CN210871758U

CN210871758U - Disposable needle for bloodletting

Info

Publication number: CN210871758U
Application number: CN201921275730.7U
Authority: CN
Inventors: 王娟; 王秋兰; 黄平平
Original assignee: Liuzhou Maternity and Child Healthcare Hospital
Current assignee: Liuzhou Maternity and Child Healthcare Hospital
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-06-30
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a disposable syringe needle for bloodletting relates to medical instrument technical field. The disposable bloodletting needle comprises a shell, wherein a pressing head is arranged at the upper end of the shell, the side surface of the pressing head is connected with the shell in a sliding manner, a supporting elastic sheet and a stopping part are arranged on two opposite sides in the shell, the supporting elastic sheet is positioned above the stopping part, a clamping groove is formed between the tail end of the stopping part and the side surface of the shell, the lower end of the pressing head is connected with a transverse push rod, and two ends of the transverse push rod are respectively connected with a clamping hook which can be clamped in the clamping groove through elastic pieces; the lower end of the transverse push rod is sequentially connected with a needle post and a needle head, the lower end of the shell is provided with a needle head outlet, the needle head is sleeved with a spring, one end of the spring is abutted against the tail end of the needle post, and the other end of the spring is abutted against the inner bottom of the shell; the side surface of the pressing head is also provided with a cross bar. The utility model discloses an adopt the pressing means to control stretching out and returning of bleeding needle and contract, can effectually avoid polluting, also can avoid the syringe needle to stab the cleanup crew simultaneously.

Description

Disposable needle for bloodletting

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a disposable syringe needle for bloodletting is related to.

Background

The bleeding of the channels and collaterals is a common treatment method in the traditional Chinese medicine. The bloodletting needle is improved from a three-edged needle to a common disposable sterile injection needle today, but the conventional disposable bloodletting needle can stab a cleaner if the needle is thrown away directly after being used, and sometimes bloodletting needs to be performed on a plurality of parts of the same patient (for example, blood drawing cannot be performed for the first time and then different parts are replaced for drawing), if one part and one needle are wasted, so that one bloodletting needle can be repeatedly used on the same patient within a short time period (for example, about 3 minutes) during bloodletting, and an operator can be in danger of being punctured by the needle in the process. And the needle may be contaminated if exposed during the process of finding the appropriate site for exsanguination.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, it is necessary to provide a disposable blood bleeding needle, which can effectively avoid contamination and prevent the needle from stabbing cleaning personnel by controlling the extension and retraction of the blood bleeding needle in a pressing manner.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a disposable blood letting needle head comprises a shell, wherein a pressing head is arranged at the upper end of the shell, the lower end of the pressing head extends into the shell, the side face of the pressing head is connected with the shell in a sliding mode, supporting elastic sheets and stopping portions are arranged on two opposite sides in the shell, the supporting elastic sheets are located above the stopping portions, a clamping groove is formed between the tail ends of the stopping portions and the side face of the shell, the lower end of the pressing head is connected with a transverse push rod, two ends of the transverse push rod are respectively connected with clamping hooks through elastic pieces, and the clamping hooks can be clamped in the clamping groove; one side, far away from the pressing head, of the transverse push rod is connected with a needle post, the tail end of the needle post is connected with a needle head, the lower end of the shell is provided with a needle head outlet, a spring is sleeved on the needle head, one end of the spring abuts against the tail end of the needle post, and the other end of the spring abuts against the inner bottom of the shell around the edge of the needle head outlet; the side surface of the pressing head close to the upper end is also provided with a cross rod, and the pressing head can rotate by pushing the cross rod so as to drive the transverse push rod to rotate.

Furthermore, the upper end of the pressing head is smooth, an end cover is arranged at the top end of the shell and hinged with the shell, and a through hole for the pressing head to pass through is formed in the end cover.

Furthermore, the upper end of the shell is also provided with a turnover cover used for covering the pressing head and the cross rod, and one bottom edge of the turnover cover is hinged with the end cover.

Furthermore, the shell is a cylinder-like body, one side surface of the shell is an arc-shaped convex surface, and two side surfaces of the shell adjacent to the arc-shaped protrusion are arc-shaped concave surfaces.

