Lightweight biopsy needle

Abstract

The utility model relates to the technical field of medical instruments, and provides a lightweight biopsy needle which comprises a biopsy needle body, a needle seat, a release spring and a handle, an elastic buckle is arranged in the biopsy needle body, the needle seat is arranged in the biopsy needle body, a clamping groove is formed in the biopsy needle body, the rear end of the needle seat abuts against the release spring, and the needle seat can move back and forth in the biopsy needle body. A drag hook is arranged at the front end of the handle and abuts against the rear end of the bottom of the needle base, the handle is pulled to drive the needle base to move backwards, in the backward moving process of the needle base, the compression release spring is meshed with the biopsy needle body elastic buckle and the needle base clamping groove, the handle is pushed forwards, the handle drag hook releases the biopsy needle body elastic buckle to be separated from the needle base clamping groove, and the biopsy needle body is fixed. A traditional biopsy needle is large in size, heavy, incapable of conducting secondary image guiding after puncturing, inaccurate in positioning and incapable of completing puncturing and sampling on some dangerous parts, the weight of the disposable biopsy needle is reduced by 50% through structural optimization, the operation failure risk is remarkably reduced, and the disposable biopsy needle is suitable for being used for medical treatment. Due to the open handle design, the operation efficiency and the operation convenience are improved, and the operation time can be shortened.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a lightweight biopsy needle. Background Technology

[0002] Image-guided percutaneous puncture to the target location of the patient's nodule for cytological biopsy, histological biopsy, cyst aspiration, and treatment is currently the preferred diagnostic and treatment method in clinical practice. Currently, semi-automatic needle products used for biopsies typically employ an inner and outer needle structure. During use, the target area is anchored, and the handle is manually pushed to extend the needle core. The needle tube is automatically released, following the needle core during puncture. By varying the speed of the needle core and the needle tube, a portion of the tissue in the target area is cut and placed in the sample slot at the end of the needle core. This sample is then carried out with the puncture needle for clinical testing. Traditional biopsy needles are large and heavy, cannot be used for secondary image guidance after puncture, and suffer from inaccurate positioning, making it impossible to puncture and sample from dangerous sites, significantly impacting testing accuracy. Furthermore, due to the aforementioned structural design issues, existing products often require multiple samplings, causing significant surgical side effects for patients. Therefore, it is necessary to design a lightweight biopsy needle to address these problems. Utility Model Content

[0003] To reduce the risks of clinical surgery, this lightweight biopsy needle was invented. Compared to traditional biopsy needles, the lightweight biopsy needle is 50% lighter, making clinical procedures more precise and significantly reducing the risk of surgical failure.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a lightweight biopsy needle, including a biopsy needle body, a needle seat, a release spring, and a handle. The biopsy needle body has an elastic buckle inside, and the needle seat is placed inside the biopsy needle body with a groove inside. The rear end of the needle seat abuts against the release spring, and the needle seat can move back and forth inside the biopsy needle body. The front end of the handle has a pull hook that abuts against the rear end of the bottom of the needle seat. Pulling the handle causes the needle seat to move backward. During the backward movement of the needle seat, the release spring is compressed and engages with the elastic buckle of the biopsy needle body and the groove of the needle seat, pushing the handle forward. The pull hook of the handle releases the elastic buckle of the biopsy needle body from the groove of the needle seat, thereby causing the needle seat to be launched forward under the drive of the release spring.

[0005] Preferably, the biopsy needle body has a needle seat inside, the rear end of the needle seat is compressed and abutted by a release spring, and the front end of the handle has a pull hook connected to the needle seat.

[0006] Preferably, the needle holder has a fixed needle tube with a cutting edge inside, which is placed inside the biopsy needle body. The rear end of the needle holder is compressed and abutted by the release spring, and the front end of the handle is provided with a hook connected to the needle holder.

[0007] Preferably, the release spring is placed inside the biopsy needle body, with its front end compressed against the needle hub and its rear end compressed against the biopsy needle body.

[0008] Preferably, the handle has a needle core with a pointed tip fixed inside, which abuts against the rear end of the bottom of the needle holder.

[0009] The beneficial effects of this utility model are:

[0010] Featuring a lightweight design, it reduces weight by 50%. It allows for secondary image guidance with a single needle, tailored to the patient's condition and nodule location, reducing surgical steps, improving puncture stability, and thus significantly lowering the risk of surgical failure while ensuring a high success rate for the puncture procedure.

[0011] The open handle design improves surgical efficiency and ease of operation, and can reduce surgical operation time. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0013] Figure 1 This is a schematic diagram of the biopsy needle described in the needle core of this utility model.

[0014] Figure 2 This is a schematic diagram of the biopsy needle described in the needle tube of this utility model.

