CN213374257U

CN213374257U - Safe arteriovenous fistula puncture needle with wings

Info

Publication number: CN213374257U
Application number: CN202021451203.XU
Authority: CN
Inventors: 柏保东; 柏玲; 董礼兵; 周玉艳; 董旭
Original assignee: Anhui Tiankang Medical Technology Co ltd
Current assignee: Anhui Tiankang Medical Technology Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-06-08
Anticipated expiration: 2030-07-21

Abstract

The utility model provides a safe area wing arteriovenous fistula pjncture needle, include: the puncture needle assembly comprises a puncture needle body and a fixing piece connected to the puncture needle body; the protective sheath is equipped with the slide in the protective sheath, and the one end of slide is equipped with the opening, is equipped with the locking piece in the slide, and in the pjncture needle body passed through opening income slide, the locking piece cooperateed with the mounting in order to lock pjncture needle body in the slide. The utility model discloses a pjncture needle: after the puncture needle is used, the puncture needle body is collected into the slide way from the opening of the protective sleeve, the puncture needle body is locked in the slide way by matching the locking piece and the fixing piece, and the arteriovenous fistula puncture needle can not be reused, so that the purpose of safe use is achieved. At the moment, the puncture needle body is completely accommodated in the protective sleeve, so that the damage of accidental needle stick injury caused by the fact that the needle point of the puncture needle body is exposed outside the slideway is avoided, and the safety of the puncture needle assembly after use is further ensured.

Description

Safe arteriovenous fistula puncture needle with wings

Technical Field

The utility model relates to a medical pjncture needle technical field, concretely relates to safe area wing arteriovenous fistula pjncture needle.

Background

Modern medical use of puncture needles has evolved from intravenous infusion needles and injection needles. The arteriovenous fistula puncture needle can be used for blood sampling by a machine, is mainly used for an extracorporeal circulation circuit matched with a blood purification device to establish a blood vessel passage in hemodialysis treatment of a human body, leads out blood of the human body from an artery, performs purification treatment, and then is returned to the human body from a vein. The arteriovenous fistula puncture needle is a disposable medical appliance and is mostly used for critically ill patients, so if the puncture needle is not well treated after being used, medical staff exposed by profession, post-stage medical waste treatment staff and bad persons can be recycled and reused, great cross contamination and disease propagation can be caused, and the problem that how to avoid the puncture needle cannot be reused is solved at present.

Therefore, it is necessary to develop a safe winged arteriovenous fistula puncture needle to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a safe area wing arteriovenous fistula pjncture needle to avoid pjncture needle reuse, prevent unexpected acupuncture to hinder harm, thereby reached the purpose of safe handling.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a safe winged arteriovenous fistula puncture needle, which comprises a puncture needle body;

the puncture needle assembly comprises a puncture needle body and a fixing piece connected to the puncture needle body; the puncture needle comprises a protective sleeve, a slide is arranged in the protective sleeve, an opening is formed in one end of the slide, a locking piece is arranged in the slide, the puncture needle body extends into the slide through the opening, and the locking piece is matched with the fixing piece to lock the puncture needle body in the slide.

In some embodiments of the present invention, the locking member includes a boss, and the boss abuts against the fixing member.

In some embodiments of the present invention, in a direction in which the puncture needle body extends into the slide, the boss gradually extends toward a middle portion of the slide so that a portion of the boss where the slide is located gradually narrows.

In some embodiments of the present invention, the locking member further comprises a resilient tab for locking the fixing member.

In some embodiments of the present invention, the free end of the elastic piece and the boss are opposite to each other.

In some embodiments of the present invention, a pre-positioning element is further disposed in the sliding way, the pre-positioning element is matched with the fixing element to fix the puncture needle body in the sliding way, and the pre-positioning element is located between the opening and the locking element.

In some embodiments of the present invention, the pre-positioning member includes a groove and a positioning protrusion, the positioning protrusion is inserted into the groove and the positioning protrusion and the groove define a portion between the groove and the slide.

In some embodiments of the utility model, still including setting up the groove of keeping in of slide internal surface, the groove of keeping in is used for holding pjncture needle subassembly, the groove of keeping in is located the preliminary setting element with between the locking piece.

In some embodiments of the present invention, the outer surface of the protective sleeve is provided with ribs, and the protective sleeve is away from the open end of the protective sleeve.

In some embodiments of the present invention, the fixing member includes a needle seat and a needle handle connected to the needle seat, the puncture needle body is communicated with the blood collection tube through the needle seat, and the locking member is matched with the needle seat and/or the needle handle.

