CN2790495Y

CN2790495Y - Cavity-tract syringe

Info

Publication number: CN2790495Y
Application number: CN 200520055642
Authority: CN
Inventors: 倪明
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-16
Filing date: 2005-03-16
Publication date: 2006-06-28
Anticipated expiration: 2015-03-16

Abstract

The utility model provides a cavity tract syringe which comprises a cavity tract conductive body and an injection needle cylinder with a puncture needle, wherein at least one guide channel is arranged inside the cavity tract conductive body. An inlet of each guide channel is positioned on one end surface of the cavity tract conductive body, and an outlet of each guide channel is arranged on the side surface of the cavity tract conductive body. The puncture needle is arranged inside the guide channels, wherein a guiding pipe of the injection needle cylinder is arranged on the cavity tract conductive body at one side of the inlet of the guide channel, an inner guide sleeve which can slide along the guide pipe is arranged inside the guide pipe and the inner diameter of the inner guide sleeve is smaller than the outer diameter of the injection needle cylinder. A return spring is arranged between the guide pipe and the inner guide sleeve. The outer wall of the guide pipe is provided with a handle. The utility model has the advantages of safety, convenience and accurate puncturing depth and is used for the cavity tract injection treatment of prostate lesions.

Description

A kind of tract syringe

Technical field

This utility model relates to a kind of medical supplies, is meant that especially being used for prostatic lesion treats a kind of tract syringe.

Background technology

Can only on body surface, inject at ordinary syringe, can not directly in tract, inject, need pass the multilamellar tissue, in piercing process, be easy to generate other people soma is caused the big deficiency of damage.For solving the problems of the technologies described above, the application's designer has proposed the patent application of " tract syringe " by name, and obtain Chinese patent mandate (patent No. ZL02227518.5, April 9 2003 Granted publication day), by clinical practice, the designer finds that in use this tract syringe is after injection is finished, medical personnel forget sometimes extract syringe needle and the mistake tract syringe is all pulled out, have hidden danger safe in utilization.Simultaneously, the paracentesis depth during injection is not easy control.At above-mentioned deficiency, the designer is further perfect to the tract syringe, has proposed a kind of new Technological improvement plan.

The utility model content

The purpose of this utility model is to provide that a kind of use is safer, convenient, a kind of accurately tract syringe of paracentesis depth.

The purpose of this utility model is achieved in that a kind of tract syringe, the syringe cylinder that comprises tract conductor and band puncture needle, in the tract conductor, be provided with at least one guide channel, the inlet of guide channel is positioned at an end face of tract conductor, its outlet is arranged on the side of tract conductor, puncture needle is established and is placed in the guide channel, wherein: on the tract conductor of guide channel inlet side, be provided with the syringe cylinder guide pipe, being provided with in guide pipe can be along the interior guide thimble of its slip, and the internal diameter of interior guide thimble is less than the external diameter of syringe cylinder; Between guide pipe and interior guide thimble, be provided with return spring; Be provided with handle at the guide pipe outer wall.

The further improvement project of this utility model is: can also between described tract conductor and guide pipe pipe connections be set, all be threaded between pipe connections and tract conductor, the guide pipe, the tract conductor is provided with indicating graduation at nearly pipe connections outer surface on one side, one side pipe connections is at the pointer that is provided with of nearly tract conductor; Can make things convenient for medical personnel suitably to adjust paracentesis depth like this.

After this utility model adopts said structure, medical personnel need compression retracteding position spring could realize injection in use, after the injection, need not pull out pin, under the elastic force effect of return spring, piercing needle is extracted automatically, can prevent security incident effectively like this, makes the use of tract syringe convenient, safety; After further improving, paracentesis depth can also suitably be adjusted, to reach better therapeutic effect.

Description of drawings

Below in conjunction with accompanying drawing this utility model is described in further detail, but does not constitute any restriction of the present utility model.

Fig. 1 is the structural representation of a kind of specific embodiments of this utility model;

Fig. 2 is that the A of Fig. 1 is to partial view.

The specific embodiment

Extremely shown in Figure 2 as Fig. 1, a kind of tract syringe of the present utility model, the syringe cylinder 7 that comprises tract conductor 1 and band puncture needle 2, in tract conductor 1, be provided with a guide channel 11, the inlet of guide channel 11 is positioned at an end face of tract conductor 1, its outlet is arranged on the side of tract conductor 1, puncture needle 2 is established and is placed in the guide channel 11, on the tract conductor 1 of guide channel 11 inlet sides, be provided with threaded joints 13, threaded joints 13 is threaded with pipe connections 6, pipe connections 6 is threaded with syringe cylinder guide pipe 3, and being provided with in guide pipe 3 can be along the interior guide thimble 4 of its slip, and the internal diameter of interior guide thimble 4 is less than the external diameter of syringe cylinder 7; Between guide pipe 3 and interior guide thimble 4, be provided with return spring 5; Be provided with handle 31 at guide pipe 3 outer walls.Pipe connections 6 is provided with indicating graduation 12 at tract conductor 1 at nearly pipe connections 6 threaded joints 13 outer surfaces on one side, one side by roll tube connector 6, can suitably be adjusted the paracentesis depth of puncture needle 2 at the circle tubulose pointer 61 that is provided with of nearly tract conductor 1.

Claims

1. tract syringe, the syringe cylinder (7) that comprises tract conductor (1) and band puncture needle (2), in tract conductor (1), be provided with at least one guide channel (11), the inlet of guide channel (11) is positioned at an end face of tract conductor (1), its outlet is arranged on the side of tract conductor (1), puncture needle (2) is established and is placed in the guide channel (11), it is characterized in that: on the tract conductor (1) of guide channel (11) inlet side, be provided with syringe cylinder guide pipe (3), being provided with in guide pipe (3) can be along the interior guide thimble (4) of its slip, and the internal diameter of interior guide thimble (4) is less than the external diameter of syringe cylinder (7); Between guide pipe (3) and interior guide thimble (4), be provided with return spring (5); Be provided with handle (31) at guide pipe (3) outer wall.

2. a kind of tract syringe according to claim 1, it is characterized in that: be provided with pipe connections (6) between described tract conductor (1) and the guide pipe (3), pipe connections (6) all is threaded between (3) with tract conductor (1), guide pipe, tract conductor (1) is provided with indicating graduation (12) at nearly pipe connections (6) outer surface on one side, pipe connections (6) at nearly tract conductor (1) one side be provided with pointer (61).