Hugging biopsy extractor

Abstract

The present invention relates to the technical field of medical devices, and in particular to a clamping biopsy extractor. The clamping biopsy extractor includes a material taking component and an adjusting component. The material taking component includes an inner tube and a handle. A through channel is provided inside the handle, and a connecting block is arranged inside the channel. One end of the inner tube is fixedly connected to the connecting block, and the other end is provided with material taking teeth. The outer wall of the end of the inner tube provided with the material taking teeth contains a gradually expanding section, and a notch is opened at the end of the inner tube provided with the material taking teeth. The adjusting component includes a sleeve, a sleeve connecting piece and a button. The sleeve connecting piece is installed in the channel. A sleeve installation hole, a connecting block accommodation hole and a button installation hole are successively opened on the sleeve connecting piece. The connecting end of the button is limitedly installed in the button installation hole, and the pressing end of the button abuts against the outer wall of the sleeve connecting piece. A spring is arranged between the button and the connecting block. After cutting the bone lesion tissue, the present invention clamps the lesion tissue and smoothly takes it out, and the sampling success rate is extremely high.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a hugging biopsy extractor. Background Art

[0002] Biopsy is short for "biopsy of living tissue", also known as surgical pathological examination. It refers to the technique of taking out diseased tissues from a patient's body by cutting, clamping or puncturing, etc. for pathological examination for the needs of diagnosis and treatment. The bone biopsy extractor is a tool used to take out bone lesion tissue samples before the patient's planned surgery to make a clear diagnosis before the surgery.

[0003] Most of the existing biopsy extractors use an extraction cylinder to cut bone lesion tissue, and the bone lesion tissue is taken out after staying in the inner cavity of the extraction cylinder. The success rate of such biopsy extractors in obtaining qualified samples by single insertion into the bone is relatively low. Summary of the Invention

[0004] The purpose of the present invention is to provide a hugging biopsy extractor, which overcomes the deficiencies of the foregoing prior art, hugs the lesion tissue after cutting the bone lesion tissue, and smoothly takes it out, and has a very high success rate in obtaining qualified samples by single insertion into the bone.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A hugging biopsy extractor includes a material taking component and an adjusting component, wherein:

[0007] The material taking component includes an inner tube and a handle. A through channel is arranged in the handle. A connecting block is arranged inside the channel. The width of the connecting block is smaller than the width of the channel. One end of the inner tube is fixedly connected to the connecting block. The other end of the inner tube is provided with material taking teeth. The outer wall of the end of the inner tube provided with the material taking teeth contains a gradually expanding section. An incision is opened at the end of the inner tube provided with the material taking teeth, and the incision passes through the gradually expanding section;

[0008] The adjusting component includes a sleeve, a sleeve connecting piece and a button. The sleeve connecting piece is installed in the channel. The sleeve connecting piece is successively provided with a sleeve installation hole, a connecting block accommodation hole and a button installation hole. The sleeve installation hole, the connecting block accommodation hole and the button installation hole are communicated with each other. The width of the button installation hole is greater than the width of the connecting block accommodation hole. A first limiting block is arranged in the button installation hole. The button includes a connecting end and a pressing end. A second limiting block is arranged at the connecting end of the button. The connecting end of the button is installed in the button installation hole through the cooperation of the first limiting block and the second limiting block. The pressing end of the button abuts against the outer wall of the sleeve connecting piece. One end of the sleeve is fixed in the sleeve installation hole, and the sleeve is sleeved outside the inner tube;

[0009] A spring is arranged between the button and the connecting block. When the spring is naturally extended, the connecting block is located in the connecting block receiving hole and the end of the sleeve away from the sleeve connector is located at the narrow end of the gradually expanding section of the inner tube;

[0010] When using the clamping biopsy extractor, hold the handle and rotate the front end of the inner tube of the biopsy extractor with extraction teeth to cut the bone. Part of the bone will enter the inner tube with extraction teeth. When the inner cavity of the front end of the inner tube enters the required depth of the biopsy site, stop going deeper, keep the handle still, press the button downward, and the pressing end of the button presses down the sleeve connector, thereby driving the sleeve to move downward relative to the inner tube. During the movement of the front end of the sleeve, the gradually expanding section of the front end of the inner tube is pushed to close along the incision, squeezing the front end of the inner tube to shrink it, thereby clamping the bone in the inner cavity of the inner tube. Keep the button still to remove the entire clamping biopsy extractor. After removal, release the button, and the bone at the front end of the inner tube is removed and transferred to the biopsy vessel for testing.

[0011] Furthermore, the width of the sleeve connector matches the width of the channel, thereby improving the stability of the sleeve connector during movement, thereby improving the stability of the sleeve during movement.

[0012] Furthermore, the connecting end of the button includes two symmetrically arranged connecting plates, and a second limiting block is symmetrically arranged at the lower end of the connecting plate; a first limiting block cooperating with the second limiting block is symmetrically arranged in the button mounting hole to facilitate the convenient installation of the button.

