A device for tissue sampling

Abstract

The utility model belongs to the field of medical apparatus and instruments provides a device for tissue sample material, including cylinder, press cylinder, connecting rod, punch rod, cutting head, press cylinder slidingly covers in the cylinder, and press cylinder first end extends to the outside of cylinder, connecting rod sets up in press cylinder second end, and connecting rod is away from press cylinder one end with punch rod detachable connection, and the outside of connecting rod is equipped with elastic part, and the inside wall of cylinder is equipped with the limit platform, and the both ends of elastic part are respectively with limit platform, press cylinder abuts, cutting head is detachable with cylinder connection, and the inside of cutting head is coaxial with through -hole. The device uses, inserts cutting head into sample tissue, and part sample tissue can enter through -hole, then moves cylinder to above receiving container, presses press cylinder by going down, makes punch rod enter through -hole, and sample tissue is pushed out through -hole, can complete material taking. Secondly, through the installation of different specifications cutting head, replaces the punch rod of adaptation, can satisfy the diversified clinical demand.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to a device for tissue sample collection. Background Technology

[0002] In traditional pathological biopsy, small sample tissue is obtained manually and mechanically, which cannot be standardized and results in low efficiency.

[0003] Secondly, existing sampling tools cannot meet the diverse sampling needs when collecting small samples of different diameters or volumes. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a device for tissue sample collection, which can solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for tissue sample collection, comprising a cylinder, a pressing cylinder, a connecting rod, a punch rod, and a cutting head;

[0006] The pressing cylinder is slidably sleeved inside the cylinder, and the first end of the pressing cylinder extends to the outside of the cylinder;

[0007] The connecting rod is disposed at the second end of the pressing cylinder. The end of the connecting rod away from the pressing cylinder is detachably connected to the punch rod. An elastic element is sleeved on the outer side of the connecting rod. A limiting platform is provided on the inner side wall of the cylinder. The two ends of the elastic element abut against the limiting platform and the pressing cylinder, respectively.

[0008] The cutting head is detachably connected to the cylinder body, and a through hole is provided coaxially on the inner side of the cutting head, which is aligned with the punch rod.

[0009] Preferably, the cutting head is threadedly connected to the cylinder.

[0010] Preferably, the connecting rod is threadedly connected to the punch rod.

[0011] Preferably, the connecting rod has a variable diameter section at one end near the punch rod.

[0012] Preferably, the cutting head is a stainless steel cutting head.

[0013] Preferably, the cylinder is a polypropylene cylinder.

[0014] Preferably, a guide sleeve is coaxially provided on the inner side wall of the cylinder, the pressing cylinder is slidably engaged with the guide sleeve, a strip-shaped through groove is provided on the inner side wall of the guide sleeve, and a limiting block is provided on the side wall of the pressing cylinder, the limiting block being adapted to the strip-shaped through groove.

[0015] Preferably, a first adjusting sleeve is provided on the outer side of the punch rod, and a first strip groove, a first initial groove, and a first usage groove are provided on the outer side wall of the punch rod. A first adjusting block is provided on the inner side wall of the first adjusting sleeve. The first adjusting block is adapted to the first strip groove, the first initial groove, and the first usage groove. The first initial groove and the first usage groove are both connected to the first strip groove.

[0016] Preferably, a second adjusting sleeve is provided on the outer side of the first adjusting sleeve. The outer wall of the first adjusting sleeve is provided with a second strip groove, a second initial groove, and a second usage groove. The inner wall of the second adjusting sleeve is provided with a second adjusting block. The second adjusting block is adapted to the second strip groove, the second initial groove, and the second usage groove. The second initial groove and the second usage groove are both connected to the second strip groove.

