An adjustable-size biopsy needle bonding fixture

Abstract

This utility model discloses an adjustable-size biopsy needle bonding fixture, designed to accommodate biopsy needles of different diameters. The fixture includes a base plate and a support seat on the base plate for holding the biopsy needle base; an adjusting rod vertically mounted on the base plate with a slide rail; a first fixing module slidably mounted on the adjusting rod; and a second fixing module slidably mounted on the first fixing module. Both modules have opposing clamping grooves and abutment ridges, forming holes for clamping the biopsy needle body, with the support seat coaxial with the holes; and a driving mechanism mounted on either the first or second fixing module for adjusting the diameter of the holes in the clamping grooves and abutment ridges. This design, by changing the hole size through the driving mechanism, flexibly adapts to biopsy needles of different diameters, eliminating the need for specialized fixtures for each diameter. It allows for precise control and adjustment, ensuring the biopsy needle is firmly and stably clamped during bonding. It also eliminates manual adjustment, ensuring consistency and accuracy in adjustment and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a tooling for bonding biopsy needles with adjustable size. Background Technology

[0002] In the medical field, biopsy needles, as key medical devices, play an indispensable role in the collection of various tissue samples. Biopsy needles typically consist of an inner needle and an outer needle. In practical applications, the biopsy needle must be precisely bonded to the plastic shell to ensure the stability and accuracy of the biopsy needle in subsequent operations, guaranteeing a smooth and efficient biopsy process.

[0003] Maintaining coaxiality between the biopsy needle and its plastic casing is crucial during the bonding process. If the bonding is misaligned, the biopsy needle will deviate during puncture and other procedures, failing to accurately reach the target tissue. This not only severely impacts the quality of the collected sample but may also cause unnecessary harm to the patient.

[0004] Currently, existing biopsy needle bonding fixtures generally employ a combination structure of a pad, a positioning plate, and a fixing plate. This structure can, to a certain extent, position the biopsy needle and the plastic shell, achieving coaxial bonding. However, its limitations are also significant. Because different biopsy needles have different tube diameters, existing fixtures cannot be flexibly adjusted to accommodate these variations. Each biopsy needle with a specific diameter requires a fixture of a different aperture, leading to the need to prepare multiple fixtures of different specifications during actual production, thus increasing production costs and management complexity. Furthermore, when encountering non-standard diameter biopsy needles, existing fixtures may not meet bonding requirements, severely limiting production flexibility and adaptability, and failing to meet the diversified, small-batch, and high-efficiency requirements of modern medical device production. Utility Model Content

[0005] The purpose of this invention is to disclose a size-adjustable biopsy needle bonding fixture that can adapt to the bonding of biopsy needles of different diameters.

[0006] To achieve the above objectives, this utility model discloses an adjustable-size biopsy needle bonding fixture, comprising: a base plate, on which a support seat is provided for placing the base of the biopsy needle; an adjusting rod, which is vertically disposed on the base plate and has a slide rail along its length; a first fixing module, which is slidably disposed on the adjusting rod; a second fixing module, which is slidably disposed on the first fixing module, wherein the first fixing module and the second fixing module are provided with a clamping groove and an abutment ridge facing each other, and a hole for clamping and fixing the biopsy needle is formed between the clamping groove and the abutment ridge, and the support seat is coaxially disposed with the hole; and a driving mechanism, which is assembled on the first fixing module or the second fixing module and is used to adjust the diameter of the hole between the clamping groove and the abutment ridge.

[0007] By adopting the above solution, and by setting a drive mechanism to adjust the clamping gap between the clamping groove and the abutment edge, the size of the hole for clamping and fixing the biopsy needle body can be changed. This allows for flexible adaptation to biopsy needles of different diameters, eliminating the need for special tooling for each type of biopsy needle. The drive mechanism can precisely control the adjustment of the hole diameter between the clamping groove and the abutment edge, ensuring that the biopsy needle is firmly and stably clamped during the pasting process. The automatic adjustment of the clamping hole size by the drive mechanism eliminates the tedious process of manual adjustment, avoids interference from human factors, ensures the consistency and accuracy of each adjustment, greatly shortens the adjustment time, speeds up the pace of the entire production process, and effectively improves production efficiency.

