CN217040943U

CN217040943U - Environment-friendly disposable dead-angle-free anti-puncture remaining needle

Info

Publication number: CN217040943U
Application number: CN202122977570.4U
Authority: CN
Inventors: 何敏; 段琼艳; 杨德桂; 陈秀云
Original assignee: Peking University Shenzhen Hospital
Current assignee: Peking University Shenzhen Hospital
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-07-26
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a needle of keeping somewhere that stabbing is prevented at disposable no dead angle of environment-friendly. Comprises an indwelling catheter and a puncture component; the indwelling catheter comprises a needle tube and an indwelling needle sleeve, wherein one end of the indwelling needle sleeve is provided with a puncture needle core inserting opening and an infusion introducing opening; puncture assembly includes puncture needle head and protection piece, be provided with first via hole on the protection piece, the peripheral outside extension of protection piece is formed with four at least mutual oppositions's claw, wherein three claw all exists the power of holding that adds that draws close to the center, the end of another claw is provided with the extension end, the extension end is provided with the second via hole just right mutually with first via hole, the outer wall of puncture needle head is pushed up to the pore wall of second via hole, the tip department of puncture needle head is provided with the slot that is used for taking out the time and forms solid structure of card with the claw. This embodiment can effectually play cladding formula protection through the protector piece, avoids the puncture syringe needle to bring secondary cross infection.

Description

Environment-friendly disposable dead-angle-free anti-puncture remaining needle

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to an environment-friendly disposable dead angle-free puncture-proof indwelling needle.

Background

As is well known, an indwelling needle is an auxiliary infusion device to replace a conventional disposable infusion needle, and is now widely used clinically to reduce pain caused by repeated puncturing of a patient and to reduce the nursing workload of medical staff. In general, an indwelling catheter and a puncture assembly provided in the indwelling catheter have an integrated structure, and when the indwelling catheter is used, the puncture needle of the puncture assembly guides the indwelling catheter to pierce into a vein, and then the puncture assembly is pulled out, and the indwelling catheter continuously infuses a medical solution into a patient.

However, since the puncture assemblies are sequentially used, in order to avoid secondary cross infection caused by the fact that the needle punctures a person in the process of garbage disposal or recycling, a safety protective sleeve is attached to the existing intravenous infusion indwelling needle, namely, the needle of the used puncture assembly is sheathed and coated directly by using soft glue or a cavity with a gap. Although this kind of safety protection cover can play and avoid the follow-up other people that stabs of syringe needle, when syringe needle and safety protection cover carried out the opposite dress, also can bring the risk of stabbing to medical personnel's work load has further been increased and medical personnel is hindered by mistake when withdrawing from the puncture subassembly, injures staff by mistake when retrieving medical rubbish, because of the injures leads to disease propagation and medical expenses to rise by mistake, it is convenient inadequately to wholly utilize, the step increase and the accidental injury risk increase of medical waste recycling into the raw materials again.

SUMMERY OF THE UTILITY MODEL

To the deficiencies existing in the prior art, the utility model aims to provide an environment-friendly disposable dead-angle-free puncture-proof indwelling needle convenient to use.

In order to realize the purpose, the utility model adopts the following technical scheme:

an environment-friendly disposable dead-angle-free anti-puncture indwelling needle comprises an indwelling catheter and a puncture assembly;

the indwelling catheter comprises a needle tube and an indwelling needle sleeve, the needle tube and the indwelling needle sleeve are connected into a whole and are communicated with each other, one end of the indwelling needle sleeve is provided with a puncture needle core insertion opening and a transfusion introduction opening, the inner diameter of the puncture needle core insertion opening is consistent with the pipe diameters of a heparin cap and a transfusion pipe, the connection with the heparin cap or the transfusion pipe is mainly met clinically, and the puncture needle core insertion opening and the needle tube are in the same horizontal direction;

the puncture component comprises a puncture needle head and a protection piece, wherein the protection piece is positioned at the joint of the needle tube and the indwelling needle sleeve, a first through hole is formed in the protection piece, at least four opposite claw parts are formed by extending the periphery of the protection piece outwards, clamping force approaching the center exists in all three claw parts, an extending end is arranged at the tail end of the other claw part, a second through hole opposite to the first through hole is arranged at the extending end, the first through hole and the second through hole are positioned in the same axial direction, the tip end of the puncture needle head sequentially penetrates through the second through hole and the first through hole and is arranged in the needle tube, the hole wall of the second through hole is pressed against the outer wall of the puncture needle head, the tail end of the claw part without the extending end is pressed against the side wall of the puncture needle head and forms a clamping effect on the puncture needle head, and a groove for forming a clamping structure with the claw part when the puncture needle head is drawn out is arranged at the tip end of the puncture needle head, the distance from the groove to the sharp end of the puncture needle head is less than or equal to the extending length of the claw part.

