Improved biopsy knife

Abstract

The utility model discloses an improved pathological specimen sampling knife for pathological specimen sampling equipment technical field. This sampling knife includes handle, clamp, blade and connecting component, and the clamp includes fixed clamp arm and movable clamp arm, and the fixed clamp arm is connected with handle fixedly, and the fixed clamp arm and movable clamp arm are opposite arrangement, and the movable clamp arm is hinged with fixed clamp arm, the blade is detachably arranged between fixed clamp arm and movable clamp arm, the connecting component includes first connecting piece and second connecting piece, and the first connecting piece is located on fixed clamp arm, and the second connecting piece is located on movable clamp arm, and the first connecting piece is detachably connected with second connecting piece, when the first connecting piece is connected with second connecting piece, the fixed clamp arm and movable clamp arm hold the blade fixedly, when the first connecting piece is separated from second connecting piece, the movable clamp arm can rotate around the hinge shaft to relax the blade. This sampling knife realizes the quick installation and disassembly of the blade through the flip type structure of fixed clamp arm and movable clamp arm.

Description

Technical Field

[0001] This utility model relates to the technical field of pathological specimen collection equipment, and in particular to an improved pathological specimen collection knife. Background Technology

[0002] Pathological specimen collection is a crucial step in pathological diagnosis, and its quality directly affects the representativeness of histological slides and the accuracy of diagnosis. Currently, pathology departments commonly use wooden or plastic scalpel handles, along with disposable pathology blades, to collect fresh or fixed tissue. The collection process typically requires operators to perform precise cutting, zonal sampling, and thickness control within a limited space, while also ensuring safety and cleanliness. However, existing scalpels generally suffer from inconvenient blade replacement, and the blades are prone to tilting or breaking during tightening or disassembly, posing a risk of occupational exposure for medical personnel. Furthermore, if the blades remain exposed after use without being removed and cleaned, it can easily lead to secondary injuries, cross-contamination, or further occupational exposure for medical personnel. Utility Model Content

[0003] This invention provides an improved pathological specimen sampling knife, which aims to solve the problem of inconvenient blade disassembly in the prior art.

[0004] This utility model provides an improved pathological specimen sampling knife, comprising:

[0005] Handle;

[0006] The clamp includes a fixed clamping arm and a movable clamping arm. The fixed clamping arm is connected and fixed to the tool holder. The fixed clamping arm and the movable clamping arm are arranged opposite to each other. The movable clamping arm is hinged to the fixed clamping arm.

[0007] A blade, which is detachably disposed between the fixed clamping arm and the movable clamping arm;

[0008] A connecting assembly, comprising a first connector and a second connector, wherein the first connector is disposed on the fixed clamping arm and the second connector is disposed on the movable clamping arm, and the first connector and the second connector are detachably connected.

[0009] When the first connector is connected to the second connector, the fixed clamping arm and the movable clamping arm clamp and fix the blade; when the first connector is separated from the second connector, the movable clamping arm can rotate around the hinge axis to release the blade.

[0010] In one embodiment, the blade is a metal blade;

[0011] The first connector is a first magnetic attraction component, and the second connector is a second magnetic attraction component;

[0012] When the fixed clamping arm and the movable clamping arm hold the metal blade, the metal blade is magnetically connected to both the first magnetic attraction component and the second magnetic attraction component.

[0013] In one embodiment, the first magnetic suction assembly includes a first outer magnetic suction block and a first inner magnetic suction block. The first outer magnetic suction block is fixedly disposed on the side of the fixing arm away from the metal blade, and the first inner magnetic suction block is fixedly disposed on the side of the fixing arm close to the metal blade.

[0014] The second magnetic suction assembly includes a second outer magnetic suction block and a second inner magnetic suction block. The second outer magnetic suction block is fixedly disposed on the side of the movable clamping arm away from the metal blade, and the second inner magnetic suction block is fixedly disposed on the side of the movable clamping arm close to the metal blade.

[0015] When the fixed clamping arm and the movable clamping arm hold the metal blade, the first inner magnetic block and the second inner magnetic block abut against each other and are magnetically connected to the metal blade. The metal blade is magnetically connected to both the first magnetic assembly and the second magnetic assembly.

[0016] In one embodiment, the top of the metal blade is provided with a top positioning block;

[0017] The first inner magnetic block is located at one end of the fixed clamping arm near the hinge, and the second inner magnetic blocks are both located at one end of the movable clamping arm near the hinge. The first inner magnetic block is provided with a first groove, and the second inner magnetic block is provided with a second groove.

[0018] When the first inner magnetic block and the second inner magnetic block abut against each other, the top positioning block is inserted between the first groove and the second groove.

[0019] In one embodiment, there are multiple first external magnetic blocks and multiple second external magnetic blocks;

[0020] Multiple first external magnetic blocks are evenly arranged on the fixed clamping arm, and multiple second external magnetic blocks are evenly arranged on the movable clamping arm.