[0008] Furthermore, the first fixed module includes: a sliding channel, in which the adjusting rod passes through; an assembly groove, in which the driving mechanism is assembled; and a first clamping surface, which is provided with a plurality of clamping grooves, and the plurality of clamping grooves are spaced apart and arranged in parallel.

[0009] By adopting the above scheme, the adjusting rod passes through the sliding channel, allowing the first fixing module to slide smoothly along the adjusting rod. This facilitates adjustment of the longitudinal height of the first fixing module, adapting to the assembly of biopsy needles of different lengths or bonding positions with the plastic shell. The sliding channel provides a certain degree of enclosure and guidance for the adjusting rod, effectively reducing swaying and offset during the sliding of the first fixing module, thus enhancing the stability of the entire structure. The drive mechanism is assembled in the assembly slot, providing a dedicated installation space for it, making the installation process more standardized and convenient. Multiple spaced and parallel clamping slots can provide clamping spaces of different sizes, accommodating biopsy needles of various diameters. This reduces tooling changeover time during production and improves production efficiency.

[0010] Furthermore, the second fixing module includes: a second clamping surface, the second clamping surface being provided with a plurality of abutment edges, the abutment edges corresponding one-to-one with the clamping groove; and a sliding block, one end of the sliding block being fixed to the second clamping surface, and the other end being fixed to the driving end of the driving mechanism.

[0011] By adopting the above scheme, precise clamping and matching can be provided for biopsy needles of different diameters. Each clamping groove and the corresponding abutment edge can form a clamping space of a specific size, thereby accommodating biopsy needles of various specifications. The sliding block, as a component connecting the second clamping surface and the drive end of the drive mechanism, can accurately and stably transmit the power generated by the drive mechanism to the second clamping surface.

[0012] Furthermore, a sliding groove is formed in the inner recess of the first clamping surface, and the sliding block is slidably disposed in the sliding groove.

[0013] By adopting the above scheme, the sliding groove provides a clear and fixed motion trajectory for the sliding block. When the drive mechanism moves the sliding block, the sliding block can only move in a straight line along the extension direction of the sliding groove, without any deviation or wobbling.

[0014] Furthermore, the orthographic projection of the clamping groove on the base plate is U-shaped, and the orthographic projection of the abutting edge on the base plate is U-shaped.

[0015] By adopting the above scheme, the U-shaped design makes the contact surface between the clamping groove and the abutment edge and the biopsy needle no longer a simple line or point contact, but forms a relatively large arc-shaped contact surface, which can distribute the clamping force more evenly, avoid the biopsy needle from deforming or being damaged due to excessive local force, and at the same time improve the stability of clamping, ensuring that the biopsy needle will not easily shake or shift during the pasting process.

[0016] Furthermore, the distance between the two side walls of the clamping groove gradually increases from the inside of the groove to the outside, and similarly, the abutting edge is adapted to the clamping groove.

[0017] By adopting the above scheme, the distance between the two side walls of the clamping groove gradually increases from the inside to the outside, forming a gradient clamping structure. When the biopsy needle is placed in the clamping groove, as the abutment edge gradually approaches and fits into the clamping groove, the clamping force gradually increases from the end of the biopsy needle as the distance decreases. This gradient clamping force can be more evenly distributed on the surface of the biopsy needle, avoiding local stress concentration, thereby fixing the biopsy needle more firmly in the clamping groove, effectively preventing the biopsy needle from sliding or rotating during the pasting process, and ensuring the accuracy of the pasting position. For biopsy needles with smaller diameters, it can penetrate into the narrower part of the clamping groove, achieving stable clamping through the tight fit of the two side walls; while for biopsy needles with larger diameters, a suitable clamping position can be found in the wider outer part of the clamping groove. This good adaptability allows the fixture to meet the pasting needs of various sizes of biopsy needles without frequent fixture changes, improving the versatility and flexibility of the fixture.

