CN106473839A - One kind can expand catheter sheath and intervention apparatus conveying device - Google Patents
One kind can expand catheter sheath and intervention apparatus conveying device Download PDFInfo
- Publication number
- CN106473839A CN106473839A CN201610845799.3A CN201610845799A CN106473839A CN 106473839 A CN106473839 A CN 106473839A CN 201610845799 A CN201610845799 A CN 201610845799A CN 106473839 A CN106473839 A CN 106473839A
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- China
- Prior art keywords
- tube wall
- catheter sheath
- expand
- wall
- catheter
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0662—Guide tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
- A61F2/2466—Delivery devices therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M2025/0024—Expandable catheters or sheaths
Abstract
The invention discloses one kind can expand catheter sheath and intervention apparatus conveying device, the catheter sheath that the present invention can expand, including tube wall, the tube wall is volume wall construction, cross section is winding escalator, the tube wall has the pre-setting state for by swollen state and voluntarily recovering winding-structure for launching corresponding site volume wall construction, catheter sheath of the present invention, with specific cross sectional shape, when intervention apparatus are conveyed, only on the position that intervention apparatus are passed through, change shape (i.e. sectional area) according to the external dimensions of intervention apparatus, after intervention apparatus pass through, can recover by natural resiliency to the state of former pre-setting, be conducive to penetrating thinner blood vessel, calcification plate is avoided to come off, reduce operation risk.
Description
Technical field
The present invention relates to intervention apparatus technical field, more particularly to a kind of catheter sheath and the interposers of the catheter sheath is applied
Tool conveying device.
Background technology
With Endovascular interventional treatment extensive application worldwide, its complication also increasingly manifests.With intervention
As a example by aortic valve and cusps of pulmonary valve replacement operation, due in surgical procedure, needing to wear through femoral artery or femoral vein
Thorn, is then mounted with the delivery sheath of valve through femoral artery or femoral vein conveying, now needs elder generation at the cavity of resorption openings in blood vessels
A catheter sheath is inserted, to protect cavity of resorption blood vessel.As the size of current aortic valve or pulmonary valve delivery sheath exists
Between 16F-24F, direct delivery sheath, it is easy to cause vascular dissection, or even the problem of rupture of blood vessel.
Referring to Fig. 1, existing intervention apparatus delivery sheath 1 is slim-lined construction on the whole, uploads intervention apparatus (for example artificial
Valve) after, the position of the loading section 2 of delivery sheath is diameter largest segment, ordinary circumstance diameter >=6mm (18Fr) diameter≤
8.7mm (26Fr), in prior art, catheter sheath 3 passes through to allow delivery sheath 1, and the internal diameter of whole catheter sheath need to be all bigger
Load the external diameter of section 2 in delivery sheath, i.e., so that conduit minimum diameter size also have to be larger than the most thick diameter that conveying sheath passes through,
So that catheter sheath gabarit diameter entire body is thicker.
In prior art, the external diameter of catheter sheath is all fixing, therefore can not cover the cavity of resorption blood vessel diameter of all patients
There is the aorta vessel of calcification with vascular wall, especially patient's cavity of resorption blood vessel of China and other Asian countries becomes narrow and small,
If therefore cannot adapt to catheter sheath is placed, protection of the patient at puncture to blood vessel will be reduced；Or even some Aged Patients
Aorta vessel have calcification, insert large-diameter guide sheath and be likely to result in calcification plate and come off.And catheter sheath is to be put into earliest
Ink vessel transfusing, the apparatus that finally withdraws from, the time is longer in intravascular, if long-time major diameter expansion of blood vessels easily causes blood vessel convulsion
Contraction, threatening increases postoperative complication probability.
