CN217091659U

CN217091659U - Anti-backflow remaining needle

Info

Publication number: CN217091659U
Application number: CN202220133791.5U
Authority: CN
Inventors: 文雪霖; 石松平; 秦璧; 谢秋玲; 王玉兰
Original assignee: Second Affiliated Hospital Of Guilin Medical University
Current assignee: Second Affiliated Hospital Of Guilin Medical University
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-08-02
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses an anti-backflow indwelling needle, which comprises an indwelling needle main body, wherein a transparent tee joint is arranged on the outer wall of the middle part of the indwelling needle main body, a catheter is connected on the outer wall of the bottom end of the transparent tee joint in a through manner, an isolating plug is arranged on the inner wall of the top part of the transparent tee joint, a steel needle is inserted into the isolating plug, an extension pipe is connected on the outer wall of one side of the bottom end of the transparent tee joint in a through manner, the end part of the extension pipe is connected with a positive pressure joint, an air bag is fixedly connected on the inner wall of one side of the catheter, and the air inlet end of the air bag is connected with an air inlet hose in a through manner; this novel set up the gasbag on the one side inner wall of pipe in needle structure is kept somewhere to the basis, under the gasbag inflation-free state, do not influence the normal use who keeps somewhere the needle, after keeping somewhere the needle infusion, carry out the gas injection through the gas injection soft valve, in gaseous injecting into the gasbag through the air inlet hose, the gasbag inflation is filled the inside of pipe, makes the sealed effect of pipe to avoid keeping somewhere the emergence of needle reflux blood return problem.

Description

Anti-backflow remaining needle

Technical Field

The utility model relates to the technical field of medical equipment, specifically be an anti-reflux indwelling needle.

Background

The use of the indwelling needle can reduce the pain of the patient caused by repeated venipuncture and the fear of injection, is convenient for clinical medication, emergency treatment medication of critical patients, reduces the workload of nurses and the pain of the sick children, so the venous indwelling needle is widely applied clinically; in the middle of the clinical work, after infusing through remaining the needle, seal the pipe through injecting the heparin salt solution in keeping somewhere the needle tubing, the blood return problem can appear in the needle of keeping somewhere more than 90% after sealing the pipe, the blood return leads to the blood stream to infect, produce the bacterium, because after the sealing, the needle tubing is kept somewhere in the injection again next day, the too much case of the inside blood return, breed the bacterium easily, lead to the blood stream to infect, also there is the problem of blockking up the pipeline easily, it is very meaningful to design an anti-reflux needle of keeping somewhere consequently.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides an anti-reflux indwelling needle.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a needle is kept somewhere to anti backflow, including keeping somewhere the needle main part, it is provided with transparent tee bend on the middle part outer wall of needle main part to keep somewhere, through connection has the pipe on the bottom outer wall of transparent tee bend, be provided with the isolation stopper on the top inner wall of transparent tee bend, the inside cartridge of isolating the stopper has the steel needle, through connection has the extension pipe on the bottom one side outer wall of transparent tee bend, the end connection of extension pipe has the malleation to connect, fixedly connected with gasbag on one side inner wall of pipe, the inlet end through connection of gasbag has the air inlet hose, the one end of air inlet hose runs through in transparent tee bend's external connection has the gas injection soft valve.

As an optimized technical proposal of the utility model, the gas injection end of the gas injection soft valve is connected with a gas injector interface.

The utility model has the advantages that: this kind of anti-reflux indwelling needle:

the air bag is arranged on the inner wall of one side of the catheter in the basic indwelling needle structure, the insertion of a steel needle in the catheter is not influenced under the condition that the air bag is not inflated, the normal use of the indwelling needle is not influenced, after the indwelling needle is used for transfusion, air is injected through the air injection soft valve, the air is injected into the air bag through the air inlet hose, the air bag is inflated to fill the interior of the catheter, and the catheter is sealed, so that the problem of backflow and blood return of the indwelling needle is avoided, the problem that excessive backflow and bacteria are easily bred in the indwelling needle, and the problem of blood stream infection is caused is avoided; when transfusion is needed again, the air in the air bag is pumped back by using the injector through the air injection soft valve, the sealed conduit is unobstructed, and normal transfusion can be realized.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the whole structure of an anti-reflux indwelling needle of the present invention;

FIG. 2 is a schematic view of a three-dimensional cutting structure of the middle transparent tee and the guide tube of the present invention;

FIG. 3 is an enlarged view of the area A in FIG. 2;

fig. 4 is an enlarged view of the structure of the region B in fig. 1 according to the present invention.