[0018] Furthermore, the sliding channel is provided with a protruding ridge, and the track of the adjusting rod is a groove adapted to the protruding ridge.

[0019] By adopting the above scheme, the cooperation between the protruding ridge and the groove provides precise guidance for the movement of the adjusting rod within the sliding channel. The protruding ridge, placed within the sliding channel, is equivalent to adding a reinforcing rib to the channel's structure. This improves the sliding channel's resistance to deformation, making it less prone to deformation or damage when subjected to the forces and friction generated by the moving adjusting rod.

[0020] Furthermore, the first fixing module is provided with a fixing hole perpendicular to the sliding channel, and the adjusting rod is locked and fixed to the first fixing module by a fixing member passing through the fixing hole.

[0021] By adopting the above solution, the positional accuracy of the adjusting rod directly affects the clamping and bonding position of the biopsy needle during the bonding process between the biopsy needle and the plastic shell. After the first fixing module slides longitudinally along the adjusting rod to the appropriate position, the adjusting rod can be firmly fixed in that position by inserting the fixing piece into the fixing hole and locking it, preventing it from shifting in subsequent operations.

[0022] Furthermore, the first fixing module includes: a sliding channel, in which the adjusting rod passes through; an assembly groove, in which the driving mechanism is assembled; and a first clamping plate, wherein the side of the first clamping plate away from the sliding channel is a first clamping surface, and the first clamping surface is provided with a plurality of clamping grooves, which are spaced apart and arranged in parallel.

[0023] By adopting the above solution and adding a first clamping plate, the clamping adjustment flexibility is improved, achieving a dual-sided adjustable effect.

[0024] Furthermore, the driving mechanism includes a first driving member and a second driving member. The first driving member is assembled in the assembly slot, and the driving shaft of the first driving member is drivenly connected to the second fixed module. The second driving member is assembled on the first fixed module, and the driving shaft of the second driving member is drivenly connected to the first clamping plate.

[0025] By adopting the above scheme, the first driving component drives the second fixing module, and the second driving component drives the first clamping plate. The two driving components work independently and can control the movement of different components separately. When the first driving component drives the second fixing module to position and fix the plastic shell, the second driving component can simultaneously drive the first clamping plate to clamp and adjust the biopsy needle. Distributing the driving task to the two driving components can distribute the load of the entire driving system.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Traditional tooling is limited by a fixed aperture and can only accommodate biopsy needles of a specific diameter. This tooling, however, adjusts the aperture diameter between the clamping groove and the abutment edge via a drive mechanism, allowing for flexible changes in the clamping aperture size. Whether the biopsy needle has a standard or non-standard diameter, it can be precisely attached to this tooling, greatly expanding its applicability and meeting the diverse needs of modern medical device manufacturing. 2. The drive mechanism automatically adjusts the size of the clamping hole, eliminating the tedious process of manual adjustment. Manual adjustment not only requires a lot of time for measurement and debugging, but is also prone to errors. The drive mechanism can quickly and accurately adjust the hole diameter, greatly shortening the adjustment time, speeding up the pace of the entire production process, and reducing production interruption time caused by changing tooling or adjusting equipment; 3. It allows operators to adjust the hole diameter through simple control buttons or programs, without the need for complex professional skills and extensive operating experience, thus reducing the requirements for operators, reducing training costs and time, and improving work efficiency; 4. Traditional production methods require different dedicated tooling for each biopsy needle diameter, which not only increases the procurement cost of tooling but also occupies a large amount of storage space. This adjustable tooling can replace multiple dedicated tooling options, reducing the number of tooling components and lowering procurement and storage costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is a partial exploded structural diagram of an embodiment of the present invention; Figure 3 This is an exploded structural diagram of another embodiment of the present utility model; Figure 4 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 5 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0029] Key reference numerals in the attached drawings: 1. Base plate; 11. Support base; 2. Biopsy needle; 21. Base support; 22. Needle body; 3. Adjusting rod; 31. Slide rail; 4. First fixing module; 41. Clamping groove; 42. Sliding channel; 421. Protruding ridge; 43. Assembly groove; 44. First clamping surface; 45. Sliding groove; 46. Fixing hole; 47. First clamping plate; 5. Second fixing module; 51. Abutment ridge; 52. Sliding block; 6. Hole position; 7. Drive mechanism; 71. First drive component; 72. Second drive component. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0035] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0036] Please refer to Embodiment 1 of this utility model. Figures 1 to 5 As shown, an adjustable biopsy needle 2 bonding fixture is provided, including a base plate 1, a support base 11, an adjusting rod 3, a first fixing module 4, a second fixing module 5, and a driving mechanism 7. It can accurately clamp biopsy needles 2 of different diameters and coaxially bond them with plastic shells, meeting the requirements of diversified, small-batch, and high-efficiency production of modern medical devices.

