CN202699833U - Needle tip protection device and catheter device - Google Patents
Needle tip protection device and catheter device Download PDFInfo
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- CN202699833U CN202699833U CN 201220042366 CN201220042366U CN202699833U CN 202699833 U CN202699833 U CN 202699833U CN 201220042366 CN201220042366 CN 201220042366 CN 201220042366 U CN201220042366 U CN 201220042366U CN 202699833 U CN202699833 U CN 202699833U
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Abstract
The utility model discloses a catheter device 1000 which comprises a needle tip protection device 100, a catheter head 200 and a needle tip unit 300, wherein the needle tip unit 300 is provided with a connecting device 301 which is used to be connected with the catheter head 200 and a connecting device 302 which is used to be connected with an external device. The needle tip protection device 100 comprises a body, the body is provided with a back surface 106, a front surface 107, an outer surface 108 which is used to connect the back surface 106 with the front surface 107, a hole 102 which extends from the back surface 106 to the front surface 107, and an elastic arm 103 which extends from a fixed point 105 on the front surface 107 of the body, wherein the elastic arm 103 has a natural state, and from the natural state, and the elastic arm 103 can be compressed to be bent to penetrate through the hole 102 along the axial direction of the body freely. When the elastic arm 103 is in the natural state, the elastic arm 103 can be used to clamp a needle tip 304 of a hollow needle head 303 when the hollow needle head 303 extends along the direction from the back surface 106 to the from surface 107 after penetrating through the hole 102.
Description
Technical field
The present invention relates to a kind of catheter device, comprise one be used for use syringe needle insert stream guiding tube after to the needle tip guard of syringe needle automatic safeguarding.
Background technology
The known ground of medical field, the clinical practice that is installed in the sharp-pointed hollow pinhead of flexible fluid-directing flexible pipe inside is the insertion for conduit.In this type of armarium, described stream guiding tube is fixed on around the syringe needle tightly, and this syringe needle can be slided along the length direction of described stream guiding tube and collapse.Before using, the opening that the needle point of described syringe needle passes stream guiding tube stretches out slightly, to be convenient to thrust skin.When piercing through skin and inserting syringe needle, the end of stream guiding tube is brought into the target location in the patient's body lumen simultaneously, such as the inside of blood vessel, for example vein.This moment, syringe needle was finished its task of helping conduit to insert, afterwards by being pulled back and it is extracted by described conduit.After syringe needle was pulled out, conduit was placed in its original mode of operation in the longer time, comprised, for example, periodically apply or the medicine of filling liquid or liquid form, and blood sample collection, etc.
Yet in view of the following fact, the syringe needle that is pulled out that does not add protection has serious health risk: it may be infected with the source of infection that for example is derived from blood samples of patients or other body fluid, and needle point itself is easy to pierce through the ability of skin.Therefore, unexpected with its skin that touches oneself corresponding disease of PI on the spot, such as HIV or hepatitis if dispose the medical personnel of the syringe needle extract.In order to evade or to reduce this risk that syringe needle brings of extracting that is mixed in other article, people have dropped into a large amount of energy at all kinds of needle tip protectors of exploitation, particularly concentrate on the research to all kinds of automatic type structures that are called as " point-and-shoot protector ".
The patent US6616630B1 of B.Braun Melsungen A.G. a kind of safety IV catheter of openly knowing clearly comprises an elastomeric spring folder that is usually located in the conductor housing.The syringe needle of this safety IV catheter passes and is used for making the axially movable perforate of syringe needle on the described alligator clamp.When syringe needle is positioned at extended position, namely get ready in advance when being used when described safety IV catheter, because the existence of syringe needle, the part of described alligator clamp is pushed into these parts are locked on the position of described conductor housing inside, thereby prevented the movement of alligator clamp with respect to conductor housing.When being extracted to needle point and passing the position of these parts along with syringe needle, described alligator clamp is clamped to the position that stops the contact of needle tip.Simultaneously, this position is deviate from the position that locks onto conductor housing inside before the described alligator clamp, thereby alligator clamp can be moved with respect to conductor housing.When described syringe needle is further extracted out, have such as groove or blocking device at syringe needle, so that described alligator clamp is locked onto on the syringe needle, thereby make alligator clamp from conductor housing, be taken out and be fixed on the syringe needle with syringe needle.
For multiple reason, comprise, for example practicality, economic and technical reason, similar variant all must be used the metal manufacturing now on above-mentioned alligator clamp and the market, and conductor housing is made with plastic material.The shortcoming of the combination of these materials comprises when the extraction along with syringe needle is removed metal clip from the plastic catheter head in this application, and the scratch by metal clip and plastic catheter head inside can discharge minimum plastic flakes and metallic particles.These fragments and granule easily are washed into patient's blood flow in the normal use of this corresponding pipe, thereby the patient is caused serious health risk again.
Similar variant on the metal clip of type mentioned above and the market, and syringe needle all must be made with metal at present.This kind metal clip and similarly a shortcoming of safety IV catheter be scratch vibration along with syringe needle is drawn out of it between metal clip or metal clip slides and produces.This scratch vibration is because metal produces in the metal slip, and can clearly be heard and feel, this does not accommodate naked state and be very uncomfortable and discomforting the patient of anxiety very for being in.
The drop of blood that may flow out from conductor housing inside when further, the metal clip of type mentioned above itself is drawn out of for syringe needle or the drop of body fluid can not provide good protection.These drops for example, may be propagated infectious disease.
The patent GB2451153 (A) of Poly Medicure Ltd discloses a kind of needle safety apparatus for venous duct equipment, comprises a pedestal, and pedestal can be taken in syringe needle being connected between the relative jaw of this pedestal, and can be touched by syringe needle.Described Hubei Province sheet has the chain link that connects each Hubei Province sheet and keep certain distance to arrange with described pedestal.Described Hubei Province sheet can move between an expanded position, and they can act on mutually with the obstruction with wing intracavity at venous duct equipment in this position.Described Hubei Province sheet allows the relative motion between syringe needle and the described pedestal upon deployment, when needle point passes described Hubei Province sheet closely around living needle point, and when Hubei Province sheet is folded the relative motion between prevention syringe needle and the described pedestal.
Yet when folding, each described Hubei Province sheet the most mostly can not extend to more than the central shaft of described syringe needle.Therefore, the needle point of syringe needle specific Hubei Province sheet pointed may relatively easily expose needle point, if this Hubei Province sheet just in time is bent.In addition, described Hubei Province sheet need to use a chain link and gather together.This chain link shows as an optional feature of this device, the manufacturing complicated that this has increased cost and has made this product.
