear assembly is tightened This nasal bridge region is applied the power of a constant and this mouth region is applied the device of the aptychus of cumulative power simultaneously.

A kind of face shield assembly includes a sealing member.One of the face that this sealing member includes engaging a user convex Edge.On the basis of this sealing member is removably connectable to a face shield.This face shield basis includes first opening and one Two openings.This first opening receives first fixture from a relevant header grip assembly and one second with this second opening Fixture.This face shield basis farther includes the path being generally positioned between this first opening and this second opening.Should Path is adapted for receiving an air tube adapter.

In some configurations, this face shield assembly farther includes a mask seal part fixture, this mask seal part fixture On the basis of being connected on this mask seal part and being removably connectable to this face shield.Preferably, this face shield basis overlays on On the substantial portions of this mask seal part fixture.It is highly preferred that this face shield basis includes a neighboring, and along face shield Basis neighboring, define that at least one caves in the position overlayed on this mask seal part fixture.

A kind of face shield assembly includes a mask seal part.This mask seal part includes that being adapted for contacting one makes One proximal rim of the face of user.This mask seal part includes a surface towards far-end.One face shield basis includes One neighboring, and one cover surface extend from this neighboring.It is close that this covering surface, face shield basis overlays on this face shield Sealing should towards far-end surface at least some of on so that this covering surface, face shield basis on a distal direction with Spaced towards far-end of this mask seal part, thus this covering surface, face shield basis and this mask seal part towards The surface of far-end provides a kind of dampness rain that reduces to this face shield assembly and washes the buffer action of (humidity rainout).

A kind of headgear assembly is configured for being fixed on the head of a user face shield assembly.This headgear Assembly includes a belt assembly.This belt assembly includes a postbrachium, upper arm and underarm and at least one bizet arm (crown arm).This upper arm and underarm define multiple arc area, and the shape of these arc areas is determined to be at least Ear partially around a user.One soft edging is attached at least some of of the periphery of this belt assembly On.

In some configurations, this belt assembly includes that a semi-rigid band and this softness edging have been docked to this most just On property band not overlapping with this semi-rigid band.In some configurations, this semi-rigid band include first thickness and This softness edging includes second thickness, and wherein this first thickness is roughly the same with this second thickness.In some configurations, should Semi-rigid band includes that a thickness and this softness edging are thinner than this thickness at least one region.In some configurations, This semi-rigid band includes that a thickness and this softness edging are thicker than this thickness at least one region.At some configurations In, this softness edging forms a bulbous end portion of this semi-rigid band.

A kind of clamp assembly is configured for being fixed to by headgear on a face shield assembly.This clamp assembly includes one Enclosing cover and an inner lock buckle (inner catch).This inner lock buckle is configured for being attached to this and outer covers, thus is retained on On one or more bands of a head grip assembly.This inner lock buckle includes an elongated line of rabbet joint and a circular open.This is long The shape line of rabbet joint can extend along an elongated axis and can have a width transverse to this elongated axis.This circular open Can have a diameter more than this width.When band is attached on this enclosing cover and this inner lock buckle, this elongated axis edge Extend transverse to a direction of these bands.

A kind of elbow assembly is configured for being connected on an air conduit face shield assembly.This elbow assembly Including an elbow.This elbow includes inner and outer wall and defines an air flowing ditch between this inwall and outer wall Road.This inwall includes a port on the side of this elbow.One sleeve is connected with this elbow.This sleeve includes a valve Lobe.When this flap is in a primary importance, this flap blocks this port at least in part and allows from this air conduit Gas pass to a user via this elbow, and when this flap is in a second position, this flap is at least part of Ground blocks this air conduit, thus allows gas to flow to this sleeve via this port and this air flow channel from this user An outside position.This air flow channel can guide air to leave this side of this elbow.

In some configurations, this air flow channel includes two air flow channels.In some configurations, this sleeve enters One step includes the protrusion (bump) extended around outer surface of this sleeve and to be adjacent to of this protrusion recessed Fall into.In some arrange, this protrusion and this depression are adapted for receiving a rotary part, and this rotary part is combined with For the ridge engaged with this protrusion.

Accompanying drawing explanation

With reference to the following drawings, these and other features, aspect and the advantage of embodiments of the invention will be described.

Fig. 1 is to adorn oneself with the interface that some feature, aspect and the advantage according to the present invention arranges and configure The front view of user.

Fig. 2 is the side view of the user of the interface wearing Fig. 1.

Fig. 3 is the perspective view of the mask seal part dough-making powder shield closure fixture of the interface of Fig. 1.

Fig. 4 is the side view of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Fig. 5 is the rear view of the mask seal part fixture of Fig. 3.

Fig. 6 is the rear front view of the mask seal part fixture of Fig. 3.

Fig. 7 is the side front view of the mask seal part fixture of Fig. 3.

Fig. 8 is the top plan view of the mask seal part fixture of Fig. 3.

Fig. 9 is the anterior elevational view of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Figure 10 is the rear front view of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Figure 11 is the side front view of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Figure 12 is the amplification cross sectional view of a part for the mask seal part dough-making powder shield closure fixture of Fig. 3.

Figure 13 is the mask seal part of the interface of Fig. 1, mask seal part fixture and the front perspective view on face shield basis.

Figure 14 is the mask seal part of Figure 13, mask seal part fixture and the cross sectional view on face shield basis.

Figure 15 is the mask seal part of Figure 13, mask seal part fixture and the side front view on face shield basis.

Figure 16 is the mask seal part of Figure 13, mask seal part fixture and the top plan view on face shield basis.

Figure 17 is the perspective view of the connectivity port assembly of Fig. 1.

Figure 18 is the side front view of the connectivity port assembly of Figure 17.

Figure 19 is the rear front view of the connectivity port assembly of Figure 17.

Figure 20 is the sectional side elevation view of the connectivity port assembly of Figure 17.

Figure 21 is the cross-sectional perspective view of the connectivity port assembly of Figure 17.

Figure 22 is the perspective view of the clamp assembly of Fig. 1.

Figure 23 is the cross sectional view of the clamp assembly of Figure 22.

Figure 24 is analogous to a cross sectional view of the cross sectional view of Figure 12, it is shown that be configured at mask seal A mask seal part of rolling under a part for part fixture 112.

Figure 25 is analogous to the cross sectional view of the cross sectional view of Figure 14, and wherein mask seal part fixture has the chi of reduction Very little.

Figure 26 is analogous to the cross sectional view of the cross sectional view of Figure 14, wherein eliminates mask seal part fixture.

Figure 27 is analogous to the another one cross sectional view of the cross sectional view of Figure 14, wherein eliminates mask seal part folder Tool.

Figure 28 is that the diagram showing the functional relationship between load (or power) and the face shield elongation on user health is retouched Paint.

Figure 29 is the perspective view of a skeleton compatible with the headgear assembly of Fig. 1 and Fig. 2.

Figure 30 is the zoomed-in view of the end regions of a underarm of Figure 29.

Figure 31 is the amplification cross sectional view of the end regions of Figure 30.

Figure 32 is the perspective view of the face shield assembly including a face shield, multiple fixture and multiple band.

Figure 33 is the side view of one of two fixtures of Figure 32.

Figure 34 is the decomposition view of the fixture of Figure 33.

Figure 35 is the top view of the inner lock buckle of the fixture of Figure 33.

Figure 36 is the front view on a face shield basis, and this face shield basis has two mounting posts, and the one of a fixture Individual inner lock buckle is installed in left mounting post.

Figure 37 is the front view of the another kind of configuration on a face shield basis, and this face shield basis has two mounting posts, and One fixture of another kind of configuration is installed in the left mounting post on this face shield basis.

Figure 38 to Figure 47 is fixture and relevant face shield and the multiple other configuration of mounting post.

Figure 48 is the side view of the another kind of configuration of a rotary components.

Figure 49 is the decomposition view of the rotary components of Figure 48.

Figure 50 is the cross sectional view taken along the line 50-50 of Figure 48.

Figure 51 is the cross sectional view taken along the line 51-51 of Figure 48.

Figure 52 is attached to the side view of the skeleton of the Figure 29 on a user head.

Figure 53 is attached to the rear view of the skeleton of the Figure 29 on a user head.

Figure 54 is that to have the one of the abaculus (panel) being used together with the face shield assembly in respiratory therapy field soft The perspective view of property headgear.

Figure 55 is the zoomed-in view of the end regions of the arm of Figure 54, and this end regions has and is attached to an embedding thereon Fabric clasp joint sheet (tab).

Figure 56 is the plane graph of the end regions of Figure 55.

Figure 57 A is that this headgear does not has abaculus attached at the rearview of the previous head set applying power to multiple underarms of headgear Receive on test model.

Figure 57 B is the rearview of the headgear of Figure 57 A, illustrates this headgear when applying a power to multiple underarms of headgear The displacement of a behind band part.

Figure 58 A to Figure 58 D is the multiple alternate configuration of the compatible abaculus for being used together with the headgear of Figure 54.

Figure 59 is the assembly being combined with and having the headgear that wing formula bracelet (winged buckle) connects.

Figure 60 is a part with the headgear that wing formula bracelet connects.

Figure 61 is the top view of a wing formula bracelet in the wing formula bracelet of Figure 59 connects.

Figure 62 is the side view of the wing formula bracelet in the wing formula bracelet of Figure 59 connects.

Detailed description of the invention

With reference first to Fig. 1 and Fig. 2, it is shown that an interface 100 is in place on a user U.Interface 100 includes permissible A kind of interface in respiratory therapy field.Interface 100 has special practicality for the positive pressure respiration therapy of various ways Property.Such as, interface 100 may be used for giving continuous positive airway pressure (" CPAP ") treatment.Additionally, interface 100 may be used for variable Positive Airway Pressure (" VPAP ") treatment and BPAP (" BiPAP ") are treated.This interface may be used for any suitably CPAP system.

Interface 100 can include any suitable face shield configuration.Such as, some feature, aspect and the advantage of the present invention Go for nose cup, full face mask, oral nose mask or any other malleation face shield.The face shield shown is an all cover Face shield.The interface 100 shown generally comprises 102, connectivity port assembly 104 of a face shield assembly and a headgear Assembly 106.

With reference to Figure 13, face shield assembly 102 generally comprises a mask seal part 110 and a face shield basis 114, this face Shield closure can include a mask seal part fixture 112.As will be described, mask seal part fixture 112 preferably will Mask seal part 110 is connected on face shield basis 114.Although the mask seal part 110 dough-making powder shield closure fixture 112 shown It is formed separately and is fixed together, but in some configurations, mask seal part 110 dough-making powder shield closure fixture 112 can To be integrated into a single part.In some configurations, mask seal part 110 is overmolded into mask seal part fixture On 112.

With reference to Fig. 3, mask seal part fixture 112 be specific surface shield closure 110 the most more rigid, more stiffening or less Flexible.In some configurations, mask seal part fixture 112 is to be formed by a kind of makrolon material.In some configurations, Mask seal part fixture 112 is to be formed by a kind of makrolon material or other rigidity or semi-rigid material at least partially. In some configurations, mask seal part fixture 112 is at least partly to be formed by silicone or another kind of suitably material.Such In configuration, compared with the most flexible part of mask seal part 110, at least silicone portions of this mask seal part fixture 112 Can be formed as relatively thick.In the configuration shown, mask seal part fixture 112 opposite shield closure 110 provides structure Property support.