Content of the invention
The present invention provides a kind of catheter sheath, and tube wall has specific cross sectional shape, and pre-setting diameter is little, leads in intervention equipment
Out-of-date, its tube wall contour dimension resiliency synchronization changes shape (i.e. sectional area) in the intervention equipment external dimensions for passing through, little straight
Diametered duct sheath not only contributes to penetrate thinner blood vessel and adapts to more patient's scopes, and is also applied for aorta vessel and has calcium
Change patient, it is to avoid calcification plate comes off thrombus is formed, reduce operation risk, moreover it is possible to reduce the lasting expansionary force to blood vessel, reduce
Complications.
A kind of catheter sheath for expanding, including tube wall, the tube wall is volume wall construction, and cross section is winding escalator, the tube wall
Recover to roll up the pre-setting state of wall construction by swollen state and voluntarily with expansion corresponding site volume wall construction.
In the present invention, tube wall by swollen state, refer to delivery sheath by way of tube wall when, tube wall is acted on by external force, send out
Give birth to elastic deformation and expand.In the present invention, the pre-setting state of tube wall, refers to original state during the non-stress of tube wall, or warp
After external force revocation, recover to original state during non-stress or the state close to original state.For example：When delivery sheath warp
After crossing tube wall, tube wall recovers to original state during non-stress or the state close to original state.When tube wall elasticity is good enough
When, external force revocation after, tube wall can recover to original state, or tube wall is slightly expanded with respect to original state, recover to be close to
Original state.Thus, tube wall through delivery sheath by way of after, can recover to pre-setting state, this depending on tube wall material choosing
Select.
In the present invention, near-end refers to the one end near focus, and distal end refers to the one end away from focus.Such as tube wall, leans on
One end (away from one end of handle) of nearly focus, referred to as near-end；And away from focus, the one end near handle is referred to as distal end.
Existing delivery sheath is slim-lined construction on the whole, and generally only local diameter is larger (as loaded the dress of intervention apparatus
Carry section), the catheter sheath of prior art passes through to allow delivery sheath, and the selection of supporting catheter sheath need to can be passed through with its internal diameter
The local maxima diameter of delivery sheath is defined (and off board section of induction system is often very thin), i.e. catheter sheath entire body is thicker, this
So that catheter sheath cannot adapt to the patient of thinner blood vessel.
Catheter sheath according to the present invention adopts volume wall construction circumferentially and with pre-setting state, it should be understood that
Possess certain elasticity in itself for its material or can at least deform upon and can recover after external force is cancelled stress non-to catheter sheath
When pre-setting state, the tube wall of catheter sheath of the present invention can rely on natural resiliency local/all receiving swollen state and pre-setting
Convert between state, therefore catheter sheath pre-setting diameter can be made thin thin, and its internal diameter can be less than delivery sheath local maxima
Diameter dimension is a lot.
During use, tube wall corresponds only to launch on the major diameter position residing for intervention apparatus, once intervention apparatus pass through, volume
Wall construction restores immediately, and so, catheter sheath just can be with the thinner blood vessel of its pre-setting state insertion, only in intervention apparatus
Do on the position that passes through that of short duration expansion is thicker, the dilatating and deformable of blood vessel and stimulating will be minimized.
The tube wall is can be in the elastomeric material for receiving to switch between swollen state and pre-setting state.The material of such as tube wall
Selected from HDPE or Pebax etc.；In order to ensure that tube wall independently can be restored after external force is cancelled, and keep certain intensity and comply with
Property, preferably, the thickness of the tube wall is 0.2～0.5mm.
Preferably, the tube wall external diameter of pre-setting state is 4～9mm.Further preferably 5-6mm.
Suitable external diameter, allow catheter sheath be applied to thinner blood vessel, can also obtain more submissive and by property.
In order to coat and be formed the passage of delivery sheath, preferably, the tube wall winding of pre-setting state is more than a circle
In week, mutually it is stacked with beyond 360 degree of circumferential sections and the part in 360 degree.
Due to requiring that delivery sheath voluntarily recovers to roll up the pre-setting state of wall construction by rear tube wall, therefore mutual clinch
Position has smooth contact surface, i.e., there is no the shape or component for mutually stopping that impact is restored.