The safe winged arteriovenous fistula puncture needle has the characteristics and advantages that: after the puncture needle is used, the puncture needle body is collected into the slide way from the opening of the protective sleeve, the puncture needle body is locked in the slide way by matching the locking piece and the fixing piece, and the venous fistula puncture needle is ensured to be used again, so that the purpose of safe use is achieved. At the moment, the puncture needle body is completely accommodated in the protective sleeve, and the needle point of the puncture needle body is prevented from extending out of the slide way, so that the safety of the used puncture needle assembly is further ensured, and the damage of accidental needle stick injury is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of a needle in accordance with an embodiment of the present invention;

fig. 2 is a schematic view of a protective casing according to an embodiment of the invention.

The reference numbers illustrate:

1. an introducer needle assembly; 11. a puncture needle body; 12. a fixing member; 121. a needle seat; 122. a needle handle; 13. a puncture needle sleeve;

2. a protective sleeve; 21. a slideway; 211. an opening; 22. a locking member; 221. a boss; 222. a spring plate; 23. a pre-positioning element; 231. a groove; 232. positioning protrusions; 24. a temporary storage tank; 25. ribs; 26. pressing the hand;

3. a blood collection tube; 31. a clamp;

4. an inner conical joint; 41. a joint protection sleeve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the utility model provides a safe winged arteriovenous fistula puncture needle, which comprises; the puncture needle assembly 1 comprises a puncture needle body 11 and a fixing piece 12 connected to the puncture needle body 11; protective sheath 2, be equipped with slide 21 in the protective sheath 2, the one end of slide 21 is equipped with opening 211, be equipped with locking piece 22 in the slide 21, pjncture needle body 11 passes through opening 211 stretches into in the slide 21, locking piece 22 with mounting 12 cooperate with pjncture needle body 11 locking is in the slide 21.

The utility model discloses a safe area wing arteriovenous fistula pjncture needle: after the puncture needle is used, the puncture needle body 11 is taken into the slide rail 21 from the opening 211 of the protective sleeve 2, and then the puncture needle body 11 is locked in the slide rail 21 by the matching of the locking piece 22 and the fixing piece 12, so that the puncture needle assembly 1 is locked in the protective sleeve 2, the puncture needle assembly 1 can not slide out from the slide rail 21, the venous fistula puncture needle can not be reused, and the purpose of safe use is achieved. At this time, the puncture needle body 11 is completely accommodated in the protective sleeve 2, so that the needle tip of the puncture needle body 11 is prevented from extending out of the slideway 21, and the safety of the puncture needle after use is further ensured.

In some embodiments of the present invention, the opening 211 may be an outwardly expanding beveled opening to facilitate sliding the lancet assembly 1 along the slide 21 into the shield 2.

In some embodiments of the present invention, the locking member 22 includes a boss 221, and the boss 221 abuts against the fixing member 12. It can be understood that the boss 221 can be disposed at the tail of the slideway 21, and the boss 221 allows the puncture needle assembly 1 to pass through in only one direction, and cannot exit from the protective sleeve 2, so as to achieve the effect of being locked.

In some embodiments of the present invention, in the direction in which the puncture needle body 11 extends into the slide rail 21, the boss 221 gradually extends toward the middle of the slide rail 21 so as to gradually narrow the portion of the slide rail 21 at the boss 221. It will be appreciated that the projections 221 are toothed, i.e. generally triangular, to facilitate sliding of the lancet assembly 1 into the rear of the slideway 21.

In some embodiments of the present invention, the locking member 22 further comprises a spring sheet 222 for locking the fixing member 12. In some embodiments of the present invention, the free end of the elastic sheet 222 is opposite to the boss 221. It can be understood that the elastic sheet 222 is arranged at the rear part of the slide way 21, the elastic sheet 222 is bent when the puncture needle assembly 1 passes through the elastic sheet 222, the puncture needle assembly 1 can more easily enter the protective sleeve 2, and the elastic sheet 222 is restored after the puncture needle assembly 1 passes through the elastic sheet 222, so that the puncture needle assembly 1 cannot retract to achieve the purpose of locking.

In some embodiments of the present invention, a pre-positioning element 23 is further disposed in the sliding channel 21, the pre-positioning element 23 is matched with the fixing element 12 to fix the puncture needle body 11 in the sliding channel 21, and the pre-positioning element 23 is located between the opening 211 and the locking element 22. It will be appreciated that the lancet assembly 1 is semi-locked within the track 21 by the pre-positioning member 23, i.e., the pre-positioning member 23 is engaged with the mounting member 12 to secure the lancet assembly 1 within the track 21, while the pre-positioning member 23 is disengaged from the mounting member 12 to allow the lancet assembly 1 to slide out of the track 21.