The patent EP657184 (A1) of BOC Group plc discloses a kind of medical treatment device; for example a kind of IV sleeve pipe or syringe; it comprises the hollow pinhead that has be used to the sharp-pointed end that punctures patient skin, also comprises for the tip of protecting syringe needle after using with the device with the minimizing possibility of accidental needle sticks.Described device comprises and is installed to syringe needle in order to pass the bar that syringe needle moves, described bar in hollow pinhead inside from the terminal protective position of syringe needle to mobile the retrieving position.Described device also comprises the device that keeps described bar to be positioned at the terminal protective position of described syringe needle.
Yet because needle point is protected in described protective position, if syringe needle almost streaks skin abreast or with very little angle, syringe needle might cause the risk of skin tears.
Therefore, wish to have a kind of modifying device that after using syringe needle insertion stream guiding tube, the needle point of syringe needle is carried out automatic protection.
Summary of the invention
Consider defects, the purpose of this invention is to provide a kind of safety catheter equipment and needle tip guard, it eliminates the vibration of scratching when syringe needle is drawn out of, and perhaps reduces these vibrations.
Another object of the present invention provides a kind of needle tip guard, has improved protection to be drawn out of the blood that flows out from the inside of conductor housing or the drop of body fluid from safety catheter equipment along with syringe needle.
Another object of the present invention provides a kind of needle tip guard, and it can produce from the conductor housing extraction least risk of inner scratch at the latter's inner surface.
Another object of the present invention provides a kind of needle tip guard, and it can be extracted out and generation shed particles, for example least risk of plastics or metal particle from conductor housing.
Another object of the present invention provides a kind of needle tip guard, in the safety that has improvement aspect the protection of needle point.
Another object of the present invention provides a kind of needle tip guard, is easy to low cost fabrication.
Other purpose that occurs in these purposes and the introduction hereinafter, can be realized by the device of realizing according to one aspect of the present invention, this device comprises a plastics needle tip guard, needle tip guard comprises a main body, main body has the back side, front, the described back side of connection and positive outer surface, extend to positive hole from the back side, and from the elastic arm of the positive self-retaining point extension of main body; Wherein elastic arm has naturalness, certainly this state its can be forced to be bent to and allow to pass freely through described hole along axis of the body; Described elastic arm under naturalness, when hollow pinhead along from the described back side when the direction in described front is passed described hole and extend forward, this elastic arm vises the needle point of hollow pinhead; And when elastic arm in the raw the time, wherein the imaginary line that extends along its length of any hole of passing axis of the body is all with described elastic arm or its extension is more lip-deep coincides; The wherein said back side comprises the groove with the face that inclines, and has the opening in described hole in this groove.
According to a further aspect in the invention, described needle tip guard be constructed to circle, the taper or cylindrical of cutting sth. askew.
According to a further aspect in the invention, described needle tip guard has back of the body hook extension, with the elastic arm of back of the body hook extension thereby have shape, wherein lower in the raw when elastic arm, the point on any imaginary straight line elastic arm surface between fixing point and the inside corner all and in the L shaped elastic arm coincides; And when elastic arm and described back of the body hook extension vised described needle point jointly, wherein any imaginary straight line all coincided with the point on described back of the body hook extension surface, perhaps and the surface point between fixing point and the turning coincide.
According to a further aspect in the invention, in use, the elastic arm of needle tip guard or its any extension can have maximum external contact point, and described contact point is and the contacted contact point of any part of hollow pinhead.
According to a further aspect in the invention, the internal diameter in described hole is equal to or slightly greater than the external diameter of hollow pinhead shank, slides and guide effect in order to provide between shank and needle tip guard.
According to a further aspect in the invention, described needle tip guard can comprise be shaped as circle, cut sth. askew taper or columniform main body, main body has the back side, front, the described back side of connection and positive outer surface, extend to positive hole from the back side, and the elastic arm that extends at fixing point from the front of main body; Wherein elastic arm has naturalness, certainly this state its can be forced to be bent to and allow to pass freely through described hole along axis of the body; Elastic arm with back of the body hook extension has shape, is used for vising when the direction from back-to-front extends through described hole at hollow pinhead the needle point of hollow pinhead; When elastic arm in the raw the time, the point along the imaginary straight line that axially passes described hole and extend along its length of the described main body elastic arm surface between fixing point and the inside corner all and in the L shaped elastic arm coincides arbitrarily; Thereby wherein jointly vise when protecting described needle point when elastic arm and back of the body hook extension; any above-mentioned imaginary line all coincides with the point of carrying on the back hook extension surface; perhaps and the surface point between fixing point and the turning coincide; and wherein elastic arm or its any extension can have maximum external contact point in use, and described contact point is and the contacted contact point of any part of hollow pinhead.
According to a further aspect in the invention, described needle tip guard can be made of the moulded plastic material.In this respect, needle tip guard can be by molding, and for example injection molding is piece and/or an integral unit of a homogeneity, and need to not splice between its different piece.
According on the other hand, described outer surface has at least one projection.
According on the other hand, the described back side has tapered protrusion, and described hole is passed tapered protrusion and extended.
According on the other hand, the described back side greater than described front so that outer surface forms the oblique angle of 0 degree in the 10 degree scopes.
According on the other hand, the length of described back of the body hook extension is measured from described turning to the most outstanding part, is 0.5 to 6 times of described bore dia.
According on the other hand, the angle of inboard, turning at 60 degree in the scopes of 110 degree.
According on the other hand, described main body is oval-shaped.
According on the other hand, the elastic arm of described needle tip guard has anti-back towing extension, is used for preventing needle tip guard accidental movement on the direction from the front to the back side when needle tip guard is installed in catheter device.
According on the other hand, the front of described needle tip guard has the arm on the length direction, and being used for provides additionally protective shield to needle point or hollow pinhead.
According to a further aspect in the invention, a kind of catheter device is provided, comprise needle tip guard, conductor housing and needle unit, wherein said needle unit has be used to the connecting device that is connected to described conductor housing, and is used for being connected to the connecting device of external device (ED), and is fixed on the rear end of hollow pinhead, and wherein when needle unit was connected to conductor housing by described connecting device, conductor housing was connected to the conduit that extends on the length direction identical with hollow pinhead.
Further feature of the present invention and its specific embodiment are set forth in appending claims.
