CN210044617U

CN210044617U - Retraction safety type remaining needle

Info

Publication number: CN210044617U
Application number: CN201920150169.3U
Authority: CN
Inventors: 刘雪美; 龚凯彬
Original assignee: Suzhou Lingyan Medical Technology Co Ltd
Current assignee: Suzhou Lingyan Medical Technology Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-02-11
Anticipated expiration: 2029-01-29

Abstract

The utility model provides a needle is kept somewhere to safe type of returning to form, belong to medical instrument and equipment technical field, including the pipe fitting, the pjncture needle, the body and the shielding piece of returning to form, the pjncture needle setting is returning to form internally, and the pjncture needle can be followed and is returned the body removal and stretch into in the pipe fitting, the shielding piece setting is returning to form internally, and the shielding piece cover is established on the outer wall of pjncture needle, the puncture handle sets up in spacing spout, and the puncture handle can remove in spacing spout, be equipped with first through-hole on the shielding piece, the pjncture needle sets up in first through-hole, and the pjncture needle. The utility model discloses an irregular shape is located to the shielding piece, is connected with the pjncture needle before the puncture, gets into the retraction body intracavity through the puncture handle, and it is internal that contracts to contract with the pjncture needle after the puncture, and the shielding piece card is gone into retraction body pjncture needle extension to the centre bore of shielding piece staggers with the needle tubing concentric hole and the shielding needle point secondary passes, and the needle point effective control is retracting the body cavity, has avoided pjncture needle point puncture accident.

Description

Retraction safety type remaining needle

Technical Field

The utility model belongs to the technical field of medical instrument and equipment, specifically, relate to a needle is kept somewhere to safe type that contracts.

Background

The indwelling needle can be used for indwelling and interventional blood vessels for repeated infusion and injection, and is the most common infusion channel at present.

After the puncture of the ordinary indwelling needle is finished, the needle tube needs to be withdrawn, the needle point of the needle tube is completely exposed outside, medical personnel can easily puncture, if a patient carries infectious diseases, the medical personnel can be infected, physical injury is brought, and the life of the patient is threatened.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a needle is kept somewhere to the safe type that contracts, avoids medical personnel pjncture needle point puncture accident.

The technical scheme is as follows: the utility model provides a needle is kept somewhere to safe type that contracts, including pipe fitting, pjncture needle, the body that contracts and shielding piece, the pipe fitting sets up the needle tubing that contracts the body and stretches out the end, the pjncture needle sets up in the body that contracts, and the pjncture needle can be followed and contract the body and remove and stretch into the pipe fitting, the shielding piece sets up in the body that contracts, and the shielding piece cover is established on the outer wall of pjncture needle, it is equipped with first cavity in the body to contract, pjncture needle and shielding piece set up in first cavity, and the shielding piece is located the one end that first cavity is close to the pipe fitting, be equipped with spacing spout on the outer wall of the body that contracts, the one end of keeping away from the pipe fitting on the pjncture needle is equipped with the puncture handle, the puncture handle sets up in spacing spout to the puncture handle can move in spacing spout, be equipped, and the introducer needle may extend through the first throughbore and out of the catheter member. The utility model discloses a needle is kept somewhere to the safety type that contracts through the retraction body and the shielding piece that set up, can effectively accomplish the puncture back with the pjncture needle and contract internally to will contract the body shutoff through the shielding piece that contracts, prevent the pjncture needle roll-off retraction body.

Further, the catheter component comprises a catheter seat, a catheter and a rivet, the catheter seat is connected with one end of the retraction body, the rivet is arranged in the catheter seat, the rivet is riveted with the catheter, the catheter is arranged in the catheter seat through the rivet, and the puncture needle can extend into the catheter and extend out from the end, far away from the retraction body, of the catheter. The catheter component is separated from the retraction body through the catheter seat after the catheter is inserted into the catheter through the puncture needle, so that the normal use of the remaining needle is ensured.

