Puncture needle for lymph node biopsy puncture

Abstract

The utility model relates to the field of puncture needles, and discloses a puncture needle for lymph node biopsy puncture, which comprises a main body, a needle head is arranged at the bottom end of the main body, a cutting sleeve is arranged at the bottom end of the main body close to the outer wall of the needle head, a guide groove is arranged at the front end of the main body, a protection component is arranged on the inner wall of the guide groove, and the protection component comprises a sliding rod. The outer wall of the sliding rod is slidably connected to the inner wall of the guide groove, the top end of the sliding rod is rotatably connected with a pull rod, limiting teeth are arranged on the sliding rod close to the inner wall of the pull rod and meshed with the inner wall of the pull rod, and a gasket is arranged on the sliding rod close to the top end of the pull rod. According to the puncture needle, through matched use of the guide groove and the protection assembly, after the puncture needle is used, medical staff can quickly slide the sliding rod out of the inner wall of the main body, so that the sleeve can be tightly attached to the needle head, and the needle head is effectively prevented from being exposed and the possible puncture risk is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the field of puncture needles, in particular to a puncture needle for lymph node biopsy puncture. Background Art

[0002] Lymph nodes are important immune organs in the human body, and changes in their status can often reflect certain diseases in the body. When lymph nodes are infected by bacteria, viruses, etc., or invaded by tumor cells, they may become swollen. Therefore, by biopsy of the swollen lymph node tissue, doctors can more accurately determine the cause of the disease and provide important basis for subsequent treatment.

[0003] After the lymph node puncture biopsy is completed, the used puncture needle will be regarded as medical waste and needs to be handled in accordance with the specifications of medical waste disposal. The existing puncture needles lack a discarding device for the needles. Medical staff may directly touch the needles when handling these puncture needles, thereby increasing the risk of cross infection. Therefore, a puncture needle for lymph node biopsy is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a puncture needle for lymph node biopsy, aiming to improve the problem in the prior art that "the puncture needle lacks a discarding device for the needle head, which has certain safety risks".

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a puncture needle for lymph node biopsy, comprising a main body, a needle is arranged at the bottom end of the main body, a cutting sleeve is arranged at the bottom end of the main body near the outer wall of the needle, a guide groove is opened at the front end of the main body, a protective component is arranged on the inner wall of the guide groove, the protective component comprises a sliding rod, the outer wall of the sliding rod is slidably connected to the inner wall of the guide groove, the top end of the sliding rod is rotatably connected to a pull rod, and the sliding rod is provided with limiting teeth near the inner wall of the pull rod.

[0006] As a further description of the above technical solution:

[0007] The limiting teeth are meshed with the inner wall of the pull rod, and a gasket is arranged on the sliding rod near the top end of the pull rod.

[0008] As a further description of the above technical solution:

[0009] One end of a compression spring is fixedly connected to the top end of the gasket, and the other end of the compression spring is fixedly connected to the outer wall of the slide rod.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the bottom end of the slide rod is fixedly connected with a sleeve, and the outer wall of the sleeve slides on the inner wall of the main body.

[0012] As a further description of the above technical solution:

[0013] A limiting block is fixedly connected to the inner wall of the main body near the front side of the pull rod, and a sliding groove is provided on the inner wall of the right side of the guide groove near the front side of the main body.

[0014] As a further description of the above technical solution:

[0015] The front inner wall of the slide groove is slidably connected to a limiting block, the front inner wall of the limiting block is elastically connected to the main body via a return spring, and the bottom end of the limiting block is arranged as a curved surface.

[0016] As a further description of the above technical solution:

[0017] The upper side of the limit block is arranged as a cambered surface.

[0018] As a further description of the above technical solution:

[0019] The right side of the pull rod is arranged in a spherical shape.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by using the guide groove and the protective assembly in coordination, after the puncture needle is used, the medical staff can quickly slide the slide rod out of the inner wall of the main body, so that the sleeve can fit tightly on the needle, thereby effectively preventing the exposure of the needle and the possible risk of puncture.

