A tumor puncture biopsy sampling device for gynecology

Abstract

The present application relates to the technical field of tumor biopsy sampling, and discloses a tumor puncture biopsy sampling device for gynecology, which comprises a sleeve, a trocar arranged at the bottom of the sleeve, a sampling needle arranged inside the trocar, the sampling needle being in sliding connection with the inside of the sleeve, a sampling groove arranged at the bottom end of the sampling needle, and an ejection cutting unit arranged on the sleeve; the ejection cutting unit comprises an ejection component arranged on the sleeve. The tumor puncture biopsy sampling device for gynecology can realize accurate and temporary positioning of the sampling needle in the middle of ejection, and supports real-time fine adjustment of the puncture angle in the clinic. The position of a gynecological pelvic tumor lesion is hidden, and the surrounding is densely covered with blood vessels, intestines, uterus and other important tissues, so that the fixed puncture path is easily blocked and interfered. The structure can flexibly correct the puncture trajectory, avoid dangerous tissues, and does not need to repeatedly withdraw the needle and puncture, thereby greatly reducing the number of punctures, and effectively reducing the risk of intraoperative bleeding and organ damage of the patient.

Description

Technical Field

[0001] This invention relates to the field of tumor biopsy sampling technology, and more particularly to a tumor puncture biopsy sampling device for gynecology. Background Technology

[0002] Gynecological pelvic tumors are mostly diagnosed through biopsy to obtain tissue specimens. Pathological examination results are crucial for determining the benign or malignant nature of the tumor, classifying it, and formulating subsequent surgical, radiotherapy, and chemotherapy plans. Biopsy sampling equipment is required for tumor biopsy. However, existing biopsy sampling equipment has the following limitations: Current biopsy sampling methods utilize spring-loaded ejection. The spring is compressed to a certain degree, then released, causing the sampling needle to pierce the tumor tissue for sampling. During clinical procedures, the puncture path is not always perfectly positioned on the first attempt due to factors such as ultrasound imaging, the actual lesion morphology, and obstruction from surrounding organs. The sampling angle may need to be adjusted. In such cases, the sampling needle must be stopped, its angle adjusted, and then it driven again to insert into the tumor tissue for sampling. However, traditional spring-loaded ejection systems are one-time release mechanisms; once the spring is released, it continuously outputs power, making it difficult to stop the needle mid-procedure, adjust the angle, and then re-enter. Forcibly interrupting the procedure leads to spring wear and insufficient subsequent cutting force. Furthermore, some gynecological tumors are highly fibrotic, dense, and tough, making it difficult for the tumor tissue to autonomously squeeze into the sampling slot. This directly results in insufficient specimen volume or even sample slippage and loss, rendering the obtained tissue specimen unsuitable for pathological analysis. Repeated punctures are often required, which increases the risk of bleeding and local damage to the patient, and also prolongs the operation time, causing great trouble to clinical biopsy work. Summary of the Invention

[0003] In view of the problems of existing technology, such as the inability of the sampling needle to be ejected and moved a second time when the sampling angle changes during sampling, and the difficulty in sampling when the tumor tissue is highly fibrotic, a tumor puncture biopsy sampling device for gynecology is proposed.

[0004] This application provides a tumor biopsy sampling device for gynecology, the purpose of which is to enable the sampling needle to be fed twice after the angle of the sampling needle is adjusted, so as to be able to sample tumor tissue with a high degree of fibrosis normally.

[0005] The technical solution of the present invention is as follows: a tumor puncture biopsy sampling device for gynecology, including a sleeve, a needle at the bottom of the sleeve, a sampling needle inside the needle, the sampling needle being slidably connected to the inside of the sleeve, a sampling groove at the bottom end of the sampling needle, and also including an ejector cutting unit disposed on the sleeve. The ejector cutting unit includes an ejector component mounted on a sleeve, and a cutting component mounted inside the sampling groove. The ejector component includes an ejector assembly, a limiting assembly, a pressurizing assembly, an adjusting assembly, and a one-way rotation assembly mounted inside the sleeve. The ejection component is used to eject the sampling needle to collect samples, and the cutting component cuts the tumor tissue that enters the inner side of the sampling groove. The ejection assembly includes an ejection tube disposed inside the sleeve, the top of the sampling needle being fixedly connected to the bottom of the ejection tube, a top ring being disposed at the top of the ejection tube, a movable disk being disposed at the top of the inner side of the sleeve, and two ejection springs being symmetrically distributed between the top ring and the movable disk.