Preferably, the puncture needle is provided with a grip at one end far away from the tip, one part of the grip is arranged in the puncture needle core insertion opening, and the other part of the grip is arranged outside.

Preferably, a plurality of limiting blocks are arranged at one end of the holding part positioned in the puncture needle core insertion opening, and a limiting table surface is arranged at a corresponding position in the puncture needle core insertion opening.

Preferably, a limiting cavity is formed at the junction of the needle tube and the cannula of the indwelling needle, the limiting cavity is a polygonal rhombohedron, the shape of the protection piece is matched with the limiting cavity, the protection piece is limited through the limiting cavity, and the protection piece is prevented from rotating.

Preferably, the ends of the claw parts which are not provided with the extending ends are all inclined inwards to form the top contact ends, and the extending ends are positioned above the top contact ends.

Preferably, the top contact end is provided with an arc-shaped notch, and the opening diameter of the arc-shaped notch is matched with the diameter of the puncture needle head.

Preferably, the groove comprises a vertical section and a slope section which are communicated with each other, the vertical section is arranged close to the tip direction of the puncture needle head, and the slope section is arranged far away from the tip direction of the puncture needle head.

Preferably, the protection piece and the puncture needle head are made of the same material.

Since the technical scheme is used, the utility model discloses lay the protection piece in needle tubing and lieing in needle sleeve pipe border department, accomplish puncture work back at the puncture syringe needle, utilize claw on the protection piece to constitute the counterpoint lock solid to the slot to wrap up the tip portion of puncture syringe needle in the protection piece, and along with the puncture syringe needle is together released, after the puncture syringe needle is released, just form the protection that lasts to most advanced, avoid stabbing the other person, avoid secondary cross infection's risk.

Drawings

Fig. 1 is a schematic diagram of the structural principle of the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a protector according to an embodiment of the present invention.

Figure 3 is a side cross-sectional view of a protector according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of the puncture needle head according to the embodiment of the present invention.

Fig. 5 is an enlarged schematic view of a in fig. 4 according to an embodiment of the present invention.

Fig. 6 is another structure form of the invention.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in FIGS. 1 to 6, the environment-friendly disposable dead-angle-free anti-puncture indwelling needle provided by the present embodiment comprises an indwelling catheter 1 and a puncture assembly 2;

the indwelling catheter 1 comprises a needle tube 11 and an indwelling needle sleeve 12, the needle tube 11 and the indwelling needle sleeve 12 are connected into a whole and are communicated with each other, one end of the indwelling needle sleeve 12 is provided with a puncture needle core inserting opening 13 and a transfusion introducing opening 14, the inner diameter of the puncture needle core inserting opening 13 is consistent with the diameters of a heparin cap and a transfusion tube, and the puncture needle core inserting opening 13 and the needle tube 11 are in the same horizontal direction;

the puncture assembly 2 comprises a puncture needle head 21 and a protection piece 22, the protection piece 22 is located at the position where the needle tube 11 and the indwelling needle sleeve 12 are connected, a first through hole 23 is formed in the protection piece 22, at least four mutually opposite claw parts 24 are formed by outwards extending the periphery of the protection piece 22, the three claw parts 24 have holding force which is close to the center, an extending end 25 is arranged at the tail end of the other claw part 24, a second through hole 26 which is opposite to the first through hole 23 is formed in the extending end 25, the hole wall of the second through hole 26 is in contact with the outer wall of the puncture needle head 21, the tail end of the claw part 24 which is not provided with the extending end 25 is in contact with the side wall of the puncture needle head 21 to form a clamping effect on the puncture needle head 21, and a groove 27 which is used for forming a clamping structure with the claw parts 24 when the puncture needle head 21 is pulled out is formed in the tip part.