[0021] In one embodiment, the first magnetic attraction component further includes a first magnetic isolation ring, which is connected and fixed to the fixed clamping arm, and the first magnetic isolation ring is sleeved on the outside of the first outer magnetic attraction block;

[0022] The second magnetic attraction component also includes a second magnetic isolation ring, which is connected and fixed to the movable clamping arm and is sleeved on the outside of the second outer magnetic attraction block.

[0023] In one embodiment, the first magnetic attraction component further includes a first housing, which is connected and fixed to the fixed clamping arm, and the first housing is provided with the first magnetic shielding ring and the first outer magnetic attraction block;

[0024] The second magnetic attraction assembly also includes a second housing, which is connected and fixed to the movable clamping arm. The second housing contains the second magnetic shielding ring and the second outer magnetic attraction block.

[0025] In one embodiment, the metal blade has side positioning blocks on both opposite side walls;

[0026] The fixed clamping arm is provided with a first positioning groove, and the movable clamping arm is provided with a second positioning groove;

[0027] When the fixed clamping arm and the movable clamping arm hold the blade, the two side positioning blocks are respectively inserted into the first positioning groove and the second positioning groove.

[0028] In one embodiment, the rotation angle between the fixed clamping arm and the movable clamping arm is 0~45°.

[0029] In one embodiment, the fixed clamping arm and / or the movable clamping arm are provided with graduations, which are arranged along the length direction of the modified pathological specimen sampling knife.

[0030] As can be seen from the above technical solutions, this utility model has the following advantages:

[0031] This embodiment provides an improved pathological specimen sampling knife, including a handle, a clamp, a blade, and a connecting assembly. Since the fixed clamping arm is fixedly connected to the handle, and the fixed and movable clamping arms are arranged opposite each other, with the movable clamping arm hinged to the fixed clamping arm, the blade is detachably disposed between the fixed and movable clamping arms. Therefore, during application, when it is necessary to fix the blade to the sampling knife, the movable clamping arm is rotated to clamp the blade with the fixed clamping arm, and the first connecting member is connected to the second connecting member, so that the blade is fixedly clamped by the fixed and movable clamping arms. When it is necessary to remove the blade from the sampling knife, the movable clamping arm is rotated to release the clamping of the blade, and the blade can be detached. Thus, this improved pathological specimen sampling knife, through the aforementioned flip-top structure, achieves rapid installation and removal of the blade, effectively avoiding the blade tilting or breakage problems caused by traditional sampling knives during tightening or disassembly, and reducing the risk of occupational exposure for medical personnel. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0033] Figure 1 A schematic diagram of the overall structure of an improved pathological specimen sampling knife provided in this embodiment of the utility model;

[0034] Figure 2 A longitudinal cross-sectional view of the overall structure of an improved pathological specimen sampling knife provided in this embodiment of the present invention;

[0035] Figure 3 This is a cross-sectional view of the overall structure of an improved pathological specimen sampling knife provided in an embodiment of the present invention.

[0036] Figure label:

[0037] Handle 1;

[0038] Clamp 2; Fixed clamping arm 20; First positioning groove 200; Movable clamping arm 21; Second positioning groove 210; Hinge shaft 22;

[0039] Blade 3; Side positioning block 30; Top positioning block 31;

[0040] Connecting component 4; First connector 40; First outer magnetic block 400; First inner magnetic block 401; First groove 4010; First magnetic shielding ring 402; First outer shell 403; Second connector 41; Second outer magnetic block 410; Second inner magnetic block 411; Second groove 4110; Second magnetic shielding ring 412; Second outer shell 413;

[0041] Scale 5. Detailed Implementation

[0042] This utility model provides an improved pathological specimen sampling knife to solve the technical problem of inconvenient blade disassembly in the prior art.

[0043] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below 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 skilled in the art without creative effort are within the scope of protection of the present utility model.

[0044] Please see Figures 1 to 3 The present invention provides an improved pathological specimen sampling knife, comprising:

[0045] Handle 1;

[0046] The clamp 2 includes a fixed clamping arm 20 and a movable clamping arm 21. The fixed clamping arm 20 is connected and fixed to the tool holder 1. The fixed clamping arm 20 and the movable clamping arm 21 are arranged opposite to each other. The movable clamping arm 21 is hinged to the fixed clamping arm 20.

[0047] Blade 3 is detachably disposed between fixed clamping arm 20 and movable clamping arm 21;

[0048] The connecting component 4 includes a first connecting member 40 and a second connecting member 41. The first connecting member 40 is disposed on the fixed clamping arm 20, and the second connecting member 41 is disposed on the movable clamping arm 21. The first connecting member 40 and the second connecting member 41 are detachably connected.

[0049] When the first connector 40 is connected to the second connector 41, the fixed clamping arm 20 and the movable clamping arm 21 clamp the fixed blade 3; when the first connector 40 is separated from the second connector 41, the movable clamping arm 21 can rotate around the hinge axis 22 to release the blade 3.