[0006] Furthermore, the limiting component includes a plurality of limiting grooves evenly spaced on the ejection tube, and a limiting rod is also provided on the sleeve. A limiting spring is provided between the limiting rod and the sleeve, and the limiting spring is sleeved on the limiting rod.

[0007] Furthermore, the pressurizing assembly includes a threaded rod disposed on the top of the inner side of the sleeve, a movable disc threadedly connected to the threaded rod, a drive motor disposed on the top of the sleeve, and the output shaft of the drive motor being fixedly connected to the threaded rod.

[0008] Furthermore, the adjustment assembly includes a movable groove on the ejection tube, a toothed plate on the inner side of the movable groove, the toothed plate being fixedly connected to the top ring, a sliding groove on the sleeve, a slider on the inner side of the sliding groove, an adjustment rod on the slider, and several teeth arranged in a circular array on the outer side of the adjustment rod, the teeth engaging with the toothed plate, and an adjustment spring between the slider and the adjustment rod, the adjustment spring being sleeved on the adjustment rod.

[0009] Furthermore, the one-way rotation assembly includes a ratchet mounted on the slider, an adjusting rod sleeved inside the ratchet, a movable cavity on the adjusting rod, a one-way lever inside the movable cavity, a connecting spring between the one-way lever and the inner wall of the movable cavity, and the one-way lever slidably connected to the inner side of the ratchet.

[0010] Furthermore, the cutting component includes a cutting assembly disposed inside the sampling groove; The cutting assembly includes arc-shaped grooves located at both ends of the sampling groove on the sampling needle. Two arc-shaped blocks are symmetrically distributed on the inner side of each of the two arc-shaped grooves. A cutting blade is provided between each pair of opposite arc-shaped blocks. An elastic strip is provided between the two arc-shaped blocks on the inner side of one of the arc-shaped grooves and the inner wall of the arc-shaped groove. An arc-shaped steel wire rope is provided between the two arc-shaped blocks on the inner side of this arc-shaped groove. A pulling steel wire rope is provided on the sampling needle. One end of the pulling steel wire rope passes through the sleeve and extends to the outside of the sleeve. The other end of the pulling steel wire rope is fixedly connected to the arc-shaped steel wire rope.

[0011] Furthermore, the sampling groove has several barbs symmetrically distributed on its inner side.

[0012] Furthermore, the ejection tube is equipped with a reset wire rope, with the end of the reset wire rope away from the ejection tube passing through the top ring and the sleeve and extending to the outside of the sleeve.

[0013] Furthermore, the sleeve is provided with a handle.

[0014] The beneficial effects of this invention are: The limiting component allows for precise pausing of the sampling needle mid-ejection, supporting real-time fine-tuning of the puncture angle in clinical practice. Gynecological pelvic tumors are often located in concealed areas, surrounded by numerous blood vessels, intestines, and vital tissues such as the uterus, making it extremely easy for obstructions to interfere with the fixed puncture path. This structure allows for flexible correction of the puncture trajectory, avoiding dangerous tissues, eliminating the need for repeated needle withdrawal and re-puncture, significantly reducing the number of punctures, effectively lowering the risk of intraoperative bleeding and organ damage, and significantly improving puncture positioning accuracy and surgical safety.

[0015] By adjusting the components in conjunction with the pressure sensor, the compression of the ejector spring can be precisely controlled, achieving stepless adjustment of the ejection force. Clinical gynecological tumors vary greatly in texture; fibrotic tumors are dense and hard, making effective puncture and sampling difficult with conventional force, while soft tumors are prone to specimen fragmentation due to excessive force. This structure can adapt the ejection force according to the tumor's hardness, enhancing puncture and cutting ability for hard tumors and preventing specimen compression and damage for soft tumors. It comprehensively adapts to different lesions, significantly improving the sampling qualification rate and success rate.