Description of drawings
These and other direction that has of the present invention, feature and advantage will be below to more clear in the introduction of the non-limiting specific embodiment of the present invention and set forth clearly, and in conjunction with appended accompanying drawing, wherein
Fig. 1 is that catheter device according to a specific embodiment is under dormant state, it is its insertion side X-section view before that is used for stream guiding tube, comprise the needle tip guard according to a specific embodiment, the conductor housing of a specific embodiment and needle unit according to the present invention;
Fig. 2 is the side X-section view according to the needle tip guard of a specific embodiment, according to the specific embodiment of the present invention, described needle tip guard is installed in the conductor housing, and hollow pinhead is drawn to, and expansion area arrives and the position of the contact point of elastic arm;
Fig. 3 is the side X-section view according to the needle tip guard of a specific embodiment, according to the specific embodiment of the present invention, described needle tip guard is installed in the conductor housing, and hollow pinhead is drawn to the position that expansion area arrives the hole, thereby prevents hollow pinhead further moving backward with respect to conductor housing in the situation that needle tip guard does not disconnect with conductor housing;
Fig. 4 is the side X-section view according to the needle tip guard of a specific embodiment and conductor housing disconnection, according to the specific embodiment of the present invention, wherein hollow pinhead is advanced the foremost edge distance D 1 in rear end and the hole of expansion area, thereby needle point and turning coincide;
Fig. 5 is the three-dimensional view according to the needle tip guard of a specific embodiment, according to the specific embodiment of the present invention, described needle tip guard comprises main body, described main body has rounded rear surface, circular positive, connect rounded rear surface and circular positive outer surface, extend to described circular positive circular port from described rounded rear surface, the elastic arm that extends from the front of described main body;
Fig. 6 is the side X-section view according to the needle tip guard of a specific embodiment, according to the specific embodiment of the present invention, described needle tip guard is installed in the zone that conductor housing medium dip angle is 0 degree, and wherein elastic arm has anti-back towing extension, and conductor housing has the conductor housing protuberance; And
Fig. 7 is the three-dimensional view of a specific embodiment of needle tip guard, according to the specific embodiment of the present invention, described needle tip guard comprises the front with tapered protrusion, outer surface with 4 (wherein 2 invisible in the drawings) equally distributed projections, and the arm on the length direction that extends from the front
The specific embodiment
The specific embodiment that present invention is described in more detail below with reference to the accompanying drawings is so that those skilled in the art can realize the present invention.Yet the present invention can be realized in multiple different mode, and can not be interpreted as the specific embodiment that only limits to set forth here.Provide these specific embodiment in order to reach and disclose fully, and express all sidedly scope of the present invention to those skilled in the art.The specific embodiment and unrestricted the present invention, scope of the present invention is only limited by appended claim.And the term that uses in the specific descriptions of specific implementations shown in the drawings is not to be intended to as limitation of the present invention yet.
Introduce the specific embodiment of the present invention below with reference to Fig. 1 to 7.
Referring to Fig. 1, a kind of catheter device 1000 is provided, comprise a needle tip guard 100, conductor housing 200 and needle unit 300.Described needle unit 300 has be used to the connecting device 301 that is connected to described conductor housing 200, and is used for being connected to external device (ED), for example connecting device 302 of syringe or similar device.It in known manner, molding or gluing for example, mechanically and hermetically be fixed on the rear end of hollow pinhead 303, thus allow from the rear end of needle unit 300 to hollow pinhead 303 needle point 304 and from the needle point 304 of hollow pinhead 303 to the rear end both direction of needle unit 300 on liquid flow.Described hollow pinhead 303 can be by the metal manufacturing, and is the syringe needle of commonly used in medical field and known type, is used for puncturing patient's skin.
Described needle tip guard 100 is fixed in the inside of described conductor housing 200 in order to by a conductor housing contact area the former outer surface is contacted with the latter's inner surface.Needle tip guard 100 is subject to the restriction of the structure of at least one projection 101 with respect to the movement of conductor housing 200, projection 101 and conductor housing contact area are positioned at the outer surface 108 of described needle tip guard 100.Projection 101 produces corresponding mint-mark in conductor housing 200 inner surfacies that it contacts.The syringe needle 303 of hollow is movably in the longitudinal direction, and it passes the hole 102 in the described needle tip guard 100.Described hole 102 has the diameter that hollow pinhead 303 can be slipped over from the centre.The diameter in hole 102 can, for example, be a bit larger tham the external diameter of described hollow pinhead 303, perhaps identical with it.Hollow pinhead 303 has an expansion area 305 near needle point 304, described expansion area 305 is zones on hollow pinhead 303, and effective diameter is greater than other zone on the syringe needle on should the zone on the hollow pinhead 303 rear extreme directions.The increase of the effective diameter of the hollow pinhead 303 that produces by expansion area 305 has makes this zone can not pass the effect that move in hole 102.
Under dormant state, that is, before it was used to the insertion of stream guiding tube, the following feature of described catheter device 1000 was effective: (i) needle unit 300 is connected device 301 and is connected to conductor housing 200; (ii) hollow pinhead 303 passes the hole 102 of needle tip guard 100, and described needle tip guard 100 is installed in the inside of conductor housing 200, thereby limits described needle tip guard 100 with respect to the movement of conductor housing 200.Thereby hollow pinhead 303 contact resilient arms 103 make it be forced to break away from the nature resting position.(iii) hollow pinhead 303 further passes conduit 201 extensions so that needle point 304 is given prominence to the opening of conduit 201 slightly, in order to conveniently puncture patient's skin.
When being in dormant state, described catheter device 1000 can be by the user, for example nurse or other healthcare givers, be used for progressively inserting stream guiding tube according to following steps, conduit 201:(i for example) utilize needle point 304 to puncture patient's skin, then insert conduit 201 so that its opening is arranged in the body cavity of wishing arrival, such as vein inside.(ii) utilize means well known in the art, for example by medical adhesive tape or similar means conductor housing 200 is fixed on the patient skin.(iii) disconnect device 301; then extract hollow pinhead 303 out by catching and pull back needle unit 300; until described needle tip guard 100 is disconnected, the elastic arm 103 protection needle points 304 of needle tip guard 100 are so that it can not accidental puncture skin.