[0017] Preferably, a third adjusting sleeve is fitted on the outer side of the second adjusting sleeve. The outer wall of the second adjusting sleeve is provided with a third strip groove, a third initial groove, and a third usage groove. The inner wall of the third adjusting sleeve is provided with a third adjusting block. The third adjusting block is adapted to the third strip groove, the third initial groove, and the third usage groove. The third initial groove and the third usage groove are both connected to the third strip groove.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention provides a device for tissue sample collection. When small tissue samples need to be collected, the cutting head is inserted into the sample tissue, allowing some sample tissue to enter the through-hole. Then, the cylinder is moved above the receiving container, and by pressing down on the cylinder, the punch enters the through-hole, pushing the sample tissue out and allowing it to fall into the receiving container, thus completing the collection. This device is easy to operate, low in cost, allows for standardized collection, and reduces tissue sample damage. Furthermore, by installing different sized cutting heads and replacing them with suitable punches, diverse clinical needs can be met. Attached Figure Description

[0020] Figure 1 A three-dimensional structural schematic diagram of a device for tissue sample collection provided in an embodiment of this utility model;

[0021] Figure 2 A cross-sectional view of a device for tissue sample collection provided in an embodiment of this utility model;

[0022] Figure 3 A three-dimensional structural diagram of the cylinder and related parts of a device for tissue sample collection provided in an embodiment of this utility model;

[0023] Figure 4A top view of a device for tissue sample collection provided in an embodiment of this utility model;

[0024] Figure 5 A three-dimensional structural schematic diagram of a punch for a tissue sample collection device provided in an embodiment of this utility model;

[0025] Figure 6 A three-dimensional structural schematic diagram of a first adjusting sleeve and related parts of a device for tissue sample collection provided in an embodiment of this utility model;

[0026] Figure 7 A three-dimensional structural diagram of the second adjusting sleeve and related parts of a device for tissue sample collection provided in an embodiment of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Cylinder body;

[0029] 2. Pressing cylinder;

[0030] 3. Connecting rod;

[0031] 4. Striking rod;

[0032] 5. Cutting head;

[0033] 6. Through hole;

[0034] 7. Elastic components;

[0035] 8. Limiting station;

[0036] 9. Guide sleeve;

[0037] 10. Limit block;

[0038] 11. First adjusting sleeve;

[0039] 12. First groove;

[0040] 13. First initial slot;

[0041] 14. First use slot;

[0042] 15. First adjusting block;

[0043] 16. Second adjusting sleeve;

[0044] 17. Third adjusting sleeve. Detailed Implementation

[0045] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0046] This embodiment provides a device for tissue sample collection, including a cylinder 1, a pressing cylinder 2, a connecting rod 3, a punch 4, and a cutting head 5.

[0047] The pressing cylinder 2 is slidably sleeved inside the cylinder 1, and the first end of the pressing cylinder 2 extends to the outside of the cylinder 1.

[0048] For example, see Figure 1 , Figure 2 , Figure 4 The cylinder 1 has openings at both the top and bottom. A guide sleeve 9 is coaxially fixed on the inner wall of the top of the cylinder 1. The pressing cylinder 2 slides with the guide sleeve 9. A strip-shaped groove is formed on the inner wall of the guide sleeve 9, and the strip-shaped groove is parallel to the axis of the guide sleeve 9. A limiting block 10 is provided on the side wall of the pressing cylinder 2, and the limiting block 10 is adapted to the strip-shaped groove. During assembly, the bottom end of the pressing cylinder 2 is slid into the guide sleeve 9, and the limiting block 10 is embedded in the strip-shaped groove until the limiting block 10 slides below the guide sleeve 9. Then, the pressing cylinder 2 is rotated so that the limiting block 10 is not aligned with the strip-shaped groove. In this way, when the pressing cylinder 2 moves upward, the limiting block 10 will abut against the bottom end of the guide sleeve 9, so that the pressing cylinder 2 cannot move upward and cannot detach from the guide sleeve 9, thus completing the assembly of the pressing cylinder 2.

[0049] The connecting rod 3 is set at the second end of the pressing cylinder 2. The end of the connecting rod 3 away from the pressing cylinder 2 is detachably connected to the punch rod 4. An elastic element 7 is sleeved on the outer side of the connecting rod 3. A limiting platform 8 is provided on the inner side wall of the cylinder 1. The two ends of the elastic element 7 abut against the limiting platform 8 and the pressing cylinder 2 respectively.

