Cylindrical biopsy needle tube

Abstract

The utility model provides a cylindrical biopsy needle tube which comprises an outer needle tube and an inner needle tube, the outer needle tube is cylindrical, the head of the outer needle tube is provided with a sharp cutting edge and is coaxially matched with the inner needle tube, the inner needle tube is cylindrical, the head of the inner needle tube is provided with a sharp needle tip, and the sharp needle tip is used for being matched with a biopsy needle handle to cut tissue samples. The utility model further provides a corresponding use method.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, specifically is a cylindrical biopsy needle needle tube. BACKGROUND

[0002] The device is percutaneously punctured to a target site of a human body under image guidance to realize cytological biopsy, histological biopsy, cyst aspiration and treatment, and is an important disease diagnosis and treatment method. As an important tool for the image-guided puncture biopsy, the puncture needle for biopsy usually adopts an inner-outer needle structure, is percutaneously punctured to a target region, and is used to emit a needle core and a needle tube at one time, the needle tube punctures along the needle core, part of the tissue of the target region is cut by cooperation of the needle core needle head and the needle tube needle head, the sample in the sample groove at the end of the needle core needle head is taken out along with the puncture needle, and is used for clinical pathological diagnosis; the sample groove of the traditional biopsy needle is a plane, the sample is less, the detection accuracy is influenced, and sometimes the sample needs to be punctured and taken several times, the operation risk in the operation and the side effect after the operation are increased. Therefore, it is necessary to design a cylindrical biopsy needle needle tube to increase the sample amount, so as to solve the above problems. SUMMARY

[0003] In order to realize the increase of the clinical sample detection amount, the cylindrical sample groove is particularly invented. Compared with the traditional plane sample groove, the sample amount of the cylindrical sample groove is increased by 30%, the sample amount required for the pathological diagnosis report of the clinical treatment scheme is provided, and the accuracy of the pathological diagnosis is significantly increased.

[0004] The utility model discloses the technical scheme that solves its technical problem is: a cylindrical biopsy needle needle tube, the needle tube includes outer needle tube and inner needle tube, its characterized in that: the outer needle tube is cylindrical, and the head is equipped with sharp cutting edge, and is coaxial with the inner needle tube and cooperates, the inner needle tube is cylindrical, and the head is equipped with sharp needle tip, is used for cooperating biopsy needle handle and realizes cutting tissue sample.

[0005] As preferred, the outer needle tube is coaxially used with the inner needle tube, and is sequentially connected inside the biopsy needle.

[0006] As preferred, the inner needle tube is coaxially used with the outer needle tube, and is sequentially connected inside the biopsy needle.

[0007] The utility model discloses the beneficial effect is

[0008] Compared with the traditional plane sample groove, the sample amount of the cylindrical sample groove is increased by 30%, more and more full samples can be obtained, sufficient sample amount required for pathological diagnosis is ensured, and the accuracy of clinical diagnosis and treatment is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] The drawings accompanying the specification illustrate further aspects of the present application, and together with the description, serve to explain the principles of the present application.

[0010] Figure 1 is a perspective view of the biopsy device of the outer needle tube of the present application.

[0011] Figure 2 is a perspective view of the biopsy device of the inner needle tube of the present application.

[0012] Figure 3 is a perspective view of the sample groove of the inner needle tube of the biopsy needle of the present application.

[0013] Reference signs: 1, outer needle tube; 2, inner needle tube. DETAILED DESCRIPTION

[0014] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the present application belong to the scope of protection of the present application.

[0015] Please refer to Figures 1 to 3 The embodiment of the present application provides a cylindrical biopsy needle tube, and the needle tube comprises an outer needle tube 1 and an inner needle tube 2, characterized in that: the outer needle tube 1 is cylindrical, and a sharp cutting edge is arranged at the head portion of the outer needle tube 1, and the outer needle tube 1 is coaxially matched with the inner needle tube 2; the inner needle tube 2 is cylindrical, and a sharp needle tip is arranged at the head portion of the inner needle tube 2, and the inner needle tube 2 is used for cooperating with a biopsy needle handle to realize cutting of a tissue sample.

[0016] The outer needle tube 1 is made of hard medical-grade stainless steel material, is in a cylindrical tube shape, is coaxially matched with the inner needle tube 2 for use, is sequentially connected to the inside of the biopsy needle, and is provided with a sharp cutting edge at the head portion.

[0017] The inner needle tube 2 is made of hard medical-grade stainless steel material, is in a cylindrical tube shape, is coaxially matched with the outer needle tube 1 for use, is sequentially connected to the inside of the biopsy needle, and is provided with a sharp needle tip at the head portion, and can be directly punctured into the body.

[0018] A sample groove with a length of 19 mm is arranged at the front portion of the inner needle tube 2, the biopsy sample groove is in a cylindrical tube shape, and a cylindrical tissue sample can be obtained.

[0019] In the use of the utility model discloses a cylindrical biopsy needle needle tube, operation cooperation biopsy needle main part, handheld biopsy needle main part and the needle head of inner needle tube 2 is stabbed into target tissue, through the emission inner needle tube 2 and outer needle tube 1 are ejected simultaneously, and the elastic tissue will enter the cylindrical sample groove of inner needle tube 2, and the blade of needle tube 1 front, is responsible for cutting off the tissue, to obtain the tissue sample of cylindrical shape.

[0020] In order to facilitate understanding and description, absolute position relationship is used in the utility model to express, wherein the orientation word "up" indicates the direction perpendicular to the paper and pointing to the outside of the paper, "down" indicates the direction perpendicular to the paper and pointing to the inside of the paper, "left" indicates the left side direction in the paper, "right" indicates the right side direction in the paper, "front" indicates the upper side direction in the paper, and "back" indicates the lower side direction in the paper. Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 The utility model uses the observation visual angle of reader or user to describe, but the above orientation word can not be understood or explained as the limitation of the protection scope of the utility model.

[0021] The above description is only the specific embodiment of the utility model, and can not limit the range of the utility model, so the replacement of equivalent components or equivalent changes and modifications made according to the protection scope of the utility model patent should still belong to the scope covered by the patent.In addition, the technical features in the utility model and the technical features between technical features, technical features and technical scheme, and technical scheme and technical scheme can be used freely.​​​​

Claims

1. A cylindrical biopsy needle cannula comprising an outer needle cannula (1) and an inner needle cannula (2), characterized in that The outer needle tube (1) is cylindrical, and the head thereof is provided with a sharp cutting edge coaxially matched with the inner needle tube (2), the inner needle tube (2) is cylindrical, and the head thereof is provided with a sharp needle tip for matching the biopsy needle handle to realize cutting of the tissue sample.

2. A cylindrical biopsy needle cannula according to claim 1, characterized in that The outer needle tube (1) and the inner needle tube (2) are coaxially matched for use, and are sequentially connected inside the biopsy needle.

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