Furthermore, the needle is kept somewhere to foretell safe type that contracts, the puncture handle includes pjncture needle connecting block and push-and-pull handle, the pjncture needle is fixed in the pjncture needle connecting block, the push-and-pull handle sets up on the outer wall of pjncture needle connecting block, the pjncture needle connecting block sets up in first cavity to the pjncture needle connecting block can remove in first cavity through push-and-pull handle, the one end of push-and-pull handle passes spacing spout and sets up the outside at the retraction body. The push-pull handle and the puncture needle can be connected through the puncture needle connecting block, and the puncture needle can move together in the retraction body in the moving process of the push-pull handle.

Furthermore, according to the retraction safety type indwelling needle, a set of guide sliding grooves are formed in the outer wall of the puncture needle connecting block, a set of sliding rails are arranged on the inner wall of the retraction body, and the sliding rails are arranged in the guide sliding grooves. The guide sliding groove and the sliding rail structure are arranged, so that the stability of the push-out and contraction process of the puncture needle is improved, the puncture needle is ensured to move along a straight line, and the puncture needle is prevented from deflecting and clamping stagnation.

Furthermore, according to the retraction safety type indwelling needle, one end of the limiting chute, which is far away from the catheter component, is provided with a limiting boss, and a gap is formed between the limiting bosses. The limiting lug boss can prevent the puncture handle from sliding out of the retraction body, and the puncture handle is effectively limited in the retraction body, so that the puncture needle is limited in the retraction body.

Furthermore, the retraction safety type indwelling needle is characterized in that an exhaust plug is arranged on the puncture needle connecting block. The vent plug is capable of effectively venting gas while confining liquid.

Furthermore, one end of the puncture needle close to the needle tip is provided with a blood return groove. A blood return groove is arranged to introduce blood into the needle tube.

Further, the needle is kept somewhere to foretell safe type that contracts, the shielding piece is irregular polyhedral structure, be equipped with a set of recess on the outer wall of shielding piece, the shielding piece passes through the recess and can removes in the slide rail. The groove is formed in the outer wall of the shielding block, so that the shielding block can move linearly along with the puncture needle in the retraction body without deflection.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: retraction safe type keep somewhere needle, simple structure, rationally, convenient to use, use is with low costs, adaptability is good, irregular shape is located to the shielding piece, be connected with the pjncture needle before the puncture, get into the retraction body intracavity through the puncture handle, it is internal that contracts with the pjncture needle retraction after the puncture, the shielding piece card goes into retraction body pjncture needle protrusion department to the centre bore of shielding piece staggers with needle tubing concentric hole and shielding needle point secondary passes, the needle point effective control is retracting the body cavity, the puncture needle point puncture accident has been avoided, has very high spreading value.

Drawings

FIG. 1 is a schematic structural view of the retraction safety type indwelling needle according to the present invention;

FIG. 2 is a cross-sectional view of the retraction safety type indwelling needle of the present invention in use;

FIG. 3 is an exploded view of the retraction safety type indwelling needle according to the present invention;

FIG. 4 is a cross-sectional view of the retraction safety type indwelling needle according to the present invention;

FIG. 5 is a schematic structural view of the retraction safety type indwelling needle according to the present invention;

fig. 6 is a schematic structural diagram of the shielding block of the present invention.

In the figure: the catheter comprises a catheter part 1, a catheter seat 11, a catheter 12, a rivet 13, a puncture needle 2, a puncture handle 21, a puncture needle connecting block 211, a push-pull handle 212, a guide sliding groove 213, a vent plug 214, a blood return groove 22, a retraction body 3, a first cavity 31, a limiting sliding groove 32, a sliding rail 33, a limiting boss 34, a gap 35, a shielding block 4, a first through hole 41 and a groove 42.