[0022] 2. In the present invention, the limiting component is used in conjunction with the protective component. The limiting component is used to accurately position and fix the slide rod and the sleeve. By working in conjunction with the protective component, the limiting component can prevent the sleeve from accidentally detaching from the needle due to external force or other factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the overall device in the utility model;

[0024] Figure 2 It is a schematic diagram of the expanded three-dimensional structure of the overall device in the utility model;

[0025] Figure 3 It is a partial cross-sectional schematic diagram of the front three-dimensional structure of the main body of the utility model;

[0026] Figure 4 It is a schematic diagram of the split three-dimensional structure of the pull rod and the slide rod in the utility model;

[0027] Figure 5 It is a top view of the three-dimensional structure section diagram of the main body of the utility model.

[0028] Legend:

[0029] 1. Main body; 2. Needle; 3. Cutting sleeve; 4. Guide groove; 51. Slide rod; 52. Pull rod; 53. Gasket; 54. Compression spring; 55. Limiting tooth; 56. Sleeve; 6. Limiting block; 71. Limiting block; 72. Reset spring; 8. Slide groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 and Figure 2 The utility model provides an embodiment: a puncture needle for lymph node biopsy, including a main body 1, a needle 2 is arranged at the bottom end of the main body 1, and a cutting sleeve 3 is arranged at the bottom end of the main body 1 near the outer wall of the needle 2. The main body 1, the needle 2, and the cutting sleeve 3 are existing structures and can be implemented by technicians in this field. Since it is an existing technology, it will not be described in detail in this case. A guide groove 4 is opened at the front end of the main body 1 for guiding and limiting the pull rod 52 and the slide rod 51, improving the stability of the slide rod 51, and guiding A protective component is provided on the inner wall of the guide groove 4, and the protective component includes a slide bar 51. The outer wall of the slide bar 51 is slidably connected to the inner wall of the guide groove 4. The slide bar 51 is used to connect the pull rod 52 and the sleeve 56, and can easily drive the sleeve 56 to move accordingly, so that medical personnel can easily control the position of the sleeve 56, thereby achieving effective socketing of the needle 2, effectively preventing the exposure of the needle 2 and the possible risk of stabbing. The top end of the slide bar 51 is rotatably connected to the pull rod 52, and the slide bar 51 is provided with a limiting tooth 55 near the inner wall of the pull rod 52.

[0032] Reference Figure 3 and Figure 4The limiting tooth 55 is meshed with the inner wall of the pull rod 52. The limiting tooth 55 is meshed with the pull rod 52, so that when the pull rod 52 rotates counterclockwise at the bottom of the guide groove 4, it can drive the slide bar 51 to rotate 90 degrees, so that the sleeve 56 is aligned with the needle 2. The slide bar 51 is provided with a gasket 53 near the top of the pull rod 52. The top of the gasket 53 is fixedly connected to one end of a compression spring 54. The other end of the compression spring 54 is fixedly connected to the outer wall of the slide bar 51. The elastic force of the compression spring 54 makes the pull rod 52 close to the limiting tooth 55 outer wall, and when the pull rod 52 rotates clockwise, the pull rod 52 can slide over the outer wall of the limiting tooth 55 without driving the slide bar 51 to rotate. The outer wall of the bottom end of the slide bar 51 is fixedly connected with a sleeve 56 for shielding the needle 2, which not only prevents accidental punctures by the needle 2 and reduces the risk of infection, but also ensures safety. The outer wall of the sleeve 56 slides on the inner wall of the main body 1, and the right side of the pull rod 52 is set to a spherical shape. When in use, medical staff can more easily hold and operate the pull rod 52, which increases comfort.

[0033] Reference Figure 3 and Figure 5 The limit block 71 is fixedly connected to the inner wall of the main body 1 near the front side of the pull rod 52, which is used to prevent the pull rod 52 from disengaging from the guide groove 4 and increase the stability of the device. A sliding groove 8 is opened on the inner wall on the right side of the guide groove 4 on the front side of the main body 1, which is used to guide and limit the pull rod 52. The inner wall of the front side of the sliding groove 8 is slidably connected to the limit block 71, and the inner wall of the front side of the limit block 71 is elastically connected to the main body 1 through a return spring 72. The bottom end of the limit block 71 is set as a curved surface, and the upper side of the limit block 71 is set as an arc surface. The curved surface of the bottom end of the limit block 71 is squeezed by the pull rod 52 to make the limit block 71 slide toward the inner wall of the main body 1, so that the pull rod 52 slides into the inside of the sliding groove 8, and then the limit block 71 is pushed back to its original position by the elastic force of the return spring 72, so as to limit the pull rod 52. The movement of the pull rod 52 is effectively limited by the arc surface on the upper side of the limit block 71, thereby preventing the sleeve 56 from accidentally disengaging from the needle 2 due to external force or other factors.

