CN201814600U

CN201814600U - Medical biopsy tool

Info

Publication number: CN201814600U
Application number: CN201020573254XU
Authority: CN
Inventors: 顾洪生
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-21
Filing date: 2010-10-21
Publication date: 2011-05-04
Anticipated expiration: 2020-10-21

Abstract

A medical biopsy tool comprises a handle body and a biopsy device, wherein the handle body is connected with the biopsy device; the biopsy device comprises an internal guide pin and a biopsy cutting trephine; the biopsy cutting trephine adopts a hollow columnar body; a notch is formed in the middle of the biopsy cutting trephine; a cutter is arranged in the notch; the rear end of the biopsy cutting trephine is connected with the handle body; and the external diameter of the internal guide pin is matched with the inner diameter of the biopsy cutting trephine. When the medical biopsy tool is used, the internal guide pin penetrates through bone tissue, the pinpoint of the internal guide pin reaches bone tumor tissue, after the biopsy cutting trephine is placed in the tissue along the internal guide pin, the internal guide pin is pulled out, the biopsy cutting trephine is rotated, the tumor tissue is cut off by a cutter arranged on the lateral side of the biopsy cutting trephine, and the cut tissue in the cutting trephine are withdrew together with the cutting trephine. The utility model aims to solve the technical problem of providing a biopsy tool with simple structure, convenience in operation, and small wound, so as to solve difficulties in bone tumor biopsy.

Description

A kind of medical biopsy instrument

Technical field

This utility model relates to technical field of medical instruments, more particularly, relates to the biopsy instrument of using in a kind of medical act.

Background technology

In recent years, the sickness rate of tumor is more and more higher, and malignant tumor has the higher bone rate of transform, and many spinal column metastatic tumors also all can not find primary tumor by present noninvasive test means.Yet to the diagnosis of tumor with differentiate extremely importantly, getting pathological biopsy is the goldstandard of diagnosis, and the histological type of tumor also directly determines tumor treatment and prognosis.

Yet, conventional biopsy needle is all thinner, can be used in the biopsy of soft tissues such as liver, kidney, lungs, prostate, mammary gland, but bone tumor is present in the bone sex organization, there is osseous tissue to hold on every side, some bone tumor also often sexually revises with skeletonization, and conventional biopsy needle is strong inadequately, also can't pass the position that osseous tissue reaches bone tumor, also can't obtain enough bone tumor tissues.

The utility model content

It is a kind of simple in structure, easy to operate that technical problem to be solved in the utility model is to provide, and the biopsy instrument that wound is little is to solve the difficulty that runs in the bone tumor biopsy.

This utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be:

A kind of medical biopsy instrument, its bag handle body and biopsy device, described handle body is connected with described biopsy device, guide pin and biopsy cutting trepan in described biopsy device comprises, described biopsy cutting trepan is the column of interior sky, and there is recess at described biopsy cutting trepan middle part, and described recess has cutter, described biopsy cut ring drill rear end is connected with described handle body, and described interior guide pin external diameter cooperates with described biopsy cutting trepan internal diameter.

Described biopsy cutting trepan front end is a saw-tooth ring.

During use, earlier drilled bone sex organization together with the biopsy cut ring by interior guide pin, after the needle point of guide pin arrives the bone tumor tissue, extract interior guide pin, rotation biopsy cutting trepan, the bone tumor tissue gos deep into by the trepan cutting open circuit of front in the bone sex organization in the place ahead, and tumor tissues cuts by the cutter of biopsy cutting trepan side, and being organized in the cutting trepan of cutting-out taken out in the lump.

The tissue that takes out under the biopsy cutting trepan inscribe can adopt modes such as syringe extraction.

Description of drawings

Fig. 1 is guide pin and a biopsy cutting trepan combination sketch map in this utility model embodiment;

Fig. 2 is a guide pin sketch map in this utility model embodiment.

Wherein: 1. guide pin in, 2. biopsy cutting trepan, 3. saw-tooth ring, 4. recess, 5. cutter.

The specific embodiment

With embodiment this utility model is described in further detail with reference to the accompanying drawings below:

As shown in the figure: a kind of medical biopsy instrument, its bag handle body and biopsy device, described handle body is connected with described biopsy device, guide pin 1 and biopsy cutting trepan 2 in described biopsy device comprises, described biopsy cutting trepan 2 is the column of interior sky, and there is recess 4 at described biopsy cutting trepan 2 middle parts, and described recess 4 has cutter 5, described biopsy cutting trepan 2 rear ends are connected with described handle body, and described interior guide pin 1 external diameter cooperates with described biopsy cutting trepan 2 internal diameters.

Described biopsy cutting trepan 2 front ends are saw-tooth ring 3.

During use, earlier pass bone sex organization by interior guide pin 1, the needle point of interior guide pin 1 arrives the bone tumor tissue, after inserting biopsy cutting trepan 2 along interior guide pin 1, guide pin 1 in extracting, rotation biopsy cutting trepan 2, the bone sex organization in the place ahead severs the road by the saw-tooth ring 3 of front and gos deep into the bone tumor tissue, tumor tissues cuts by the cutter 5 of biopsy cutting trepan 2 sides, and being organized in the cutting trepan of cutting-out taken out in the lump.

It is a kind of simple in structure, easy to operate that present embodiment provides, and the biopsy instrument that wound is little is to solve the difficulty that runs in the bone tumor biopsy.

Those skilled in the art do not break away from essence of the present utility model and spirit, can there be the various deformation scheme to realize this utility model, the above only is the preferable feasible embodiment of this utility model, be not so limit to interest field of the present utility model, the equivalent structure that all utilization this utility model description and accompanying drawing content are done changes, and all is contained within the interest field of the present utility model.

Claims

1. medical biopsy instrument, it comprises handle body and biopsy device, described handle body is connected with described biopsy device, it is characterized in that: guide pin and biopsy cutting trepan in described biopsy device comprises, described biopsy cutting trepan is the column of interior sky, and there is recess at described biopsy cutting trepan middle part, and described recess has cutter, described biopsy cut ring drill rear end is connected with described handle body, and described interior guide pin external diameter cooperates with described biopsy cutting trepan internal diameter.

2. a kind of medical biopsy instrument according to claim 1 is characterized in that: described biopsy cutting trepan front end is a saw-tooth ring.