I.e. on the same place cross section of pre-setting state tube wall, extend in the circumferential greatly from the origination side of winding to end side
In 360 degree, tube wall extends the superposed overlap joint in more than 360 degree of position.
As further preferred, it is more than or equal to 360 degree by the tube wall winding of swollen state.The conveying of inside so can ensure that
Sheath and intervention apparatus do not expose.
With existing catheter sheath be clearly distinguished from be, existing catheter sheath can be considered winding 360 degree, i.e., lucky one week, in addition show
The tube wall for having catheter sheath is closing in the circumferential, and cross sectional shape will not also change.
Although local is superposed in the circumferential for the catheter sheath of the present invention, but is not closing.This is also volume wall construction
The reason for can launching, when separately circumferentially, can make along smooth curved path, it is also possible to circuitous configuration,
For example along wave or zig-zag path circumferentially extending, such that in the change of catheter sheath cross sectional shape more flexibly, certainly,
The forfeiture of tube wall diametrically compliance during from other forms, can not be ignored.
The i.e. corresponding central angle of the number of degrees of tube wall winding, the number of degrees are bigger, tube wall allow that intensity of variation is bigger, but winding
Excessively will also result in excessive grade of mounted resistance to negatively affect, the concrete number of degrees can be calculated according to the diameter change of two states
Arrive, i.e., tube wall will have enough girths to surround the passage of intervention apparatus.
Preferably, the tube wall winding of pre-setting state is less than or equal to 720 degree.
In order to, under different conditions, can all form the closed channel of intervention apparatus, preferably, the volume wall construction exists
The origination side wound in circumference and end side are by flexible envelope film connection.
Tube wall discharges corresponding site under by swollen state and is rolled up wall construction and keep sealing for catheter sheath by flexible envelope film
Close.Flexible envelope film should be more prone to bend in the circumferential or roll over slightly lower rigidity with respect to other positions of tube wall
Folded, formed to circuitous configuration.
In order to receive flexible envelope film, at least a portion of the flexibility envelope film is in the centre of tube wall overlap
Layer.
Preferably, in the present invention, the entire body thickness of tube wall can be uniform, it is also possible to uneven, such as in order to more preferable
Storage flexibility envelope film, could be arranged to relatively thin tube wall in the origination side of tube wall and end side, and in tube wall
Between relatively thick tube wall is partly set.
As flexible envelope film is connected between origination side and end side, therefore on the path that tube wall extends, flexible
Envelope film can be considered roundabout position in the circumferential, and the roundabout position between origination side and end side is opened up under tube wall is by swollen state
Open and be in the intermediate layer of tube wall overlap.So can keep smooth inside and outside tube wall, for example, convey sheath
The movement of pipe.
Preferably, the turning point of the flexibility envelope film is provided with crease line.Crease line can be processed by thermal finalization and be added
Work, under pre-setting state, turning point can be more smooth.
The effect of flexible envelope film is to couple together the origination side of volume wall construction and end side, forms closed channel, enters
One step improves security, flexible envelope film due to giving a discount in tube wall switching state or twist, therefore wall thickness and ratio of rigidity
Tube wall itself is low.
Flexible envelope film can be using materials such as PTFE, and wall thickness is 0.1-1mm.It is preferred that 0.25-0.5mm.
Used as further preferably, the flexibility envelope film is circumferentially closed tubular structure, the flexibility envelope membrane tube
Shape structural section girth is long more than the wall in tube wall section, and tube wall fixes the outer wall for being covered in flexible envelope film.
In order to improve security and the factor such as easy to process further, flexible envelope film itself is tubular structure, this
Sample can avoid tube wall from being torn with flexible envelope film connecting portion, and the local discounting of flexible envelope film is roundabout, is accommodated in tube wall
Overlap in.
