CN215875782U

CN215875782U - Improved structure of remaining needle

Info

Publication number: CN215875782U
Application number: CN202121724970.8U
Authority: CN
Inventors: 陈丽文; 张纯真; 陈星宇; 阳清伟; 苗佳音
Original assignee: Zhongshan Hospital Xiamen University
Current assignee: Zhongshan Hospital Xiamen University
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-02-22
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses an improved structure of a remaining needle, which comprises: the needle core body penetrates through the accommodating cavity of the cannula base and the cannula, so that a needle head of the needle core is positioned outside the cannula, one side of the cannula base is connected with the extension tube, one end of the extension tube, far away from the cannula base, is connected with the connector, and the extension tube is mutually communicated with the accommodating cavity of the cannula base and the connector; the sleeve seat and the extension pipe are made of transparent materials, and a magnifying lens is arranged in the connecting area of the sleeve seat and the extension pipe. The puncture needle can effectively assist nurses to judge whether the indwelling needle is smoothly punctured into the blood vessel, improves the puncture success rate and reduces the pain of patients caused by repeated venipuncture.

Description

Improved structure of remaining needle

Technical Field

The utility model relates to the field of medical instruments, in particular to an improved structure of an indwelling needle.

Background

Venous indwelling needles are also known as venous trocars. It is composed of stainless steel needle core, soft sleeve and plastic sleeve seat. The puncture is performed by inserting the cannula and the stylet into the blood vessel together, and after the cannula is fed into the blood vessel, the stylet is withdrawn, and only the soft cannula is left in the blood vessel for transfusion. In the clinical transfusion process, repeated puncture on the skin of a patient can be avoided. The method for normally judging whether the indwelling needle pierces the blood vessel is to see whether blood flows back into the needle tube, and the nurse often cannot judge accurately because many patients with advanced age or weak bodies clinically do not have obvious blood flow back.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an improved structure of an indwelling needle, which can effectively assist a nurse in judging whether the indwelling needle smoothly punctures a blood vessel, improve the puncture success rate and reduce the pain of a patient caused by repeated venipuncture.

In order to achieve the above purpose, the solution of the utility model is:

an improved structure of an indwelling needle comprising: the needle core body penetrates through the accommodating cavity of the cannula base and the cannula, so that a needle head of the needle core is positioned outside the cannula, one side of the cannula base is connected with the extension tube, one end of the extension tube, far away from the cannula base, is connected with the connector, and the extension tube is mutually communicated with the accommodating cavity of the cannula base and the connector; the sleeve seat and the extension pipe are made of transparent materials, and a magnifying lens is arranged in the connecting area of the sleeve seat and the extension pipe.

Preferably, the magnifier is externally fixed on the outer wall of the extension tube.

Preferably, the magnifier is arranged on the extension tube, the magnifier and the extension tube are integrally formed, and one region of the tube wall of the transparent extension tube is directly arranged to be the magnifier with a thin middle convex edge.

Preferably, the magnifying lens is externally fixed on the outer wall of the sleeve seat.

Preferably, the magnifying lens is arranged on the sleeve seat, the magnifying lens and the sleeve seat are integrally formed, and one region of the seat wall of the transparent sleeve seat is directly arranged to be the magnifying lens with the middle protruding edge being thinner.

Preferably, the method further comprises the following steps: the needle holding handle is sleeved at the other end of the cannula base and connected with the tail of the needle core, the isolation plug is arranged in the accommodating cavity, and the needle core penetrates through the isolation plug.

Preferably, a single-hand clamp is further arranged on the pipe body of the extension pipe.

Preferably, connect to set up to Y type joint, connect and communicate in the malleation side pipe of malleation joint one side including the malleation, the malleation is connected and is kept away from the one end of extension pipe is equipped with positive pressure valve, the one end that the malleation was kept away from to the side pipe is equipped with the end cover.

After the technical scheme is adopted, the observation visual field of a nurse can be enlarged by arranging the magnifier, under the condition that clinically elderly or weak patients do not have obvious blood backflow, blood can usually permeate into the transparent tee joint area when the indwelling needle is used, and the nurse can enlarge the visual field by means of the magnifier in the tee joint area, so that the blood backflow state can be conveniently observed, and whether the indwelling needle smoothly punctures into a blood vessel or not is judged.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a perspective view of another embodiment of the present invention.

Description of the symbols:

casing seat 1

Accommodating chamber 11

Sleeve 2

Needle core 3

Needle handle 4

Isolating plug 5

Extension pipe 6

Joint 7

Positive pressure joint 71

Positive pressure valve 711

Side tube 72

End cap 721

Magnifying glasses 8

A single-handed clip 9.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the improved structure of the indwelling needle of the present invention comprises: cannula seat 1, sleeve pipe 2, the nook closing member 3, hold needle handle 4, keep apart stopper 5, extension pipe 6 and joint 7, be equipped with in the cannula seat 1 and hold chamber 11, the one end adapter sleeve 2 of cannula seat 1, the intercommunication holds chamber 11 and sleeve pipe 2, 1 other pot head of cannula seat is established and is held needle handle 4, hold the afterbody of needle handle 4 connecting needle core 3, and mobilizable casing seat 1 that runs through of 3 main parts of nook closing member 11 and the sleeve pipe 2 of holding, make the syringe needle of nook closing member 3 be located the sleeve pipe 2 outside, it is equipped with stopper 5 to hold in the chamber 11, stopper 5 can be passed to the nook closing member 3, extension pipe 6 is connected to 1 one side of cannula seat, extension pipe 6 keeps away from the one end attach fitting 7 of cannula seat 1, extension pipe 6 and the chamber 11 that holds of cannula seat 1, connect 7 and communicate each other.