[0016] The cutting component, combined with the barbed structure within the groove, allows for precise cutting and fixation of the inserted tumor tissue. Traditional sampling relies solely on passive cutting with a cannula, which can lead to the loss of dense tumor tissue, resulting in insufficient sample volume. This structure actively closes the cutting blade to sever the tissue, and the barbs lock the specimen in place, effectively preventing specimen slippage and loss. This ensures a complete and sufficient sample volume, avoids false negatives in pathological diagnosis, and provides reliable sample support for tumor pathological classification and clinical treatment planning. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the sleeve structure of the present invention in a cross section; Figure 3 This is a schematic diagram of the sleeve side section structure of the present invention; Figure 4 This is a schematic diagram of the ejection assembly structure of the present invention; Figure 5 This is a schematic diagram of the adjustment component structure of the present invention; Figure 6 This is a partial structural diagram of the adjustment component of the present invention; Figure 7 This is a schematic diagram of the unidirectional rotation component structure of the present invention; Figure 8 This is a schematic diagram of the cutting component structure of the present invention; Figure 9 This is a schematic diagram of the side cross-section of the sampling needle of the present invention; Figure 10 This is a top-section schematic diagram of the sampling needle structure of the present invention.

[0018] In the picture: 1. Sleeve; 11. Sleeve needle; 12. Sampling needle; 13. Sampling groove; 2. Ejection assembly; 21. Ejection tube; 22. Top ring; 23. Moving disc; 24. Ejection spring; 3. Limiting assembly; 31. Limiting groove; 32. Limiting rod; 33. Limiting spring; 4. Pressurizing assembly; 41. Threaded rod; 42. Drive motor; 5. Adjusting assembly; 51. Toothed plate; 52. Slider; 53. Adjusting rod; 54. Adjusting spring; 6. One-way rotation assembly; 61. Ratchet; 62. One-way rod; 63. Connecting spring; 7. Cutting assembly; 71. Arc block; 72. Cutting blade; 73. Elastic strip; 74. Arc steel wire rope; 75. Pulling steel wire rope; 8. Barb; 9. Reset steel wire rope; 10. Handle. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1, referring to Figures 1-7This invention provides a first embodiment of a gynecological tumor biopsy sampling device, comprising a sleeve 1, a needle 11 fixedly connected to the bottom of the sleeve 1, a sampling needle 12 slidably connected to the inner side of the needle 11, the sampling needle 12 being slidably connected to the inner side of the sleeve 1, and a sampling groove 13 formed at the bottom end of the sampling needle 12. The device also includes an ejector cutting unit mounted on the sleeve 1; the ejector cutting unit includes an ejector component mounted on the sleeve 1, a cutting component mounted inside the sampling groove 13, and the ejector component includes an ejector assembly 2 and a limiting assembly mounted inside the sleeve 1. The components include component 3, pressure component 4, adjustment component 5, and one-way rotation component 6; the ejection component is used to eject the sampling needle 12 for sampling, and the cutting component cuts the tumor tissue that enters the inner side of the sampling groove 13; the ejection component 2 includes an ejection cylinder 21 that is limited and slidably connected to the inner side of the sleeve 1, the top of the sampling needle 12 is fixedly connected to the bottom of the ejection cylinder 21, the top of the ejection cylinder 21 is limited and slidably connected to a top ring 22, the top of the inner side of the sleeve 1 is limited and slidably connected to a moving disk 23, and two ejection springs 24 are symmetrically distributed and fixedly connected between the top ring 22 and the moving disk 23.

