CN2551184Y

CN2551184Y - Negative pressure suction tissue-cutting biopsy needle

Info

Publication number: CN2551184Y
Application number: CN 02267880
Authority: CN
Inventors: 刘建民; 刘建军; 沈新洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-26
Filing date: 2002-06-26
Publication date: 2003-05-21
Anticipated expiration: 2012-06-26

Abstract

The utility model relates to a biopsy tissue collector, comprising an outer needle 5. The utility model is characterized in that a needle point is arranged at the front end and a needle seat 4 is arranged at the rear end of the outer needle 5, the outer needle is a blind tube with a side hole 7 at the front end; a core needle 6 is arranged in the blind hole of the outer needle; an inner side hole 8 is also arranged on the lateral face at the front end of the core needle and corresponding part of the side hole 7; a core needle seat 2 is arranged at the rear end of the core needle; a cylinder at the front end of the core needle seat is connected with a round hole of the needle seat 4, and a via hole 1 at the rear end of the core needle seat is connected with a negative pressure source. The utility model has the advantages of simple structure, convenient operation, precise cutting of the tissue of pathological change and less impairment to patient.

Description

Vacuum suction cuts and organizes biopsy needle

This utility model belongs to a kind of medical apparatus and instruments, specifically a kind of device that obtains biopsy from human body.

In the diagnoses and treatment process of disease, in order to find the cause of disease exactly, often focus is carried out biopsy, that is: from focus, obtain a certain amount of biological tissue with medical apparatus and carry out pathological analysis, determine disease character, so that take preferred plan to treat.At present, the most frequently used biopsy instrument is the hook-type pin.During use, the hook-type pin is penetrated into lesions position, then it is extracted out, the crotch of its leading section just can go out the portion of tissue hook in the focus.Though this biopsy instrument uses for many years, result of use is not ideal enough, and organizing that just crotch partly takes out often is not lesion tissue.In order to address the above problem, the medical personnel improves traditional biopsy instrument, has obtained certain effect though it improves structure,, also exist such and such problem in the application, they are not complex structures, are exactly not easy to operate.

It is a kind of simple in structure, easy to operate that the purpose of this utility model is to provide, and it is accurate to cut lesion tissue, and the aspiration biopsy pin little to patient trauma.

This utility model is to realize like this, it comprises that a front end has the outer pin that needle point, rear end have needle stand, outer pin is a blind hole pipe, leading section has side opening, and a hollow pin is housed in the blind hole of pin outside, and the leading section side of this hollow pin also has an inboard aperture with outer pin side opening corresponding position, the rear end of hollow pin also has the hollow needle stand, the hollow needle stand is a step, and the cylinder of front end is connected with the circular hole of needle stand, and the rear end connecting hole and the negative pressure source of hollow needle stand are connected to form.

Because this utility model is the device of the incisional biopsy tissue that is connected to form with two sleeve structures and negative pressure source, during use, this puncture needle is inserted into lesions position, pass through negative pressure, the part lesion tissue is sucked the hollow pin, through rotation hollow pin or outside pull hollow pin, all the lesion tissue that sucks in the hollow pin can be cut away, taken out then.Can also cut the lesion tissue of different directions by rotation hollow pin.This biopsy needle is specially adapted to the aspiration biopsy of lung tumors.Of the present utility model simple in structure, operation is very easy, also smaller to patient's damage, be suitable for hospitals at different levels and use.

Fig. 1 is a structure principle chart of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 1.

Below in conjunction with accompanying drawing this utility model is elaborated.

Outer pin 5 of the present utility model is that a front end has the blind hole pipe that needle point, rear end have needle stand 4, the leading section of outer pin 5 has side opening 7, a hollow pin 6 is housed in the pin hole outside, the leading section side of this hollow pin 6 also has an inboard aperture 8 with outer pin side opening corresponding position, the rear end of hollow pin 6 also has hollow needle stand 2, hollow needle stand 2 is a step, and the cylinder of front end is connected with the circular hole of needle stand 4, and the rear end connecting hole 1 of hollow needle stand 2 is connected with negative pressure source.For the side opening 7 that makes outer pin 5 front ends is accurately corresponding with the inboard aperture 8 of hollow pin 6 front ends, have an alignment pin 3 in the junction of needle stand 4 and hollow needle stand 2.For the ease of operation, have lever 9 in the side of hollow needle stand 2, the side of needle stand 4 has main operation handle 10 and constitutes.With reference to accompanying drawing 3, for the ease of the cutting biological tissue, the inboard aperture 8 of the side opening 7 of outer pin 5 front ends and hollow pin 6 front ends has blade.

Claims

1, vacuum suction cuts and organizes biopsy needle, it comprises that a front end has needle point, the rear end has the outer pin (5) of needle stand (4), it is characterized in that: outer pin (5) is a blind hole pipe, leading section has side opening (7), in the blind hole of pin (5) a hollow pin (6) is housed outside, the leading section side of this hollow pin (6) also has an inboard aperture (8) with outer pin side opening (7) corresponding position, the rear end of hollow pin (6) also has hollow needle stand (2), hollow needle stand (2) is a step, the cylinder of front end is connected with the circular hole of needle stand (4), and the rear end connecting hole (1) of hollow needle stand (2) is connected to form with negative pressure source.

2, vacuum suction according to claim 1 cuts and organizes biopsy needle, it is characterized in that: the junction at needle stand (4) and hollow needle stand (2) has an alignment pin (3).

3, vacuum suction according to claim 1 cuts and organizes biopsy needle, it is characterized in that: have main operation handle (10) in the side of needle stand (4); Have lever (9) constitutes in the side of hollow needle stand (2).

4, cut and organize biopsy needle according to claim 1 or 2 or 3 described vacuum suctions, it is characterized in that: side opening (7) edge of the leading section inboard aperture (8) of hollow pin (6) and outer pin (5) has blade.