In some embodiments of the present invention, the pre-positioning element 23 includes a groove 231 and a positioning protrusion 232, the positioning protrusion 232 extends into the groove 231, and the positioning protrusion 232 and the groove 231 define a portion therebetween to form the slide 21. It can be understood that the front portion of the slide 21 is a straight slide 21, the middle portion of the slide 21 is provided with a groove 231 and a positioning protrusion 232, the lancet assembly 1 can have a resistance when passing through the groove 231 and the positioning protrusion 232, so as to prevent the lancet assembly 1 from being locked in advance due to misoperation and being unable to be used, and after slightly increasing the push-pull force on the lancet assembly 1, the lancet assembly 1 can pass through the groove 231 and the positioning protrusion 232, so that the lancet assembly 1 can extend into the slide 21 or slide out of the slide 21.

In some embodiments of the present invention, the needle protection device further comprises a temporary storage groove 24 disposed on the inner surface of the slide 21, the temporary storage groove 24 is used for accommodating the puncture needle assembly 1, and the temporary storage groove 24 is located between the pre-positioning element 23 and the locking element 22. It can be understood that the puncture needle assembly 1 enters the temporary storage groove 24 through the groove 231 and the positioning protrusion 232, and at this time, the puncture needle assembly 1 is in a half-locked state, the needle point of the puncture needle body 11 is not completely received by the protection cover 2, and the puncture needle body 11 can still exit from the protection cover 2, or continuously enter the protection cover 2 completely to be completely locked, and the needle point is completely received by the protection cover 2.

In some embodiments of the present invention, the outer surface of the protective sheath 2 is provided with ribs 25, and one end of the protective sheath 2 away from the opening 211 is provided with a ring-shaped press handle 26. It will be appreciated that one end of the ribs 25 can be made thinner and the other end of the ribs 25 can be made thicker to ensure that the sleeve 2 is sufficiently secure yet somewhat resilient. Meanwhile, the end of the protective sleeve 2 is provided with a ring-shaped press handle 26 for achieving the purposes of skid resistance and reinforcement.

In some embodiments of the present invention, the fixing member 12 includes a needle seat 121 and a needle handle 122 connected to the needle seat 121, the puncture needle body 11 is communicated with the blood collection tube 3 through the needle seat 121, and the locking member 22 is matched with the needle seat 121 and/or the needle handle 122. The puncture needle body 11 is provided with a puncture needle sleeve 13 so as to protect the puncture needle body 11. The blood collection tube 3 can be arranged in the protective sleeve 2.

In some embodiments of the present invention, a clamp 31 is disposed on the blood collection tube 3, so as to fix the blood collection tube 3. The tip of heparin tube 3 is equipped with interior cone joint 4, is equipped with on the interior cone joint 4 and connects protective sheath 41, is convenient for be connected with the blood collection pipe through interior cone joint 4.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a safe winged arteriovenous fistula pjncture needle which characterized in that includes:

the puncture needle assembly comprises a puncture needle body and a fixing piece connected to the puncture needle body;

the puncture needle comprises a protective sleeve, a slide is arranged in the protective sleeve, an opening is formed in one end of the slide, a locking piece is arranged in the slide, the puncture needle body is taken into the slide through the opening, and the locking piece is matched with the fixing piece to lock the puncture needle body in the slide.

2. The safe winged arteriovenous fistula puncture needle of claim 1 wherein the locking member comprises a boss that stops against the securing member.

3. The safe winged arteriovenous fistula puncture needle of claim 2 wherein the boss extends gradually toward the middle of the slideway in the direction of receipt of the needle body into the slideway to gradually narrow a portion of the slideway at the boss.

4. The safe winged arteriovenous fistula puncture needle of claim 2 wherein the locking member further comprises a resilient tab for locking the securing member.

5. The safe winged arteriovenous fistula puncture needle of claim 4 wherein the free end of the resilient tab is disposed directly opposite the boss.

6. The safe winged arteriovenous fistula puncture needle of claim 1, wherein a pre-positioning element is further disposed in the slide, the pre-positioning element cooperates with the fixing element to fix the puncture needle body in the slide, and the pre-positioning element is located between the opening and the locking element.

7. The safe winged arteriovenous fistula puncture needle of claim 6 wherein the pre-positioning member comprises a groove and a positioning projection which are oppositely arranged, the positioning projection extends into the groove and a portion of the slide is defined between the positioning projection and the groove.

8. The safe winged arteriovenous fistula puncture needle of claim 6 further comprising a temporary storage groove disposed on the inner surface of the slide for accommodating the puncture needle assembly, the temporary storage groove being located between the pre-positioning member and the locking member.

9. The safe winged arteriovenous fistula puncture needle of claim 1 wherein the protective sheath has ribs on its outer surface and a ring-shaped knob on the end of the protective sheath remote from the opening.

10. The safe winged arteriovenous fistula puncture needle of claim 1, wherein the fixing member comprises a needle seat and a needle handle connected to the needle seat, the puncture needle body is communicated with a blood collection tube through the needle seat, and the locking member is matched with the needle seat and/or the needle handle.