[0021] Specifically, under image guidance, the cannula 11 is brought to the vicinity of the lesion. Under the action of the ejector component, the sampling needle 12 is ejected, allowing the tumor tissue to enter the inner side of the sampling groove 13. Under the action of the cutting component, the tumor tissue that has entered the inner side of the sampling groove 13 is cut, allowing the tumor tissue to enter the inner side of the sampling groove 13. The sampling needle 12 is pulled back, so that the ejected part of the sampling needle 12 re-enters the inner side of the cannula 11. Then the cannula 11 is pulled out to complete the sampling operation. Pulling the ejector tube 21 backward brings the top ring 22 closer to the moving disc 23, compressing the ejector spring 24 and limiting the ejector tube 21. Once the needle 11 reaches the vicinity of the lesion, the limitation on the ejector tube 21 is released. Under the action of the ejector spring 24, the top ring 22 moves inside the sleeve 1, causing the ejector tube 21 to eject forward inside the sleeve 1, ejecting the sampling needle 12. When the angle of the sampling needle 12 needs adjustment, the limiting component 3 can limit the movement of the ejector tube 21, stopping its ejection. Then, adjusting the angle of the sampling needle 12, under the action of the pressurizing component 4, causes the ejector spring 24 to be compressed back to its original compression level. The limiting component 3 then allows the ejector tube 21 to eject again, ejecting the sampling needle 12. This allows for flexible correction of the puncture path, avoiding surrounding vital organs. By adapting to the actual location of the lesion, the number of repeated needle insertions is reduced, the sampling success rate is improved, the risk of tissue damage and bleeding is reduced, and qualified pathological specimens are obtained.

[0022] Reference Figure 2 and Figure 3The limiting component 3 includes several limiting grooves 31 that are equally spaced on the ejection tube 21. A limiting rod 32 is also slidably connected to the sleeve 1. A limiting spring 33 is fixedly connected between the limiting rod 32 and the sleeve 1. The limiting spring 33 is sleeved on the limiting rod 32.

[0023] Specifically, initially, under the action of the limiting spring 33, the limiting rod 32 is engaged inside the limiting groove 31, limiting the ejection tube 21. When the ejection tube 21 needs to be ejected, the limiting rod 32 is pulled upward, stretching the limiting spring 33, causing the limiting rod 32 to disengage from the inside of the limiting groove 31, allowing the ejection tube 21 to move quickly. When the ejection tube 21 needs to stop moving, the limiting rod 32 is released, and under the action of the limiting spring 33, the limiting rod 32 is reinserted into the limiting groove 31, limiting the ejection tube 21 again.

[0024] Reference Figure 3 and Figure 4 The pressurizing component 4 includes a threaded rod 41 rotatably connected to the top of the inner side of the sleeve 1, a movable disk 23 threadedly connected to the threaded rod 41, and a drive motor 42 fixedly connected to the top of the sleeve 1. The output shaft of the drive motor 42 is fixedly connected to the threaded rod 41.

[0025] Specifically, the drive motor 42 is started, which drives the threaded rod 41 to rotate, causing the moving disk 23 to slide inside the sleeve 1 and move towards the top ring 22, compressing the ejector spring 24 and restoring it to its original compressed state. A first pressure sensor is installed between the moving disk 23 and the ejector spring 24. The first pressure sensor monitors the pressure on the moving disk 23 in real time, allowing the doctor to know the degree of compression of the ejector spring 24 and when to turn off the drive motor 42.

[0026] Reference Figure 5 and Figure 6 The adjusting component 5 includes a movable groove on the ejector tube 21, a toothed plate 51 slidably connected to the inner side of the movable groove, the toothed plate 51 being fixedly connected to the top ring 22, a sliding groove through the sleeve 1, a slider 52 being slidably connected to the inner side of the sliding groove, an adjusting rod 53 being movably connected to the slider 52, and several teeth being fixedly connected to the outer side of the adjusting rod 53 in a circular array, the teeth meshing with the toothed plate 51, and an adjusting spring 54 being rotatably connected between the slider 52 and the adjusting rod 53, the adjusting spring 54 being sleeved on the adjusting rod 53.