Referring to Fig. 2,3 and 4, the below is described in detail the various situations that occur when (iii) extracting hollow pinhead 303 out according to above-mentioned steps:
When hollow pinhead 303 has been drawn to expansion area 305 and has arrived position with the contact point of elastic arm 103, the latter may be crooked a little so that the former extract out under the pulling force easily by (Fig. 2) increasing slightly.If expansion area 305 is a kind of specific types and is positioned at elastic arm is not contacted with any zone with effective diameter of increase, described mechanical arm needn't slightly be done bending.The example of this kind expansion area 305 comprises outstanding salient point, and such as butt weld, it is at the contact point of hollow pinhead 303 facing to mechanical arm 103.Other of expansion area 305 may example comprise obstruction or any other outstanding distortion well known in the art.
Along with further extraction hollow pinhead 303 arrives needle point 304 by the position of the contact point of elastic arm 103, cause the latter to attempt to return back to its natural resting position, the place ahead (Fig. 3) that is positioned at needle point 304 in a part or its extension of the described elastic arm 103 in this position.Under the resting position of elastic arm 103, no matter around the angle of its axial-rotation how hollow pinhead 303, needle point 304 will point to a point on elastic arm 103 surfaces all the time on the length direction of hollow pinhead 303, this is between the turning 104 and fixing point 105 of elastic arm 103.Thereby needle point 103 thereby vised by elastic arm 103 and protect.
When being drawn to backward when crossing this, hollow pinhead 303 can not be released forward when not stopped by elastic arm 103 or its extension again.Therefore, if user attempts to release forward hollow pinhead 303, needle point 304 can thrust elastic arm 103 gently.Preferably elastic arm 103 is configured such that to thrust and results from turning 104(Fig. 4).
When further extracting hollow pinhead 303 out, until described expansion area 305 arrives the position in hole 102, cause hollow pinhead and needle tip guard 100 to act on mutually, namely be stuck in (Fig. 3) in the needle tip guard 100.The further increase of the pulling force of pulling hollow pinhead 303 disconnects needle tip guard 100 and conductor housing 200.Hollow pinhead 303 thereby and described needle tip guard 100 break away from conductor housing 200 together, this needle tip guard 100 effectively vises needle point 304 and prevents that the user accident from contacting with it.Make needle tip guard 100 and conductor housing 200 disconnect needed pulling force and in factors, depend on angle with imaginary line L1 and imaginary line L2, imaginary line L1 is identical with the extended line at hollow pinhead 303 and 102 centers, hole, imaginary line L2 be with the L1 same level in the straight line that extends, with coincide with contacted 2 of conductor housing 200 inner surfacies needle tip guard 100 is lip-deep, described point is positioned at the outside (Fig. 3) on the surface of projection 101.Preferably this angle is as follows: described needle tip guard 100 does not disconnect with conductor housing when hollow pinhead 303 is drawn out of, until expansion area 305 arrives hole 102.Yet preferably, needle tip guard 100 easily disconnects under the effect of pulling backward rapidly such as slight when expansion area 305 arrives hole 102.After hollow pinhead 303 and needle tip guard 100 break away from from conductor housing 200, perhaps when needle tip guard 100 is fixed on conductor housing 200 inside and needle point 304 and is vised by elastic arm 103 or its extension, hollow pinhead 303 can be released forward, and 102 forefront edge moves forward distance D 1 so that the rear end of expansion area 305 is from the hole, in this course needle point 304 can be at the surface sliding of elastic arm 103 until itself and turning 104 coincide (Fig. 4).
Connecting device 301 and 302 can be selected in various connection types independently, allowing user that needle unit 300 is connected with conductor housing 200 or to disconnect, and needle unit 300 is connected with external device (ED) or disconnects.The example of these connection types comprises Luer-Lok
Luer-Slip
And various types of snap socket well known in the art or similar structures.Preferably, connecting device 301 and 302, particularly connecting device 302 is bubble-tight, so that gas or liquid can not pass through such as blood or other body fluid.
Referring to Fig. 4, according to a specific embodiment, select expansion area 305 in the position of hollow pinhead 303, in order to being minimized, D1 still make elastic arm 103 or its extension Pliers when extracting hollow pinhead 303 out live needle point 304 simultaneously.
According to a specific embodiment, conductor housing 200 can have additional device well known in the art or similar structures makes things convenient for its replacing and optimizes its use.For example, it can have valve, pad, clamp device, the device that the blood in the drying syringe needle is residual, etc.
Referring to Fig. 5, according to a specific embodiment of the present invention, needle tip guard 100 comprises a main body, main body has the back side 106, front 107, connects the outer surface 108 of the described back side 106 and positive 107, be preferably and circular 106 extend to positive 107 hole 102 from the back side, and the elastic arm 103 that extends from the front 107 of main body.The back side 106 and positive 107 is flat basically, and basically parallel to each other.Hole 102 is substantially perpendicular to the plane at the back side 106 and extend on positive 107 plane.Hole 102 preferably is located substantially on the center of the back side 106 and positive 107.Imaginary straight line L2 with coincide with the some P1 at edge, outer surface 108 boundary overleaf, and with positive 107 and edge, outer surface 108 boundary on the nearest some P2 of range points P1 coincide.Between any a pair of some P2 and P2, the part of line L2 preferably extends to P2 with outer surface 108 overlaps from P1 basically.Passing in the longitudinal direction the imaginary line L1 that extends at 102 centers, hole preferably coincides with the plane of free-throw line L2 basically.When elastic arm is in its naturalness, any parallel with L1 and pass the imaginary line that extends in the longitudinal direction in hole 102 all and fixing point 105(Fig. 5 of elastic arm 103 not shown) and turning 104 between more lip-deep coinciding.Fixing point 105 is that elastic arm 103 is near the border of the transition between hole 102 1 sides and positive 107.Turning 104 be when elastic arm 103 in the raw the time elastic arm 103 towards a sharp turn on positive 107 planes.Therefore, elastic arm 103 has shape, and wherein the horizontal line of L is corresponding to the back of the body hook extension 110 of elastic arm 103.Compare with related device of the prior art, the advantage that has according to the shape of needle tip guard 100 of the present invention is that it will play protective action when itself and conductor housing 200 disconnect.Thereby it provides good protection to being removed along with hollow pinhead 303 from conductor housing 200 inner blood or the body fluid drops that outwards flow out.
Preferably, elastic arm 103 has accurate dimension, and is fixed on positive 107 ad-hoc location, so that regardless of the position of hollow pinhead 303, it or described back of the body hook extension 110 contact with the inner surface of conductor housing 200 never.This contact will hinder the predetermined fixed position of needle tip guard in conductor housing 200 potentially.