Preferably, the distal end one end of patient's focus (the during use away from) periphery of catheter sheath is enclosed with resilient sleeve.Permissible
Anti- Hemostatic Oral Liquid (or body fluid) is escaped from the gap of tube wall overlap.Preferably, the distal end of catheter sheath is connected with sheath handle, even
Socket part is wrapped up by the resilient sleeve.
The axial length of the resilient sleeve is 5～50cm.
The material of resilient sleeve is stretchy nylon, and thickness is 0.1-0.2mm.
The origination side for being wound as the better embodiment of the present invention, volume wall construction in the circumferential and end side are by flexibility
While envelope film connects, in the sheathed resilient sleeve in the outside of tube wall, duplicate protection is played, anti-Hemostatic Oral Liquid or body fluid are escaped.
The position that tube wall and flexible envelope film are contacted with delivery sheath has smooth surface, can reduce delivery sheath shifting
Dynamic frictional force, for tube wall and resilient sleeve own material, can select prior art.
Blood vessel is inserted for the ease of guiding catheter sheath, the near-end (near one end of patient's focus during use) of catheter sheath is for receiving
Mouth structure.
The catheter sheath of the present invention can adopt extrusion molding in processing for tube wall, then predetermined by being heat-treated acquisition
The tube wall of type state.
If flexible envelope film is additionally provided with, using first extrusion tube wall, then flexible envelope film can be welded on corresponding position,
Then heat treatment shaping.Tube wall and this double-decker of flexible envelope film can also be disposably extruded, then heat treatment shaping.
Preferably, the outside of the tube wall is surrounded by the collar for tube wall to be limited to pre-setting state, and the collar
It is split up under tube wall is by swollen state.
Preferably, the collar along tube wall axially extending go out tube wall near-end, the position that extends be closing-in structure.Described
Collar can also axially extend to the part in resilient sleeve near-end or resilient sleeve distal end or resilient sleeve or only covering tube wall along tube wall.
Collar improves the slickness of catheter sheath periphery further, in conjunction with closing-in structure, is easy to guiding to penetrate blood vessel.
Preferably, on the end side that winds in the circumferential of the volume wall construction, tying for corner cut tube wall proximal end is being closed on
Structure.
Used as winding-structure, the corner of end side is easily turned over and is stuck up, and impact penetrates blood vessel and advances in the blood vessel, therefore originally
Invention does corner cut process at the position, and in order to avoid corner cut, when flexible envelope film is arranged, flexible envelope film is along tube wall axial direction court
When near-end extends, the termination of tube wall is not extended to, but avoids corner cut position.
The present invention also provides a kind of intervention apparatus conveying device, including handle and connected with the handle by joint
Catheter sheath, the catheter sheath are catheter sheath of the present invention.
Catheter sheath of the present invention adopts takeup type structure, can achieve local expansion and recovery, has under pre-setting state
, beneficial to thinner blood vessel is penetrated, the scope of application is wider, eliminates potential safety hazard for less external diameter.
Description of the drawings
Fig. 1 is catheter sheath in prior art and the cooperation schematic diagram of the delivery sheath for being mounted with artificial valve；
Fig. 2 is the structural representation of catheter sheath (belt lacing) of the present invention；
Fig. 3 is the structural representation after the catheter sheath parcel resilient sleeve of Fig. 2；
Fig. 4 receives the swollen structural representation for launching volume wall construction for the catheter sheath local of Fig. 3；
Fig. 5 changes by the structural representation behind swollen position for the catheter sheath of Fig. 4；
Fig. 6 changes by the structural representation behind swollen position for the catheter sheath of Fig. 5；
Fig. 7 passes completely through the schematic diagram after catheter sheath for intervention apparatus；
Fig. 8 is catheter sheath (under pre-setting state) of the present invention schematic cross-section；
Fig. 9 is the schematic cross-section of the catheter sheath by swollen expansion of Fig. 8；
Figure 10 changes the schematic cross-section of winding angle for catheter sheath of the present invention；
Figure 11 is the schematic cross-section for being provided with flexible envelope film in catheter sheath of the present invention；
Figure 12 is schematic cross-section of the present invention flexibility envelope film for integral tubular；
Figure 13 receives the swollen schematic cross-section for launching volume wall construction for the catheter sheath of Figure 12.