[0027] Specifically, rotating the adjusting rod 53 causes the teeth to rotate, moving the toothed plate 51 within the movable groove. This moves the top ring 22, causing it to move towards or away from the moving disk 23, compressing the ejector spring 24. When the top ring 22 moves closer to the moving disk 23, the ejector spring 24 is compressed more, releasing more energy and causing the sampling needle 12 to move faster, resulting in better puncture results, especially for fibrotic tumors. When the top ring 22 presses against the moving disk 23, the ejector spring 24 is compressed less, causing the sampling needle 12 to move more slowly, which is more effective for softer tumor tissue. A second pressure sensor is installed between the sheath 11 and the sleeve 1. When the sheath 11 is inserted into the tumor tissue, the pressure on the sheath 11 can be sensed by the second pressure sensor to identify the hardness of the tumor tissue. It can adapt to tumor tissues of different textures, with increased force for dense fibrotic tumors to ensure entry, and reduced force for soft tumors to avoid specimen crushing, reduce puncture damage, and improve the sampling success rate for different lesions.

[0028] Reference Figure 6 and Figure 7 The one-way rotation assembly 6 includes a ratchet 61 fixedly connected to the slider 52, an adjusting rod 53 sleeved inside the ratchet 61, an adjustable rod 53 having a movable cavity, a one-way rod 62 slidably connected inside the movable cavity, a connecting spring 63 fixedly connected between the one-way rod 62 and the inner wall of the movable cavity, and the one-way rod 62 slidably connected to the inner side of the ratchet 61.

[0029] Specifically, when the adjusting rod 53 rotates along the ratchet teeth of the ratchet 61, the one-way lever 62 slides inside the ratchet 61 under the action of the connecting spring 63, allowing the adjusting rod 53 to rotate smoothly and adjust the compression of the ejector spring 24. When the adjusting rod 53 rotates against the ratchet teeth of the ratchet 61, the one-way lever 62 will abut against the ratchet teeth of the ratchet 61. Under the action of the ratchet 61 and the one-way lever 62, the adjusting rod 53 cannot rotate, achieving the effect of one-way rotation of the adjusting rod 53. This allows the top ring 22 to move the ejector tube 21, with its teeth engaging with the toothed plate 51. When it is necessary for the adjusting rod 53 to rotate against the ratchet teeth of the ratchet 61, the adjusting rod 53 is pulled outward, stretching the adjusting spring 54, causing the one-way lever 62 to separate from the ratchet 61, allowing the adjusting rod 53 to rotate normally against the ratchet teeth of the ratchet 61.

[0030] Example 2, refer to Figures 8-10This is the second embodiment of the present invention, which differs from the first embodiment in that: the cutting component includes a cutting assembly 7 installed inside the sampling groove 13; the cutting assembly 7 includes arc-shaped grooves located at both ends of the sampling groove 13 on the sampling needle 12, and two arc-shaped blocks 71 are symmetrically distributed and slidably connected inside the two arc-shaped grooves, and a cutting blade 72 is provided between the two opposing arc-shaped blocks 71. An elastic strip 73 is fixedly connected between the two arc-shaped blocks 71 inside one of the arc-shaped grooves and the inner wall of the arc-shaped groove. An arc-shaped steel wire rope 74 is fixedly connected between the two arc-shaped blocks 71 inside this arc-shaped groove. A pulling steel wire rope 75 is slidably connected to the sampling needle 12. One end of the pulling steel wire rope 75 passes through the sleeve 1 and extends to the outside of the sleeve 1, and the other end of the pulling steel wire rope 75 is fixedly connected to the arc-shaped steel wire rope 74.

[0031] Specifically, when the sampling needle 12 pops out and inserts into the tumor tissue, the tumor tissue will fill the inner side of the sampling groove 13. At this time, the steel wire rope 75 is moved and pulled, which drives the arc-shaped steel wire rope 74 to move, so that the two arc-shaped blocks 71 move closer to each other, which drives the two cutting blades 72 to move closer to each other and close, cutting the tumor tissue, leaving the tumor tissue inside the sampling groove 13, so that the elastic strip 73 is stretched. When the steel wire rope 75 is released, the elastic strip 73 will return to its original position, so that the arc-shaped blocks 71 move and return to their original position inside the arc groove, and the cutting blades 72 move and return to their original position, so that the tumor tissue can fill the inner side of the sampling groove 13 during the next sampling.

