CN211096655U

CN211096655U - Venous indwelling needle suitable for ascites concentration and reinfusion

Info

Publication number: CN211096655U
Application number: CN201921618496.3U
Authority: CN
Inventors: 李倩; 徐永素; 戴清香; 刘黔蜀; 薛顺
Original assignee: Affiliated Hospital of Zunyi Medical University
Current assignee: Affiliated Hospital of Zunyi Medical University
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-07-28
Anticipated expiration: 2029-09-26

Abstract

The utility model provides a needle is kept somewhere to vein suitable for concentrated reinfusion of ascites, including keeping somewhere needle body and outer tube, on the nook closing member of keeping somewhere needle body was located to the outer tube cover, and the tail end of outer tube is connected with the nook closing member tail end detachable of keeping somewhere the needle body through luer joint. The problem that the puncture fails due to the puncture of the outer cannula when the existing remaining needle is used for ascites concentration and reinfusion is solved. Belongs to the field of medical tools.

Description

Venous indwelling needle suitable for ascites concentration and reinfusion

Technical Field

The utility model relates to a vein indwelling needle suitable for ascites concentration and reinfusion, belonging to the field of medical tools.

Background

The ascites concentrating and back-infusing operation is a process of leading the ascites out of the body by using a mechanical pump, utilizing the principles of dialysis, ultrafiltration and adsorption of a special filter, super-filtering out excessive liquid, relieving abdominal distension of a patient, intercepting useful protein components, preventing nutrient components from being lost, and concentrating the ascites by about 20 times and then inputting the concentrated ascites into the abdominal cavity. The applicant has used disposable vein indwelling needles (specification: 14G, length 15mm, pen type and perforating pen type) of Shanghai general medical apparatus GmbH to perform ascites concentration reinfusion for patients since 2008, the core components of the disposable vein indwelling needle include a soft outer sleeve capable of being placed in an abdominal cavity and a stainless puncture guiding needle core, when the disposable vein indwelling needle is used, the outer sleeve and the front end of the needle core are punctured into the abdominal cavity together, when ascites is seen successfully by puncture (the catheter is fed and the needle core is withdrawn), 2/3 of the outer sleeve enters into an abdominal wall, but in the puncturing process, due to the flexibility of the skin of the abdominal wall, the needle core of the vein indwelling needle is often not fixed well, the outer sleeve is scratched, puncture failure is caused, the success rate of puncture is reduced, and great pain is brought to the patients by repeated puncture.

Disclosure of Invention

The utility model provides a needle is kept somewhere to vein suitable for concentrated feedback art of ascites to solve present needle of keeping somewhere when carrying out concentrated feedback art of ascites, the existence punctures the outer tube, leads to the problem of puncture failure.

In order to solve the problems, the venous indwelling needle suitable for the ascites concentration and reinfusion comprises an indwelling needle body and an outer sleeve, wherein the outer sleeve is sleeved on a needle core of the indwelling needle body, and the tail end of the outer sleeve is detachably connected with the tail end of the needle core of the indwelling needle body through a luer connector;

In the venous indwelling needle, a luer female connector is fixedly sleeved at the tail end of a needle core of the indwelling needle body, a luer sub connector matched with the luer female connector is fixedly arranged at the tail end of an outer sleeve, and the luer female connector is screwed up rightwards and loosened leftwards.

Compared with the prior art, the utility model discloses a luer connects and is connected outer tube and nook closing member, can avoid the puncture in-process because the pliability of stomach wall skin leads to the vein to keep somewhere that the nook closing member is fixed not good to the outer tube lacerate, arouses the problem of puncture failure to increase the success rate of puncture, avoid puncturing repeatedly and bring the misery for the patient, this institutional advancement is simple, preparation is convenient, low cost, suitable popularization and application.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of an indwelling needle body;

Fig. 3 is a schematic structural view of the outer sleeve.

Detailed Description

To further clarify the objects, technical solutions and advantages of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings.

Examples

Referring to fig. 1 to 3, the present embodiment provides a venous indwelling needle suitable for ascites concentration reinfusion, which includes an indwelling needle body 1 and an outer sleeve 2, the outer sleeve 2 is sleeved on a needle core of the indwelling needle body 1, and a tail end of the outer sleeve 2 is detachably connected to a tail end of the needle core of the indwelling needle body 1 through a luer connector, a luer connector 3 is sleeved and fixed on a tail end of the needle core of the indwelling needle body 1, a luer connector 4 matched with the luer connector 3 is fixed to a tail end of the outer sleeve 2, and is screwed up right and loosened left.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A venous indwelling needle suitable for ascites concentration and reinfusion is characterized in that: the indwelling needle comprises an indwelling needle body (1) and an outer sleeve (2), wherein the outer sleeve (2) is sleeved on a needle core of the indwelling needle body (1), and the tail end of the outer sleeve (2) is detachably connected with the tail end of the needle core of the indwelling needle body (1) through a luer connector.

2. The venous indwelling needle for ascites concentrating reinfusion according to claim 1, wherein: the tail end of the needle core of the indwelling needle body (1) is fixedly sleeved with a luer female connector (3), and the tail end of the outer sleeve (2) is fixedly provided with a luer sub-connector (4) matched with the luer female connector (3).