[0037] Specifically, the base plate 1 serves as the foundation for the entire tooling, providing an installation base for other components and ensuring the overall stability of the tooling. Multiple support seats 11 are provided on the base plate 1, which hold the base 21 of the biopsy needle 2. The adjusting rod 3 is vertically mounted on the base plate 1 via a base or directly fixed. A slide rail 31 is provided along the length of the adjusting rod 3, i.e., the vertical direction. Optionally, the slide rail 31 can be a rectangular rail, a dovetail groove, or a T-slot, etc. The first fixing module 4 is slidably fitted onto the adjusting rod 3 via an internal sliding channel 42 and can slide up and down along the slide rail 31 to adjust its overall height. The inner wall of the sliding channel 42 preferably has a protruding rib 421, which matches the slide rail 31 (i.e., the groove) on the adjusting rod 3 to form a sliding pair. This ensures smooth sliding and effectively prevents the first fixing module 4 from rotating or shaking in the horizontal plane, ensuring accurate movement trajectory. To fix the first fixed module 4 at the required height, a fixing hole 46 is provided on its side perpendicular to the sliding channel 42. A locking fastener is inserted into the fixing hole 46. Bolts, set screws, etc. can be selected. By tightening the fastener, the first fixed module 4 and the adjusting rod 3 can be locked and fixed.

[0038] In this embodiment 1, the first fixing module 4 further includes an assembly groove 43 and a first clamping surface 44. The driving mechanism 7 adopts an electric push rod, a lead screw and nut mechanism driven by a stepper motor, or a pneumatic cylinder, etc., and is fixedly installed in the assembly groove 43. The first clamping surface 44 is the side wall of the first fixing module 4 facing the second fixing module 5. Multiple spaced and parallel clamping grooves 41 are machined on the first clamping surface 44. The second fixing module 5 is arranged facing the first fixing module 4 and includes a second clamping surface and a sliding block 52. The second clamping surface is the side wall of the second fixing module 5 facing the first fixing module 4. Multiple abutment ridges 51 corresponding one-to-one with the clamping grooves 41 are provided on the second clamping surface. Preferably, the orthographic projection of the clamping groove 41 on the base plate 1 is U-shaped, and its structure is designed such that the distance between its two side walls gradually increases from the deepest part of the groove to the outside of the groove opening, forming a trumpet-shaped opening. This gradient design facilitates the guidance and accommodation of needles 22 of different diameters. The projection of the abutting edge 51 onto the base plate 1 is also U-shaped, and its shape is adapted to the clamping groove 41. This allows the abutting edge 51 to, when close to the clamping groove 41, together form a nearly circular clamping hole 6 for clamping the biopsy needle 2 body 22. The support base 11 is coaxially positioned with the clamping hole 6 to ensure good coaxiality between the biopsy needle 2 and the plastic shell during the pasting process, ensuring the directional accuracy of the biopsy needle 2 during subsequent puncture and other operations. One end of the sliding block 52 is fixedly connected to the second clamping surface, and the other end is fixedly connected to the driving end of the driving mechanism 7. The driving end of the driving mechanism 7 can be a piston rod of a push rod or a nut of a lead screw. It should be noted that, to ensure the parallel adjustment of the second clamping surface of the second fixing module 5 to the first clamping surface 44, two driving mechanisms 7 can be symmetrically arranged to achieve a synchronous and stable pushing effect on the second fixing module 5.