[0050] For example, see Figure 2 The connecting rod 3 is coaxially fixed to the bottom end of the pressing cylinder 2. The connecting rod 3 is coaxial with the punch 4, and the bottom end of the connecting rod 3 is screwed to the top end of the punch 4. An annular limiting platform 8 is coaxially fixed on the inner wall of the cylinder 1, and the connecting rod 3 passes through the annular limiting platform 8. The elastic element 7 is a spring, which is sleeved on the outside of the connecting rod 3, and its two ends abut against the limiting platform 8 and the pressing cylinder 2, respectively. When the pressing cylinder 2 is manually pressed down, the connecting rod 3 and the punch 4 can be driven to move down synchronously, at which time the spring is compressed and shortened. When the pressing cylinder 2 is released, the spring returns to its original state and pushes the pressing cylinder 2 up until the limiting block 10 abuts against the guide sleeve 9.

[0051] The cutting head 5 is detachably connected to the cylinder 1. The inner side of the cutting head 5 is provided with a through hole 6, which is aligned with the punch 4.

[0052] For example, see Figure 1-2 The cutting head 5 has an isosceles trapezoidal cross-section, with a small end at the bottom and a large end at the top. The top of the cutting head 5 is screwed to the bottom of the cylinder 1. The cutting head 5 has through holes 6 running vertically through it, which are adapted to the punch 4. When the pressing cylinder 2 is manually pressed downwards, the bottom end of the punch 4 can enter the through hole 6 and occupy the entire through hole 6. The top of the through hole 6 has a chamfered structure to ensure that the bottom end of the punch 4 can quickly enter the through hole 6.

[0053] Based on the above structure, the device provided in this embodiment, when requiring small sample tissue collection, inserts the cutting head 5 into the sample tissue. Part of the sample tissue can enter the through-hole 6 and adhere to the inner wall of the through-hole 6. Then, the cylinder 1 is moved above the receiving container, and by pressing down the pressing cylinder 2, the punch 4 enters the through-hole 6, pushing the sample tissue out of the through-hole 6. The sample tissue falls into the receiving container, thus completing the collection. This device is convenient to operate, low in cost, allows for standardized collection, and reduces tissue sample damage.

[0054] When taking small samples of different diameters, prepare cutting heads 5 of different specifications and matching punches 4 in advance. The internal through holes 6 of the different specifications of cutting heads 5 have different diameters but the same height. Since the connecting rod 3 is screwed to the punch 4, and the cutting head 5 is screwed to the cylinder 1, see [reference needed]. Figure 3 The cutting head 5 can be disassembled at any time, and the punch 4 can be removed from the bottom of the cylinder 1. In this way, by installing the required cutting head 5 and replacing the appropriate punch 4, diverse clinical needs can be met.

[0055] Based on the above technical solution, in the technical solution provided in this embodiment, the connecting rod 3 is provided with a variable diameter section at the end near the punch rod 4;

[0056] For example, see Figure 2 The bottom end of the connecting rod 3 is coaxially fixed with a reducing section, which is a sleeve structure. The outer diameter of the top end of the reducing section is the same as the diameter of the connecting rod 3, while the outer diameter of the bottom end is slightly larger than the diameter of the punch 4. The reducing section has internal threads, and the top end of the punch 4 has external threads. The top end of the punch 4 is screwed to the bottom end of the reducing section. The reducing section prevents the bottom end of the connecting rod 3 from abutting against the limiting platform 8, making assembly more convenient and faster.

[0057] In the technical solution provided in this embodiment, the cutting head 5 is a stainless steel cutting head; the cylinder 1 is a polypropylene cylinder.

[0058] The stainless steel cutting head has high hardness, ensuring sharpness and wear resistance, and is easy to clean. The polypropylene cylinder is chemically inert and corrosion-resistant, effectively extending the service life of the device.

[0059] In the technical solution provided in this embodiment, a first adjusting sleeve 11 is sleeved on the outer side of the punch rod 4, and a first strip groove 12, a first initial groove 13, and a first use groove 14 are provided on the outer side wall of the punch rod 4. A first adjusting block 15 is provided on the inner side wall of the first adjusting sleeve 11. The first adjusting block 15 is adapted to the first strip groove 12, the first initial groove 13, and the first use groove 14. The first initial groove 13 and the first use groove 14 are both connected to the first strip groove 12.