[0013] Furthermore, mutually cooperating inclined surfaces and mutually cooperating snap-fitting surfaces are provided between the first limit block and the second limit block. When the button is installed in the button mounting hole, the inclined surfaces of the first limit block and the second limit block cooperate with each other, so that the second limit block can be smoothly pushed into the space inside the first limit block. Under the action of the spring, the snap-fitting surfaces of the first limit block and the second limit block fit together, effectively preventing the button from falling out of the button mounting hole.

[0014] Furthermore, a spring guide shaft is provided at the pressing end of the button, and the upper end of the spring is sleeved on the outside of the spring guide shaft, so that the spring does not deviate left or right during the pressing process.

[0015] Furthermore, the inner tube is threadedly connected to the connecting block.

[0016] Furthermore, a pressing end movable groove is provided on the handle.

[0017] The beneficial effects of the present invention are as follows: Compared with the prior art, the clamping biopsy extractor of the present invention has the following advantages: reasonable structural design, convenient operation, and extremely high success rate of obtaining qualified samples by inserting into the bone once. When using the clamping biopsy extractor, hold the handle and rotate the inner tube of the biopsy extractor with extraction teeth to cut the bone mass. Part of the bone mass will enter the interior of the inner tube with extraction teeth. When the inner cavity at the front end of the inner tube reaches the required depth of the biopsy site, stop advancing. Keep the handle still and press the button downward. The pressing end of the button presses down the sleeve connector, thereby driving the sleeve to move downward relative to the inner tube. During the movement of the front end of the sleeve, it pushes the gradually expanding section at the front end of the inner tube to close along the incision, squeezing the front end of the inner tube to make it contract, so as to realize the clamping of the bone mass in the inner cavity of the inner tube. Keep the button still and remove the entire clamping biopsy extractor. After removal, release the button, and the bone mass at the front end of the inner tube is taken out and transferred to the container for biopsy for detection use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is the present invention Figure 1 Schematic enlarged view of the structure of Area A;

[0020] Figure 3 is a schematic side view structure of the present invention;

[0021] Figure 4 is the present invention Figure 3 Schematic cross-sectional view of the structure taken along B-B';

[0022] Figure 5 is a schematic three-dimensional structure diagram of the material taking assembly of the present invention;

[0023] Figure 6 is a schematic side view structure of the material taking assembly of the present invention;

[0024] Figure 7 is the present invention Figure 6 Schematic cross-sectional view of the structure taken along C-C';

[0025] Figure 8 is a schematic diagram of the structure of the present invention after removing the disassembly button of the adjustment assembly;

[0026] Figure 9 is another angle schematic diagram of the structure of the present invention after removing the disassembly button of the adjustment assembly;

[0027] Among them, the inner tube 1, the handle 2, the channel 3, the connecting block 4, the material taking teeth 5, the gradually expanding section 6, the incision 7, the sleeve 8, the sleeve connecting piece 9, the button 10, the sleeve mounting hole 11, the connecting block accommodating hole 12, the button mounting hole 13, the first limiting block 14, the second limiting block 15, the spring 16, the spring guide shaft 17, and the pressing end moving groove 18. Specific embodiments

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] As Figures 1-9 In the illustrated embodiment, a clamping biopsy extractor includes a material taking assembly and an adjusting assembly, wherein:

[0030] The material taking assembly includes an inner tube 1 and a handle 2. A through channel 3 is provided inside the handle 2. A connecting block 4 is provided inside the channel 3. The width of the connecting block 4 is smaller than the width of the channel 3. One end of the inner tube 1 is fixedly connected to the connecting block 4. The other end of the inner tube 1 is provided with material taking teeth 5. The outer wall of the end of the inner tube 1 where the material taking teeth 5 are provided has a gradually expanding section 6. An incision 7 is opened at the end of the inner tube 1 where the material taking teeth 5 are provided, and the incision 7 passes through the gradually expanding section 6;

[0031] The adjusting assembly includes a sleeve 8, a sleeve connecting piece 9, and a button 10. The sleeve connecting piece 9 is installed inside the channel 3. The sleeve connecting piece 9 is successively provided with a sleeve mounting hole 11, a connecting block accommodating hole 12, and a button mounting hole 13. The sleeve mounting hole 11, the connecting block accommodating hole 12, and the button mounting hole 13 are communicated with each other. The width of the button mounting hole 13 is greater than the width of the connecting block accommodating hole 12. A first limiting block 14 is provided inside the button mounting hole 13. The button 10 includes a connecting end and a pressing end. A second limiting block 15 is provided at the connecting end of the button 10. The connecting end of the button 10 is installed in the button mounting hole 13 through the cooperation of the first limiting block 14 and the second limiting block 15. The pressing end of the button 10 abuts against the outer wall of the sleeve connecting piece 9. One end of the sleeve 8 is fixed inside the sleeve mounting hole 11, and the sleeve 8 is sleeved outside the inner tube 1;

[0032] A spring 16 is provided between the button 10 and the connecting block 4. When the spring 16 naturally extends, the connecting block 4 is located inside the connecting block accommodating hole 12 and the end of the sleeve 8 away from the sleeve connecting piece 9 is located at the narrow end of the gradually expanding section 6 of the inner tube 1;

