CN2188928Y

CN2188928Y - Puncturing needle

Info

Publication number: CN2188928Y
Application number: CN 93235203
Authority: CN
Inventors: 陈道瑾; 舒畅; 文继舫; 颜亚辉
Original assignee: XIANGYA HOSPITAL ATTACHED TO H
Current assignee: XIANGYA HOSPITAL ATTACHED TO H
Priority date: 1993-12-11
Filing date: 1993-12-11
Publication date: 1995-02-08
Anticipated expiration: 2003-12-11

Abstract

The utility model relates to a dicaryon puncturing needle, which is composed of a needle tube, a negative pressure core, etc. The end surface of the needle head of the needle tube is of an incline surface; the position of the needle head is provided with a hook groove; a needle core is cooperated with the needle tube. The puncturing needle of the utility model can exactly efficiently take required tissues and can avoid carrying in normal tissues when the needle is inserted. The utility model enhances the success ratio of puncturing biopsy, takes more biopsy tissues, can carry out the examination of pathological cutting sheets and enhances sensitivity and specificity.

Description

Puncturing needle

This utility model relates to a kind of medical apparatus, belongs to the Puncturing needle that pathological biopsy is used.

When the doctor diagnoses patient, for clear and definite pathological diagnosis, often need to organize the sampling of a certain position to make biopsy usefulness at patient body, Puncturing needle is the most frequently used sampling appliance.Comparatively advanced both at home and abroad at present puncture needle is with a staight needle pipe, and being punctured to needs sampling point, inserts a negative pressure heart, bleeds with syringe and carries out the negative pressure sampling.Because syringe needle is straight and smooth, each sampling is not absolute reliable, when primary sample is unsuccessful, need repeatedly carry out sampling operation, causes patient's misery.

The purpose of this utility model is to provide a kind of needle section bit strip that the Puncturing needle that colludes groove is arranged.

Utility model is achieved in that the syringe needle end face of needle tubing is the inclined-plane, and a hook groove is arranged at the syringe needle position, and a pin heart has matched with needle tubing.

Introduce structure of the present utility model and using method in detail below in conjunction with accompanying drawing.

Fig. 1 is the front view of needle tubing in the utility model;

Fig. 2 is the front view of the pin heart in the utility model;

Fig. 3 is the front view of the negative pressure heart in the utility model.

With reference to accompanying drawing, the needle tubing of puncture needle ［ 1 ］, its syringe needle ［ 3 ］ microbend, end face is inclined-plane ［ 4 ］, makes needle point be 45.Collude groove ［ 2 ］ in 1 centimeter at the syringe needle position, collude groove and be barb-type.Insert the pin heart ［ 5 ］ in the needle tubing, the flexibility and the needle tubing of its syringe needle ［ 6 ］ match.The negative pressure heart ［ 7 ］ is a straight-bar that can insert in the needle tubing, has a bossing to prevent to fall in needle tubing on the bar.The syringe needle of the needle tubing and the pin heart also can be straight.

During use, earlier the pin heart is inserted needle tubing, connect syringe.With this needle tubing puncture tissue, there is the pin heart to stop, bring normal structure in pipe in the time of avoiding inserting needle.When syringe needle reaches when needing sampling point, the pin heart is taken out, change the negative pressure heart, the negative pressure heart is short than needle tubing, makes the needle section of needle tubing certain space be arranged in being in charge of.Utilize syringe to bleed to cause negative pressure, rotate and spur needle tubing back and forth, utilize needle slope and hook groove to extract biopsy, the suction function of needle tubing, sampling rate height when needle tubing is extracted out.Stopping of the negative pressure heart, avoid biopsy when negative pressure, to enter the needle tubing upper end.

Puncture needle of the present utility model can be taked required tissue accurately and effectively, brings normal structure in the time of avoiding inserting needle again into, has improved the aspiration biopsy success rate greatly, takes biopsy many, can do the pathology cut sections for microscopic examination, has improved sensitivity and specificity.

Claims

1, a kind of Puncturing needle is made up of needle tubing, the negative pressure heart, it is characterized in that: syringe needle [3] end face of needle tubing [1] is the inclined-plane, and a hook groove [2] is arranged at the syringe needle position, and a pin heart [5] has matched with needle tubing.

2, Puncturing needle according to claim 1 is characterized in that hook groove ［ 2 ］ is barb-type.

3,, it is characterized in that the syringe needle microbend of the needle tubing ［ 1 ］ and the pin heart ［ 5 ］ according to claim 1,2 described Puncturing needles.