Figure 14 is not yet surrounded for the tube wall end view of catheter sheath, in figure tube wall；
Figure 15 is the schematic diagram after the tube wall in Figure 14 surrounds；
Figure 16 is the schematic diagram for being surrounded by collar outside tube wall.
Specific embodiment
Embodiment 1
Referring to Fig. 2, in the present embodiment, the tube wall 4 of catheter sheath is volume wall construction, and cross section is winding escalator, and tube wall 4 has exhibition
Open the pre-setting state that wall construction is rolled up by swollen state and recovery of corresponding site volume wall construction.
Under pre-setting state, catheter sheath external diameter is 5mm (15Fr), internal diameter 4mm.By internal diameter under swollen state up to 8mm
(24Fr), corresponding diameter delivery sheath can be passed through.
Referring to Fig. 3, the distal end of catheter sheath is provided with the joint 5 coordinated with conveying device, the junction of catheter sheath and joint 5
Wrapped up by resilient sleeve 6.Can anti-Hemostatic Oral Liquid (or body fluid) escape from the gap of tube wall overlap.Resilient sleeve is from elastic Buddhist nun
Dragon, thickness are 0.1-0.2mm.
In the circumferential, volume wall construction is extended spirally by origination side, until end side, the end lateral boundaries of origination side can
Axially extending along catheter sheath or extend spirally around catheter sheath axis, in Fig. 3, visible end lateral boundaries 7 are straight line and along catheter sheath axle
To extension.During using helix, distribution of force when bending can catheter sheath is more evenly.
In conjunction with Fig. 4～Fig. 7, intervention apparatus are walked from right to left, can be extruded on the inside of tube wall through part so that the volume of tube wall
Wall construction accordingly launches, and pressurized position 8 is proceeded to by swollen state.
After intervention apparatus 100 are passed through, as the elasticity of itself of tube wall 4 voluntarily can be restored, initial pre-setting state is returned to.
In the present embodiment, tube wall material is selected from HDPE or Pebax etc., in order to ensure that tube wall independently can restore, and keeps one
Fixed intensity and compliance, the thickness of tube wall is 0.5mm.
Referring to Fig. 8, when being non-implantation instrument, the section in pre-setting state (during original state) downcomer sheath is illustrated
Figure, in order to coat and be formed the passage of delivery sheath, the tube wall winding of pre-setting state is more than 360 degree, i.e., from the starting of winding
Side 9 extends greater than 360 degree in the circumferential to end side 10, is stacked beyond 360 degree of parts and the part without departing from 360 degree.
Visible in Fig. 8, beyond part 11 with mutually overlap without departing from part 12, be wrapped in without departing from part beyond part 11
12 periphery, tube wall are internally formed complete passage.
Schematic cross-section when Fig. 9 is implantation instrument 18, when catheter sheath receives swollen.In order to avoid by delivery sheath under swollen state
And implantation instrument does not expose, Fig. 9 is visible, is more than or equal to 360 degree by the tube wall winding under swollen state, i.e., still has overlap overlap
Domain 13.
Overlap overlapping regions 13 to increase in Figure 10, the number of degrees of tube wall winding are that corresponding central angle is more big to be added further
Greatly 540 degree, bigger internal diameter can be obtained after its expansion, allow by thicker intervention apparatus.
Embodiment 2
As shown in figure 8, although beyond part 11 and mutually overlapping without departing from part 12, but not it is relatively fixed, they it
Between relative can slide, form gap so that blood or body fluid are possible to pass in and out tube wall, in order under different conditions, all can be with shape
Become the closed channel of intervention apparatus, the invention provides another embodiment, is set by the origination side in tube wall and end side
The form of flexible envelope film is put, closes tube wall.
