CN103705997A - Injection piece of infusion set - Google Patents

Abstract

The invention discloses an injection piece of an infusion set. The injection piece comprises a Y-shaped catheter body, a connector matched with a needle seat of a venous infusion needle is arranged on the lower portion of the Y-shaped catheter body, a rubber plug cover cap is arranged on one branch pipe on the upper portion of the Y-shaped catheter body, a valve cavity is formed in the end portion of the other branch pipe, a liquid outlet communicated with the branch pipes is formed in the lower portion of the valve cavity, a pipeline connector with an infusion channel is arranged on the upper portion of the valve cavity, a silica gel membrane matched with the infusion channel is arranged in the valve cavity, and a plurality of supporting columns supporting the silica gel membrane are arranged on the periphery of the liquid outlet. The connector is composed of an outer pipe and an inner pipe, the top end of the outer pipe is connected with the top end of the inner pipe, internal threads are arranged on the inner wall of the outer pipe, the top end of the inner pipe is communicated with the Y-shaped catheter body, and a catheter clamping groove is formed between the outer pipe and the inner pipe. The injection piece can prevent medicine from flowing back, the medicine can enter a human body at highest speed, and the injection piece is simple in structure and convenient to use, and can effectively improve production efficiency.

Description

Transfusion device injection member

Technical field

The present invention relates to a kind of area of medical devices, particularly a kind of transfusion device injection member.

Background technology

At present, the injection member of using clinically only has single function of injection, and medicinal liquid enters after tube for transfusion by injection member, easily upwards flow under pressure, for the patient who needs fast injection medicinal liquid, as there is the patient of infusion reaction and the patient of first aid, wasted rescue time.Before, nurse's common practice is to disconnect being connected of transfusion catheter and intravenous needle, from the quiet medicine that pushes away of intravenous needle flexible pipe, when this way has not only been wasted time but also intravenous needle flexible pipe and is again connected with transfusion catheter, easily produces bubble.In present transfusion device, between injection member and intravenous needle conduit, have one end tube for transfusion in addition, so during dosing, it is long that medicinal liquid enters time of human body, and transfusion device installation step is many, and production efficiency is low.

Summary of the invention

Technical problem to be solved by this invention is for the deficiencies in the prior art, and transfusion device injection member a kind of reasonable in design, convenient for production is provided.

Technical problem to be solved by this invention is to realize by following technical scheme, the present invention is a kind of transfusion device injection member, be characterized in: comprise Y shape catheter main body, the bottom of Y shape catheter main body is provided with the union joint coordinating with venous transfusion needle stand, one of them arm on Y shape catheter main body top is provided with plug block, the end of another arm is provided with valve pocket, the bottom of valve pocket is provided with the liquid outlet being communicated with arm, the top of valve pocket is provided with the pipe joint with infusion channel, in valve pocket, be provided with the gel silica membrane coordinating with above-mentioned infusion channel, on the periphery of liquid outlet, be provided with the some support columns that support gel silica membrane, outer tube and inner tube that described union joint is connected by top form, and the inwall of outer tube is provided with female thread, and inner tube top is communicated with Y shape catheter main body, is provided with conduit draw-in groove between outer tube and inner tube.

Compared with prior art, union joint of the present invention can directly join with venous transfusion needle stand, can save like this one section of conduit, shorten the time that medicine enters human body, can reduce the step of transfusion device assembling simultaneously, enhance productivity, gel silica membrane in one of them arm valve pocket has the effect of check valve in addition, when the plug block from another arm, during injectable drug, can prevent medicine adverse current, make medicine enter human body with prestissimo.

Accompanying drawing explanation

Fig. 1 is a kind of structural representation of the present invention.

The specific embodiment

Referring to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.

With reference to Fig. 1, a kind of transfusion device injection member, comprise Y shape cathetermain body 1, the bottom of Y shape cathetermain body 1 is provided with the union joint coordinating with venous transfusion needle stand, andouter tube 3 andinner tube 2 that described union joint is connected by top form, the inwall ofouter tube 3 is provided with female thread,inner tube 2 tops are communicated with Y shape cathetermain body 1, are provided with conduit draw-in groove, during use betweenouter tube 3 andinner tube 2, venous transfusion needle stand inserts in conduit draw-in groove, and rotation is tightened and is fixed on union joint by female thread.

One of them arm on Y shape cathetermain body 1 top is provided withplug block 4, quiet while pushing away medicine fast when needs, does not need to disconnect being connected of transfusion catheter and intravenous needle, can be blocked a shot and 4 is carried out dosing by the entry needle plug that punctures.

The end of another arm is provided withvalve pocket 6, the bottom ofvalve pocket 6 is provided with the liquid outlet being communicated with arm, the top ofvalve pocket 6 is provided with the pipe joint with infusion channel, when injection member is assemblied in transfusion device, pipe joint and infusion pipeline join, invalve pocket 6, be provided with thegel silica membrane 7 coordinating with above-mentioned infusion channel, on the periphery of liquid outlet, be provided with the somesupport columns 5 that support gel silica membrane 7.During use, during liquid positive flow, medicinal liquid promotesgel silica membrane 7 and moves down the infusion channel of leavingvalve pocket 6 tops, and the rear supportedpost 5 ofgel silica membrane 7 is held, and medicinal liquid flows out from entering the liquid outlet ofvalve pocket 6 bottoms between support column 5.When liquid countercurrent, under fluid pressure effect,gel silica membrane 7 is upwards blocked the infusion channel onvalve pocket 6 tops, thereby stops liquid countercurrent.

Claims (1)

1. a transfusion device injection member, it is characterized in that: comprise Y shape catheter main body, the bottom of Y shape catheter main body is provided with the union joint coordinating with venous transfusion needle stand, one of them arm on Y shape catheter main body top is provided with plug block, the end of another arm is provided with valve pocket, the bottom of valve pocket is provided with the liquid outlet being communicated with arm, the top of valve pocket is provided with the pipe joint with infusion channel, in valve pocket, be provided with the gel silica membrane coordinating with above-mentioned infusion channel, on the periphery of liquid outlet, be provided with the some support columns that support gel silica membrane; Outer tube and inner tube that described union joint is connected by top form, and the inwall of outer tube is provided with female thread, and inner tube top is communicated with Y shape catheter main body, is provided with conduit draw-in groove between outer tube and inner tube.

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