[0033] When the clamping biopsy extractor is in use, hold the handle 2 and rotate the front end of the inner tube 1 with the extraction teeth of the biopsy extractor to cut the bone. Part of the bone will enter the inner tube 1 with the extraction teeth. When the inner cavity of the front end of the inner tube 1 enters the required depth of the biopsy site, stop going deeper, keep the handle 2 still, press the button 10 downward, the pressing end of the button 10 presses down the sleeve connector 9, and then drives the sleeve 8 to move downward relative to the inner tube 1. During the movement of the front end of the sleeve 8, the gradually expanding section 6 at the front end of the inner tube 1 is pushed to close along the incision, squeeze the front end of the inner tube 1, and shrink it, thereby clamping the bone in the inner cavity of the inner tube 1. Keep the button 10 still to remove the entire clamping biopsy extractor. After removal, release the button 10, and the bone at the front end of the inner tube 1 is removed and transferred to the biopsy vessel for detection.

[0034] In this embodiment, the width of the sleeve connector 9 matches the width of the channel 3, thereby improving the stability of the sleeve connector 9 during movement, thereby improving the stability of the sleeve 8 during movement.

[0035] In this embodiment, the connecting end of the button 10 includes two symmetrically arranged connecting plates, and a second limit block 15 is symmetrically arranged at the lower end of the connecting plate; a first limit block 14 cooperating with the second limit block 15 is symmetrically arranged in the button mounting hole 13 to facilitate the convenient installation of the button 10.

[0036] In this embodiment, mutually matching inclined surfaces and mutually matching snap-fitting surfaces are provided between the first limit block 14 and the second limit block 15. When the button 10 is installed in the button mounting hole 13, the inclined surfaces of the first limit block 14 and the second limit block 15 match each other, so that the second limit block 15 can be smoothly pushed into the space inside the first limit block 14. Under the action of the spring 16, the snap-fitting surfaces of the first limit block 14 and the second limit block 15 fit together, effectively preventing the button 10 from falling out of the button mounting hole 13.

[0037] In this embodiment, a spring guide shaft 17 is provided at the pressing end of the button 10, and the upper end of the spring 16 is sleeved outside the spring guide shaft 17, so that the spring 16 does not deviate left or right during the pressing process.

[0038] In this embodiment, the inner tube 1 and the connecting block 4 are threadedly connected.

[0039] In this embodiment, a pressing end movable groove 18 is provided on the handle 2 .

[0040] The above-mentioned specific implementations are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific implementations. Any appropriate changes or modifications made to them by ordinary technicians in the technical field that conform to the claims of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A clamping biopsy extractor, characterized in that: It includes a material taking component and an adjusting component, where: The material taking component includes an inner tube and a handle. A through channel is provided inside the handle. A connecting block is arranged inside the channel. The width of the connecting block is smaller than the width of the channel. One end of the inner tube is fixedly connected to the connecting block. The other end of the inner tube is provided with material taking teeth. The outer wall of the end of the inner tube where the material taking teeth are provided has a gradually expanding section. A notch is provided at the end of the inner tube where the material taking teeth are provided, and the notch passes through the gradually expanding section; The adjusting component includes a sleeve, a sleeve connecting piece and a button. The sleeve connecting piece is installed in the channel. A sleeve installation hole, a connecting block accommodation hole and a button installation hole are sequentially provided on the sleeve connecting piece. The width of the button installation hole is greater than the width of the connecting block accommodation hole. A first limiting block is arranged in the button installation hole. The button includes a connecting end and a pressing end. A second limiting block is provided at the connecting end of the button. The connecting end of the button is installed in the button installation hole through the cooperation of the first limiting block and the second limiting block. The pressing end of the button abuts against the outer wall of the sleeve connecting piece. One end of the sleeve is fixed in the sleeve installation hole, and the sleeve is sleeved outside the inner tube; A spring is arranged between the button and the connecting block. When the spring naturally extends, the connecting block is located in the connecting block accommodation hole and the end of the sleeve away from the sleeve connecting piece is located at the narrow end of the gradually expanding section of the inner tube; The width of the sleeve connecting piece matches the width of the channel; The connecting end of the button includes two symmetrically arranged connecting plates, and second limiting blocks are symmetrically arranged at the lower ends of the connecting plates; first limiting blocks matching the second limiting blocks are symmetrically arranged in the button installation hole.

2. The hugging biopsy extractor according to claim 1, wherein: Mutually cooperating inclined surfaces and mutually cooperating clamping surfaces are arranged between the first limiting block and the second limiting block.

3. The hugging biopsy extractor according to claim 1, wherein: A spring guide shaft is arranged at the pressing end of the button, and the upper end of the spring is sleeved outside the spring guide shaft.

4. The hugging biopsy extractor according to claim 1, wherein: The inner tube is threadedly connected to the connecting block.

5. The hugging biopsy extractor according to claim 1, wherein: A pressing end moving groove is provided on the handle.

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