As shown in Figure 14, mask seal part fixture 112 can limit the major part of face shield assembly 102.It is as directed, The face shield basis 114 shown overlays on the signal portion of mask seal part fixture 112.With reference to Figure 25 to Figure 27, as desired , face shield assembly 102 is configured with multiple different structure.For example, referring to Figure 25, mask seal part fixture 112 A finite quantity is extended from the seam with mask seal part 110.In the configuration shown in fig. 25, face shield basis 114 Overlay on mask seal part fixture 112 at least some of on, and mask seal part fixture 112 is at one of mask seal part 110 The surrounding divided defines a very limited amount of wheel rim shape configuration.With reference to Figure 26, mask seal part fixture be omitted altogether and Mask seal part 110 is directly overmolded on face shield basis 114.But, in some configurations, mask seal part 110 He Face shield basis 114 may be configured so that both parts can be separated.Such as, as shown in Figure 27, mask seal part 110 can include a peripheral outer lips 111, and face shield basis 114 can include a periphery ditch receiving this peripheral outer lips 111 Groove 115, so makes mask seal part 110 can be removably secured on face shield basis 114.In some configurations, can To use other suitable modes to be fixed on face shield basis 114 by mask seal part 110.Although it addition, Figure 27 is shown Configuration show the embodiment not having mask seal part fixture 112, but mask seal part fixture 112 and face shield basis 114 have been combined into face shield basis 114.

With reference to Fig. 5, the mask seal part fixture 112 shown includes a generally cup-shaped configuration.One near-end 120 limits Determine an open end of the mask seal part fixture 112 shown, and a far-end 122 has defined shown mask seal The end of one general closing of part fixture 112.In the configuration shown, near-end 120 typically by antelabium 124 institute around. When observing from the back side, antelabium 124 the most pentagonal (seeing Fig. 5).As shown in Figure 7, a wall 126 is general with one The mode planting arc is skimmed over forward.The mask seal part fixture 112 shown is provided a kind of three-dimensional by the arcuate shape of wall 126 Configuration.

With continued reference to Fig. 7, the configuration on a top 130 of the mask seal part fixture 112 shown is generally arcuate in shape 's.Additionally, this generally arcuate in shape configuration of the mask seal part fixture 112 shown is configured for accommodating bigger nose Son, but the elongation not extending up to image planes shield closure 110 on nose is the biggest, goes out as shown in Figures 1 and 2 's.

With reference first to Fig. 3, the top 130 of the mask seal part fixture 112 shown preferably includes two accurate measurement.First First, an arc length 132 can extremely be limited along the top on the top 130 of the mask seal part fixture 112 shown.Arc length Between two flex points 134 that 132 girths that can be limited at the mask seal part fixture 112 that edge is shown are found out.

As show in Figure 7, the top 130 of the mask seal part fixture 112 shown also includes a side profile Radius 136.As directed, top 130 can have a side profile radius 136 the most cumulative, so that along with away from upper The distance of end increases then this radius and somewhat increases.In some configurations, top 130 can include the side of a constant Profile radius 136 or a side profile radius decrescence.Advantageously, this most cumulative side profile radius 136 is at face shield In 100, at the nose of user, providing a volume increased.

With reference to Fig. 3 and Fig. 6, mask seal part fixture 112 preferably includes at least two depression 140.At the configuration shown In, mask seal part fixture 112 includes that two depressions 140, the two depression are disposed in generally vertical central authorities and put down The both sides (seeing Fig. 6) of face CP.This generally vertical central plane CP preferably corresponds to the median plane of user And the mask seal part fixture 112 shown is divided into the two halves being substantially mirrored into.The two depression 140 is being shown Mask seal part fixture 112 defines two depressions being typically surrounded.The depression 140 shown includes multiple other recessed Fall into 142, be used for providing for reasons discussed below enough gap, enter by face shield assembly 102 institute with limit The amount of the invader in the nasal region of the chamber limited.

The mask seal part shown also include being limited by a wall 146 one substantially centre gangway 144.Opened up In the configuration shown, wall 146 typically surrounds passage 144.Preferably, the configuration of wall 146 is generic cylindrical and extends through Wall 126.Other configurations are possible.

With reference to Figure 14, mask seal part 110 includes a flexible portion, and this flexible portion deviates from mask seal part fixture The near-end 120 of 112 and extend.In the configuration shown, mask seal part 110 is overmolded into mask seal part fixture Mask seal part 110 and the combination of mask seal part fixture 112 is made to be formed an integration and the most inseparable on 112 Assembly.In some configurations, attempt parting plane shield closure 110 dough-making powder shield closure fixture 112 and this interface can be caused at these Damage between parts and/or the damage of the one or both in mask seal part 110 dough-making powder shield closure fixture 112.As with Described by upper, it is possible to use mask seal part fixture 112 is connected on mask seal part 110 by other assemblies.But, The configuration shown advantageously creates a kind of structure that is easy to clean and that safeguard.

With reference to Fig. 4, mask seal part fixture 112 is preferably arranged for so that in it and one of mask seal part 110 Wheel rim 150 flushes generally.In the configuration shown, mask seal part 110 includes connect a top 154 one Portion of small radius 152 relatively.The top 154 of mask seal part 110 is configured for extending across the nasal region of user.One In a little configurations, top 154 is configured for extending across a ridge area of user U.

Top 154 is that the bottom 156 with containment member 110 is connected.As show in Figure 9, bottom 156 is from face shield Sealing member fixture 112 laterally stretches out.Additionally, as respectively at Fig. 4 and demonstrated in Figure 10, bottom 156 backward and to Inside hold.On the nearside of full face mask assembly 102, top 154 combine with bottom 156 and together with limit one and contact The flange 160 of face, illustrates the flange of this contact face in Fig. 10.The flange 160 of contact face is configured in and makes Under the lower lip of user, extend along the outside of mouth, upwardly extend and extend across the bridge of the nose of this user along cheekbone.Therefore, The flange 160 of the contact face shown defines the opening 162 of a generally tear-drop shaped.When face shield assembly 102 is put Time on the face of user, flange 160 will lie on outside the bridge of the nose of this user, cheekbone, mouth and under lower lip Side.When supplying positive pressure air, mask seal part 110 is by expanding and being sealed on the face of user, convex to be reduced or eliminated The probability of gas leakage between edge 160 and the face of this user.

As shown in the dotted line in Figure 11, the top 154 of mask seal part 110 is designed to rolling to face shield assembly On one outer surface 170 of 102.In the configuration shown, it is wound into and face shield to the outer surface smoother of mask seal part 110 The outer surface of sealing member fixture 112 abuts, and so makes the outer surface of mask seal part fixture 112 form a stayed surface. In some configurations, top 154 rolling includes the outer surface of mask seal part fixture 112 to this outer surface 170 thereon At least partially.In some configurations, top 154 rolling almost only includes mask seal part to this outer surface 170 thereon The outer surface of fixture 112.In some configurations, in top 154 rolling to another part of mask seal part 110.At some structures In type, in top 154 rolling to mask seal part basis 114.

With reference to Figure 12, in order to assist the rolling on top 154, top 154 can have the thickness of change or the stiffness of change. In configuration shown in fig. 12, top 154 includes the configuration of a kind of thickness/thin/thick.In other words, in order to cause top 154 Between flange 160 and the minor radius 152 of this contact face, rolling in a region of mask seal part fixture 112, Can be in conjunction with the region 172 spending reduction without a break.In the configuration shown, the region 172 that stiffness reduces is incorporated into face shield In sealing member 110.Stiffness reduce region 172 reduce or eliminate mask seal part 110 except desired rolling region it Outer region occurs curling or the probability adversely deformed.

Although the configuration shown employs a region of the thickness with reduction, but other can be used to be used for providing The means in the region 172 that stiffness reduces cause containment member 110 rolling.For example, it is possible to selected by material or material behavior The material of containment member 110 is configured with the stiffness of reduction.In addition it is possible to use a kind of composite provides and has The stiffness reduced or a region of rigidity.Further, it is possible to use the combination of any suitable technology.But, it is configured to tool The shown region 172 having the thickness of reduction provides a kind of plain mode realizing the region 172 that stiffness reduces.Additionally, pass through What regulation stiffness reduced the stiffness in region 172, can control for causing the power needed for the rolling of region 172, and this power controls The power being applied on the nose of user.Such as, by change stiffness, the movement in moving range can become increasingly or It is obstructed decreasingly.

When top 154 includes the region 172 with the stiffness of reduction, in internal pressure, as in positive pressure therapy scheme Under those pressure run into, outward expansion is tended on the top 154 of mask seal part 110, and this expansion is considered as by limiting Large area silicone and do not have the region 172 of this stiffness with reduction of obvious structure to be caused.With reference to Fig. 4 and Tu 12, in order to reduce the structure that the expansion in top 154 spreads and provides enhancing in top 154, can along top 154 at least A part positions one or more strengthening part, such as a band 174.Relative to silicone or form mask seal part 110 Other materials, band 174 can a portion being formed of bigger by rigidity or the stiffness feature with increase a kind of material Part.Such as, (wherein this region is in the region that thickness significantly increases for having the region 172 of stiffness of reduction Formed by the identical material forming mask seal part 110) can be used to increase this strengthening part or these strengthening parts Stiffness.

In some configurations, band 174 can be encased by the material of mask seal part 110 at least in part The parts being formed separately.In the configuration shown, band 174 can be the plastic components of a common molded, or mask seal Part 110 can be overmolded on band 174.In some configurations, band 174 can be had by for peripheral region The part having the top 154 of the stiffness of enhancing limits.Such as but not limiting, band 174 can be by having increase One part of thickness, there is part producing the different materials of the stiffness increased or dissimilar material properties etc. limit Fixed.

With reference to Fig. 9, band 174 is along at least some of extension on the top 154 of mask seal part 110.When from above seeing When examining, the top 154 of this face shield includes a summit 180.Summit 180 can be defined as a point of mask seal part 110 End, a top and an angular top, this summit 180 is positioned near the nose of user in use.Shown Configuration in, first wall 182 and second wall 184 are assembled at summit 180.

In some configurations, at least some of and second wall 184 of the first wall 182 at least some of by one or more Parts or structure (such as band 174) are strengthened.In the configuration shown, this strengthening part or these strengthening part (examples As band 174) strengthen at least some of of at least some of of the first wall 182 and the second wall 184.In some configurations, This strengthening part or these strengthening parts (such as band 174) strengthen at least some of, second wall of the first wall 182 At least some of and the summit 180 of 184.

With continued reference to Fig. 9, the band 174 shown has a first end 186 and relative with first end 186 Individual the second end 188.In some configurations, band 174 can be separately formed with mask seal part fixture 112 and by one Individual or multiple compliant member and be attached on mask seal part fixture 112.In some configurations, mechanical hinge structure can be passed through Band 174 is connected on mask seal part fixture 112.In the configuration shown, first end 186 and the second end 188 are positioned on the side identical with summit 180 of hinge axes H.Preferably, first end 186 and the second end 188 towards Summit 180 and spaced apart with hinge axes H.

As shown in Figure 12, bending section 152 and be adjacent to this harder region with the region 172 of the stiffness of reduction (such as, having the region in thicker cross section) contributes to causing this to have the rolling in the region of the stiffness of reduction 172.In other words Say, this can be occurred to have the controlled curling in the region of the stiffness of reduction 172 under these neighbouring assistance compared with hard portion.Additionally, It is positioned adjacent at bending section 152 further help in by an edge of the most more rigid mask seal part fixture 112 Cause the rolling in the region 172 that this stiffness reduces.In some configurations, there is the region 172 of stiffness of reduction by one One border and a second boundary define, and wherein, have a region of stiffness of reduction relative to this, this first border and this Two borders have the stiffness of increase.Such as, in the configuration shown, this first border is limited by band 174 or alongside should Band, this second boundary is then limited by bending section 152 or this bending section alongside.In some configurations, this second boundary can Limited with an edge by the bigger mask seal part fixture 112 of rigidity or this edge alongside.In some configurations, permissible Between mask seal part 110, the region 172 that is positioned at mask seal part fixture 112 and this stiffness with reduction one Individual part limits this second boundary.