[0060] For example, see Figure 2 , Figure 5-7 The first adjusting sleeve 11 is coaxially slidably sleeved on the outside of the punch rod 4. A first strip groove 12 is provided on the outer wall of the punch rod 4, and the first strip groove 12 is parallel to the axial direction of the punch rod 4. The bottom end of the first strip groove 12 extends to near the bottom end of the punch rod 4, and the top end of the first strip groove 12 extends to the top end of the punch rod 4, i.e., the top end of the first strip groove 12 is open, and the bottom end is closed. A first adjusting block 15 is fixedly provided on the inner wall of the first adjusting sleeve 11. When the first adjusting sleeve 11 slides on the outside of the punch rod 4, the first adjusting block 15 can slide within the first strip groove 12. During assembly, the first adjusting sleeve 11 can be sleeved on from the top end of the punch rod 4.

[0061] Meanwhile, a first initial groove 13 and a first usage groove 14 are coaxially formed on the outer side wall of the punch 4. Both the first initial groove 13 and the first usage groove 14 can be annular grooves or arc-shaped grooves. The first initial groove 13 is located above the first usage groove 14.

[0062] When the bottom end of the first adjusting sleeve 11 is flush with the bottom end of the punch rod 4, the first adjusting block 15 slides to be flush with the first use slot 14. Then, by rotating the first adjusting sleeve 11, the first adjusting block 15 enters the first use slot 14. At this time, the first adjusting block 15 cannot move up or down, that is, the first adjusting sleeve 11 cannot move up or down. The bottom end of the first adjusting sleeve 11 is flush with the bottom end of the punch rod 4, which is equivalent to increasing the diameter of the punch rod 4.

[0063] When it is not necessary to replace the punch 4 and the cutting head 5, slide the first adjusting block 15 until it is flush with the first initial groove 13. Then, by rotating the first adjusting sleeve 11, the first adjusting block 15 is inserted into the first initial groove 13. The first adjusting block 15 cannot move up or down, that is, the first adjusting sleeve 11 cannot move up or down. At this time, the bottom end of the first adjusting sleeve 11 is above the bottom end of the punch 4. When the bottom end of the punch 4 enters the through hole 6, the first adjusting sleeve 11 will not interfere with the cutting head 5, ensuring that the bottom end of the punch 4 can smoothly enter the through hole 6.

[0064] When a larger diameter sample is needed, the cutting head 5 is disassembled, and then the position of the first adjusting sleeve 11 is adjusted so that the bottom end of the first adjusting sleeve 11 is flush with the bottom end of the punch 4, thereby increasing the diameter of the punch 4. In this way, only the cutting head 5 needs to be replaced, without disassembling the punch 4, making the operation simpler and more convenient. It also avoids the need to prepare multiple punches 4 in advance, effectively reducing the number of items on site.

[0065] Furthermore, a second adjusting sleeve 16 is fitted on the outer side of the first adjusting sleeve 11. The outer wall of the first adjusting sleeve 11 is provided with a second strip groove, a second initial groove, and a second use groove. The inner wall of the second adjusting sleeve 16 is provided with a second adjusting block. The second adjusting block is adapted to the second strip groove, the second initial groove, and the second use groove. The second initial groove and the second use groove are both connected to the second strip groove.

[0066] For example, see Figure 2 , Figure 6 , Figure 7 The second adjusting sleeve 16 is coaxially slidably sleeved on the outside of the first adjusting sleeve 11. The outer wall of the first adjusting sleeve 11 has a second strip-shaped groove, which is parallel to the axis of the punch 4. The bottom end of the second strip-shaped groove extends to near the bottom end of the first adjusting sleeve 11, and the top end extends to the top end of the first adjusting sleeve 11, meaning the top end of the second strip-shaped groove is open, and the bottom end is closed. A second adjusting block is fixedly provided on the inner wall of the second adjusting sleeve 16. When the second adjusting sleeve 16 slides outside the first adjusting sleeve 11, the second adjusting block can slide within the second strip-shaped groove. During assembly, the second adjusting sleeve 16 can be fitted onto the first adjusting sleeve 11 from the top end.