Preferably; elastic arm 103 is forced to leave under its naturalness with being maximized; when needle point 304 by pincers at the turning 104 when also namely being protected, the zone of back of the body hook extension 110 has intactly hidden the sensing zone in hole 102 (rotation of depending on hollow pinhead 303 makes needle point 304 obtain different angles).In the situation that elastic arm 103 is in for example side externally applied forces effect and bending, the risk minimization that this is not hidden needle point 304.When jointly being used corresponding to the arm of elastic arm 103 or Hubei Province sheet more than one, because their in this respect each other payments can not reach this set.
According to a specific embodiment, described needle tip guard 100 is circular, and namely to look up be a circle back side 106 and positive 107 sides along hollow pinhead 303.
According to a specific embodiment, described needle tip guard 100 is oval, and namely to look up be an ellipse back side 106 and positive 107 sides along hollow pinhead 303.
According to a specific embodiment, described hole 102 is positioned at the center of the back side 106 and positive 107.
According to a specific embodiment, the described back side 106 has the diameter of 3 to 6mm scopes, is preferably 3.9 to 4.3mm, more preferably is 4.1 to 4.15mm.
According to a specific embodiment, the described back side 106 has tapered protrusion 109, and hole 102 extends through this tapered protrusion 109.The effective length in hole 102 thereby increase, this for example, has produced better protection and needn't increase by increasing distance between P1 and the P2 area of outer surface 108 hollow pinhead 303.And this tapered protrusion can also have structure well known in the art, and for example annular scraping is used for scraping off the residues such as blood wherein when hollow pinhead 303 is drawn out of.
According to a specific embodiment, the internal diameter in hole 102 can equal or be a bit larger tham the external diameter of the shank of hollow pinhead 303, slides and guide effect to provide between shank and needle tip guard 100.Shank contact wire in the known metal pliers, the inner surface in hole 102 plays the effect of shank contact area, is used for contacting with the shank outer surface of hollow pinhead 303, namely plays and slides and guide effect.In order to obtain this contact area, the simultaneous minimization product material is small product size, described contact area can be arranged in whole or in part the inboard of tapered protrusion 109.It all is contact surface that described shank contact area there is no need at whole contact area, as long as described contact area can prevent from fact being in the locational shank that passes needle tip guard and wave or rock so that needle point has broken away from the central shaft in hole 102.Preferably, described contact area is set to reach with the maximum contact of shank and does not hinder hollow pinhead 303 to pass the slip of needle tip guard 100.Described shank contact area can be in the needle tip guard 100 around and the zone of contact shank, the i.e. hole 102 passed of hollow pinhead 303.The inner surface in described hole 102, namely described shank contact area can be smooth, coarse or have and the contacted suitable shape of shank.Usually, described shank contact area extends longlyer in the direction of hollow pinhead 303, prevents that the effect that hollow pinhead 303 waves or rock is better.The extension of shank contact area, namely the extension on 102 length directions of hole preferably should prolong as much as possible, but may not counteract any other predetermined function of needle tip guard.For example, the corresponding increase that preferably can not extend to the contact area that makes conductor housing inside of described shank contact area causes needle tip guard 100 from the extraction of the conductor housing inside unacceptably degree of difficulty that becomes.In this case, preferably increase as an alternative the extension of tapered protrusion 109.Tapered protrusion 109 can not extend to the degree that the predetermined function of elastic arm 103 may be hindered when it is positioned at the front.The length of shank contact area can be that for example 1mm is to 10mm.Preferably, the relation between the external diameter of hollow pinhead 303 shanks and the internal diameter in hole 102 is as follows: easily slide herein when hollow pinhead 303 is drawn out of or is pushed into, and the poor minimum between internal diameter and external diameter is in order to have minimum opening.This minimum poor, namely opening provides abundant and optimum guiding to hollow pinhead 303, thereby along with hollow pinhead 303 is pushed into or extracts out, prevents the undesirable movement on the direction perpendicular to hole 102 length directions of hollow pinhead 303 and needle point 304.
According to a specific embodiment, positive 107 can have tapered protrusion 109(Fig. 7).When needle tip guard was arranged on the shank, tapered protrusion 109 was extended forward towards needle point.Disclosed as Fig. 1, also described tapered protrusion can be arranged on the back side 106.Be arranged so that such as position and direction etc. the predetermined function of elastic arm 103 is not subject to possible obstruction between elastic arm 103 and the tapered protrusion.Therefore, the natural place of elastic arm 103 is as follows: regardless of the angle of hollow pinhead 303 around its length axle rotation, on the length direction of the hollow pinhead 303 that is positioned at hole 102, needle point 304 will point to the more lip-deep of elastic arm 103 all the time, and this is between the turning 104 and fixing point 105 of elastic arm 103.When tapered protrusion 109 was positioned at positive 107, the back side 106 preferably was the plane basically.This is pressed into conductor housing so that needle tip guard 100 is easily mounted in the conductor housing 200 by using basically the contacted instrument in whole surface with the back side 106.
In a specific embodiment, the described back side 106 has groove.The opening in described hole 102 is positioned at the bottom of described groove.And described groove preferably has the surface of inclination, thereby forms a conical socket.This type of groove that is positioned at the described back side 106 can guide described syringe needle to pass described hole 102 when being installed in needle tip guard on the syringe needle.
According to a specific embodiment, described needle tip guard 100 has the above-mentioned projection 101 that is positioned at outer surface 108.When needle tip guard 100 is positioned at conductor housing, described projection 101 will produce mint-mark in the material around of conductor housing 200.Machinery between projection 101 and the conductor housing 200 cooperates, and the former corresponding mint-mark of producing, will reduce needle tip guard 100 from the conductor housing 200 unexpected risks that disconnect.
According to a specific embodiment, projection 101 is the circular projections of extending along the continuous circular shape around outer surface 108.
According to a specific embodiment, projection 101 is the circular projections of extending along the continuous circular shape around outer surface 108, and is positioned at the plane perpendicular to L1.
According to another specific embodiment, projection 101 is one or more projections, described projection is selected from comprising that point, straight line prolong the group of any shape that can produce mint-mark in object well known in the art of shape, curve extending shape, V font and other independently, in order to prevent relatively moving of relative mint-mark, just as the shape of the surface of tyre that is best suited for the hag face.
According to a specific embodiment, projection 101 can be made greater than the material of the inner surface hardness of conductor housing 200 with hardness, in order to effectively form mint-mark the latter.Preferably, the material that projection 101 usefulness are identical with the remainder of needle tip guard 100 is made, in order to conveniently and economically make this device.