Along with the top 154 of mask seal part 110 shifts about hinge axes H, the size of rolling section increases.In other words Say, along with this first border is moved initially towards this second boundary, mask seal part 110 defines rolling section.Along with this First border continues to move towards this second boundary, and the size of rolling section continues to increase.Therefore, in the shown configuration of Figure 11, (as shown with dotted line) in the shifting process on top 154, the rolling Duan Congwu defined in top 154 start and by Cumulative add.Preferably, the rolling between this first border and this second boundary is produced between this first border and this second boundary A single bending section or zigzag part are given birth to.This single bending section create close to this bending section position, size along with The supporting leg that this first border is moved towards this second boundary and increased.In other words, by this first border towards this second boundary Movement produced by rolling the most do not produce plication outward appearance, such as the configuration of band pleat.

Referring again to Fig. 3, mask seal part 110 can have the region 172 helping lend some impetus to this stiffness with reduction A kind of geometry of rolling is continued after rolling starts.In general, can be from hinge axes H and mask seal part 110 One the first intersection point, upwards and cross over the top 154 of mask seal part 110 and to return downward to hinge axes H close with face shield One the second intersection point of sealing 110, limits multiple arc length.

As shown in Figure 3, the mask seal part 110 shown includes that at least one first arc length A(is shown in broken lines), one Individual second arc length B(illustrates with dashed dotted-line) and the 3rd arc length C(illustrate along the base portion of band 174).First arc length A is excellent Choosing is arc length that be longer than mask seal part fixture 112, that be directly adjacent to the first face shield arc length A.Second arc length B is positioned at the first arc Between long A and the 3rd arc length C, and the second arc length B is preferably shorter than the 3rd arc length C and is longer than the first arc length A.Real at some Executing in example, these arc length stably increase from bending section 152 or from another region near outer surface 170 towards band 174 nearside Add.In other words, along with angle [alpha] (seeing Fig. 4) increases from the first arc length A, arc length increases generally.In some configurations, this It can be constant that a little arc length (that is, increase with angle of entry α degree) from front to back；But, by making these arc length deviate from this receipts The volume part that starts of section and increase, summit 180 further movement in a distal direction can cause mask seal part 110 its from Continuation rolling with it and on outer surface 170, as shown in fig. 11.

Referring again to Fig. 4, when observing from side profile, the top 154 of the mask seal part 110 shown also includes one Individual radius variable.As demonstrated, R1 > R2 > R3.Therefore, in the mask seal part 110 shown, radius is along with angle Increase and near to far reducing.In some configurations, this radius need not reduce by this way；But, radius decrescence It is believed to be helpful in the rolling of mask seal part 110.

Additionally, mask seal part fixture 112, a radius r1 starting from hinge point H be preferably smaller than mask seal part The radius R3 of 110.However, it is contemplated that the pliable character of mask seal part 110, radius r1 is the most roughly the same with radius R3, And still make mask seal part 110 rolling on mask seal part fixture 112 simultaneously.But, in the configuration shown, radius r1 And the difference between radius R3 creates a kind of compensation.This compensation provides following ability: somewhat increase side profile radius 136(is as described above), and not appreciable impact mask seal part 110 rolling is to the ability on mask seal part fixture 112.As If fruit does not provide this skew, then the ability increasing side profile radius 136 will be very limited amount of.

As discussed above, flange 160 is around the opening 162 of this generally tear-drop shape.As it is known, Zernike annular polynomial is permissible It is defined as the circumferential stress formed in a cylindrical part due to internal pressure.Therefore, expansion is attempted when a ring Time, Zernike annular polynomial increases.It is thought that due to put breathing mask and the Zernike annular polynomial that causes can be certain of user uncomfortable (outstanding It is in nasal bridge region) a source.The bottom 156 of the face shield assembly 102 shown typically is secured in place, and nose Or top 154 then moves relative to the nose of user.Due to above-mentioned rolling action, the full face mask assembly shown 102 rollings and leave nose, it reduce the generation of cumulative Zernike annular polynomial, especially around the bridge of the nose.Therefore, this wrap-up Cover configuration provides a kind of means for maintaining or reduce Zernike annular polynomial during the storing of this face shield.

As discussed above and as shown in Figure 11, in the configuration shown, the mask seal part shown Top 154 rolling on outer surface 170 of 110.Rolling on OFP surface make use of and is present in this full face mask group Normal pressure in part, because the ability that the air pressure increased enhances this mask seal part rolling on itself (that is, is being received During volume, the surface that air pressure reduces between two surfaces relative to each other carrying out sliding of this mask seal part is opened Power), and slight expansion contributes to reducing the curling of mask seal part 110, fold or the possibility of undesirable folding Property.Additionally, in some configurations, this outside rolling can provide the top 154 of face shield mask seal part 110 relative to face shield The displacement degree of the bottom 156 of sealing member 110 or a visual cues of angle of displacement.

Instruction for a kind of enhancing of the most rolling degree in the top 154 providing from this face shield to user, it is possible to Use a visual indicator.Such as, in some configurations, can imprint on the region 172 that stiffness reduces or in its vicinity, Embossing or otherwise one scale of arrangement.In some configurations, can be along face shield 100, the region 172 of this stiffness reduction One part of rolling thereon is positioned a scale.In order to improve degree of accuracy, this scale is preferably located at central authorities The rolling degree making the region 172 that this stiffness reduces in position can be maximized.Such as but do not limit, this scale Can be a digital scale or a color gradient scale.

In some configurations, a ratchet or locking mechanism can be combined with this face shield so that stiffness reduces Region 172 can be set at a desired rolling point.A closure element is engaged it is, for example possible to use have The ratchet mechanism (such as, Zipper-type ratchet) of a series of teeth.When the top 154 of this face shield shifts about hinge point, When being removed from the face of user U by face shield 100, this locking mechanism makes top 154 can be maintained at appropriate position. Preferably, this locking mechanism allows the most easily lock release position, if so making this face shield be moved If too remote, this top can be unclamped in a more preferable cooperation position.Therefore, this user can set top 154 The degree of rolling only once, and each follow-up use all will produce phase same level rolling section.

By rolling, top 154(i.e., this containment member touch the bridge of the nose that a part) along with the flange of this face shield 160 apply cumulative pressure to the face of this user and move.Due to this movement, in bottom 156 in the face of this user In the wide pressure limit applied on the remainder in portion, the power that top 154 is applied on the bridge of the nose is constant.Similar Ground, causing top 154 to move required power is constant.As shown in Figure 28, the configuration shown creates this top The complete 25mm of position change, and the power relevant to the movement of this scope has the increase of less than about 0.5N.Owing to being applied to Power on nose is the most constant in a series of angles and in relevant top displacement, therefore at different headgear tension force Under level, the power being applied on the bridge of the nose does not occur significantly to change.Again, Figure 28 illustrates such result, wherein on summit 180 are in the moving range of 5mm to 25mm, and the total of power changes the power change producing about 0.2N.Additionally, due to be applied to nose On power be the most constant in a series of angles, therefore can adjust this face shield and improve and various facial geometry Cooperation, and with limit be applied to sensitivity nasal bridge region on pressure.

When compared with the structure of the geometry being characterized as band pleat, the use of wrap-up configuration provides and significantly changes Kind.First, outside rolling rather than the pleating material that mask seal part has been reduced or eliminated invade to be designed to comprise and make Probability in the chamber of user's nose.Therefore, outside rolling reduces the moving process on top 154 relative to bottom 156 In the probability that contacts with the user nose in this chamber.Secondly, outside rolling rather than pleating provide clean outward appearance And decrease the quantity of external cavity, it is believed that Comparatively speaking this improve user to this all cover face with the assembly of band pleat The consciousness of shade assembly.

With reference to Figure 24, although mask seal part 110 rolling on outer surface 170 shown, this mask seal part is permissible It is configured for the inside rolling at this face shield assembly.In other words, some configurations can use internal rolling.Relatively In outside rolling, internal rolling is less desirable, because normal pressure tends to hinder rolling and because rolling action is inclined to In invading in the chamber receiving nose.On the other hand, relative to outside rolling, internal rolling provide the cleanest outside See, because within any expansion of containment member is contained in mask seal part fixture.

Referring now to Fig. 1 and Fig. 2, face shield assembly 102 includes face shield basis 114, this face shield basis specific surface shield closure 110 Rigidity bigger.Face shield basis 114 can be formed by any suitable material.In some configurations, face shield basis 114 is by one Kind of makrolon material is formed, so so that it can bend for mask seal part 110 and/or mask seal part fixture 112 are attached.

Referring now to Figure 14, it is shown that face shield assembly 102, wherein face shield basis 114 is fixed to mask seal part 110 On.More specifically, in the configuration shown, face shield basis 114 is fixed on mask seal part fixture 112, and face shield Sealing member fixture is to be attached in any suitable manner on mask seal part 110.In some configurations, face shield basis 114 It is connected removedly with mask seal part 110 or mask seal part fixture 112.In some configurations, face shield basis 114 It is fastened togather with the one or both in mask seal part 110 dough-making powder shield closure fixture 112.Preferably, mask seal part 110 dough-making powder shield closure fixtures 112 can remove from face shield basis 114, and snaps connection mask seal part fixture 112 It is fixed on face shield basis 114.

With reference to Figure 14 and Figure 15, the face shield basis 114 shown overlays at least some of of mask seal part fixture 112 On.In some configurations, face shield basis 114 is almost completely covered mask seal part fixture 112.In some configurations, face shield base Plinth 114 has extended across more than half of mask seal part fixture 112.When face shield basis 114 overlays on mask seal part fixture 112 Or time on the substantial portions of mask seal part 110, create a kind of double-deck effect (such as, mask seal part fixture 112 dough-making powder Cover basis 114).Signal portion and mask seal part fixture 112 or the notable portion of mask seal part 110 when face shield basis 114 During split-phase overlap, this bilayer effect provides the buffer action of increase.The buffer action of this increase provide one warmer Inside (such as mask seal part 110 and/or mask seal part fixture 112), in use this generates less wet Airsetting is tied.Preferably, at least some of of mask seal part fixture 112 comes out below face shield basis 114 so that permissible More easily face shield basis 114 is separated with mask seal part fixture 112.As shown in Figure 15, in order to assist face shield basis 114 Mask seal part 110 and/or mask seal part fixture 112 from below separate, and the face shield basis 114 shown is wrapped on near-end Include an outer surface 200.Face shield basis 114 is concave with the multiple parts below accommodating on inner side.In other words, face Cover basis 114 is bowl-type on the distal direction relative to near-end outer surface 200.

Outer surface 200 includes one or more recessed portion 202.Preferably, recessed portion 202 includes being positioned at face shield At least two recessed portion 202 on the both sides opposite each other on basis 114.Recessed portion 202 is configured for receiving thumb With a finger, so allow to more easily be moved in the front of face shield basis 114 mask seal part fixture 112 from below Remove.Although recessed portion 202 can limit for grasping the assembly below face shield basis 114 to remove the dress on this face shield basis Put but it also may use other configurations multiple, such as but not limited to: outward extending contact pin, extension etc..Though additionally, The recessed portion 202 so shown is disposed on the two opposite sides on face shield basis 114, but these recessed portions 202 can also It is positioned in as desired on top and bottom or other regions.

As shown in Figure 13, face shield basis 114 preferably includes the opening 210 limited by a wall 212.Reference Figure 14 (being a cross section through mask seal part 110, mask seal part fixture 112 and face shield basis 114), defines This wall 212 through the opening 210 on face shield basis 114 preferably coordinates and is defining through mask seal part fixture 112 In this wall 146 of passage 144.As shown in Figure 14, wall 212 and wall 146 can be the most coextensive.Additionally, wall 146, the size and dimension of wall 212 is so that these walls interact to reduce relatively sliding also between wall 146, wall 212 And reduce mask seal part basis 114 and the probability inadvertently separated in mask seal part fixture 112.At some configurations In, wall 146, wall 212 be combined together and decrease by the two wall between interface gas leakage probability.Preferably, Wall 146, wall 212 are fixed together by one taper lock.