[0067] Meanwhile, a second initial groove and a second usage groove are coaxially formed on the outer wall of the first adjusting sleeve 11. Both the second initial groove and the second usage groove can be annular grooves or arc-shaped grooves. The second initial groove is located above the second usage groove.

[0068] When the bottom end of the second adjusting sleeve 16 is flush with the bottom end of the first adjusting sleeve 11, the second adjusting block slides to be flush with the second usage slot. Then, by rotating the second adjusting sleeve 16, the second adjusting block enters the second usage slot. At this point, the second adjusting block cannot move up or down, meaning the second adjusting sleeve 16 cannot move up or down either. When both the second adjusting sleeve 16 and the first adjusting sleeve 11 are flush with the bottom end of the punch 4, it is equivalent to further increasing the diameter of the punch 4.

[0069] When it is not necessary to further increase the diameter of the punch 4, slide the second adjusting block until it is flush with the second initial groove. Then, by rotating the second adjusting sleeve 16, the second adjusting block is inserted into the second initial groove, and the second adjusting sleeve 16 cannot move up or down. At this time, the bottom end of the second adjusting sleeve 16 is above the bottom end of the first adjusting sleeve 11. This way, when the bottom ends of the punch 4 and the first adjusting sleeve 11 enter the through hole 6, the second adjusting sleeve 16 will not interfere with the cutting head 5, ensuring that the bottom ends of the punch 4 and the first adjusting sleeve 11 can smoothly enter the through hole 6.

[0070] When a larger diameter sample is needed, the cutting head 5 is disassembled. Then, by adjusting the positions of the first adjusting sleeve 11 and the second adjusting sleeve 16 so that the bottom ends of the first adjusting sleeve 11 and the second adjusting sleeve 16 are flush with the bottom end of the punch 4, the diameter of the punch 4 can be further increased. In this way, only the cutting head 5 needs to be replaced, without disassembling the punch 4, making the operation simpler and more convenient. It also avoids the need to prepare multiple punches 4 in advance, effectively reducing the number of items on site.

[0071] In other words, the adjustment principle of the second adjusting sleeve 16 is the same as that of the first adjusting sleeve 11.

[0072] Furthermore, a third adjusting sleeve 17 is fitted on the outer side of the second adjusting sleeve 16. The outer wall of the second adjusting sleeve 16 is provided with a third strip groove, a third initial groove, and a third use groove. The inner wall of the third adjusting sleeve 17 is provided with a third adjusting block. The third adjusting block is adapted to the third strip groove, the third initial groove, and the third use groove. The third initial groove and the third use groove are both connected to the third strip groove.

[0073] For example, see Figure 2 , Figure 6 , Figure 7 The third adjusting sleeve 17 is coaxially slidably sleeved on the outside of the second adjusting sleeve 16. The outer wall of the second adjusting sleeve 16 has a third strip-shaped groove, which is parallel to the axis of the punch 4. The bottom end of the third strip-shaped groove extends to near the bottom end of the second adjusting sleeve 16, and the top end extends to the top end of the second adjusting sleeve 16, meaning the top end of the third strip-shaped groove is open, and the bottom end is closed. A third adjusting block is fixedly installed on the inner wall of the third adjusting sleeve 17. When the third adjusting sleeve 17 slides on its outer side, the third adjusting block can slide within the third strip-shaped groove. During assembly, the third adjusting sleeve 17 can be fitted onto the second adjusting sleeve 16 from the top end.

[0074] Meanwhile, a third initial groove and a third usage groove are coaxially formed on the outer wall of the second adjusting sleeve 16. Both the third initial groove and the third usage groove can be annular grooves or arc-shaped grooves. The third initial groove is located above the third usage groove.

[0075] The adjustment principle of the third adjusting sleeve 17 is the same as that of the second adjusting sleeve 16 and the first adjusting sleeve 11.

[0076] For example, the diameter of the punch 4 is 2mm, the outer diameter of the first adjusting sleeve 11 is 4mm, the outer diameter of the second adjusting sleeve 16 is 6mm, and the outer diameter of the third adjusting sleeve 17 is 8mm. This can meet the needs of small sample tissue collection with diameters of 2mm, 4mm, 6mm, and 8mm respectively.