[0034] Working principle: During use, after the puncture needle is used up, the pull rod 52 is first rotated toward the front side and slides through the top of the limiting block 6 to release the limitation on the pull rod 52. At this time, the limiting teeth 55 arranged on the slide rod 51 slide on the inner wall of the pull rod 52, driving the slide rod 51 to squeeze the compression spring 54. At the same time, the gasket 53 rotates at the top of the pull rod 52. At this time, the pull rod 52 is rotated to the left inner wall of the guide groove 4, and then the pull rod 52 is pulled downward, so that the pull rod 52 drives the slide rod 51 to slide on the inner wall of the guide groove 4, thereby moving the slide rod 51 and the sleeve 56 out of the main body 1.

[0035] Move the pull rod 52 to the bottom of the guide groove 4, then rotate the pull rod 52, engage the limit tooth 55 with the pull rod 52, drive the slide rod 51 to rotate, align the center of the sleeve 56 with the needle 2, and then move the pull rod 52 upward and slide into the inner wall of the slide groove 8, so that the needle 2 slides into the inner wall of the sleeve 56. At this time, pull the pull rod 52 upward with force to squeeze the bottom curved surface of the limit block 71.

[0036] The limit block 71 squeezes the return spring 72 and slides into the inner wall of the main body 1, thereby moving the pull rod 52 upward. The limit block 71 is then slid out of the inner wall of the main body 1 by the elastic force of the return spring 72, and the pull rod 52 is limited by the upper arc surface of the limit block 71, so that the pull rod 52 cannot move, thereby locking the pull rod 52.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A puncture needle for lymph node biopsy, comprising a main body (1), characterized in that: A needle (2) is arranged at the bottom end of the main body (1), and a cutting sleeve (3) is arranged near the outer wall of the needle (2) at the bottom end of the main body (1). A guide groove (4) is provided at the front end of the main body (1), and a protective component is arranged on the inner wall of the guide groove (4). The protective component includes a slide rod (51), and the outer wall of the slide rod (51) is slidably connected to the inner wall of the guide groove (4). The top end of the slide rod (51) is rotatably connected to a pull rod (52), and a limit tooth (55) is arranged near the inner wall of the pull rod (52) of the slide rod (51).

2. A puncture needle for lymph node biopsy according to claim 1, characterized in that: The limiting teeth (55) are meshed with the inner wall of the pull rod (52), and a gasket (53) is provided on the sliding rod (51) near the top end of the pull rod (52).

3. A puncture needle for lymph node biopsy according to claim 2, characterized in that: One end of a compression spring (54) is fixedly connected to the top end of the gasket (53), and the other end of the compression spring (54) is fixedly connected to the outer wall of the slide rod (51).

4. The puncture needle for lymph node biopsy according to claim 1, characterized in that: The outer wall of the bottom end of the sliding rod (51) is fixedly connected to a sleeve (56), and the outer wall of the sleeve (56) slides on the inner wall of the main body (1).

5. The puncture needle for lymph node biopsy according to claim 1, characterized in that: A limiting block (6) is fixedly connected to the inner wall of the main body (1) near the front side of the pull rod (52), and a sliding groove (8) is provided on the inner wall of the right side of the guide groove (4) near the front side of the main body (1).

6. A puncture needle for lymph node biopsy according to claim 5, characterized in that: The front inner wall of the slide groove (8) is slidably connected to a limit block (71); the front inner wall of the limit block (71) is elastically connected to the main body (1) via a return spring (72); and the bottom end of the limit block (71) is arranged as a curved surface.

7. A puncture needle for lymph node biopsy according to claim 6, characterized in that: The upper side of the limit block (71) is arranged as a curved surface.

8. The puncture needle for lymph node biopsy according to claim 1, characterized in that: The right side of the pull rod (52) is configured to be in a spherical shape.

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