In Figure 11, the origination side 9 of tube wall winding and end side 10 are connected by flexible envelope film 14.Flexible envelope film is main
The support force of a radial direction is played, implantation instrument is fettered, prevents which from exposing, while can also prevent blood or body fluid discharger wall.
Flexible envelope film 14 due to giving a discount in tube wall switching state or twist, therefore wall thickness and ratio of rigidity tube wall sheet
Body is low.The present embodiment flexibility envelope film 14 adopts PTFE material, and wall thickness is 0.25-0.5mm.
No matter for which kind of state, flexible envelope film 14 can all keep the closing of catheter sheath, flexible envelope film 14 to tube wall
Can mutually be fixed with tube wall by modes such as welding.
In order to receive flexible envelope film 14, flexible envelope film 14 is in the intermediate layer of tube wall overlap.Flexible envelope film
14 can extend one section in the circumferential, i.e. the inner chamber of the not whole tube wall of 360 envelope, under pre-setting state, flexible
Envelope film 14 is tightened between the origination side 9 of tube wall winding and end side 10, and the effect of flexible envelope film 14 is closing origination side 9
The gap formed and end side 10 between, anti-Hemostatic Oral Liquid or body fluid have turnover tube wall.Therefore the consolidating of flexible envelope film 14 and tube wall
Fixed point is not strict with origination side 9 and end side 10, it is also possible to appropriate adjustment.
In Figure 12, alternatively, flexible envelope film 14 is circumferentially closed tubular structure, and tube wall is fixed and pasted
In the outer wall of flexible envelope film 14, a portion of flexible envelope film 14 is circuity part 15, and circuity part 15 is in tube wall
Origination side 9 and end side 10 between.
The turning point 16 at roundabout position 15 and turning point 17 are provided with crease line, and crease line can be processed by thermal finalization and be added
Work, under pre-setting state, crease line can cause the turning point at roundabout position more smooth.
Referring to Figure 13, roundabout position 15 is launched under tube wall is by swollen state, can allow that tube wall has bigger deformation model
Enclose.
The present embodiment also provides a kind of intervention apparatus conveying device (in figure omission), including handle and by joint and hand
The connected catheter sheath of handle, the tube wall of the catheter sheath is from the mode in Figure 12.
Referring to Figure 14, Figure 15, roll up on the end side that wall construction is wound in the circumferential, 4 proximal end of tube wall is being closed on for corner cut
Structure 19.Used as winding-structure, the corner of end side is easily turned over and is stuck up, and the present invention does corner cut process at the position, is beneficial to and penetrates
Blood vessel, it is to avoid turn over the stop that sticks up.
Referring to Figure 16, the outside of tube wall 4 is surrounded by the collar for tube wall 4 to be limited to pre-setting state, and the collar exists
Tube wall is received to be split up under swollen state.Collar along tube wall axially extending go out tube wall near-end, the position that extends be closing-in structure 20.Collar
The slickness of catheter sheath periphery is further increased, in conjunction with closing-in structure, is easy to guiding to penetrate blood vessel.The pipe that the present embodiment is adopted
Wall material has the compliance of preferably elasticity, is radial dilatation by the expansion of tube wall under swollen state, does not result in wound to blood vessel
Evil, will not produce angiorrhoxis or interlayer.After the large-diameter portion position of delivery sheath passes through, the intact recovery of catheter sheath.
Claims (17)
1. a kind of catheter sheath for expanding, including tube wall, it is characterised in that the tube wall is volume wall construction, and cross section is winding escalator,
The tube wall recovers to roll up the pre-setting state of wall construction by swollen state and voluntarily with expansion corresponding site volume wall construction.
2. the catheter sheath that can expand as claimed in claim 1, it is characterised in that the tube wall is for swollen state is received and making a reservation for
The elastomeric material of autonomous switching between type state.