[0032] Reference Figure 9 and Figure 10 The sampling groove 13 has several barbs 8 that are symmetrically distributed and fixedly connected on its inner side.

[0033] Specifically, the barbs 8 can hold the tumor tissue filled inside the sampling groove 13 in place, making it difficult for the tumor tissue to slip out inside the sampling groove 13 and thus preventing sampling failure. The rest of the structure is the same as that in Example 1.

[0034] Example 3, referring to Figure 2 and Figure 3 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that a reset steel wire rope 9 is fixedly connected to the ejection tube 21. The end of the reset steel wire rope 9 away from the ejection tube 21 passes through the top ring 22 and the sleeve 1 and extends to the outside of the sleeve 1.

[0035] Specifically, by resetting the wire rope 9, the ejector tube 21 can be moved and reset, which facilitates the next sampling and also makes it easier to store the sample inside the sampling slot 13 inside the needle 11.

[0036] Reference Figure 1 and Figure 3 A handle 10 is fixedly connected to the sleeve 1.

[0037] Specifically, the handle 10 facilitates the operation and use of the sampling device by medical personnel. The rest of the structure is the same as that in Embodiment 2.

[0038] Based on embodiments 1-3, the working principle of the present invention is as follows: Medical personnel hold the handle 10 and pull the reset wire rope 9, causing the ejector tube 21 to stop at the designated position. Under the action of the limiting rod 32 and the limiting groove 31, the ejector tube 21 is limited. The medical personnel insert the end of the device into the patient's body, so that the needle 11 reaches the lesion. The limiting rod 32 is pulled out from the inside of the limiting groove 31. Under the action of the ejection spring 24, the ejector tube 21 is ejected, which drives the sampling needle 12 to be ejected and enter the tumor tissue. When the moving angle of the sampling needle 12 needs to be adjusted, the limiting rod 32 is lowered. Under the action of the limiting spring 33, the limiting rod 32 is re-inserted into the limiting groove 31 to limit the ejection tube 21. At this time, the drive motor 42 is started, which drives the threaded rod 41 to rotate, causing the moving disk 23 to move towards the top ring 22, so that the amount released by the ejection spring 24 is compressed back to the original compression amount. After the angle of the sampling needle 12 is adjusted, the limiting rod 32 is pulled up again, so that the ejection tube 21 continues to eject. When the ejection intensity of the ejection tube 21 needs to be adjusted, the adjusting rod 53 is rotated. Under the action of the teeth and the toothed plate 51, the top ring 22 is moved, compressing the ejection spring 24, so that the ejection intensity of the ejection tube 21 is increased, which can eject and sample harder tumor tissue. After the sampling needle 12 is inserted into the tumor tissue, the tumor tissue will fill the inner side of the sampling groove 13. Moving and pulling the steel wire rope 75 will drive the arc-shaped steel wire rope 74 to move, so that the arc-shaped block 71 slides inside the arc-shaped groove, driving the two cutting blades 72 to move closer to each other and close, cutting the tumor tissue. Under the action of the barbs 8, the tumor tissue is pinned. Then, by resetting the steel wire rope 9, the ejector tube 21 is pulled and reset, so that the sampling needle 12 re-enters the inner side of the sheath needle 11, and the tumor tissue is preserved.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A gynecological tumor biopsy sampling device, comprising a sleeve (1), a needle (11) disposed at the bottom of the sleeve (1), a sampling needle (12) disposed inside the needle (11), the sampling needle (12) being slidably connected to the inside of the sleeve (1), and a sampling groove (13) disposed at the bottom end of the sampling needle (12), characterized in that: It also includes a catapult cutting unit mounted on the sleeve (1); The ejector cutting unit includes an ejector component set on the sleeve (1), and a cutting component set inside the sampling groove (13). The ejector component includes an ejector assembly (2), a limiting assembly (3), a pressurizing assembly (4), an adjusting assembly (5), and a one-way rotation assembly (6) set inside the sleeve (1). The ejection component is used to eject the sampling needle (12) for sampling, and the cutting component cuts the tumor tissue that enters the inner side of the sampling groove (13). The ejection assembly (2) includes an ejection tube (21) disposed inside the sleeve (1), the top of the sampling needle (12) is fixedly connected to the bottom of the ejection tube (21), a top ring (22) is provided on the top of the ejection tube (21), a movable disk (23) is provided on the top of the inner side of the sleeve (1), and two ejection springs (24) are symmetrically distributed between the top ring (22) and the movable disk (23).