The protection member 22 is mainly installed in the indwelling catheter 1, the tip end of the puncture needle 21 sequentially penetrates through the second through hole 26 and the first through hole 23 and is placed in the needle tube 11, the puncture needle 21 is centrally positioned by using the first through hole 23 and the second through hole 26, the puncture needle 21 can move along the coaxial direction of the first through hole 23 and the second through hole 26, namely, the puncture needle is axially equal to the needle tube 11, and the tip end of the puncture needle 21 is ensured not to be contacted with the inner wall of the needle tube 11, so that the puncture work can be better completed.

After the puncture operation is completed, the puncture needle 21 needs to be pulled out, after the puncture needle 21 is pulled out gradually, the groove 27 moves to the protection member 22, and because the tail end of the claw part 24 without the extension end 25 is pressed against the side wall of the puncture needle 21 and forms a clamping effect on the puncture needle 21, when the groove 27 moves to the tail end of the claw part 24, the tail end of the claw part 24 is clamped in the groove 27 by means of the elastic tendency, so that the protection member 22 and the puncture needle 21 are assembled, and the distance from the groove 27 to the tip end of the puncture needle 21 is smaller than or equal to the extension length of the claw part 24, so that the protection member 22 can cover the tip end of the puncture needle 21, thereby achieving the final purpose, and in order to ensure the alignment and clamping of the groove 27 and the claw part 24, the claw parts 24 are at least four and distributed around equally, thereby achieving the multi-angle surrounding clamping of the puncture needle 21, the problem that the puncture needle 21 is rotated and the groove 27 and the claw 24 are clamped in a staggered manner when being withdrawn is avoided. Therefore, when the puncture needle 21 is withdrawn, the protection member 22 can cover the tip of the puncture needle 21, thereby preventing secondary cross infection.

Further, in order to facilitate the operator to grasp the puncture needle 21, the puncture needle 21 of the present embodiment is provided with a grasping portion 28 at an end away from the tip, and a part of the grasping portion 28 is disposed in the puncture needle core insertion port 13 and another part is disposed outside.

Further, the locking of the claw portion 24 and the groove 27 of the present embodiment mainly depends on the elastic force, and in order to better achieve the expected effect, the end of the claw portion 24, which is not provided with the extension end 25, is inclined inward to form the contact end 29, the extension end 25 is located above the contact end 29, the contact end 29 is provided with the arc-shaped notch 30, the opening diameter of the arc-shaped notch 30 is matched with the diameter of the puncture needle 21, the contact end 29 is used as the contact end, so that the redundant contact portion is reduced, the movement resistance of the puncture needle 21 is reduced, the user can control the locking, and the puncture needle 21 can be engaged better by the arc-shaped notch 30, so that the subsequent butt joint with the groove 27 is smoother.

Further, the groove 27 of the present embodiment includes a vertical section 271 and a slope section 272 which are communicated with each other, the vertical section 271 is disposed in a direction close to the tip of the puncture needle 21, and the slope section 272 is disposed in a direction away from the tip of the puncture needle 21, so that the design can satisfy the condition that the puncture needle 21 can be smoothly assembled into the indwelling catheter 1, the groove 27 does not form a hindrance when being assembled, and the groove 27 can also satisfy the condition that the groove is locked with the claw portion 24 when being withdrawn.

Further, for convenient whole recovery, so protection piece 22 is the same with puncture needle 21's material, and the preferred metal material that all adopts to when retrieving the letter sorting, need not to carry out dismantling of protection piece 22 again, directly can retrieve simultaneously, like this alright avoid the letter sorting person to take place the risk of stabbing.

In addition, the protector of this embodiment may also adopt another structure form, that is, only two mutually opposite claw portions 24 are selected, two claw portions 24 without the extending end 25 are removed, and a plurality of limiting pieces 100 are arranged on the side edge of the remaining claw portion 24, and the limiting pieces 100 are used as the original claw portions 24. The specific structure is shown in fig. 6.

Furthermore, in order to prevent the puncture needle 21 from being inserted too deeply, a plurality of limit blocks 101 are disposed at one end of the grip 28 disposed in the puncture needle core insertion hole 13, and a limit table 102 is disposed at a corresponding position in the puncture needle core insertion hole 13, so that when the puncture needle 21 is aligned and assembled, the insertion is continued through the stop table 102, and the tip of the puncture needle 21 is prevented from being inserted too deeply.