Referring now still to Figure 14, wall 212 includes the inner surface 214 of a belt profile.The radius on the surface 214 of belt profile can be through Determine to receive a pommel 220 of a turning gland 222, as show in Figure 17 that.Preferably open up as in Figure 18 Showing, pommel 220 has the surface 224 of a belt profile, and the surface of this belt profile can be snap fit onto on face shield basis In the surface 214 of this belt profile formed in 114.Connection between the surface 214,224 of the two belt profile allows these The most freely sliding in surface, so allows to easily vary the position of turning gland 222.At some configurations In, elbow 222 is configured in the case of not having spherojoint configuration rotating or rotating.

Referring again to Figure 13, face shield basis 114 also includes at least two depression 230.The face shield basis 114 shown includes Two depressions 230.Depression 230 retraction is to stretching out backward in face shield basis 114 and from face shield basis 114.Depression 230 is received In the depression 140 of mask seal part fixture 112.Multiple openings 232 overlay on mask seal part fixture 112 is formed these are another In outer depression 142, these openings are limited by a perisporium 234.

The depression 230 shown is formed so that and all forms a depression 230 in every side on face shield basis 114.These Depression 230 can be positioned so that relative to central plane CP be symmetrical, and this central plane has substantially divided face shield basis 114 equally. In some configurations, as shown in Figure 15, depression 230 has the vertical chi expanded relative to a lateral dimension 242 Very little 240.Similarly, as shown in Figure 15, opening 232 has the vertical chi expanded relative to a lateral dimension 246 Very little 244.

In the face shield basis 114 shown, the part laterally inward of each depression 230 includes a supporting walls 250.? Support wall 250 be oriented to the normal of a substrate surface 248 relative to depression 230 and towards central plane CP.The two is recessed Each in cave 230 is configured for receiving a fixture 252(and sees Figure 22).Once fixture 252 installed In depression 230, supporting walls 250 just helps the rotation limiting fixture 252 relative to depression 230.Additionally, in installation process, this Individual big vertical size contributes to user and is positioned together with fixture 252 by depression 230.

With reference to Figure 22, fixture 252 can have a kind of two-part structure: an enclosing cover 254 and an inner lock buckle 256. In any suitable way band 260 can be fixed on each fixture 252.Fig. 2 illustrates a kind of suitably configuration.? In some configurations, band 260 can be clipped between enclosing cover 254 and inner lock buckle 256.In some configurations, can be on fixture 252 There is provided band 260 by the multiple rings passed or opening or hole.Preferably, a fixture 252 can be simultaneously connected to headgear group On one top band of part 106 and a bottom band.Such configuration is conducive to easily connecting to headgear assembly 106 Easily disconnect with full face mask assembly 102 on full face mask assembly 102 and by headgear assembly 106.

As shown in Figure 23, fixture 252 includes an inclined surface 262.Inclined surface 262 can be positioned at enclosing cover 254 On.Inclined surface 262 and supporting walls 250 cooperation help to carry out determining relative to the depression 203 on face shield basis 114 by fixture 252 To.

Fixture 252 includes an interlock feature 264.Interlock feature 264 is configured for insertion on face shield basis 114 In opening 232 defined in depression 230.Interlock feature 264 can be by the mode being clasped and limited along wall 234 Individual contact pin 236 engages, and this wall defines the opening 232 in face shield basis 114, as shown in Figure 13.Can also be used it Fixture 252 and depression 230 are carried out the mode interlocked by him.

With reference to Figure 23, the interlock feature 264 of the fixture 252 shown includes the U terminating at a trip lever 266 Shape parts 268.U-shaped end 268 stretch out enough distance with allow be attached with contact pin 236, but do not reach as far as The bottom allowing the additionally depression 142 in mask seal part fixture 112 stops interlock feature 264 to be properly inserted in opening 232. During being connected on face shield basis 114 by fixture 252, U-shaped end 268 initially contacts with a wall of opening 232.? In the configuration shown, U-shaped end 268 contacts the wall 234 of this opening 232 during insertion, and fixture 252 is existed by wall 234 Guide in place in depression 230.During fixture 252 is connected on face shield basis 114, opening 232 or limit this opening One or more surfaces of 232 generally make fixture 252 relative to face shield basis 114 alignment.

The end of trip lever 266 stretch out and through an opening 270 being limited by a wall 272.Preferably, release The end of lever 266 is stretched out and is passed 270 1 sections of enough distances of opening to allow to be easily manipulated by this trip lever 266.With Close this interlock feature 264 U-shape mode to move this trip lever 266 allow by interlock feature 264 from contact pin Removing in the joint of 236, this contact pin is positioned in this wall 234 of the opening 232 defined in face shield basis 114.

Figure 32 to Figure 39 illustrates the multiple other configuration of clamp assembly 252, and these configurations are configured for face Shade assembly 102 is fixed on the head of a user.Such as, the fixture 252 of Figure 32 and Figure 33 has a protruding edge 400(is also sometimes referred to as a finger-like contact pin 400), the edge of this projection makes this user can be easily by headgear 106 Separate with face shield assembly 102.Protruding edge 400 may be oriented so that, they are only pulled back and just can make by user Fixture 252 departs from from face shield basis 114.From face shield basis 114, take off one or more fixture 252 allow face shield assembly 102 easily remove from the head of user.In the process carrying out relative to face shield assembly 102 being attached and removing by headgear 106 In, protruding edge 400 provides a grasping point.Such as, during fixture 252 is removed from face shield assembly 102, On the two opposite sides at the edge 400 that the thumb of user and forefinger can be placed on projection.Additionally, user can hold fixture 252 and in whole face shield engagement process, maintain this gripping effect.This eliminates and grasps bundle the most blindly With the needs of 260.It also allows for user and is attached this fixture 252 when maintaining on the edge 400 being held in projection, it is moved Remove and again it is attached.

Figure 34 illustrates the decomposition view of the fixture 252 of Figure 32 and Figure 33.Fixture 252 includes an enclosing cover 254 and one Inner lock buckle 256.Inner lock buckle 256 includes that one or more line of rabbet joint 402 is to receive the far-end of headgear band 260.Inner lock buckle 256 also may be used To include some pressure protrusions, as shown about the configuration of Figure 38 and Figure 39.These pressure protrusions are at enclosing cover 254 provide extra pressure on inner lock buckle 256, so make them be fixed to each other and go up.In a kind of configuration, headgear Band 260 is removable the fixture 252 after assembling.

As shown in Figure 35, inner lock buckle 256 includes an elongated line of rabbet joint 404.The line of rabbet joint 404 includes a circular open 406, This circular open has a diameter of the width more than the line of rabbet joint 404.The line of rabbet joint 404 and circular open 406 can include multiple tool There is the depression of chamfering to help to be directed at fixture 252 with face shield assembly 102.Circular open 406 is conducive to being attached to fixture 252 Remove on face shield assembly 102 and from this face shield assembly, as discussed in further detail below.Two grooves 408 are parallel Extend in the both sides of the line of rabbet joint 404, thus on the either side of the line of rabbet joint 404, define that line of rabbet joint wall 410(is sometimes referred to as fixture thick stick Bar).The size of groove 408 is configured to for being attached on face shield assembly 102 by fixture 252 and moving from this face shield assembly Enough flexures of line of rabbet joint wall 410 are allowed during removing.Additionally, line of rabbet joint wall 410 is along the longest dimension of inner lock buckle 256 towards top Extending with bottom, this allows to use longer line of rabbet joint wall 410.Longer line of rabbet joint wall 410 reduces and fixture is being assembled to installation Stress level on time slot slotted wall on post.

Figure 36 illustrates the one being suitable for the face shield basis 114 that the fixture 252 with Figure 32 to Figure 35 is used together Configuration.Face shield basis 114 includes two depressions 140 being symmetrically positioned on the two opposite sides on face shield basis 114.Each recessed Falling in 140, mounting post 412 body from face shield basis 114 extends.Mounting post 412 can be and face shield basis 114 one Formula formed or be formed separately and be fixed on face shield basis 114.Mounting post 412 can have the configuration of mushroom-shaped, Just fixture 256 to be fixed in place for fixture 256 buckle on face shield basis 114 once user.Bulbiform mushroom-shaped The dome of post 412 contributes to location and the orientation of medium pore 406.When fixture 252 is forced on post 412, line of rabbet joint wall 410 deviates from Post 412 shift outward.Once the head of post 412 crosses the edge of line of rabbet joint wall 410, and line of rabbet joint wall 410 buckle returns to the original of them Position, thus the sense of touch feedback providing fixture 252 to be correctly attached on face shield assembly 102 is anti-with audition sometimes Feedback.

Mounting post 412 can also include size be configured to one that the elongated line of rabbet joint 404 with inner lock buckle 256 matches long Part 414(shape, oval, that exceed is otherwise referred to as a lug or fin (wing)).This portion elongated, that exceed An edge with chamfering is to help to make headgear 106 be properly aligned with relative to face shield assembly 102 to divide 414 to include.This part 414 are also prevented from fixture 252 rotates relative to face shield assembly 102.This contributes to guaranteeing at user headgear band in bed Constant tension on 260.

Figure 37 illustrates the another kind of again configuration on the face shield basis 114 for a fixture 252 is fixed to face shield assembly Partial component.Fixture 252 is positioned at a depression 140 on face shield basis 114.In depression 140, a columned round end Post 412 extends from the surface on face shield basis 114.When fixture 252 is attached on post 412, this post is due to its columned structure Type and allow the fine rotation of this fixture.But, as shown in Figure 38 and Figure 39, the line of rabbet joint 404, groove 408 and line of rabbet joint wall 410 edge The shorter in-plane of inner lock buckle 256 extends towards its front-end and back-end.

Inner lock buckle 256 also includes some pressure protrusions 414.As discussed above, these pressure protrusions are at enclosing cover 254 provide extra pressure on inner lock buckle 256, so make them be fixed to each other and go up.

Figure 40 to Figure 47 illustrates the multiple other configuration of fixture 252.The fixture 252 of Figure 40 include three elongated, The oval line of rabbet joint 404 and a finger tab 400.Finger tab 400 is used to produce a lever, for from a face Release clip 252 on shade assembly 102.The outer surface that the size of central authorities' line of rabbet joint 404 is sized for receiving from mask body prolongs The mounting post 412 stretched.Figure 43 illustrates such a suitable mounting post 412.Mounting post 412 includes a ridge 414 and two lines of rabbet joint 416.When fixture 252 is forced in mounting post 412, due to the interval provided by the line of rabbet joint 416, post 412 Outboard Sections bend toward each other.Once ridge 414 has crossed the upper surface of fixture 252, and it is former that mounting post 412 returns to it with regard to buckle Beginning position, and fixture 252 locks in place by ridge 414.

Figure 44 to Figure 47 illustrates a kind of similar configuration.The fixture 252 of Figure 45 do not include a finger tab and Its central opening 404 has the shape more round, more oval than these elongated lines of rabbet joint of Figure 40 to Figure 44.

All these previous configuration all simplify and face shield assembly 102 are fixed to the program on user head.Such as, fixture 252 allow to be opened to headgear 106 not to be a ring closed so that it.By opening, headgear 106 can be wrapped on head It not to force user to pull its head through this headgear.