2. The tumor biopsy sampling device for gynecology according to claim 1, characterized in that: The limiting component (3) includes a plurality of limiting grooves (31) arranged at equal intervals on the ejection tube (21), and a limiting rod (32) is also provided on the sleeve (1). A limiting spring (33) is provided between the limiting rod (32) and the sleeve (1), and the limiting spring (33) is sleeved on the limiting rod (32).

3. The gynecological tumor biopsy sampling device according to claim 1, characterized in that: The pressurizing component (4) includes a threaded rod (41) disposed on the top of the inner side of the sleeve (1), a movable disk (23) is threadedly connected to the threaded rod (41), and a drive motor (42) is disposed on the top of the sleeve (1). The output shaft of the drive motor (42) is fixedly connected to the threaded rod (41).

4. The gynecological tumor biopsy sampling device according to claim 1, characterized in that: The adjustment component (5) includes a movable groove on the ejector tube (21), a toothed plate (51) is provided on the inner side of the movable groove, the toothed plate (51) is fixedly connected to the top ring (22), a sliding groove is provided on the sleeve (1), a slider (52) is provided on the inner side of the sliding groove, an adjustment rod (53) is provided on the slider (52), a number of teeth are arranged in a ring array on the outer side of the adjustment rod (53), the teeth are meshed with the toothed plate (51), and an adjustment spring (54) is provided between the slider (52) and the adjustment rod (53), the adjustment spring (54) is sleeved on the adjustment rod (53).

5. The tumor biopsy sampling device for gynecology according to claim 4, characterized in that: The one-way rotation assembly (6) includes a ratchet (61) mounted on a slider (52), an adjusting rod (53) sleeved inside the ratchet (61), an adjustable rod (53) having a movable cavity, a one-way rod (62) inside the movable cavity, a connecting spring (63) between the one-way rod (62) and the inner wall of the movable cavity, and the one-way rod (62) being slidably connected to the inner side of the ratchet (61).

6. The gynecological tumor biopsy sampling device according to claim 1, characterized in that: The cutting component includes a cutting assembly (7) disposed inside the sampling slot (13). The cutting assembly (7) includes arc-shaped grooves located at both ends of the sampling groove (13) on the sampling needle (12). Two arc-shaped blocks (71) are symmetrically distributed on the inner side of each of the two arc-shaped grooves. A cutting blade (72) is provided between each of the two opposing arc-shaped blocks (71). An elastic strip (73) is provided between the two arc-shaped blocks (71) on the inner side of one of the arc-shaped grooves and the inner wall of the arc-shaped groove. An arc-shaped steel wire rope (74) is provided between the two arc-shaped blocks (71) on the inner side of this arc-shaped groove. A pulling steel wire rope (75) is provided on the sampling needle (12). One end of the pulling steel wire rope (75) passes through the sleeve (1) and extends to the outside of the sleeve (1). The other end of the pulling steel wire rope (75) is fixedly connected to the arc-shaped steel wire rope (74).

7. The gynecological tumor biopsy sampling device according to claim 1, characterized in that: The sampling groove (13) has several barbs (8) symmetrically distributed on its inner side.

8. The gynecological tumor biopsy sampling device according to claim 1, characterized in that: The ejector tube (21) is provided with a reset wire rope (9). The end of the reset wire rope (9) away from the ejector tube (21) passes through the top ring (22) and the sleeve (1) and extends to the outside of the sleeve (1).

9. The gynecological tumor biopsy sampling device according to claim 1, characterized in that: The sleeve (1) is provided with a handle (10).

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