Further, the stopping part is a downward inclined protruding strip.

Furthermore, the size of the through hole is matched with the diameter of the pressing head.

Furthermore, a marking line is further arranged on the end cover and below the cross rod, and the marking line is parallel to the axial direction of the cross rod before being pushed.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a set up elastic component and trip and backstop portion etc. at press head, horizontal push rod both ends, make and press the press head back downwards, horizontal push rod downstream, trip downstream and card simultaneously in the draw-in groove that forms between the terminal of backstop portion and the side of casing, and horizontal push rod's downstream can make the needle bar promote the syringe needle and stretch out from the syringe needle export, has finally realized stretching out and fixing of syringe needle, can be used for the exsanguination. After the bloodletting is accomplished, press once more the press head to promote the horizontal pole and make the press head rotate, and then drive horizontal push rod and rotate, make trip and draw-in groove dislocation, under the resilience force effect of spring, can realize the back of contracting of syringe needle. Therefore, the utility model discloses an adopt the pressing means to control stretching out and retracting of bleeding needle, can avoid polluting effectively, also can avoid the syringe needle to stab the cleanup crew simultaneously.

Drawings

FIG. 1 is a schematic structural view of a disposable blood drawing needle before being pressed (the needle is not extended);

fig. 2 is a schematic structural view of the disposable phlebotomy needle according to the embodiment of the present invention after being pressed (the needle is extended).

In the drawing, 1-shell, 2-pressing head, 3-stopping part, 4-transverse push rod, 5-elastic part, 6-clamping hook, 7-needle column, 8-needle, 9-spring, 10-transverse rod, 11-end cover, 12-flip and 13-supporting elastic sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Examples

As shown in fig. 1 and 2, a disposable blood letting needle comprises a housing 1, a pressing head 2 is disposed at an upper end of the housing 1, a lower end of the pressing head 2 extends into the housing 1, a side surface of the pressing head 2 is slidably connected to the housing 1, a supporting elastic sheet 13 and a stopping portion 3 are disposed at two opposite sides in the housing 1, the supporting elastic sheet 13 is located above the stopping portion 3, a clamping groove is formed between a terminal of the stopping portion 3 and a side surface of the housing 1, and the stopping portion 3 is specifically a downward-inclined protruding strip. The lower extreme of press head 2 is connected with horizontal push rod 4, the both ends of horizontal push rod 4 are connected with trip 6 through elastic component 5 respectively, trip 6 support in support on the shell fragment 13, because support shell fragment 13 has elasticity, when pressing press head 2 downwards, trip 6 pushes down and supports behind the shell fragment 13 can block locate in the draw-in groove. In this embodiment, the pressing head 2 is a hollow pressing head, the supporting elastic sheet 13 can be a rubber sheet, and the elastic member 5 can be a sponge.

One side of the transverse push rod 4, which is far away from the pressing head 2, is connected with a needle post 7, the tail end of the needle post 7 is connected with a needle head 8, the lower end of the shell 1 is provided with a needle head outlet, a spring 9 is sleeved on the needle head 8, one end of the spring 9 abuts against the tail end of the needle post 7, and the other end of the spring 9 abuts against the inner bottom of the shell 1 around the edge of the needle head outlet. The side surface of the pressing head 2 close to the upper end is fixedly provided with a cross rod 10, and the pressing head 2 can rotate by pushing the cross rod 10 so as to drive the transverse push rod 4 to rotate.

Furthermore, the upper end of the pressing head 2 is smooth, an end cover 11 is arranged at the top end of the shell 1, the end cover 11 is hinged to the shell 1, a through hole for the pressing head 2 to pass through is formed in the end cover 11, and the size of the through hole is matched with the diameter of the pressing head 2.

Furthermore, in this embodiment, the upper end of the housing 1 is further provided with a flip 12 for covering the pressing head 2 and the cross bar 10, a bottom edge of the flip 12 is hinged to the end cover 11, and the flip 12 can prevent the needle 8 from extending out when a medical staff or the like accidentally presses the pressing head 2, so as to prevent the hands of the medical staff from being injured or plastic articles from being scratched, thereby playing a role in protection.