[0015] In the diagram: 1. Biopsy needle body; 2. Needle hub; 3. Release spring; 4. Handle. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] Please see Figures 1 to 2As shown, this utility model embodiment provides a lightweight biopsy needle, which includes a biopsy needle body 1, a needle seat 2, a release spring 3, and a handle 4. The biopsy needle body 1 has an elastic buckle inside, and the needle seat 2 is placed inside the biopsy needle body 1 and has a groove inside. The rear end of the needle seat 2 abuts against the release spring 3, and the needle seat 2 can move back and forth inside the biopsy needle body 1. The front end of the handle 4 has a pull hook that abuts against the rear end of the bottom of the needle seat 2. Pulling the handle 4 causes the needle seat 2 to move backward. During the backward movement of the needle seat 2, the release spring 3 is compressed, and the elastic buckle of the biopsy needle body 1 engages with the groove of the needle seat 2. The handle 4 is pushed forward, and the pull hook of the handle 4 releases the elastic buckle of the biopsy needle body 1 from the groove of the needle seat 2, thereby causing the needle seat 2 to be launched forward under the drive of the release spring 3.

[0018] The biopsy needle body 1 has a needle seat 2 inside. The rear end of the needle seat 2 is compressed and abutted against the release spring 3. The front end of the handle 4 has a pull hook that is connected to the needle seat 2.

[0019] The needle holder 2 has a fixed needle tube with a cutting edge inside, which is placed inside the biopsy needle body 1. The rear end of the needle holder 2 is compressed and abutted by the release spring 3, and the front end of the handle 4 is provided with a pull hook connected to the needle holder 2.

[0020] The release spring 3 is located inside the biopsy needle body 1, with its front end compressed against the needle seat 2 and its rear end compressed against the biopsy needle body 1.

[0021] The handle 4 has a needle core with a sharp point fixed inside, which abuts against the bottom rear end of the needle base 2.

[0022] When using the lightweight biopsy device of this invention, the biopsy needle body 1 is operated by holding the biopsy needle body 1 and pulling the handle 4 to link the needle seat 2, which in turn engages and fixes the spring device 3 with the biopsy needle body. The needle seat 2 is then externally wound. The biopsy needle body 1 is then inserted into the target tissue. The spring device 3 and needle seat 2 are released by releasing the handle 4, allowing the elastic tissue to enter the sample groove inside the needle core of the handle 4. The cutting edge at the front of the needle tube of the needle seat 2 cuts the tissue, thus obtaining a full tissue sample. After sampling, the biopsy needle is removed, and the handle 4 is pulled again to link the needle seat 2, which in turn engages and fixes the spring device 3 with the biopsy needle body 1. The needle tube is then moved backward by the needle seat, and the sample groove of the needle core of the handle 4 is fully exposed outside the needle tube of the needle seat 2. The sample is then removed for clinical pathological diagnosis.

[0023] For ease of understanding and description, this utility model uses absolute positional relationships in its description, where the directional term "upper" indicates perpendicular to. Figure 1 The paper surface and the direction pointing outwards from the paper surface; "down" indicates perpendicular to the direction of the paper surface. Figure 1 The paper surface and the direction pointing inwards from the paper surface, "left" indicates Figure 1 The left side of the text, "right" indicates Figure 1The right-hand direction in the middle, "front" indicates Figure 1 The upper direction in the middle, "back" indicates Figure 1 The description is from the perspective of a reader or user, but the above directional terms should not be understood or interpreted as limiting the scope of protection of this utility model.

[0024] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of its implementation. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this utility model patent should still fall within the scope of this patent. Furthermore, the technical features, technical features and technical solutions, and technical solutions in this utility model can be freely combined and used.

Claims

1. A lightweight biopsy needle, comprising a biopsy needle body (1), a needle hub (2), a release spring (3), and a handle (4), characterized in that, The biopsy needle body (1) is provided with an elastic buckle inside. The needle seat (2) is placed inside the biopsy needle body (1) and is provided with a slot inside. The rear end of the needle seat (2) abuts against the release spring (3). The needle seat (2) can move back and forth inside the biopsy needle body (1). The front end of the handle (4) is provided with a hook that abuts against the bottom rear end of the needle seat (2). Pulling the handle (4) will drive the needle seat (2) to move backward. During the backward movement of the needle seat (2), the release spring (3) is compressed and engages with the elastic buckle of the biopsy needle body (1) and the slot of the needle seat (2). The handle (4) is pushed forward. The hook of the handle (4) releases the elastic buckle of the biopsy needle body (1) from the slot of the needle seat (2), thereby causing the needle seat (2) to be launched forward under the drive of the release spring (3).

2. The lightweight biopsy needle according to claim 1, characterized in that, The biopsy needle body (1) has a needle seat (2) inside. The rear end of the needle seat (2) is compressed and abutted by the release spring (3). The front end of the handle (4) is provided with a hook that is connected to the needle seat (2).

3. The lightweight biopsy needle according to claim 1, characterized in that, The needle holder (2) has a fixed needle tube with a cutting edge inside, which is placed inside the biopsy needle body (1). The rear end of the needle holder (2) is compressed and abutted by the release spring (3). The front end of the handle (4) is provided with a hook that is connected to the needle holder (2).

4. The lightweight biopsy needle according to claim 1, characterized in that, The release spring (3) is placed inside the biopsy needle body (1), with its front end compressed against the needle seat (2) and its rear end compressed against the biopsy needle body (1).

5. A lightweight biopsy needle according to claim 1, characterized in that, The handle (4) has a needle core with a sharp point fixed inside, which abuts against the bottom rear end of the needle seat (2).

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