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 and intended to be used for 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", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, 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, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be 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 according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

The retraction safety type indwelling needle shown in fig. 1 to 6 comprises a catheter component 1, a puncture needle 2, a retraction body 3 and a shielding block 4, wherein the catheter component 1 is arranged at the needle tube extending end of the retraction body 3, the puncture needle 2 is arranged in the retraction body 3, the puncture needle 2 can move along the retraction body 3 and extend into the catheter component 1, the shielding block 4 is arranged in the retraction body 3, the shielding block 4 is sleeved on the outer wall of the puncture needle 2, a first cavity 31 is arranged in the retraction body 3, the puncture needle 2 and the shielding block 4 are arranged in the first cavity 31, the shielding block 4 is arranged at one end of the first cavity 31 close to the catheter component 1, a limit chute 32 is arranged on the outer wall of the retraction body 3, a puncture handle 21 is arranged at one end of the puncture needle 2 far away from the catheter component 1, the puncture handle 21 is arranged in the limit chute 32, and the puncture handle 21 can move in the limit chute 32, the shield block 4 is provided with a first through hole 41, the diameter of the first through hole 41 is larger than that of the puncture needle 2, the puncture needle 2 is disposed in the first through hole 41, and the puncture needle 2 can pass through the first through hole 41 and protrude from the catheter member 1. The shielding block 4 is of an irregular polyhedral structure, a group of grooves 42 are formed in the outer wall of the shielding block 4, and the shielding block 4 can move in the sliding rail 33 through the grooves 42. The puncture needle 2 in the present application is provided with a blood return groove 22 at the end near the needle tip. Wherein, the catheter component 1 comprises a catheter holder 11, a catheter 12 and a rivet 13, the catheter holder 11 is connected with one end of the retraction body 3, the rivet 13 is arranged in the catheter holder 11, the rivet 13 is riveted with the catheter 12, the catheter 12 is arranged in the catheter holder 11 through the rivet 13, and the puncture needle 2 can extend into the catheter 12 and extend out from the end of the catheter 12 far away from the retraction body 3. Thirdly, the puncture handle 21 comprises a puncture needle connecting block 211 and a push-pull handle 212, the puncture needle 2 is fixed in the puncture needle connecting block 211, the push-pull handle 212 is arranged on the outer wall of the puncture needle connecting block 211, the puncture needle connecting block 211 is arranged in the first cavity 31, the puncture needle connecting block 211 can move in the first cavity 31 through the push-pull handle 212, and one end of the push-pull handle 212 penetrates through the limiting sliding groove 32 and is arranged outside the retraction body 3. By pushing the push-pull handle 212, the puncture needle connecting block 211 can be pushed to move in the first cavity 31, and the puncture needle 2 can be driven to extend into the catheter 12 or retract from the catheter 12. The puncture needle connecting block 211 and the puncture needle 2 in the structure are fixedly connected by epoxy glue dispensing.

The utility model discloses an improve the stability that pjncture needle 2 removed, be equipped with a set of direction spout 213 on pjncture needle connecting block 211's the outer wall, be equipped with a set of slide rail 33 on the inner wall of the retraction body 3, slide rail 33 sets up in direction spout 213. The end of the limiting chute 32 far away from the catheter member 1 is provided with a limiting boss 34, and a gap 35 is arranged between the limiting bosses 34. The width of the gap 35 formed by the limit boss 34 is smaller than the width of the limit chute 32 and the width of the push-pull handle 212 arranged in the limit chute 32, so that the push-pull handle 212 can be limited in the limit chute 32.

In addition, the puncture needle connecting block 211 is provided with a vent plug 214. The vent plug 214 is effective to allow air to pass therethrough while preventing liquid from escaping.

The utility model discloses a needle is kept somewhere to the safe type that contracts theory of operation does:

during the indwelling needle inserting process, one end of the puncture needle 2 is arranged in the first through hole 41 of the shielding block 4 in the initial state, the catheter component 1 is arranged at the extending end of the puncture needle 2 of the retraction body 3, the puncture needle 2 moves in the first through hole 41 by pushing the puncture handle 21 to move in the first cavity 31, the puncture needle 2 and the first through hole 41 generate relative displacement because the shielding block 4 is blocked by the inner wall of the retraction body 3, the puncture needle 2 gradually extends into the catheter 12 and extends out from the tail end of the catheter 12, and then the indwelling needle is used according to the conventional process.

