CN2330314Y

CN2330314Y - Dialysis non-return trocar

Info

Publication number: CN2330314Y
Application number: CN 98219439
Authority: CN
Inventors: 陈宝平; 石兴元; 刘淑然; 陈玉萍; 王治中
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-08-06
Filing date: 1998-08-06
Publication date: 1999-07-28
Anticipated expiration: 2008-08-06

Abstract

The utility model relates to a dialysis non-return trocar, which is mainly provided with a non-return piece at the connecting point of a sleeve socket and a sleeve body. The other end of the sleeve body is provided with an inlying catheter. When a patient is carried out with therapy of puncture dialysis, blood flow can be effectively led out so long as a dialysis tube line is inserted into the utility model or the non-return piece is opened by a syringe. When the dialysis therapy is carried out or anticoagulant drugs are injected into the utility model, the dialysis pipeline or the syringe is drawn out. Thus the non-return piece can be automatically reset and is in an inactive state, so the efflux of blood can be effectively prevented. The utility model not only has low cost, but also has easy use.

Description

The dialysis non-return trocar

This utility model relates to a kind of apparatus that takes out medium in the human body, the non-return trocar of particularly dialysing, and it is applicable to urgent hemodialysis.

Usually, when the emergency treatment hemodialysis, making the normal puncture needle that adopts of puncture has two kinds.A kind of is veins indwelling catheter, is reached by joint to constitute with its flexible pipe that is communicated with successively and inlying catheter, and flexible pipe is provided with the clip that dams.This conduit can be used as the blood access that the chronic renal failure patients dialyses for a long time and uses, in the process of dialysis treatment, because of need are kept somewhere for a long time.So, higher requirement is arranged to adopting material.So, cost height, and operation more complicated.Another kind is common paracentesis trocar, and the union joint that is connected by conduit and one end constitutes.This paracentesis trocar is by being connected on the union joint and being positioned at the puncture needle of conduit, the tremulous pulse that directly punctures, treat arterial hemorrhage after, extract puncture needle, immediately syringe or dialysis catheter are connected on the union joint again, can finish the patients'blood dialysis treatment, or other back works.Though this paracentesis trocar cost is low, but when using, exist following defective: after dialysis, in order to prevent that blood coagulation from blocking paracentesis trocar, need to adopt syringe to inject anticoagulant in the trocar, injected when extracting syringe, arterial blood can spray thereupon, and the anticoagulant that will just inject flows out thereupon together, like this, not only influence the anticoagulant effect of anticoagulant, but also patients'blood is run off too much; In addition, when on union joint, connecting dialysis catheter, also have more blood and flow out, cause unnecessary loss of blood to patient.

The purpose of this utility model is to provide a kind of dialysis non-return trocar, as long as insertion dialysis catheter or syringe are opened the non-return sheet in the trocar, just can blood flow be drawn, carry out dialysis treatment or in the trocar, inject anticoagulation medicine, and extract dialysis catheter or syringe, the non-return sheet just sets back, and is in closed condition, can prevent effectively that blood from flowing out.

Its solution is: be provided with an elasticity non-return sheet at casing seat and union body connection, be connected with inlying catheter on an end of union body.

Owing to adopt technique scheme, when patient is carried out dialysis treatment, as long as open the non-return sheet by dialysis catheter, dialysis catheter can form channel of blood flow, can guarantee that enough blood flows draw, and uses for dialysis treatment, extract dialysis catheter, the sector-meeting of elasticity non-return sets back automatically, is in closed condition, can prevent that blood from flowing out.When injection anticoagulant in the trocar, as long as open elasticity non-return sheet, i.e. injectable by syringe, automatically set back and extract the sector-meeting of syringe elasticity non-return, be in closed condition, can prevent effectively that blood from flowing out, and can avoid drug wastage, medicine is fully used.Not only cost is low for it, and easy to use.

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings.

Fig. 1 is the front view of the dialysis non-return trocar.

Fig. 2 is the front view of non-return sheet.

Among Fig. 1, Fig. 2, it is one that the casing seat that is made of plastics (1) adopts ultrasonic bonding with union body (3), the elasticity non-return sheet (2) that the useful elastomeric material in the junction of the two is made at them, it is bonded in casing seat (1) by silica gel, by the inlying catheter (4) that polypropylene material is made, the one end inserts in the union body (3) and with silica gel and is bonded as one.

When carrying out arterypuncture, after connect the puncture needle of syringe, can be in opened condition with elasticity non-return sheet (4) jack-up, after puncture needle enters the tremulous pulse blood back, extract syringe, elasticity non-return sheet (4) can set back automatically by the elastic force of self and the pressure of blood flow medium, is in closed condition, prevents that blood from flowing out.Connect the dialysis pipeline again, elasticity non-return sheet (4) jack-up is opened, can form channel of blood flow, just can carry out hemodialysis, behind the dialysis treatment, extract the dialysis pipeline, elasticity non-return sheet (4) can set back, and is in closed condition, prevents that blood from flowing out.Simultaneously, for the trocar can be reused, can after extracting the dialysis pipeline, connect syringe immediately in the time of keeping somewhere, open elasticity non-return sheet (4) again, in the trocar, inject anticoagulant medicaments, in case the hemostasis liquid frozen plug trocar, after having injected, extract syringe again, elasticity non-return sheet (4) will set back automatically, is in closed condition, can prevent that blood from flowing out.In the process of dialysis treatment, can carry out so repeatedly, to reach the purpose of treatment.

Claims

1, a kind of dialysis non-return trocar, comprise inlying catheter and connected union joint, it is characterized in that being provided with an elasticity non-return sheet (2), on the other end of union body (3), be connected with inlying catheter (4) in casing seat (1) and union body (3) connection.