[0039] In some embodiments, to provide precise guidance for the second fixing module 5, a sliding groove 45 is recessed into the inner side of the first clamping surface 44 of the first fixing module 4. The sliding block 52 is slidably disposed in the sliding groove 45, ensuring that the second fixing module 5 can move linearly in a direction perpendicular to the axis of the adjusting rod 3 under the drive of the driving mechanism 7, thereby precisely adjusting the diameter of the hole 6 between the clamping groove 41 and the abutment ridge 51.

[0040] It should be noted that the central axis of the support base 11 and the central axis of the hole 6 formed by the clamping groove 41 and the abutment ridge 51 are coaxially arranged to ensure that the biopsy needle body 22 being clamped and the base 21 placed on the support base 11 have a very high degree of coaxiality.

[0041] See Figure 5As shown, in some embodiments, to further improve clamping flexibility, a movable first clamping plate 47 is provided on the side of the first fixing module 4 facing the second clamping surface. Specifically, the driving mechanism 7 includes two independent driving components: a first driving component 71 and a second driving component 72. The first driving component 71 is fixedly installed in the assembly groove 43, and its drive shaft is drivenly connected to the sliding block 52 of the second fixing module 5 to control the movement of the second fixing module 5, thereby mainly adjusting the positioning and clamping of one side of the biopsy needle 2. The second driving component 72 is assembled on the main body of the first fixing module 4, arranged parallel to or offset to one side of the first driving component 71, and its drive shaft is drivenly connected to the first clamping plate 47 to control the movement of the first clamping plate 47 and the clamping groove 41 thereon, thereby mainly adjusting the clamping of the biopsy needle 2 needle body 22. This dual-sided independent driving design realizes bidirectional precise adjustment of the diameter of the hole 6, with greater flexibility and adaptability.

[0042] In use, first, according to the length of the biopsy needle 2 to be pasted, loosen the locking fastener in the fixing hole 46, slide the first fixing module 4 up and down to the appropriate height position, and then re-lock it. Then, place the base 21 of the biopsy needle 2 on the support base 11. Place the needle body 22 of the biopsy needle 2 into a clamping groove 4135 of the first clamping surface 44, and simultaneously align and bring the plastic shell component to be pasted closer together. Activate the first drive unit 71 and the second drive unit 72. The first drive unit 71 drives the second fixing module 5 to move towards the first fixing module 4, so that its abutting edge 51 approaches the corresponding clamping groove 41; simultaneously, the second drive unit 72 can drive the first clamping plate 47 to make a fine adjustment, so that the clamping groove 41 can also actively adapt to the needle body 22. The two move towards each other until the clamping groove 41 and the abutting edge 51 firmly clamp the biopsy needle body 22 and the plastic shell in the middle, forming a clamping hole 6 of the right size and with the center aligned. Maintain this state and perform bonding operations such as dispensing and curing. After bonding is complete, the drive mechanism 7 moves in the opposite direction to release the clamps, allowing the assembled product to be removed.

[0043] With stepless adjustment via the drive mechanism 7, this fixture can adapt to the bonding needs of a range of biopsy needles 2 with different diameters, from standard to non-standard, making it highly versatile.