3. the catheter sheath that can expand as claimed in claim 2, it is characterised in that the tube wall external diameter of pre-setting state is 4-9mm.
4. the catheter sheath that can expand as claimed in claim 1, it is characterised in that the tube wall winding of pre-setting state is more than a circle
In week, mutually it is stacked with beyond 360 degree of circumferential sections and the part in 360 degree.
5. the catheter sheath that can expand as claimed in claim 4, it is characterised in that be mutually stacked with position and there is smooth contact surface.
6. the catheter sheath that can expand as claimed in claim 5, it is characterised in that the tube wall winding of pre-setting state is less than 720 degree.
7. the catheter sheath for expanding as described in any one of claim 1～6, it is characterised in that the volume wall construction is in the circumferential
The origination side of winding and end side are by flexible envelope film connection.
8. the catheter sheath that can expand as claimed in claim 7, it is characterised in that the turning point of the flexibility envelope film is provided with folding line
Line.
9. the catheter sheath that can expand as claimed in claim 7, it is characterised in that it is 0.1-1mm that flexible envelope membranous wall is thick.
10. the catheter sheath that can expand as claimed in claim 7, it is characterised in that the flexibility envelope film is circumferentially closed pipe
Shape structure, the flexibility envelope membrane tube shape structural section girth are long more than the wall in the tube wall section, and tube wall fixation is covered in soft
The outer wall of property envelope film.
11. catheter sheaths that can expand as claimed in claim 7, it is characterised in that the distal periphery of tube wall is enclosed with resilient sleeve.
12. catheter sheaths that can expand as claimed in claim 11, it is characterised in that the distal end of tube wall is connected with sheath handle, connecting portion
Wrapped up by the resilient sleeve.
13. catheter sheaths that can expand as claimed in claim 11, it is characterised in that the axial length of the resilient sleeve be 5～
50cm.
14. catheter sheaths that can expand as claimed in claim 1, it is characterised in that the outside of the tube wall is surrounded by for by tube wall
The collar of pre-setting state is limited to, and the collar is split up under tube wall is by swollen state.
15. catheter sheaths that can expand as claimed in claim 4, it is characterised in that the collar along tube wall axially extending go out tube wall
Near-end, the position that extends are closing-in structure.
16. catheter sheaths that can expand as claimed in claim 1, it is characterised in that the end that the volume wall construction is wound in the circumferential
In caudal, tube wall proximal end is being closed on for corner cut structure.
A kind of 17. intervention apparatus conveying devices, including handle and by joint catheter sheath connected with the handle, its feature
It is, the catheter sheath is the catheter sheath for expanding described in any one of claim 1～16.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845799.3A CN106473839B (en) | 2016-09-23 | 2016-09-23 | One kind can expand catheter sheath and intervention apparatus conveying device |
| PCT/CN2017/102199 WO2018054275A1 (en) | 2016-09-23 | 2017-09-19 | Extendable catheter sheath and interventional instrument conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845799.3A CN106473839B (en) | 2016-09-23 | 2016-09-23 | One kind can expand catheter sheath and intervention apparatus conveying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106473839A true CN106473839A (en) | 2017-03-08 |