According to a specific embodiment, select type, multiformity and the direction of projection 101 so that the accident of needle tip guard 100 and conductor housing 200 disconnects can not occured, the disconnection of being scheduled to when being drawn out of, hollow pinhead 303 conveniently occurs simultaneously.For example, described projection 101 can be the circular projection of extending along the continuous circular shape around outer surface 108, has the height in 0.05 to the 0.3mm scope from outer surface.
According to a specific embodiment, projection 101 can be a plurality of projections (Fig. 7) on the outer surface 108.These projections arise from or extend towards positive 107 near the turning between the back side 106 and the outer surface 108 and in the plane that is basically perpendicular to the back side 106 and/or plane, positive 107 place.Preferably, they launch along the bearing of trend of outer surface 108.They are that the back side 106 and positive 107 is along 10% to 95% of the spacing of outer surface 108 along the development length of outer surface 108.Preferably, the end near front 107 comprises level and smooth slope so that the convenient conductor housing 200 that inserts.A plurality of projections on outer surface 108 have the height in 0.01 to the 0.3mm scope, are preferably 0.03 to 0.1mm, more preferably are 0.04 to 0.06mm.A plurality of projections on outer surface 108 can comprise 1 to 20 independently projection, and preferably 2 to 12, they have identical or different length and/or height.Preferably, they have identical length and height.
According to a specific embodiment, the inclination angle of the outer surface 108 of needle tip guard 100, namely the angle of straight line L1 and L2 from 0 the degree to 10 the degree scopes in, preferably from 4 the degree to 8 the degree scopes in, more preferably be 6 the degree.Preferably, the inclination angle of outer surface 108 is basically identical with the inclination angle of conductor housing 200, and described needle tip guard 100 is installed in this conductor housing 200 when catheter device 1000 is in dormant state.This makes the contact surface maximization of the inner surface of outer surface 108 and conductor housing 200, thereby prevents needle tip guard 100 unexpected disconnection on conductor housing 200.
According to a specific embodiment, the inclination angle of the outer surface 108 of needle tip guard 100, namely the angle between straight line L1 and the L2 is identical with the angle that uses in the known or standardized detachable conical structure, the structure that for example is used for syringe is such as the taper of Lu's dust (Luer taper).
According to a specific embodiment, needle tip guard 100 is made by plastic material.Preferably, described plastic material has suitable toughness according to its predetermined purpose, flintiness, fatigue resistance, elasticity and the anti-gradually combination of capable deformation.Those skilled in the art are easy to select suitable plastic material.Those skilled in the art can also launch standardization test in order to determine the scope of plastic material, thereby select suitable plastic material on the result's of above-mentioned test basis.Suitable plastic material has gradually capable deformation behavior of high resistance, and namely its slow probability mobile or permanent deformation under the impact that applies external force is low.Therefore, catheter device, the catheter device 1000 that comprises as described in the present invention the needle tip guard 100 with projection 101, can under the assembling dormant state, store long time and not make projection 101 produce larger gradually capable property deformation, otherwise this deformation meeting is easier to from conductor housing 200 unexpected disconnections needle protection device 100.And suitable plastic material has suitable elasticity and high three-dimensional Memorability, even so that elastic arm 103 still remains on after prolonged storage its naturalness and vises needle point 304, elastic arm 103 is forced to break away from this state under store status.In addition, preferably, the toughness of plastic material should make needle point 304 can thrust slightly this material, but can not penetrate.Needle tip guard 100 can be made with the moulded plastic material.Because the special construction of the different piece of the described needle tip guard 100 of the specific embodiment of the invention, described needle tip guard 100 can be by molding, for example injection molding is piece and/or an integral unit of a homogeneity, and need to not splice between its different piece.Therefore, advantageously, adopt any suitable molding process well known in the art to make, for example injection molding, whole necessary parts of needle tip guard 100 of the present invention are one-body molded, no longer need different individual components are carried out the assembling of consuming cost and time.
With compare such as materials such as metals, an advantage that adopts plastic material to make needle tip guard 100 is to provide larger degree of freedom for this distortion of installing each details.For example, plastics needle tip guard 100 according to the present invention is compared more easily molding of corresponding metal objects.Another advantage be included as to plastics needle tip guard 100 of the present invention carry out coloud coding provide may, for example encode according to needle sizes.Another advantage of plastics needle tip guard 100 of the present invention is the turning 104 that needle point 304 can thrust elastic arm 103 slightly.The passive ＂ protection of ＂ compared to existing technology, this has represented a kind of ＂ initiatively ＂ and safe protection principle, and wherein elastic arm 103 further is locked on the needle point 304, thereby has additionally limited it and moved the disengaging home.Another advantage of plastics needle tip guard 100 of the present invention is that metal needle passes hole 102 and can not produce metal needle when elastic arm 103 slides on metal pliers or passes scratch vibrations and the uncomfortable sound that produces when metal pliers slides.Another advantage of plastics needle tip guard 100 of the present invention is for example to be compared to metallographic phase that corrosion and the reaction of chemical substance have higher chemical inertness and/or resistance, and chemical substance is from being comprised of conductor housing and comprising the plastic wraps of silicon pad or similar structures and leaking.Needle protection device 100 of the present invention, just as another advantage of plastic spike preventer 100 is that it can molding and be made as a functional device, namely it needn't be assembled more than one independent object by combination as other related device of the prior art.Therefore, reduced production cost.Another advantage of plastics needle tip guard of the present invention is to compare metal, when needle tip guard 100 or related device are removed from the plastic catheter head along with the extraction of syringe needle, discharge as the probability of small plastic sheet is significantly reduced by scratching with the plastic catheter head.Correspondingly, the probability that forms scratch also significantly reduces, and described scratch may cause producing leakage by affected adapter.
According to a specific embodiment, described needle tip guard 100 is made by thermoplastic polymer, and thermoplastic polymer comprises crystallization and noncrystalline graded area.
According to a specific embodiment, needle tip guard 100 usefulness are from comprising POM, PBTP, and LCP, PA, PSU, PEI, the plastic material of selecting in the group of PC and PPO/SB is made.According to a specific embodiment, needle tip guard 100 usefulness are from comprising styrenic block polymers, polyolefin blend, elastic alloy, thermoplastic polyurethane, the thermoplastic elastomer (TPE) of selecting in the group of thermoplastic polyester and polyamide thermoplastic making.