With reference to Fig. 2, in addition to band 260, headgear assembly 106 also includes band 280 and a bundle top behind Band 282.Other headgear assembly can also be used.Band 280 is around the back side of the head of user U, generally at neck behind Back face but generally position below internal occipital protuberance extend.A position after this user ear, Band 280 is branched into a upper arm 284 and a underarm 286 behind.Upper arm 284 arc is bent-up to above user ear It is bent under individual position and then arc generally in a position in user ear front.Under underarm 286 arc curved To a generally position below the ear of user and extend to somewhat in ear front.

Band 260 can be connected on the band 280 of behind in any suitable way.In the configuration shown, band 260 are connected respectively on upper arm 284 and underarm 286.Preferably, upper arm 284 and underarm 286 are bigger than the rigidity of band 260, make Proper when wearing headgear assembly 106 arm 284, arm 286 generally maintain shape.In some configurations, upper arm 284 and underarm 286 Himself weight of each self-supporting.In some configurations, upper arm 284 and underarm 286 are each built into is wearing period nothing Tangle.Such as, arm 284, arm 286 have the probability of twisting when enough torsional rigidities are put on reduction.

Preferably, band 260 is connected at least in upper arm 284 and underarm 286 in a position in ear front On individual.This configuration contributes to user and positions these bands 260 in the case of not the biggest difficulty.Additionally, due to institute's exhibition Band 260 in the configuration shown is embedded in fixture 252, and the end of upper arm 284 and underarm 286 can include the line of rabbet joint 290, groove Seam 292, so makes band 260 can pass around the line of rabbet joint 290, the line of rabbet joint 292.Additionally, band 260 can include a regulation machine Structure 294, such as a kind of Velcro or bracelet (buckle) configuration.Governor motion 294 allows opposite shield closure 110 and user U Face between power be adjusted.Any suitable governor motion 294 can be used.

As shown in Figure 2, top band 282 the most flexible and there is adjustable length.Top band 282 passes through One line of rabbet joint 296 is connected on upper arm 284 and decreases the upper arm 284 head slide downward from user and contacts user The probability of ear.Preferably, top band 282 is connected to being located substantially at above the ear of user position On upper arm 284.

Advantageously, as shown in Figures 1 and 2, band 260 applies a power in the direction of the arrowf, and these bands lead to Crossing moving and being connected on face shield basis 114 on C direction, C direction is essentially perpendicular to the direction of power F.In other words, logical Cross and be pulled along and make band 360 tensioning, and fixture 252 is by the movement being perpendicular on this direction being pulled along It is connected on face shield basis 114.Such configuration is easy to be fixed on the face of user interface 100.

In another kind of configuration, headgear assembly 106 includes that a semirigid headgear 380(is as shown in Figure 29) for Face shield assembly 102 is fixed on the head of user.Semi-rigid headgear 380 is formed a composite construction, this composite junction Structure includes the semi-rigid band 382 being coupled on a soft edging 384.For example, it is possible to moulded by plastic overmold Or by using binding agent to be attached on semi-rigid band 382 by softness edging 384.As shown in Figure 29, can be by softness Edging 384 is docked on semi-rigid band 382, and soft edging 384 is not overlapping with semi-rigid band 382, in order to maintained half just The continuous profile of property headgear 380.When applying the head that face shield assembly 102 is pulled to user by tension force on band 260, half Rigidity band 382 limits and maintains the shape of this semi-rigid headgear.In other words, semi-rigid band 382 along its plane axis is Sufficiently rigid, in order to prevent its upper arm 284 and underarm 286 excessive deformation under tension.Semi-rigid band 382 can be by many Plant rigidity or semi-rigid material (including plastics or metal) is made.In some configurations, semi-rigid band 382 is made up of PVC.

For semi-rigid headgear assembly, it has been found that, shape keeps or the character of self-supporting can produce Intuitively there is the black box coordinated.Specifically, these connect and/or these headgear components be self-supporting and In the case of making them maintain three dimensional form, can come with correct orientation in the case of seldom (if any) instruction Assemble this headgear.In a self-supporting arranges, the tendency that these bands do not tangle also reduces spent by the whole assembly of assembling Time.

As used herein, term " semi-rigid " is used for representing, this headgear assembly is sufficiently rigid and make headgear group Part 380 can present a kind of 3D shape with the size being designed to the patients head coordinated close to this headgear, with Time or sufficiently flexible and conform generally to the anatomy of this patient.Such as, miscellaneous part (such as, the arm of headgear assembly 380 Or band) in some can also be partially or completely " semirigid ", so make these parts can keep being about from A kind of three dimensional form supported." semirigid " headgear assembly is not intended as meaning each and all parts of this headgear assembly The most semirigid.Such as, the substantially three dimensional form that the headgear assembly 380 of self-supporting may present may relate generally to headgear The rear portion of assembly 380 and top.Additionally, when on the head being placed on patient, semirigid headgear assembly 380 can include The multiple semi-rigid region extended above in ear front and ear.

Left side and the upper arm 284 on right side, underarm 286 are equally formed by a kind of semi-rigid material.When used herein, Semi-rigid material can include plastics or the sheeting of multiple molding, these materials include but not limited to homogeneous plastic material and The non-woven fiber material of bonding.

In some configurations, one or more in these arms or band are by one the most inelastic material shape Become.These arms or band can be formed by a kind of semirigid self-supporting material, so make the semirigid headgear assembly 380 can To present substantially three-dimensional shape and not tangle.In some configurations, such as but do not limit, this material That can include having compliance and semirigid part a kind of layer structure.Such as but do not limit, semi-rigid band 382 can be by material a kind of self-supporting, springy, the most inelastic, such as santoprene (Santoprene), polyene Hydrocarbon, polypropylene, polyethylene, expanded polyolefin, nylon or non-woven polymer material are made.In some configurations, semi-rigid band 382 is to be formed by polyethylene or polypropylene series.This material can be a kind of Low Density Polyethylene, and such as Dowlex2517, it is A kind of linear low density polyethylene, have the yield tensile strength of 9.65MPa, the fracture tensile strength of 8.96MPa and The 2% secant flexural modulus of 234MPa.Semi-rigid band 382 is preferably formed by following a kind of material, and this material makes semi-rigid head No matter its orientation the most substantially maintains shape to set 380.In some configurations, semi-rigid band 382 is 30N's No more than about 6mm is stretched under tensile load.In some configurations, semi-rigid band 382 stretches under the tensile load of 30N and does not surpass Cross about 3mm.

In some configurations, semi-rigid band 382 is by bond with a kind of polyolefin (such as, cladding molding or lamination) Non-woven polyolefin (NWP) is formed.In such configuration, the polyolefine material of this cladding molding provides main shape dimension Hold characteristic.Additionally, softer NWP material is adapted for contacting the comfort level desired by skin offer.Additionally, NWP Material can assist the load carrying characteristic desired by offer, tensile load bearer properties as desired.

Semi-rigid headgear 380 is usually and is formed by a kind of semi-rigid material.When used herein, semi-rigid material can wrap Including plastics or the sheeting of multiple molding, these materials include but not limited to the non-woven fibre material of homogeneous plastic material and bonding Material.Upper arm 284 and underarm 286 also include this kind of semi-rigid material, because arm 284, arm 286 are and semi-rigid headgear 380 one Some that is that formula is formed and that be this semi-rigid headgear.Preferably, right side and left side underarm 286 are formed in use The back side that will be around the head of patient the unitary members extended above at cervical region.

One soft edging 384 cover or be attached to semi-rigid band 382 periphery at least some of on.At a structure In type, soft edging 384 does not cover the above or below of semi-rigid band 382.Such as, soft edging 384 and semi-rigid band 382 thickness in its position being bound up can be identical.

Soft edging 384 provides a soft comfortable between periphery and the skin of user of semi-rigid band 382 Interface.Soft edging 384 can be made up of multiple flexible material, includes but not limited to plastics, elastomer, silicone or thermoplasticity Polyurethane (TPU) plastics.Soft edging 384 can have the Shore stiffness in the range of 10 Shore A to 80 Shore A.

As used about headgear and band at this, " soft " is used to describe the feel of material, it is intended that pass through sense of touch The quality of this material that the reaction obtained is assessed.Additionally, as used about headgear and band at this, " comfortable " is used to Describe material and go to meet the ability of the anatomical features (such as, around a facial characteristics) of patient.Specifically, including by The band of at least one element that " soft " and/or " comfortable " material is made can also be " semi-rigid " and/or the most nonelastic 's.

Soft edging 384 can have uniform thickness or have uneven thickness in some configurations.Such as, In some configurations, soft edging 384 is identical with the thickness of semi-rigid band 382.In other configurations, soft edging 384 compares Semi-rigid band 382 is thin, form a bulbous end portion of semi-rigid band 382 or thicker than semi-rigid band 382. Figure 29 shows multiple cross sectional view of semi-rigid headgear 380.Each cross sectional view (A-A' to F-F') shows semi-rigid These configurations can be combined by band 382 and the possible configuration of one of soft edging 384 thickness as desired.Such as, Any one specific soft edging 384 thickness and shape can be applied to semi-rigid band 382 a part or on the whole, Or can be combined with any other the specific cladding thickness shown in Figure 29 and shape.

Other thickness configurations many can also be provided.Furthermore, it is possible to semi-rigid band 382 symmetrically or asymmetric Ground application material thickness.Such as, cross sectional view C-C' and F-F' are shown as asymmetric；But, in other configurations, soft The thickness of the either end of edging 384 is applied on semi-rigid band 382 symmetrically.In some configurations, semi-rigid band 382 are optionally thickened to provide extra rigidity and supporting role.Such as, the two of cross sectional view F-F' it is shown as Second in configuration has such thickening.Finally, in some configurations, at whole semi-rigid headgear 380(as semi-rigid On band 382, as shown in Figure 29, or on soft edging 384) on provide multiple ventilation through hole 396 with provide ventilation and Perspiration manages.

As shown in Figure 29, when tiling, semi-rigid headgear 380 define the arc area 386 of three C-shapeds, 388, 390.Two regions 386,388 around ear are to be limited by upper arm 284 and underarm 286, and Background Region 390 be by Multiple underarms 286 and this behind band part 280 are limited.Semi-rigid headgear 380 be sufficiently flexible and can bend to adapt to The shape of user head, so makes the region 386,388 around ear at least partly surround or around this user Ear, and Background Region 390 at least partly surrounds or the head back side more than this user cervical region.

The curvature of each arm 280,284,286 can be selected to provide comfortable fit and to promote semi-rigid headgear 380 apply on the user's head or to remove from the head of user.Such as, in the configuration shown, relative to upper Opening in the arc area 386,388 around ear in portion, these upper arm 284 have a concave curvature and underarm 286 has There is a convex curvature.Band part 280 and these underarms 286 are relative to around the opening in the arc area 390 of cervical region behind For all there is concave curvature.These curvature provide multiple openings to be conducive to by half just by (such as) to these arc areas Property headgear 380 apply to remove to the head of user and from the head of user, sizes of these beginnings and orientation are through really Fixed easily to coordinate on the cervical region and ear of user.

The configuration of Figure 29 have employed and includes that the first bizet arm 392 and the second bizet arm 394 are for by semi-rigid headgear 380 The integral type bizet band being fixed on the head of user.The most semi-rigid headgear 380 is oriented to make partially around this The head of user, the first bizet arm 392 and the second bizet arm 394 just contact with each other and are secured in place by semi-rigid headgear 380.Can The most attached to provide any one of various mechanism to enable them to the first bizet arm 392 and the second bizet arm 394 Connect.Such as, in some configurations, it is possible to use hook-and-loop fabric (such as, Velcro) or one or more buckle or fixture by First bizet arm 392 and the second bizet arm 394 are attached to each other.