| CN106473839B CN106473839B (en) | 2019-04-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610845799.3A Active CN106473839B (en) | 2016-09-23 | 2016-09-23 | One kind can expand catheter sheath and intervention apparatus conveying device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106473839B (en) |
| WO (1) | WO2018054275A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018054275A1 (en) * | 2016-09-23 | 2018-03-29 | 杭州启明医疗器械有限公司 | Extendable catheter sheath and interventional instrument conveying device |
| WO2018236953A1 (en) | 2017-06-21 | 2018-12-27 | Edwards Lifesciences Corporation | Expandable sheath and methods of using the same |
| CN112568945A (en) * | 2020-12-03 | 2021-03-30 | 彭涛 | Ureter soft lens introducing sheath with adjustable pipe diameter and capable of displaying pipe diameter |
| CN112642044A (en) * | 2021-01-07 | 2021-04-13 | 上海翰凌医疗器械有限公司 | Dilating tube and vascular sheath |
| CN112891021A (en) * | 2020-12-31 | 2021-06-04 | 深圳市先健畅通医疗有限公司 | Lumen device and conveyor |
| WO2021217566A1 (en) * | 2020-04-30 | 2021-11-04 | 上海英诺伟医疗器械有限公司 | Sheath, and surgical assembly and use method therefor |
| WO2023006074A1 (en) * | 2021-07-30 | 2023-02-02 | 北京迈迪斯医疗技术有限公司 | Puncturing instrument |
| CN116251289A (en) * | 2022-10-25 | 2023-06-13 | 苏州心擎医疗技术有限公司 | Catheter pump and method for folding pump head of catheter pump |
| CN112891021B (en) * | 2020-12-31 | 2024-05-10 | 先健科技(深圳)有限公司 | Lumen device and conveyor |
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| US11786695B2 (en) * | 2018-07-25 | 2023-10-17 | Edwards Lifesciences Corporation | Methods of making an expandable sheath |
| CA3142896A1 (en) * | 2020-02-27 | 2021-09-02 | Edwards Lifesciences Corporation | Expandable sheath for introducing an endovascular delivery device into a body |
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| WO2018054275A1 (en) * | 2016-09-23 | 2018-03-29 | 杭州启明医疗器械有限公司 | Extendable catheter sheath and interventional instrument conveying device |
| WO2018236953A1 (en) | 2017-06-21 | 2018-12-27 | Edwards Lifesciences Corporation | Expandable sheath and methods of using the same |
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| WO2021217566A1 (en) * | 2020-04-30 | 2021-11-04 | 上海英诺伟医疗器械有限公司 | Sheath, and surgical assembly and use method therefor |
| CN112568945A (en) * | 2020-12-03 | 2021-03-30 | 彭涛 | Ureter soft lens introducing sheath with adjustable pipe diameter and capable of displaying pipe diameter |
| CN112891021A (en) * | 2020-12-31 | 2021-06-04 | 深圳市先健畅通医疗有限公司 | Lumen device and conveyor |
| CN112891021B (en) * | 2020-12-31 | 2024-05-10 | 先健科技(深圳)有限公司 | Lumen device and conveyor |
| CN112642044A (en) * | 2021-01-07 | 2021-04-13 | 上海翰凌医疗器械有限公司 | Dilating tube and vascular sheath |
| CN112642044B (en) * | 2021-01-07 | 2023-08-25 | 上海翰凌医疗器械有限公司 | Dilating tube and vascular sheath |
| WO2023006074A1 (en) * | 2021-07-30 | 2023-02-02 | 北京迈迪斯医疗技术有限公司 | Puncturing instrument |
| CN116251289A (en) * | 2022-10-25 | 2023-06-13 | 苏州心擎医疗技术有限公司 | Catheter pump and method for folding pump head of catheter pump |
| CN116251289B (en) * | 2022-10-25 | 2023-12-01 | 心擎医疗（苏州）股份有限公司 | Catheter pump and method for folding pump head of catheter pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018054275A1 (en) | 2018-03-29 |
| CN106473839B (en) | 2019-04-19 |
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Inventor after: Wang Jianan Inventor after: Zeng Min Inventor before: Zeng Min |
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Address after: 310051 311, 3 building, 2 building, 88 Jiangling Road, Binjiang District, Hangzhou, Zhejiang. Applicant after: Hangzhou Qiming Medical Devices Co., Ltd. Address before: 310051 2 Building 3, No. 88 Jiangling Road, Binjiang District, Hangzhou City, Zhejiang Province Applicant before: Hangzhou Qiming Medical Device Co., Ltd. |
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