According to a specific embodiment, needle tip guard 100 usefulness are from comprising Styroflex
Geolast
Sarlink
Forprene
Alcryn
And Evoprene
Group in the plastic material selected make.
According to a specific embodiment, described needle tip guard 100 usefulness are from comprising medical grade liquid crystal polymer, for example Vectra
LCP, the plastic material of selecting in the group of polyethylene and ultra-high molecular weight polyethylene is made.
According to a specific embodiment, the poly-sulphur of described needle tip guard 100 usefulness or polyformaldehyde are made.
According to a specific embodiment, the angle of 104 inside, turning 60 the degree to 110 the degree scopes in, preferably, 80 the degree to 100 the degree, more preferably, 85 the degree to 95 the degree, and most preferably 90 the degree.
According to a specific embodiment, the length of back of the body hook extension 110 104 is being measured to the extending direction at outstanding position from the turning, is 0.5 times of diameter in hole 102 at least, for example 0.5 of the diameter in hole 102 times to 6 times.Preferably, when needle tip guard 100 is installed in conductor housing 200 when interior, any position of elastic arm 103 does not contact with the inner surface of conductor housing 200 on the optional position of hollow pinhead 303.
According to a specific embodiment, described back of the body hook extension 110 can comprise a groove with part circular shape, and ground known in this field provides and construct this groove so that guiding and allow hollow pinhead 303 therefrom to slide when extracting out.
According to a specific embodiment, elastic arm 103 is constructed to be forced when breaking away from its naturalness by hollow pinhead 303 when it, begins to measure from fixing point 105, and its most outstanding part is in 0.3 to 3 times of scope of positive 107 diameter.
According to a specific embodiment, the width of elastic arm 103 and position so that on the optional position of hollow pinhead 303 any part of elastic arm 103 or back of the body hook extension 110 do not contact with the inner surface of conductor housing 200.
According to a specific embodiment, the width of elastic arm 103 and is selected as that it can not expose needle point 304 by lateral bending under normal environment in 0.2 to 0.9 times scope of positive 107 diameter.
According to a specific embodiment, the thickness of elastic arm 103 and material are selected as that user can not pierce through elastic arm 103 with hollow pinhead 303 under home.
Referring to Fig. 6, according to a specific embodiment, elastic arm 103 has an anti-back towing extension 111, and it is 0 and spends to the direction of miter angle degree and extend opposite with back of the body hook extension 110.Preferably, needle tip guard 100 is when it has anti-back towing extension 111, be installed in the zone 203 of conductor housing 200, at this inclined position angle, namely the angle between straight line L1 and the L2 is almost 0 degree, and outer surface 108 has identical inclination angle.Outer surface 108 has projection 101, but at little angle of inclination for example 0 when spending not necessarily.For example 0 when spending, needle tip guard integrally remains on the position of conductor housing 200 by the frictional force between the inner surface of outer surface 108 and conductor housing 200 at little angle of inclination.Further, make the material of needle tip guard 100 and can from a greater variety of materials, be selected, because compare with the situation that has projection 101, no longer need to produce mint-mark in the conductor housing 200.Preferably, conductor housing 200 at the inclination angle in followed zone namely corresponding to the angle between L1 and the L3 on the direction of the rear end of hollow pinhead 303 greater than 0 degree, for example 6 spend, so that needle protection device 100 is easy to remove from conductor housing 200 when needed.Conductor housing 200 has ring duct head protuberance 202, and the inner surface around conductor housing 200 between the position between needle tip guard 100 and the anti-back towing extension 111 extends.When hollow pinhead 303 was positioned at the place ahead, anti-back towing extension 111 was forced to such as upper/lower positions: the outermost that anti-back towing extension extends overlaps with the point of the imaginary line L5 that is parallel to L1.Point on L5 and the conductor housing protuberance 202 overlaps.Under this state, because acting on, anti-back towing extension 111 namely is stuck in conductor housing protuberance 202, prevent backward accidental movement of needle tip guard 100.When needle point 304 is extracted to the point that it is vised by described back of the body hook extension 110 and/or elastic arm 103, L5 not with conductor housing protuberance 202 on any point coincide, therefore, needle tip guard 100 can remove from conductor housing 200.Anti-back towing extension 111 and conductor housing protuberance 202 have the function of security system, prevent that needle tip guard 100 from deviating from from conductor housing 200 during with the unexpected disconnection of inwall of conductor housing 200 at it.
Referring to Fig. 7, according to a specific embodiment, positive 107 arms 112 that have on the length direction are used for providing additional protective shield to needle point 304 or hollow pinhead 303.The advantage of the arm 112 on the described length direction comprises, for example, has further reduced after conductor housing 200 and needle tip guard 100 disconnect, and with the most advanced and sophisticated unexpected risk that contacts of for example hollow pinhead 303, this tip may be infected with by for example blood.Arm 112 on the described length direction preferably is arranged on described positive 107 makes it face elastic arm 103.Ground known in this field, the shape of the arm 112 on the length direction are constructed to the exposed region that its place ahead positive 107 shields the needle point of hollow pinhead 303 substantially.For example, it can be box-like, and wider side is in the face of hollow pinhead 303.Arm 112 on the described length direction can be rigidity or elastic.It is preferably elastic, in order to needle tip guard 100 can be made easily by for example being molded on the block of material.Arm 112 on the length direction preferably contacts with elastic arm 103 never in order to be not that the needle point guard function may cause impairment to the latter's predetermined function.Arm 112 on the length direction can with or do not contact with the inside of conductor housing 200 or the needle point of hollow pinhead 303.Yet preferably, it does not contact with in the two any one.
In claims, term ＂ comprises/comprises that ＂ does not get rid of element or the step that has other.And, although listed respectively, various means, element or method step can for example used in an independent unit or the process equipment.And although independent feature can be contained in the different claim, they may advantageously be grouped together, and to be comprised in the combination that does not represent these features in the different claim be infeasible and/or harmful.And a Reference numeral is not got rid of and is had a plurality of structures.Term ＂ one ＂, ＂ of ＂, ＂ the one ＂, ＂ the 2nd ＂ etc. does not get rid of a plurality of yet.Reference numeral in the claim is only as the example of clearness, and should be as any restriction to the claim protection domain.