[0077] For example, when a sample tissue with a diameter of 6mm is needed, by selecting a suitable cutting head 5 (the diameter of the through hole 6 is 6mm), and by rotating the second adjusting sleeve 16 and the first adjusting sleeve 11, the second adjusting sleeve 16 and the first adjusting sleeve 11 are made to be flush with the bottom end of the punch 4. At this time, it is equivalent to increasing the diameter of the punch 4 to 6mm, which can meet the needs of small sample tissue with a diameter of 6mm.

[0078] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0080] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0081] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An apparatus for collecting tissue samples, characterized in that, Includes a cylinder (1), a pressing cylinder (2), a connecting rod (3), a punch (4), and a cutting head (5); The pressing cylinder (2) is slidably sleeved inside the cylinder body (1), and the first end of the pressing cylinder (2) extends to the outside of the cylinder body (1); The connecting rod (3) is disposed at the second end of the pressing cylinder (2). The end of the connecting rod (3) away from the pressing cylinder (2) is detachably connected to the punch rod (4). An elastic element (7) is sleeved on the outside of the connecting rod (3). A limiting platform (8) is provided on the inner side wall of the cylinder (1). The two ends of the elastic element (7) abut against the limiting platform (8) and the pressing cylinder (2) respectively. The cutting head (5) is detachably connected to the cylinder (1), and the inner side of the cutting head (5) is provided with a through hole (6), which is aligned with the punch (4).

2. The apparatus for tissue sample collection according to claim 1, characterized in that, The cutting head (5) is threadedly connected to the cylinder (1).

3. The apparatus for tissue sample collection according to claim 1, characterized in that, The connecting rod (3) is threadedly connected to the punch (4).

4. The apparatus for tissue sample collection according to claim 1, characterized in that, The connecting rod (3) has a variable diameter section at one end near the punch (4).

5. The apparatus for tissue sample collection according to claim 1, characterized in that, The cutting head (5) is a stainless steel cutting head.

6. The apparatus for tissue sample collection according to claim 1, characterized in that, The cylinder (1) is a polypropylene cylinder.

7. The apparatus for tissue sample collection according to claim 1, characterized in that, The inner wall of the cylinder (1) is provided with a guide sleeve (9) on the same axis. The pressing cylinder (2) is slidably engaged with the guide sleeve (9). A strip-shaped through groove is provided on the inner wall of the guide sleeve (9). A limiting block (10) is provided on the side wall of the pressing cylinder (2). The limiting block (10) is adapted to the strip-shaped through groove.

8. The apparatus for tissue sample collection according to claim 1, characterized in that, The punch (4) is fitted with a first adjusting sleeve (11) on its outer side. The outer side wall of the punch (4) is provided with a first strip groove (12), a first initial groove (13), and a first use groove (14). The inner side wall of the first adjusting sleeve (11) is provided with a first adjusting block (15). The first adjusting block (15) is adapted to the first strip groove (12), the first initial groove (13), and the first use groove (14). The first initial groove (13) and the first use groove (14) are both connected to the first strip groove (12).

9. The apparatus for tissue sample collection according to claim 8, characterized in that, The first adjusting sleeve (11) is fitted with a second adjusting sleeve (16) on its outer side. The outer wall of the first adjusting sleeve (11) is provided with a second strip groove, a second initial groove, and a second usage groove. The inner wall of the second adjusting sleeve (16) is provided with a second adjusting block. The second adjusting block is adapted to the second strip groove, the second initial groove, and the second usage groove. The second initial groove and the second usage groove are both connected to the second strip groove.

10. The apparatus for tissue sample collection according to claim 9, characterized in that, The second adjusting sleeve (16) is fitted with a third adjusting sleeve (17) on its outer side. The outer wall of the second adjusting sleeve (16) is provided with a third strip groove, a third initial groove, and a third use groove. The inner wall of the third adjusting sleeve (17) is provided with a third adjusting block. The third adjusting block is adapted to the third strip groove, the third initial groove, and the third use groove. The third initial groove and the third use groove are both connected to the third strip groove.

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