These bizet bands extend laterally collinearly with ear on skull top.When these bizet bands prolong by this way Stretch and during ear that arc area 386,388 is oriented to partially around user, the behind band of semi-rigid headgear 380 280 should be positioned in occipital protuberance or below.The occipital protuberance of user is the most prominent of the rear lower office occipital bone of skull Go out portion.In other words, occipital protuberance is the peak of external occipital protuberance.Can be according in the multiple configuration described in appended annex Semi-rigid headgear 380 is positioned on the user's head by any one, this annex formed present disclosure integral part and It is fully incorporated in this.

Such as, band part 280 is adapted to the rear portion of the head with user and engages behind.Preferably, restraint behind The position that band portion 280 is adapted on external occipital protuberance or below engages with head.Band part 280 behind Stride across the distance of the back periphery of head and extended to every side of head.In some configurations, band part 280 is wrapped behind Including a longitudinal center, it is adapted to be positioned at below a horizontal plane of the auditory meatus extending through patient at about 25 degree.

On the either side of head, semi-rigid headgear 380 extends into left field and right side area up and down, should Left field and right side area define arc area 386,388.The two side region is adapted to the ear rear patient Extend.Preferably, the two side region is further adapted to extend at the mastoid process rear of patient.The left side district of semi-rigid headgear 380 Territory and right side area each extend in an arcuate part 386,388 or include this arcuate part.Arcuate part 386,388 Bend forward.Arcuate part 386,388 is adapted to around the corresponding ear of this patient extend.Preferably, arcuate part 386,388 office, corresponding end portion is each terminated in.These dwell sections are preferably adapted to be positioned at the ear front of patient. In some configurations, these side region and the arcuate part 386,388 of semi-rigid headgear 380 do not include a soft inner mast Fill part, but the elasticity material of a kind of self-supporting that the head/hair with patient directly contacts can be included.

Arcuate part 386,388 is linked together by the top section of semi-rigid headgear 380.In some configurations, this top Portion's part can be positioned at ear front.Preferably, this top section is oriented to hold up generally from ear.More preferably Ground, the longitudinal center of this top section be adapted to from the perpendicular intersected with auditory meatus spaced rearward more than 13mm, excellent Select between 13mm and 100mm.In some configurations, this top section includes a first segment 392 and second sections 394, wherein first segment 392 and the combination of the second sections 394 form this top section.First segment 392 is from left side arcuate part One summit of 386 upwardly extends, and the second sections 394 upwardly extends from a summit of right side arcuate part 388.Preferably Ground, this top section is to be formed by a kind of self-supporting and semirigid material.In some configurations, this top section does not include appointing What backing (includes the padded backing layer of softness).

A line of rabbet joint 292,290 is included near upper arm 284 and each leisure of underarm 286 each arm end.Each line of rabbet joint is joined It is set to for receiving the band 260 from face shield assembly 102, as shown in Figure 2.Additionally, semi-rigid headgear 380 by band 260 parts 398 covered are thinner than corresponding arm 284, arm 286, in order to contain the thickness of band 260.Such as, such as Figure 30 and Figure 31 Shown in, semi-rigid headgear part 398 is thinner than arm 286.Being sized to so that when band 260 is inserted into of part 398 In the line of rabbet joint 290 and when straining, its thickness will be without departing from arm 286.By keeping the thickness of band 260 and part 398 less than arm The thickness of 286, when wearing, band 260 will not stimulate user.

Additionally, the position that upper arm 284 is configured to above user ear downwardly extends, so make wearing Time adjustable top band 260 extend at the eyes not less than about 10mm away from user.Underarm 286 is configured to work as head Depart from from the cervical region of user when tilting up and down, and the terminating point of underarm 286 is generally positioned at the ear of this user Piece lower section, so makes the bottom band being attached on underarm 286 angularly rise to face shield assembly 120 from terminating point 290. In this configuration, as shown in Figure 52 and Figure 53, these bottom bands and these upper bundle bands define a triangle, and And the space between these bottom bands and these top bands on this face shield less than these bottom bands on this headgear with Space between these top bands, thus stabilize face shield assembly 120 in case it moves up and down.

Referring again to Figure 17, elbow 222 is connected on a conduit 300 by a rotary components that can disconnect 302.As Shown in the cross sectional view of Figure 20, elbow 222 includes a mast 304, and this mast includes an inwall 306 at base portion.In Wall 306 includes a depression 308.

One sleeve 310 includes the flange 312 being received in depression 308.Any suitable technology can be used By sleeve 310 in elbow 222 in position.Sleeve 310 includes the outer wall 314 of a generic cylindrical.Flange 312 includes One section stretched out and be connected on a lever 316.Preferably, flange 312 and lever 316 are integral type shapes Become.With reference to Figure 21, lever 316 includes a lower latch extended internally 320 and can be connected to around by lever 316 This section of flange 312 is pivoted.Therefore, a top 322 of lever 316 presses inward against can cause snap close 320 Deviate from the outer wall 314 of the generic cylindrical of this sleeve 310 and move.

One (swivel) 330 that turns includes the inwall 332 of a generic cylindrical.Inwall 332 is outside sleeve 310 Slide on wall 314, and make to be slidably matched in formation one between 330 and sleeve 310 of turning.One top 334 includes one Shoulder 336.The snap close 320 of lever 316 330 can be fixed on turning on sleeve 310 by carrying out engaging with shoulder 336 In axial location.When the top 322 of lever 316 is pressed, snap close 320 moves away shoulder 336, this allow to turn 330 from Remove on sleeve 310.

One flap 350 may be mounted between mast 304 and sleeve 310.In the configuration shown, flap 350 from It is sandwiched between mast 304 and sleeve 310 base portion 354 to extend in a flow channel 352.Flap 350 can enclose It is pivoted up (as shown in Figure 20, see arrow P) around X-axis line (seeing Figure 21) and leaves sleeve 310, so make from one The stream of positive pressure generator can continue by interface 100 the most unhinderedly to arrive user.Flap 350 pivot downwards and Contact with sleeve 310, in order in the case of this positive pressure source stops providing forced air stream, seal this flow channel 352.? In some configurations, flap 350 is by contact sleeve 310 by halves.In some configurations, when being in lowered position (down Position) time, this passage 352 of flap 350 blow-by.

With reference to Figure 21, define a port 360 through the elbow 222 position above flap 350.Port 360 preferably along near axis X one the part location of being positioned at of elbow 222.In some configurations, port 360 is determined Position becomes substantially to be shielded by flap 350 and isolate the air stream of suction.In other words, flap 350 is made to pivot away from set when air During cylinder 310, flap 350 is moved at least partially or fully cover a position of port 360.

In some configurations, that port 360 extends through elbow 222, the one of inwall 362 that include a flat Individual wall.When this flap moves upwardly off the flange 312 of sleeve 310, the inwall 362 of this flat contributes to flap 350 seal this port 360 generally.

In some configurations, lever 316 overlay on make in the major part of port 360 observe time port 360 generally by Hide.But, as shown in Figure 20, a gap 364 makes to work as flap preferably about at least some of of lever 316 350 when not overlaying on port 360, and air stream can pass this port 360 the most freely.Additionally, in some configurations, port On 360 sides identical with the opening 370 being limited in pommel 220 being positioned in elbow 222 with lever 316, when When being assembled on face shield assembly 102 by connectivity port assembly 104, this opening is positioned in face shield assembly 102.Advantageously, this Kind of location make that port 360 is on elbow 222 one is towards in the position of user.In use, such a Position has covered port 360 further makes it be not seen, and this generates the configuration of the most more pleasant.Additionally, by In being the most rare through the flowing of port 360, therefore port 360 being arranged towards user will not be to this user Cause any obvious discomfort.

Although it is not shown, but elbow 222 can also include one or more bias current passage.Preferably these bias currents are led to Pore is positioned in orientation forward, so that this user is the most directly impacted in any bias current.

Figure 48 to Figure 51 illustrates the another kind of configuration of elbow assembly 302.As show in Figure 49, elbow assembly 302 include 222, sleeve 310 of an elbow and/or one turn 330.In some configurations, elbow assembly 302 bag Include elbow 222 and sleeve, and eliminate and turn 330.This is turned and can be permanently or removably attached to sleeve 310 and curved On 222；In some configurations, turning 330 is integrally-formed with the end of delivery conduit.One flap 350 is positioned Sleeve 310 make this flap block the flow channel 352 of this sleeve at least in part.Elbow assembly 302 is with Figure 17 extremely The effect of the elbow assembly 302 of Figure 21 is similar to；But, the elbow assembly 302 of Figure 48 to Figure 51 provides extra benefit, i.e. When flap 350 drops to its closed position, guiding gas leaves this patient (as shown in Figure 50 and Figure 51).

With reference to Figure 49, sleeve 310 preferably includes two or more incision tract or depression 356.These cave in 356 permissible There is any suitable shape, and in the configuration shown, these depressions 356 include extending up in sleeve 310 A kind of semi-circular configuration.Sleeve 310 also includes at least one protrusion 357 and preferably two or more protrusions 357.Preferably, each protuberance 357 around about 70 degree arc extend.It is highly preferred that each protuberance 357 is generally positioned at two In the middle of depression 356 and each protuberance 357 extends about 70 degree around an outer surface of sleeve 310.

Turn 330 configuration be preferably generic cylindrical.As shown in Figure 49, turn and 330 there is one inwardly The ridge 358 extended.Ridge 358 is preferably around whole inner surface.In some configurations, ridge 358 can be interrupted.But preferably Ground, ridge 358 does not have the interruption being sufficiently large to receive whole protrusion 357, so makes ridge 358 can assist with protuberance 357 Helping keeps turning 330 is installed on sleeve 310.When will turn 330 be assembled on sleeve 310 time, depression 356 permission protuberance Portion 357 be biased inwardly then make protrusion 357 can slip over ridge 358 and then outwards buckle go back and by solid for protrusion 357 It is scheduled under ridge 358.

Elbow 222 includes that at its side multiple opening 420, these openings and an air vent passage 422 are in stream Body connects.As shown in Figure 50 and Figure 51, air vent passage 422 be between the inwall 362 by this elbow and outer wall 424 between Every formed.

As shown in Figure 50 and Figure 51, when flap 350 drops to its closed position, the air of user exhalation enters curved In the opening 370 of 222.Expiration flows through the port 360 in the inwall 362 of elbow and through venting channels 422 until it Elbow 222 is left via opening 420.

The configuration of Figure 48 to Figure 51 is provided a total length reduced and is positioned at the front portion of elbow 222 by elimination Place a ugly hole and improve product aesthetic feeling.Additionally, the configuration of Figure 48 to Figure 51 is by preventing air to be drawn towards use Person and improve patient comfort.On the contrary, air is drawn from these sides with elbow 222 and is left by multiple openings 420 Patient.

With reference to Figure 54, such as but do not limit, it is possible to use a flexible head grip assembly 500 is solid by a face shield assembly The fixed head to a user is for respiratory therapy.The flexible head grip assembly 500 shown can be with any suitable face Shade assembly is used together, and includes but not limited to any one in these face shield configurations disclosed at this.

The flexible head grip assembly 500 shown includes a band part 502 behind.Band part 502 is at least behind A part connects with an abaculus 504.In the configuration shown, band part 502 is configured for making around this behind The back side of the head of user is crossed over a segment distance and is configured for every side of head towards this user and extends.

With continued reference to Figure 54, a pair upper arm 506 and a pair intermediate arm 510 can tops of band part 502 from behind Edge 512 horizontal expansion generally.A pair underarm 514 can a lower limb 516 of band part 502 from behind the most horizontal To extension.In some configurations, this is downward to underarm 514 and deviates from this behind band part 502 and extends so that underarm One lower limb of 514 will be positioned lower than the feather edge of band part 502 behind.In some configurations, this to intermediate arm to Upper and deviate from this behind band part 502 and extend so that intermediate arm 510 has and is positioned higher than this behind band part A top edge of top edge.