Claims (16)
1. a plastics needle tip guard (100) comprising:
Main body, described main body have the back side (106), front (107), connect the outer surface (108) of the described back side (106) and described front (107), extend to the hole (102) of described front (107) from the described back side (106); And
The elastic arm (103) that extends from described front (107) the self-retaining point (105) of described main body;
Wherein said elastic arm (103) has naturalness, certainly this state its can be forced to be bent to and allow to pass freely through described hole (102) along axis of the body; Described elastic arm (103) is under naturalness, when hollow pinhead (303) along when the described back side (106) to the direction in described front (107) is passed described hole (102) and extend forward, this elastic arm (103) vises the needle point (304) of hollow pinhead (303);
Wherein when described elastic arm (103) when being in described naturalness, the imaginary line that extend along its length in any described hole (102) of passing axis of the body all coincides with described elastic arm (103); And
The wherein said back side (106) comprises the groove with the face that inclines, and has the opening of described hole (102) in this groove.
2. needle tip guard according to claim 1 (100), wherein said main body is constructed to circle, the taper or cylindrical of cutting sth. askew.
3. according to the described needle tip guard of any one in the claims (100), wherein said elastic arm (103) comprises back of the body hook extension (110), with the described elastic arm (103) of described back of the body hook extension (110) thereby have shape, wherein be under the described naturalness when described elastic arm (103), any imaginary straight line all and the surperficial point of the described elastic arm (103) between fixing point (105) described in the L shaped described elastic arm (103) and the inside corner (104) coincide; And
Wherein when described elastic arm (103) and described back of the body hook extension (110) vise described needle point (304) jointly, any imaginary straight line all and described back of the body hook extension (110) or and described fixing point (105) and described turning (104) between surface point coincide.
4. needle tip guard according to claim 3 (100), wherein in use, described elastic arm (103) has maximum external contact point, and described contact point is the contacted contact point of any part with described hollow pinhead (303).
5. needle tip guard according to claim 1 and 2 (100), the internal diameter in wherein said hole (102) is equal to or slightly greater than the external diameter of hollow pinhead (303) shank, slides and guide effect in order to provide between described shank and described needle tip guard (100).
6. needle tip guard according to claim 1 (100), wherein said needle tip guard (100) comprise be shaped as circle, cut sth. askew taper or columniform main body, main body has the described back side (106), described front (107), connects the outer surface (108) of the described back side (106) and described front (107), extend to the hole (102) of described front (107) from the described back side (106), and the described elastic arm (103) that extends from described fixing point (105) from the described front (107) of described main body;
Wherein said elastic arm (103) has naturalness, certainly this state its can be forced to be bent to and allow to pass freely through described hole (102) along axis of the body; Described elastic arm (103) with described back of the body hook extension (110) has shape, is used for vising the needle point (304) of hollow pinhead (303) at hollow pinhead (303) when the direction from the described back side (106) to described front (107) extends through described hole (102); When described elastic arm (103) in the raw the time, arbitrarily along the imaginary straight line that axially passes described hole (102) and extend along its length of described main body all and the surperficial point of the elastic arm (103) between fixing point (105) described in the L shaped described elastic arm (103) and the inside corner (104) coincide;
Wherein when described elastic arm (103) and described back of the body hook extension (110) vise described needle point (304) jointly, any above-mentioned imaginary line all coincides with the point of carrying on the back hook extension (110) surface, perhaps and the surface point between described fixing point (105) and described turning (104) coincide, and wherein elastic arm (103) or described back of the body hook extension (110) have maximum external contact point in use, and described contact point is the contacted contact point of any part with hollow pinhead (303).
7. according to claim 1, the described needle tip guard of any one (100) in 2,4 or 6, wherein said needle tip guard (100) can be made of the moulded plastic material.
8. according to claim 1, the described needle tip guard of any one (100) in 2,4 or 6, wherein said outer surface (108) has at least one projection (101).
9. according to claim 1, the described needle tip guard of any one (100) in 2,4 or 6, the wherein said back side (106) have tapered protrusion (109), described hole (102) are passed tapered protrusion and are extended.
10. according to claim 1, the described needle tip guard of any one (100) in 2,4 or 6, the wherein said back side (106) greater than described front (107) so that described outer surface (108) forms the oblique angle of 0 degree in the 10 degree scopes.
11. needle tip guard according to claim 3 (100), the length of wherein said back of the body hook extension (110) is measured to the most outstanding part from described turning (104), is 0.5 to 6 times of described hole (102) diameter.
12. needle tip guard according to claim 3 (100), wherein said turning (104) inboard angle is spent in the scopes of 110 degree 60.
13. according to claim 1, the described needle tip guard of any one (100) in 2,4,6,11 or 12, wherein said main body is oval-shaped.
14. according to claim 1, the described needle tip guard of any one (100) in 2,4,6,11 or 12, the described elastic arm (103) of wherein said needle tip guard (100) has anti-back towing extension (111), be used at described needle tip guard (100) when being installed in catheter device, prevent described needle tip guard (100) accidental movement on from described front (108) to the direction of the described back side (106).
15. according to claim 1, the described needle tip guard of any one (100) in 2,4,6,11 or 12; wherein said front (107) has the arm (112) on the length direction, and being used for provides additionally protective shield to described needle point (304) or described hollow pinhead (303).
A 16. catheter device (1000), comprise according in the claim 1,2,4,6, the described needle tip guards of 11 or 12 any one (100), conductor housing (200) and needle unit (300), wherein said needle unit (300) has be used to the connecting device that is connected to described conductor housing (200) (301), and the connecting device (302) that is used for being connected to external device (ED), and be fixed on the rear end of hollow pinhead (303), and wherein when described needle unit (300) was connected to described conductor housing (200) by described connecting device (301), described conductor housing (200) was connected to the conduit (201) that extends on the length direction identical with described hollow pinhead (303).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1150098-0 | 2011-02-09 | ||
| SE1150098 | 2011-02-09 |
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| Publication Number | Publication Date |
|---|---|
| CN202699833U true CN202699833U (en) | 2013-01-30 |
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ID=47580181
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220042366 Ceased CN202699833U (en) | 2011-02-09 | 2012-02-09 | Needle tip protection device and catheter device |
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| Country | Link |
|---|---|
| CN (1) | CN202699833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106456934A (en) * | 2014-04-28 | 2017-02-22 | 威格米德公司 | Catheter instrument and catheter hub therefore |
-
2012
- 2012-02-09 CN CN 201220042366 patent/CN202699833U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106456934A (en) * | 2014-04-28 | 2017-02-22 | 威格米德公司 | Catheter instrument and catheter hub therefore |
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