CN2600065Y

CN2600065Y - Puncture needle for dialysis

Info

Publication number: CN2600065Y
Application number: CN 03214927
Authority: CN
Inventors: 初启江
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-24
Filing date: 2003-01-24
Publication date: 2004-01-21
Anticipated expiration: 2013-01-24

Abstract

The utility discloses a puncture needle for dialysis, which belongs to the medical apparatus. a flexible casing inserted with hollow needles is connected in the front part of the elastic casting body. A pipe cavity is arranged in the back of the casting entity. The casting is connected with the hollow cavity, wherein flexible soft plugs are arranged. The hollow steel needle with side wings at the handle is asserted into the casting through the hollow cavity of the casting and the soft plugs. The point of the needle extrudes form the casting port; between the soft tube and the casting, a dialysis flow pipe which is connected with the casting hole is arranged. On the needle wall of the inserted hollow steel needle, dialysis flow tubes, and observation holes are arranged to see whether the puncture is successful or not. When the hollow steel needle on the pricker and the above castings are inserted into the veins of human bodies at the same time, withdraw the hollow steel needle and the dialysis can be done. In this case, no hard steel needle but soft tube is left in the human veins so the vein walls will not be punctured when people physically rotate or bend. The medical incidents are prevented.

Description

A kind of dialysis puncture needle

Technical field

This utility model belongs to medical apparatus and instruments, especially a kind of dialysis puncture needle.

Background technology

Dialyse at present with puncture needle when doing dialysis, the pin that is retained in internal blood vessel is a steel, because each dialysis is wanted four hours at least,, require patient's limbs to be the relative fixed state therebetween, otherwise when rotation or bending, easily make draw point puncture blood vessel wall, cause malpractice to take place, especially older and long-term dialysis back internal fistula blood vessel becomes tortuous, sclerosis person, the above-mentioned accident of easier generation.

The utility model content

Used draw point is too hard when dialysing for the solution patient, patient's limb activity of long-time dialysis easily punctures the problem of blood vessel, the technical solution of the utility model is: be connected with the flexible sleeve that just can insert hollow steel needle in the front portion of elastic union body, the afterbody of union body is provided with the union body cavity, and sleeve pipe communicates with cavity, is plugged with cork in the union body cavity, needle handle has the hollow steel needle of flank through the union body cavity, pass cork, insert sleeve pipe, the mouth of pipe is exposed at its tip; Between cork and sleeve pipe, be connected with the dialysis runner pipe that communicates with collar aperture.

The flow of blood on sleeve pipe front end tube wall, can have a plurality of not open-works on same cross section when dialysing in order to strengthen.

During use, the hollow steel needle on the puncture needle of above-mentioned band dialysis runner pipe is inserted people's extremity vascular, the sleeve pipe on it also inserts blood vessel simultaneously, extracts hollow steel needle out, and with the shutoff of sleeve pipe cavity, dialysis can be carried out.Like this, stay in the blood vessel of people's limbs and do not had only flexible pipe with regard to there being hard draw point, people's limbs have been avoided the generation of malpractice rotating or when crooked, just can not puncturing blood vessel wall.

Description of drawings

Fig. 1 is a front view of the present utility model;

Fig. 2 is after taking out draw point among Fig. 1, the part sectioned view during the closed tube cavity.

The specific embodiment

Among Fig. 1,, be connected with the flexible sleeve 2 that just can insert hollow steel needle 1 in the front portion of elastic union body 3, the afterbody of union body 3 is provided with body cavity 9, and sleeve pipe 2 communicates with cavity, is plugged with elasticity cork 4 in the body cavity 9, so that when extracting draw point, but pin hole auto-closing; The hollow steel needle 1 that has flank 10 on the needle handle 6 passes cork 4 through body cavity 9, inserts sleeve pipe 2, and the mouth of pipe is exposed at its tip; Between cork 4 and sleeve pipe 2, be connected with the dialysis runner pipe 5 that communicates with the hole of sleeve pipe 2.

In order to strengthen blood flow, on the tube wall of sleeve pipe 2 front ends, have a plurality of not open-works on same cross section 7

Whether insert blood vessel for the ease of observing dialysis needle, union body 3 can be made with transparent material, and at sleeve pipe 2 place that communicates with dialysis runner pipe 5, but is provided with the dialyse observation port 8 of runner pipe 5 of subtend on the pin wall of the hollow steel needle 1 of insertion.

Among Fig. 2, after hollow steel needle 1 was extracted, the afterbody of union body 3 can be provided with outer rib-loop, with sieve medicated cap 10 shutoff body cavitys 9.

Claims

1, a kind of dialysis puncture needle, comprise hollow steel needle (1) and the dialysis runner pipe (5) that communicates with it, it is characterized in that: front portion in elastic union body (3), be connected with the flexible sleeve (2) that just can insert hollow steel needle (1), the afterbody of union body (3) is provided with body cavity (9), sleeve pipe (2) communicates with cavity, be plugged with elasticity cork (4) in the cavity of union body (3), needle handle (6) is gone up the cavity of the hollow steel needle (1) of band flank (10) through union body (3), pass cork (4), insert sleeve pipe (3), the mouth of pipe is exposed at its tip; Between cork (4) and sleeve pipe (2), be connected with the dialysis runner pipe (5) that communicates with the pore of sleeve pipe (2).

2, a kind of dialysis puncture needle as claimed in claim 1 is characterized in that: on the tube wall of sleeve pipe (2) front end, have a plurality of not open-works on same cross section (7).

3, a kind of dialysis puncture needle as claimed in claim 1 or 2, it is characterized in that: the available transparent material of union body (3) is made, and at sleeve pipe (2) and dialysis runner pipe (5) place that communicates, at the hollow steel needle (1) that inserts but the pin wall on be provided with the dialyse observation port (8) of runner pipe (5) of subtend.