[0044] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A tooling for bonding a biopsy needle (2) with an adjustable size, characterized in that, include: A base plate (1) is provided with a support seat (11) for placing the base (21) of the biopsy needle (2); Adjusting rod (3), the adjusting rod (3) is vertically arranged on the base plate (1), and the adjusting rod (3) is provided with a slide rail (31) along its length direction; The first fixed module (4) is slidably mounted on the adjusting rod (3); The second fixing module (5) slides on the first fixing module (4), and the first fixing module (4) and the second fixing module (5) are provided with clamping grooves (41) and abutment edges (51) facing each other. A hole (6) for clamping and fixing the needle body (22) of the biopsy needle (2) is formed between the clamping groove (41) and the abutment edge (51). The support base (11) is coaxially arranged with the hole (6). A drive mechanism (7) is mounted on the first fixed module (4) or the second fixed module (5) for adjusting the diameter of the hole (6) between the clamping groove (41) and the abutment edge (51).

2. The size-adjustable biopsy needle (2) bonding fixture according to claim 1, characterized in that, The first fixed module (4) includes: The sliding channel (42) is through which the adjusting rod (3) passes; Assembly slot (43), the drive mechanism (7) is assembled in the assembly slot (43); The first clamping surface (44) is provided with a plurality of clamping grooves (41), and the plurality of clamping grooves (41) are spaced apart and arranged in parallel.

3. The size-adjustable biopsy needle (2) bonding fixture according to claim 2, characterized in that, The second fixed module (5) includes: The second clamping surface is provided with a plurality of abutting edges (51), and the abutting edges (51) correspond one-to-one with the clamping grooves (41); The sliding block (52) has one end fixed to the second clamping surface and the other end fixed to the driving end of the driving mechanism (7).

4. The size-adjustable biopsy needle (2) bonding fixture according to claim 3, characterized in that, The first clamping surface (44) has a recessed sliding groove (45), and the sliding block (52) is slidably disposed in the sliding groove (45).

5. The size-adjustable biopsy needle (2) bonding fixture according to claim 1, characterized in that, The orthographic projection of the clamping groove (41) on the base plate (1) is U-shaped, and the orthographic projection of the abutting edge (51) on the base plate (1) is U-shaped.

6. The size-adjustable biopsy needle (2) bonding fixture according to claim 5, characterized in that, The distance between the two side walls of the clamping groove (41) gradually increases from the inside of the groove to the outside. Similarly, the abutting edge (51) is adapted to the clamping groove (41).

7. The size-adjustable biopsy needle (2) bonding fixture according to claim 2, characterized in that, The sliding channel (42) is provided with a protruding ridge (421), and the track of the adjusting rod (3) is a groove that fits the protruding ridge (421).

8. The size-adjustable biopsy needle (2) bonding fixture according to claim 2, characterized in that, The first fixing module (4) is provided with a fixing hole (46) perpendicular to the sliding channel (42). The adjusting rod (3) is locked and fixed to the first fixing module (4) by a fixing member passing through the fixing hole (46).

9. The size-adjustable biopsy needle (2) bonding fixture according to claim 1, characterized in that, The first fixed module (4) includes: The sliding channel (42) is through which the adjusting rod (3) passes; Assembly slot (43), the drive mechanism (7) is assembled in the assembly slot (43); The first clamping plate (47) has a first clamping surface (44) on the side away from the sliding channel (42). The first clamping surface (44) is provided with a plurality of clamping grooves (41), and the plurality of clamping grooves (41) are spaced apart and arranged in parallel.

10. The size-adjustable biopsy needle (2) bonding fixture according to claim 9, characterized in that, The driving mechanism (7) includes a first driving member (71) and a second driving member (72). The first driving member (71) is assembled in the assembly slot (43), and the driving shaft of the first driving member (71) is driven connected to the second fixed module (5). The second driving member (72) is assembled on the first fixed module (4), and the driving shaft of the second driving member (72) is driven connected to the first clamping plate (47).

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