In the figure: 1. a main body of the indwelling needle; 2. a transparent tee joint; 3. a conduit; 4. an isolation plug; 5. a steel needle; 6. an extension tube; 7. a positive pressure joint; 8. an air bag; 9. an air intake hose; 10. a gas injection soft valve; 11. an insufflator interface.

Detailed Description

The preferred embodiments of the present invention will be described hereinafter with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the present invention.

Example (b): as shown in figures 1-4, the anti-reflux indwelling needle of the utility model comprises an indwelling needle body 1, a transparent tee joint 2 is arranged on the outer wall of the middle part of the indwelling needle body 1, a conduit 3 is connected on the outer wall of the bottom end of the transparent tee joint 2 in a through way, an isolating plug 4 is arranged on the inner wall of the top part of the transparent tee joint 2, a steel needle 5 is inserted in the isolating plug 4, an extension pipe 6 is connected on the outer wall of one side of the bottom end of the transparent tee joint 2 in a through way, the end part of the extension pipe 6 is connected with a positive pressure joint 7, an air bag 8 is fixedly connected on the inner wall of one side of the conduit 3, an air inlet end of the air bag 8 is connected with an air inlet hose 9 in a through way, one end of the air inlet hose 9 penetrates through the outer part of the transparent tee joint 2 and is connected with an air injection soft valve 10, wherein the indwelling needle structure is introduced in the prior art, the air bag 8 is arranged on the inner wall of one side of the conduit 3, and does not affect the insertion of the steel needle 5 in the conduit 3 under the non-inflation state of the air bag 8, also do not influence and infuse through malleation joint 7 and extension pipe 6, do not influence the normal use of remaining the needle, after the infusion of remaining needle, carry out the gas injection through gas injection soft valve 10 department, gaseous through the air inlet hose 9 inject into gasbag 8 in, the gasbag 8 inflation is filled the inside of pipe 3, makes the sealed effect of pipe 3 to avoid keeping somewhere the emergence of needle reflux blood return problem.

Wherein, the gas injection end of the gas injection soft valve 10 is connected with a gas injector interface 11, and the gas injection in the airbag 8 is performed by connecting a gas injection syringe at the gas injector interface 11.

When the novel anti-reflux indwelling needle works, the liquid injection of a patient is carried out through the basic structure of the indwelling needle, after the liquid injection, the connection of a gas injection syringe is carried out at the position of a connector 11 of the gas injector, the gas injection is carried out through the gas injection syringe, the air is injected into the air bag 8 through the gas injection soft valve 10 and the gas inlet hose 9, the gas injection soft valve 10 adopts latex materials, similar to a valve core, and is automatically closed after the gas injection, the backflow of the injected gas is avoided due to the arrangement of the gas injection soft valve 10, the air bag 8 expands to fill the inside of the guide tube 3, so that the guide tube 3 is sealed, the problem of the reflux and the blood return of the indwelling needle is avoided, when the transfusion is needed again, only the air in the air bag 8 needs to be pumped back through the gas injection soft valve 10 by using the syringe, the sealed guide tube 3 recovers smoothly, the normal transfusion can be carried out, and the insertion of the steel needle 5 in the guide tube 3 is not influenced under the non-inflation state of the air bag 8, the infusion through the positive pressure joint 7 and the extension tube 6 is not influenced, and the normal use of the remaining needle is not influenced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-reflux remaining needle comprises a remaining needle body (1) and is characterized in that a transparent tee joint (2) is arranged on the outer wall of the middle part of the remaining needle body (1), a guide pipe (3) is connected on the outer wall of the bottom end of the transparent tee joint (2) in a run-through manner, an isolation plug (4) is arranged on the inner wall of the top part of the transparent tee joint (2), a steel needle (5) is inserted into the isolating plug (4), an extension pipe (6) is connected on the outer wall of one side of the bottom end of the transparent tee joint (2) in a run-through manner, the end part of the extension pipe (6) is connected with a positive pressure joint (7), the inner wall of one side of the catheter (3) is fixedly connected with an air bag (8), the air inlet end of the air bag (8) is connected with an air inlet hose (9) in a penetrating way, and one end of the air inlet hose (9) penetrates through the outside of the transparent tee joint (2) and is connected with an air injection soft valve (10).

2. The anti-reflux indwelling needle according to claim 1, wherein an insufflator interface (11) is connected to the gas injection end of the gas injection soft valve (10).