The cannula base 1 and the extension tube 6 are made of transparent materials, a three-way area A is formed at the joint of the cannula base 1 and the extension tube 6, a magnifying lens 8 is arranged on the three-way area A, the observation visual field of a nurse can be enlarged by the magnifying lens 8, and when the indwelling needle is used for clinically old or weak patients without obvious blood backflow, blood can usually permeate into the transparent three-way area, and the nurse can enlarge the visual field by the magnifying lens 8 of the three-way area A to be convenient for observing the blood backflow state, so that whether the indwelling needle smoothly punctures into a blood vessel or not is judged, the puncture success rate is improved, and the pain of the patients caused by repeated venipuncture is reduced.

Specifically, as shown in fig. 1, the magnifying lens 8 may be disposed on the extension tube 6 of the three-way region a, i.e., a magnifying lens 8 may be externally fixed on the outer wall of the extension tube 6, or the magnifying lens 8 and the extension tube 6 may be integrally formed, i.e., one of the regions of the tube wall of the transparent extension tube 6 is directly set as the magnifying lens 8 with a thinner middle protruding edge. Or as shown in fig. 2, the magnifying lens 8 can also be arranged on the sleeve base 1 of the three-way area a, i.e. a magnifying lens 8 can be fixed on the outer wall of the sleeve base 1, or the magnifying lens 8 and the sleeve base 1 can be integrally formed, i.e. one of the areas of the base wall of the transparent sleeve base 1 is directly arranged as the magnifying lens 8 with a thinner middle convex edge.

As shown in fig. 1 and 2, a single-hand clamp 9 may be further disposed on the extension tube 6. The joint 7 can be a Y-shaped joint 7, and comprises a positive pressure joint 71 and a side pipe 72 connected and communicated with one side of the positive pressure joint 71, wherein a positive pressure valve 711 is arranged at one end of the positive pressure joint 71 away from the extension pipe 6, and an end cover 721 is arranged at one end of the side pipe 72 away from the positive pressure joint 71.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the utility model, which is defined by the appended claims and their equivalents and modifications within the scope of the description.

Claims

1. An improved structure of an indwelling needle, comprising: a cannula seat, a cannula, a needle core, an extension tube and a joint, a accommodating cavity is provided in the cannula seat, and one end of the cannula seat is connected to the cannula, The accommodating cavity and the cannula are communicated with each other, and the main body of the needle core penetrates the accommodating cavity and the cannula of the cannula seat, so that the needle of the needle core is located outside the cannula, and one side of the cannula seat is connected to the extension The end of the extension pipe away from the casing seat is connected to the joint, and the extension pipe is communicated with the accommodating cavity and the joint of the casing seat; it is characterized in that:

The casing seat and the extension pipe are all made of transparent materials, and a magnifying glass is arranged in the connection area of the casing seat and the extension pipe.

2 . The improved structure of the indwelling needle according to claim 1 , wherein the external device of the magnifying glass is fixed on the outer wall of the extension tube. 3 .

3. The improved structure of the indwelling needle according to claim 1, characterized in that: the magnifying glass is arranged on the extension tube, the magnifying glass and the extension tube are integrally formed, and one area of the tube wall of the transparent extension tube is directly arranged Be the said magnifying glass with a thinner raised edge in the middle.

4 . The improved structure of the indwelling needle according to claim 1 , wherein the external device of the magnifying glass is fixed on the outer wall of the cannula seat. 5 .

5. The improved structure of the indwelling needle according to claim 1, characterized in that: the magnifying glass is provided on the casing seat, the magnifying glass and the casing seat are integrally formed, and the transparent seat wall of the casing seat is placed in the casing. An area is directly set to be the magnifying glass with the thinner middle raised edge.

6. The improved structure for indwelling needle according to any one of claims 1-5, characterized in that it further comprises: a needle holding handle and an isolation plug, the other end of the cannula seat is sleeved with the needle holding handle, so that the The needle handle is connected to the tail of the needle core, the isolation plug is arranged in the accommodation cavity, and the needle core passes through the isolation plug.

7 . The improved structure of the indwelling needle according to claim 6 , wherein a one-hand clamp is further arranged on the body of the extension tube. 8 .

8 . The improved structure of the indwelling needle according to claim 6 , wherein the joint is configured as a Y-shaped joint, comprising a positive pressure joint and a side pipe connected to one side of the positive pressure joint, and the positive pressure joint is far away from the positive pressure joint. 9 . One end of the extension pipe is provided with a positive pressure valve, and one end of the side pipe away from the positive pressure joint is provided with an end cover.