In the configuration shown, underarm 514 and intermediate arm 510 terminate at end 520.End 520 can include fixing Part 522, hook or coil component that these standing parts can be arranged by the fastening for hook-and-loop pattern are formed.Preferably, and As being described in further detail below, these standing parts 522 at least include can be with another portion of headgear assembly 500 The hook portion that the material divided engages.Each upper arm 506 can also terminate at the region including a standing part 524.

When on the head being positioned at a user, behind band part 502 be positioned at pillow outer knuckle on or thereunder And it is positioned at above the nape of this user.In any suitable way these top bands 506 can be linked together.? In some configurations, fixture by these top bands 506 with on the another part being folded in half and being fixed to top band 506 This standing part 522 is fixed together.Therefore, top band 506 can extend across the top of the head of user generally, with Moving down of the remainder of restriction headgear assembly 500.

Intermediate arm 510 and underarm 514 may be connected on a fixture (not shown) or another portion of this face shield assembly On Fen so that intermediate arm 510 and underarm 514 by headgear assembly 500 the most also or indirectly (such as, with a fixture, such as But that being not limited in Figure 40 to be shown) it is fixed on this face shield.The end 520 of intermediate arm 510 and underarm 514 can pass Ring on this face shield assembly or other structures also carry out doubling with a folding line.Weight can be fixed in any suitable way Folded part.Such as but do not limit, (such as, Velcro can be arranged with a hook-and-loop formula fasteningSecuring member) consolidate These laps fixed.

With reference to Figure 55, at least one in the end of upper arm 506, intermediate arm 510 and underarm 514 can include expansion End 520.Preferably, the end 520 of expansion is at least formed on the intermediate arm 510 of flexible headgear 500 and underarm 514.One In a little configurations, the end 520 of expansion can occur on the one or more arms being connected on face shield assembly.The end expanded 520 can be integrally-formed with the major part of arm 510, arm 514.

As it has been described above, arm 526 can be integrally-formed with the end 520 expanded.The end 520 of the expansion shown has One width d, and arm 526 has a width e.The width e of arm 526 can be between about 12mm and about 20mm, at about 14mm And between about 18mm or preferably from about 16mm.The width d of the end 520 expanded can be between about 18mm and about 26mm, about Between 20mm and about 24mm or preferably from about 22mm.In certain embodiments, the Breadth Maximum d of the end 520 of expansion and arm width Difference between degree e is between about 3mm and about 10mm or between about 5mm and about 8mm.In some configurations, the end of expansion Difference between Breadth Maximum d and the arm width e of 520 is about 6mm.The width d of the end 520 owing to expanding is more than the width of arm 526 Degree e, the edge of the end 520 therefore expanded can be easily positioned by the user into and make for being fixed on this arm end 520 This part can be easily positioned by the user, in order to recompounding this arm 526(is such as, in order to tightens up, unclamp, remove or with other Mode reorientates this flexibility headgear 500).

Additionally, when the width d of the end 520 expanded is more than the width e of arm 526, at the end 520 and the arm 526 that expand Between a position can form a cervical region 536.When on the head being fixed to this user, cervical region 536 is permissible Reduce the probability skidded off in the attachment part from this face shield assembly of the end 520 of this expansion.Such as, on this face shield assembly An opening in attachment part can be about 16mm to about 18mm width, and the end 520 expanded can be about 22mm and arm 526 can be about 16mm.Therefore, the probability that the end 520 of expansion pulls through this opening unintentionally is greatly reduced.

The geometry of cervical region 536 can reduce the end 520 of this expansion further and pass unintentionally what this opening pulled Probability.Any suitable changeover portion can be used.As Figure 56 shows, when desired, cervical region 536 can be bending with promote Enter this arm to remove from this face shield assembly.This cervical region can extend with the angle between about 0 degree and about 90 degree relative to this arm.Excellent Selection of land, cervical region 536 extends with the angle between about 20 degree and about 60 degree.In some configurations, cervical region 536 can be one more anxious Acute changeover portion or a changeover portion the most drastically.This changeover portion more the most drastically, this arm the most impossible unintentionally with this set of mask Part separates.

Cervical region 536 defines a part for the geometry of the end 520 of this expansion.In some configurations, the end of expansion Portion 520 can be substantially oval-shaped.In some configurations, the end 520 of expansion may be configured to be similar to variously-shaped, bag Include such as parallelogram, ellipse, circle, triangle or any other suitable shape.

With continued reference to Figure 55, the end 520 of each expansion can include having the embedding of an embedding of fastener or the like Block 522.Abaculus 522 can be positioned on the end 520 of expansion so that when arm is folded in half to itself, the end of expansion Portion 520 can be fixed on another part of corresponding arm.The abaculus 522 embedded can include a kind of fabric hook (hook- Fabric) (such as,).Therefore, the end 520 of expansion and the hook material of specifically abaculus 522 can be by tightly It is affixed on another part of respective arms, so that headgear assembly 500 is fixed on face shield assembly.

Abaculus 522 can be attached on the end of these arms in any suitable way.In some configurations, abaculus 522 is to be attached on the end 520 of expansion by ultra-sonic welded.Such as, abaculus 522 can be positioned in along arm In desired position, and then Ultrasonic welding processes can effectively by both melt material together.With reference to Figure 56, When using ultrasonic bond to fetch on the end 520 that the fabric hook abaculus 522 that will be enlarged by is attached to expand, around the fabric hook expanded The periphery of abaculus 522 defines a welding edge 530 with width α.Due to the ultra-sonic welded work in the configuration shown Sequence, the width α of welding edge 530 is about 3mm.Due to this ultra-sonic welded operation make this fabric hook hook fusing or otherwise Deformation, the work that the region including welding edge 530 of this fabric hook abaculus 522 usually not engages with the material receiving hook With.Therefore, the functional surface of fabric hook abaculus 522 amasss and has been reduced a surface area equal to this welding edge surface area.

Welding edge 530 can be defined by a soft edge 532, and this soft edge includes this of the end 520 of expansion Receive the breathable composite of hooks a bit and there is width b.Preferably, the surface of the recessed soft edge of welding edge 530 532 with Under.The projection of the width e of arm 526 can extend through welding edge 530 and soft edge 532 will be oriented to from arm The projected segment of the width e of 526 is slightly outwards.

The width b of this soft edge can be from about 0.5mm to about 4mm, from about 1mm to about 3mm or preferably from about 2mm. One effective hook portion 534 can adjoin this welding edge 530 and have a width c.Effectively the width c of hook portion can be slightly Micro-width e being narrower than arm 526.By increasing width c, the functional surface that can increase fabric hook material amasss, and therefore improves Shearing force resistance and durability.By making the width c width e less than arm 526, arm 526 reduces the contact of effective hook portion 534 should The probability of the skin of user.The effectively width c of fabric hook portion 534 can be from about 8mm to 16mm, from about 10mm to about 14mm, preferably from about 12mm.The width d of the end expanded makes it possible to increase the width c that functional surface is long-pending.In other words, The end of arm is the most extended and allows to increase the width of this effective hook portion 534, this can provide the end of this expansion with The most firm attachment on the surface of this arm.

Flexible head grip assembly 500 can be formed by any suitable material.In some configurations, flexible head grip assembly 500 Can at least be coated with a kind of breathable composite receiving fastener or it is formed by this material at least partially.At some In configuration, flexible head grip assembly 500 can be at least partly by nylon/LycraMaterial is formed.? In some embodiments, when a 150mm length × material sample wide for 20mm stands the axial load of 10N, this sample elongates The axial load of about 207mm, i.e. 10N causes the percentage elongation of about 38%.Therefore, this material is preferably the most resilient.At some In embodiment, headgear assembly 500 can include the edge of one or more sphering.Can be formed this in any suitable way The edge of a little spherings.In some configurations, the edge of these spherings is by applying heat and pressure to the edge of headgear assembly 500 And formed.In some configurations, the edge of these spherings is to be similar to U.S. Patent No. 3, described in 295, No. 529 The mode of technology is formed, and this patent is combined in this by quoting with entire contents.

As described above, the behind band part 502 of the flexible head grip assembly 500 shown preferably includes at least one Individual the most inelastic abaculus 504.This abaculus can be formed, such as but not limited to polyester by the material of a kind of relatively low stretchingMaterial.In certain embodiments, stand when a 150mm length × material sample wide for 20mm During the axial load of 10N, this sample elongates the axial load of about 160mm, i.e. 10N and causes the percentage elongation of about 7%.Therefore, with this The more flexible material of flexible portion is compared, and this material is preferably the most nonelastic or inextensible.

Owing to abaculus 504 is to be formed by a kind of material lower than peripheral part of headgear assembly 500 elasticity, therefore abaculus 504 opposing headgear assemblies 500 at least some of in stretching.By resisting at least some of of this resilient headgear assembly Elongation, this abaculus contribute to making headgear 500 maintain desired shape and contributing to headgear 500 is maintained relative to A desired position for the back side of user head.

Test is not it has been shown that in the case of using abaculus 504, when these bottom bands are applied cumulative load Time, the elongation in the back of headgear assembly 500 may cause the elongation of this headgear assembly the cervical region downwardly toward user to move.Figure 57A and Figure 57 B show applies the impact of cumulative power to the underarm 514 of flexible headgear 540, this flexible head set have completely by The behind band part 544 that a kind of elastomeric material is constituted.The configuration shown in Figure 57 A and 57B does not have the spy of abaculus 504 Levy.

As it has been described above, when behind band part 544 is positioned in the outer knuckle of pillow or thereunder and at this user Time above nape, this behind band part is positioned in a desired position.In Figure 57 A, it is shown that be in one Behind band part 544 in preferred position.In order to assist mobile visualization, test model 542 show many Individual position mark 546.As shown in Figure 57 B, when cumulative load is applied on underarm 514, band part 544 behind Elastic property allows its elongation and deformation, and this allows behind band part 544 to move down along the cervical region of this user.Reference These position marks 546 illustrate this movement.Along with downward movement, the bigger power from posterior cord band portion 544 is executed Being added in cervical region rather than head, this is less desirable.Owing to, when for respiratory therapy, flexible headgear 540 may wear number Minute to time of a few hours or the time of a few hours to a couple of days, so the location of the reduction of band part 544 behind may be right This user causes discomfort.

In order to reduce the elongation degree of the band part 502 behind when cumulative power is applied in underarm 514, can be by bullet The abaculus 504 that property is less is attached on posterior cord band portion 502.In some configurations, abaculus 504 can include one the most not Extensile insert 560.Insert 560 can be attached in the band part 502 of behind, is e.g. sewed up by lock seaming formula (over-lock stitching), by ultra-sonic welded, by using glue or other binding agents or by the skill of this area Any other method that art personnel are known.When insert 560 is attached in the band part 502 of behind, it can provide Bigger anti-tensile, this applies bigger power to underarm 514 when allowing in attachment and use flexible headgear 500.Therefore, insert 560 deformation that can advantageously reduce band part 502 behind and assist to divide this behind belt portions to be maintained at relative to making A desired position for the head of user and cervical region.

As shown in Figure 58 A to Figure 58 D, inextensible insert 560,562,564,566 may be configured to multiple Shape, includes but not limited to those shown in Figure 58 A to Figure 58 D.Preferably, inextensible insert 560,562,564, 566 adjacent or covering at least these behind band parts 502.In some configurations, inextensible insert 562,564 adjacent or Cover at least some of of these underarms 514.In some configurations, inextensible insert 562,564 is adjacent or covers this Bonding pad between underarms 514 and behind band part 502 is at least some of a bit.In some configurations, inextensible inserts Enter part 564 adjoin or cover at least some of of these intermediate arms 510.In some configurations, inextensible insert 564 is adjacent Meet or cover at least some of of these intermediate arms 510 and behind bonding pad between band part 502.In some configurations, The height of inextensible insert 560 is at least about half of the height h of band part 502 behind.In some configurations, no Extensile insert 560 highly preferred be the height h of band part 502 behind about half more than.Restraint behind by making A part for band portion 502 is formed by more flexible material, and band part 502 can be limited but exceeded complete behind Carry out stretching and deforming in the degree that the full behind band part formed by the material that elasticity is less is likely to be of.