After the remaining needle is inserted, the puncture handle 21 is pulled to move in the first cavity 31, so that the puncture needle 2 gradually withdraws from the catheter 12 until the puncture needle 2 is completely retracted into the first cavity 31 of the retraction body 3, and the puncture needle 2 is withdrawn from the first through hole 41 of the shielding block 4 in the retraction process, the shielding block 4 of the irregular rhombohedron and the inner wall of the retraction body 3 generate different shapes and positions and roll to make the first through hole 41 and the puncture needle 2 dislocate to realize that the puncture needle cannot penetrate out, permanently and omnidirectionally limit the puncture needle 2 in the first cavity 31 of the retraction body 3, and the puncture handle 21 enables the puncture needle 2 to be unable to be pushed to the top under the action of the limit boss 34 to be limited in the retraction body 3.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a safe type of contracting keeps somewhere needle which characterized in that: comprises a guide pipe fitting (1), a puncture needle (2), a retraction body (3) and a shielding block (4), wherein the guide pipe fitting (1) is arranged at the needle tube extending end of the retraction body (3), the puncture needle (2) is arranged in the retraction body (3), the puncture needle (2) can move along the retraction body (3) and extend into the guide pipe fitting (1), the shielding block (4) is arranged in the retraction body (3), the shielding block (4) is sleeved on the outer wall of the puncture needle (2), a first cavity (31) is arranged in the retraction body (3), the puncture needle (2) and the shielding block (4) are arranged in the first cavity (31), the shielding block (4) is positioned at one end of the first cavity (31) close to the guide pipe fitting (1), a limiting chute (32) is arranged on the outer wall of the retraction body (3), a puncture handle (21) is arranged at one end of the puncture needle (2) far away from the guide pipe fitting (1), the puncture handle (21) is arranged in the limiting sliding groove (32), the puncture handle (21) can move in the limiting sliding groove (32), the shielding block (4) is provided with a first through hole (41), the puncture needle (2) is arranged in the first through hole (41), and the puncture needle (2) can penetrate through the first through hole (41) and extend out of the guide pipe fitting (1).

2. The retracting safety type indwelling needle according to claim 1, wherein: the catheter component (1) comprises a catheter seat (11), a catheter (12) and a rivet (13), the catheter seat (11) is connected with one end of the retraction body (3), the rivet (13) is arranged in the catheter seat (11), the rivet (13) is riveted with the catheter (12), the catheter (12) is arranged in the catheter seat (11) through the rivet (13), and the puncture needle (2) can extend into the catheter (12) and extend out from the end, far away from the retraction body (3), of the catheter (12).

3. The retracting safety type indwelling needle according to claim 1, wherein: the puncture handle (21) comprises a puncture needle connecting block (211) and a push-pull handle (212), the puncture needle (2) is fixed in the puncture needle connecting block (211), the push-pull handle (212) is arranged on the outer wall of the puncture needle connecting block (211), the puncture needle connecting block (211) is arranged in the first cavity (31), the puncture needle connecting block (211) can move in the first cavity (31) through the push-pull handle (212), and one end of the push-pull handle (212) penetrates through the limiting sliding groove (32) and is arranged outside the retraction body (3).

4. The retractably safe indwelling needle according to claim 3, wherein: be equipped with a set of direction spout (213) on the outer wall of pjncture needle connecting block (211), be equipped with a set of slide rail (33) on the inner wall of retraction body (3), slide rail (33) set up in direction spout (213).

5. The retracting safety type indwelling needle according to claim 1, wherein: spacing spout (32) keep away from the one end of pipe fitting (1) and be equipped with spacing boss (34), be equipped with gap (35) between spacing boss (34).

6. The retractably safe indwelling needle according to claim 3, wherein: and an air vent plug (214) is arranged on the puncture needle connecting block (211).

7. The retracting safety type indwelling needle according to claim 1, wherein: one end of the puncture needle (2) close to the needle point is provided with a blood returning groove (22).

8. The retractably safe indwelling needle according to claim 4, wherein: the shielding block (4) is of an irregular polyhedral structure, a group of grooves (42) are formed in the outer wall of the shielding block (4), and the shielding block (4) can move in the sliding rail (33) through the grooves (42).