Furthermore, in order to avoid the unnecessary rotation of the protector during use, a limiting cavity 103 is formed at the junction between the needle tube 11 and the indwelling needle cannula 12 in the present embodiment, the limiting cavity 103 is a polygonal rhombus, the shape of the protector 22 is matched with the shape of the limiting cavity 103, and the protector 22 is limited by the limiting cavity 103 to prevent the rotation of the protector 22.

The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the present invention, or directly or indirectly applied to other related technical fields, are included in the same way in the patent protection scope of the present invention.

Claims

1. The utility model provides a needle of keeping somewhere that stabbing is prevented to disposable no dead angle of environment-friendly which characterized in that: comprises an indwelling catheter and a puncture component;

the indwelling catheter comprises a needle tube and an indwelling needle sleeve, the needle tube and the indwelling needle sleeve are connected into a whole and are communicated with each other, one end of the indwelling needle sleeve is provided with a puncture needle core inserting opening and an infusion introducing opening, and the puncture needle core inserting opening and the needle tube are in the same horizontal direction;

the puncture assembly comprises a puncture needle head and a protection piece, wherein the protection piece is positioned at the joint of the needle tube and the sleeve of the indwelling needle, a first through hole is formed in the protection piece, the periphery of the protection piece extends outwards to form at least four mutually opposite claws, the clamping force which is closed towards the center exists in all three claws, an extending end is arranged at the tail end of the other claw, a second through hole which is opposite to the first through hole is arranged at the extending end, the first through hole and the second through hole are positioned in the same axial direction, the tip end of the puncture needle head sequentially penetrates through the second through hole and the first through hole and is arranged in the needle tube, the hole wall of the second through hole is in contact with the outer wall of the puncture needle head, the tail end of the claw which is not provided with the extending end is in contact with the side wall of the puncture needle head and forms a clamping effect on the puncture needle head, and a groove which forms a clamping structure with the claw when the puncture needle head is drawn out is arranged at the tip end of the puncture needle head, the distance from the groove to the sharp end of the puncture needle head is less than or equal to the extending length of the claw part.

2. The environment-friendly disposable dead-angle-free anti-puncture indwelling needle according to claim 1, wherein: the puncture needle head is provided with a holding part at one end far away from the tip, one part of the holding part is arranged in the puncture needle core insertion opening, and the other part of the holding part is arranged outside.

3. The environment-friendly disposable dead-angle-free anti-puncture indwelling needle as claimed in claim 2, wherein: one end of the gripping part, which is positioned in the puncture needle core insert opening, is provided with a plurality of limiting blocks, and a limiting table top is arranged in the corresponding position in the puncture needle core insert opening.

4. The environment-friendly disposable dead-angle-free anti-puncture indwelling needle as claimed in claim 1, wherein: the protective piece is characterized in that a limiting cavity is formed at the junction of the needle tube and the sleeve of the remaining needle, the limiting cavity is a polygonal rhombus, the shape of the protective piece is matched with that of the limiting cavity, and the protective piece is limited through the limiting cavity to prevent the protective piece from rotating.

5. The environment-friendly disposable dead-angle-free anti-puncture indwelling needle as claimed in claim 1, wherein: the tail ends of the claw parts which are not provided with the extension ends are all inclined inwards to form top contact ends, and the extension ends are positioned above the top contact ends.

6. The environment-friendly disposable dead-angle-free anti-puncture indwelling needle as claimed in claim 5, wherein: the top contact end is provided with an arc-shaped notch, and the opening diameter of the arc-shaped notch is matched with the diameter of the puncture needle head.

7. The environment-friendly disposable dead-angle-free anti-puncture indwelling needle according to claim 1, wherein: the groove comprises a vertical tangent plane and a slope tangent plane which are mutually communicated, the vertical tangent plane is arranged in the direction close to the tip end of the puncture needle head, and the slope tangent plane is arranged in the direction far away from the tip end of the puncture needle head.

8. The environment-friendly disposable dead-angle-free anti-puncture indwelling needle according to claim 1, wherein: the protection piece is the same with the material of puncture needle head, and is medical stainless steel.