Inextensible insert 560 is configured with any suitable surface area.Inextensible insert 560 different lengths that may be configured to the lower limb 516 along behind band part 502 extend.In some configurations, can not The insert 560 stretched is along more than half extension of the lower limb 516 of behind band part 502.Preferably, inextensible Insert 560 extends along the most whole lower limb 516 of behind band part 502.Other configurations are possible.

Referring now to Figure 59, illustrating the assembly including headgear 600, this headgear has can be with a wing formula bracelet 602 two or more bands connected.As other headgears described herein, headgear 600 can with any suitably Face shield assembly is used together, and includes but not limited to any one in these face shield configurations disclosed at this.Additionally, shown Configuration include multiple bands of being connected by a wing formula bracelet 602, and this configuration may be used for (such as but not limited to) Any headgear described herein.

In the configuration that Figure 59 is shown, headgear assembly 600 includes at least one pair of upper arm 606.Each upper arm 606 can be whole Terminate in end 608.In some configurations, this includes a standing part at least one in upper arm 606, as elsewhere Any one described standing part.In the configuration shown, each upper arm 606 includes a standing part.Preferably, this A little standing parts are positioned at least partially on end 608.In some configurations, these standing parts can by for hook- Hook or coil component that the fastening of circle pattern arranges are formed.Preferably, at least include can be with headgear assembly 600 for these standing parts The hook portion that engages of the material of another part.

With reference to Figure 59, such as but do not limit, these upper arm 606 can be connect by wing formula bracelet 602.Such as Figure 61 Shown in, wing formula bracelet 602 can include a body 610, and this body defines at least one line of rabbet joint 612, preferably at least Two lines of rabbet joint 612.This at least one line of rabbet joint 612 accommodates the end 608 of these bands 606 so that the end of these bands 606 608 can pass this at least one line of rabbet joint 612 and then turn down and in position with standing part as described above.

The body 610 of the bracelet 602 shown includes day shaped sliding connector part 614 and a pair fin 616. Therefore, this at least one line of rabbet joint 612 can be limited by day shaped sliding connector part 614.But, in some configurations, This at least one line of rabbet joint 612 can be by one or more (include a plurality of with one or more in lower component) in following Formed: circle, Q-RING, D-ring, oval loop, the bracelet of an on-slip, a ladder lock or similar Thing.

Band 606 is advantageously provided and supports by fin 616, so makes (as shown in Figure 59) including band 606 Headgear assembly 600 can substantially maintain 3D shape.In some configurations, not there is the bracelet of fin by this headgear group of permission Part and more specifically band 606 fold around this bracelet and fall, and this may cause this headgear assembly not maintain 3D shape.It has been found, therefore, that fin 616 enhances the availability of headgear assembly 600.

With reference to Figure 62, the extension 618 laterally outwardly of 616, the wing extends downward beyond the one of this connector part 614 Individual lower surface 620.By making lateral extension portion 618 extend to lower surface less than 620, the bracelet smooth relative to, bracelet 602 heads that can conform better to and/or follow user crown.But, in some configurations, extension laterally outwardly Portion 618 can not extend downwardly to lower surface less than 620, and/or the bottom (including these fins) of this bracelet can be substantially Smooth or sphering.

Bracelet 602 can be formed by any suitable material.In some configurations, bracelet 602 can comprise two kinds or more Multiple different material, so makes connector part 614 can be formed by the material that a kind of rigidity is bigger, and at least these wings Sheet 616 can be formed by a kind of softer material.Softer fin 616 can improve comfort level, and the adapter that rigidity is bigger 614 make this bracelet 602 can be carried in headgear assembly 602 expect will experience load.

In some configurations, these two or more different materials can be overmolded or common molded and form bracelet 602.In some configurations, these two or more different materials can be mechanically connected (such as, be clasped, keyed jointing Etc.) maybe can be connect by attachment, bonding etc..In some configurations, such as but do not limit, at least these fins 616 can be formed by a kind of thermoplastic elastomer (TPE) or a kind of impact-resistant modified polyethylene.In some configurations, such as but do not carry out Limiting, connector part 614 can be formed by nylon etc..In some configurations, this connector part and these fins are permissible Formed by the multiple material with same matrix material and (such as, there is suitable chemical relationship to allow these materials to connect Material).

Referring now still to Figure 62, these fins 616 preferably on thickness near the region of connector part 614 towards these Lateral extension portion 616 is tapered generally.Although any suitable tapered profile can be used, but the reduction of thickness Promote the flexure of fin 616 and the anatomy of user can be conformed better to.In other words, fin 616 is being somebody's turn to do from adjacent The thickness of the reduction of this part of connector part 614 position laterally outwardly creates more weak flexural strength, and this has Help meet the anatomy of user.

Referring again to Figure 61, fin 616 has multiple sidewalls 622 of taper inward.In the configuration shown, to Interior tapered sidewall 622 is attached to be had on the end wall 624 of rounded corners 626.Rounded corners 626 improves user and relaxes Appropriateness, and tapered sidewall 622 reduces the width of fin 616.At least width of the reduction of the end of fin 616 promotes Being caught in the fold domain of band 606, below end 608 by fin 616, this is opened up in Figure 59 and Figure 60 best Illustrate.In some configurations, the end 608 of folding and/or the adjacent part of band 606 define a depression, and this depression connects Receive the tapered end of these fins 616.In some configurations, band 606 can be in a district as discussed above Territory is widened.In the configuration shown, the connector part 614 of bracelet 602 is wider than at least some of of band 606, so Make band 606 can extend across the opening 612 defined in connector part 614, and fin 616 be tapered so that Band 606 can overlay on fin 616 and/or encase it.

In some configurations, fin 616 is extended 604 1 length L2 of this connector part, and this length is more than limiting The twice of the thickness L1 of this wall of the connector part 604 of the line of rabbet joint 612.Other configurations are also possible.As begged for above Opinion, the development length L2 of fin 616 reduces the upset of band 606 when being connected with wing formula bracelet 602.Fin 616 is permissible There is length L2 of the length of connector part less than these ends 608, so make the lateral extension portion of fin 616 618 can be encased by the connector part of these ends 608.

Although with regard to certain embodiment, invention has been described, but those of ordinary skill in the art institute is clearly Other embodiments are also within the scope of the invention.Therefore, without departing from the spirit and scope of the present invention, can do Go out variations and modifications.For example, it is possible to reorientate all parts as desired.Additionally, the most all of feature, side Face and advantage be all put into practice essential to the invention.Therefore, the scope of the present invention is intended to only be limited by claims below Fixed.

Claims

1. a face shield assembly, including a mask seal part, this mask seal part include contact face proximal rim and Towards the surface of far-end, this mask seal part also includes a top and a bottom, and this top includes that bridge of the nose part is the most relatively Being pivotable in this bottom, this top includes that one that is positioned between first border and a second boundary has The region of the stiffness reduced, this first border is that the degree without a break that the stiffness in the region by the stiffness than this with reduction is big comes Limiting, this second boundary is that the degree without a break that the stiffness in the region by the stiffness than this with reduction is big limits, its In, when this first border is moved towards this second boundary, the region of this stiffness with reduction is rolled up on a single direction Bent and limit a material wound section, this material wound section along with this first border continue towards this second boundary move and away from Proximal rim or the sidepiece of this contact face increase in size, thus promote this nose bridge split-phase of this mask seal part for The movement of this bottom of this mask seal part.

2. face shield assembly as claimed in claim 1, wherein, this second boundary is positioned at this top of this mask seal part and is somebody's turn to do Between bottom.

3. face shield assembly as claimed in claim 1 or 2, wherein, this face shield assembly farther includes relative to this mask seal Having a mask seal part fixture of the rigidity of increase for part, this mask seal part fixture is integrated into this mask seal part In, thus this mask seal part fixture is inseparable with this mask seal part.

4. face shield assembly as claimed in claim 3, wherein, this mask seal part is overmolded into this mask seal part fixture On.

5. face shield assembly as claimed in claim 3, wherein, this second boundary is positioned in this face along this mask seal part Part restriction between the region of the stiffness with reduction of shield closure fixture and this mask seal part.

6. face shield assembly as claimed in claim 3, wherein, the top of this mask seal part can be around extending transversely with leap The pivot axis of this face shield assembly pivots relative to the bottom of this mask seal part.

7. face shield assembly as claimed in claim 6, wherein, this mask seal part includes arc length, and this arc length is from this pivot axis Upwards and this mask seal part is crossed over and down to this pivot axis and this mask seal with the first intersection point of this mask seal part Second intersection point of part limits, and wherein, this arc length of this mask seal part increases to this first border from this second boundary.

8. face shield assembly as claimed in claim 6, wherein, this mask seal part includes at least the first arc length, this first arc length More longer than the arc length of this first arc length neighbouring of this mask seal part fixture.

9. face shield assembly as claimed in claim 6, wherein, the top of this mask seal part includes when observing from side profile The radius variable started from this pivot axis, and wherein, this radius from the proximal rim of this contact face to this towards far-end Surface reduce, and/or wherein, this mask seal part fixture includes the radius started from this pivot axis, when from this side When facial contour is observed, this radius is less than the radius of this mask seal part to provide compensation.

10. face shield assembly as claimed in claim 6, wherein, the top of this mask seal part is oriented in the vertical direction Higher than this pivot axis.

11. face shield assemblies as claimed in claim 3, wherein this material wound section overlays at least the one of this mask seal part fixture In part.

12. face shield assemblies as claimed in claim 1 or 2, wherein, this first border is to limit along a strengthening part 's.

13. face shield assemblies as claimed in claim 12, wherein, this strengthening part includes a band, and this band is by this face shield The part restriction with the stiffness strengthened for peripheral region on this top of sealing member.

14. face shield assemblies as claimed in claim 13, wherein, this band having relatively by this top of this mask seal part The part restriction of the thickness increased for the region that stiffness reduces, and wherein, form limit this band this The material divided is identical with the material forming this mask seal part.

15. face shield assemblies as claimed in claim 1 or 2, wherein, the region of this stiffness with reduction be defined as relative to This first border has the thickness reduced.

16. face shield assemblies as claimed in claim 1 or 2, wherein, this second boundary is to be come by a turning with minor radius Limit, and/or wherein, this second boundary is increased by having of this mask seal part for the region that stiffness reduces The part restriction of big thickness.

17. face shield assemblies as claimed in claim 1 or 2, wherein, this material wound section quilt on this top of this mask seal part It is configured to rolling to the outer surface of this face shield assembly.

18. face shield assemblies as claimed in claim 17, wherein, this material wound section on this top of this mask seal part is by structure Cause rolling to another part of this mask seal part.

19. face shield assemblies as claimed in claim 1 or 2, wherein, this face shield assembly also includes having relative to this mask seal The mask seal part fixture of the rigidity increased for part, and when this first border is moved completely towards this second boundary, should Material wound section overlay on this mask seal part fixture at least some of on.

20. face shield assemblies as claimed in claim 1 or 2, wherein, this mask seal part is configured to the bridge of the nose around user Region and mouth region, and wherein, the bridge of the nose part of this mask seal part is configured to being somebody's turn to do relative to this mask seal part Bottom is moved, thus the active force being applied to this nasal bridge region is held substantially constant, and the active force applied by this mouth region increases Add.