Further, in this embodiment, the housing 1 is a cylinder-like body, one side surface of the housing 1 is an arc convex surface, and two side surfaces of the housing 1 adjacent to the arc convex surface are arc concave surfaces, so as to facilitate holding by a hand.

Further, in the present embodiment, an indication line (straight line) is further provided on the end cap 11 below the crossbar 10, and the indication line is parallel to the axial direction of the crossbar 10 (the axial direction of the crossbar 10 before being pushed). After the needle 8 is extended and retracted once, the cross rod 10 is pushed to rotate the pressing head 2 in the retraction operation of the needle 8, if the needle needs to be extended again, the cross rod 10 is pushed again to rotate the pressing head 2 to enable the axial direction of the cross rod 10 to be parallel to the marking line, and the extension operation of the needle 8 can be repeated by pressing the pressing head 2 again.

The utility model discloses during the use, through pressing down press head 2, horizontal push rod 4 downstream, trip 6 at horizontal push rod 4 both ends pushes down support behind shell fragment 13 with backstop portion 3 butt, because backstop portion 3 is the abrupt strip of downward sloping, elastic component 5 has certain elasticity, when trip 6 receives decurrent pressure, elastic component 5 is pressed, make trip 6 can continue downstream along backstop portion 3, after trip 6 downstream surpasss backstop portion 3's end, then because the resilience of elastic component 5, make trip 6 can block in the draw-in groove of locating backstop portion 3's terminal and casing 1's side within a definite time, can realize stretching out and fixing of syringe needle 8 this moment, spring 9 is in by compression state. After the bloodletting is finished, the pressing head 2 is pressed again, the transverse rod 10 is pushed to enable the pressing head 2 to rotate, the transverse push rod 4 is driven to rotate, the clamping hook 6 and the clamping groove are staggered, the spring 9 recovers the original length, and the retraction of the needle head 8 can be realized under the elastic action of the spring 9.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. A disposable needle for phlebotomy is characterized in that: the pressing head is arranged at the upper end of the shell, the lower end of the pressing head extends into the shell, the side face of the pressing head is connected with the shell in a sliding mode, a supporting elastic sheet and a stopping portion are arranged on two opposite sides in the shell, the supporting elastic sheet is located above the stopping portion, a clamping groove is formed between the tail end of the stopping portion and the side face of the shell, the lower end of the pressing head is connected with a transverse push rod, two ends of the transverse push rod are connected with clamping hooks through elastic pieces respectively, and the clamping hooks can be clamped in the clamping groove; one side, far away from the pressing head, of the transverse push rod is connected with a needle post, the tail end of the needle post is connected with a needle head, the lower end of the shell is provided with a needle head outlet, a spring is sleeved on the needle head, one end of the spring abuts against the tail end of the needle post, and the other end of the spring abuts against the inner bottom of the shell around the edge of the needle head outlet; the side surface of the pressing head close to the upper end is also provided with a cross rod, and the pressing head can rotate by pushing the cross rod so as to drive the transverse push rod to rotate.

2. The disposable phlebotomy needle of claim 1, wherein: the upper end of the pressing head is smooth, an end cover is arranged at the top end of the shell and hinged with the shell, and a through hole for the pressing head to pass through is formed in the end cover.

3. The disposable phlebotomy needle of claim 2, wherein: the upper end of the shell is also provided with a turnover cover used for covering the pressing head and the cross rod, and one bottom edge of the turnover cover is hinged with the end cover.

4. The disposable phlebotomy needle of claim 1, wherein: the shell is a cylinder-like body, one side face of the shell is an arc-shaped convex face, and two side faces, adjacent to the arc-shaped protrusion, of the shell are arc-shaped concave faces.

5. The disposable phlebotomy needle of claim 1, wherein: the stopping part is a protruding strip inclining downwards.

6. The disposable phlebotomy needle of claim 2, wherein: the size of the through hole is matched with the diameter of the pressing head.

7. The disposable phlebotomy needle of claim 2, wherein: and a marking line is also arranged below the cross rod on the end cover, and the marking line is parallel to the axial direction of the cross rod before being pushed.