[0050] During the disassembly and replacement process in this embodiment, when pathological specimen collection is required, medical personnel place the blade 3 between the fixed clamping arm 20 and the movable clamping arm 21, then flip the movable clamping arm 21 onto the fixed clamping arm 20, and connect the first connecting member 40 and the second connecting member 41 so that the fixed clamping arm 20 and the movable clamping arm 21 clamp the fixed blade 3, allowing medical personnel to perform precise specimen collection using the blade 3. When specimen collection is completed or the blade 3 needs to be replaced, simply separate the first connecting member 40 and the second connecting member 41, and the movable clamping arm 21 can rotate around the hinge axis 22, thereby loosening the clamping of the blade 3. At this time, the used blade 3 can be easily removed and replaced with a new blade 3. Then, the first connecting member 40 and the second connecting member 41 are reconnected so that the fixed clamping arm 20 and the movable clamping arm 21 clamp the new blade 3 again for the next specimen collection operation.

[0051] As can be seen from the above process, the advantage of this embodiment is that by utilizing the flip-top structure of the fixed clamping arm 20 and the movable clamping arm 21, and in conjunction with the connection and separation of the first connecting member 40 and the second connecting member 41, the blade 3 can be quickly installed and replaced. Medical staff can quickly and easily complete the installation and replacement of the blade 3, which greatly saves operation time and improves work efficiency.

[0052] In one specific embodiment, a feasible structure for the handle 1 is further provided, with a body length of approximately 125 mm and a width of approximately 20 mm, made of wood; the outer surface of the handle is provided with an ergonomic arc-shaped anti-slip groove, which can increase friction and reduce hand fatigue and the risk of slippage during material handling.

[0053] In one specific embodiment, such as Figures 1 to 3 As shown, a hinged connection method is further provided for the fixed clamping arm 20 and the movable clamping arm 21. The top of both the fixed clamping arm 20 and the movable clamping arm 21 is provided with a shaft mounting seat. A hinge shaft 22 is keyed between the two shaft mounting seats, and the hinge is realized through the hinge shaft 22. The rotation angle between the fixed clamping arm 20 and the movable clamping arm 21 is 0~45°. This rotation angle can meet the usage requirements in different scenarios and avoid the problem of excessive rotation.

[0054] In one specific embodiment, such as Figure 1 and Figure 3 As shown, to further improve the ease of assembly and disassembly, a detachable connection between the blade 3 and the fixed clamping arm 20 and the movable clamping arm 21 is provided. The blade 3 is a metal blade 3; the first connecting member 40 is a first magnetic attraction component, and the second connecting member 41 is a second magnetic attraction component. When the fixed clamping arm 20 and the movable clamping arm 21 hold the metal blade 3, the metal blade 3 is magnetically connected to both the first and second magnetic attraction components. In specific implementation, medical staff place the metal blade 3 between the fixed clamping arm 20 and the movable clamping arm 21. Due to the magnetic effect of the first and second magnetic attraction components, the metal blade 3 can quickly and firmly connect to both magnetically, achieving rapid installation. When disassembly is required, medical staff only need to apply a certain external force to overcome the magnetic attraction force, and can easily remove the metal blade 3 from between the fixed clamping arm 20 and the movable clamping arm 21 for replacement or cleaning.

[0055] In this embodiment, the specific material for the metal blade 3 is further provided. The metal blade 3 is made of medical-grade martensitic stainless steel. The specific model of medical-grade martensitic stainless steel can be selected, such as 440C, 420HC and 6Cr13MoV, which can withstand high-pressure steam sterilization at 121°C.

[0056] In one embodiment, such as Figure 3As shown, a feasible structure for the first magnetic attraction component and the second magnetic attraction component is further provided. The first magnetic attraction component includes a first outer magnetic attraction block 400 and a first inner magnetic attraction block 401. The first outer magnetic attraction block 400 is fixedly disposed on the side of the fixed clamping arm 20 away from the metal blade 3, and the first inner magnetic attraction block 401 is fixedly disposed on the side of the fixed clamping arm 20 close to the metal blade 3. The second magnetic attraction component includes a second outer magnetic attraction block 410 and a second inner magnetic attraction block 411. The second outer magnetic attraction block 410 is fixedly disposed on the side of the movable clamping arm 21 away from the metal blade 3, and the second inner magnetic attraction block 411 is fixedly disposed on the side of the movable clamping arm 21 close to the metal blade 3. When the fixed clamping arm 20 and the movable clamping arm 21 clamp the metal blade 3, the first inner magnetic block 401 and the second inner magnetic block 411 magnetically abut against each other and are magnetically connected to the metal blade 3. The metal blade 3 is magnetically connected to both the first magnetic assembly and the second magnetic assembly. In specific implementation, when the movable clamping arm 21 rotates relative to the fixed clamping arm 20 to a preset clamping angle, the metal blade 3 will be magnetically connected to multiple magnetic blocks on the inner and outer sides. This forms a multi-point magnetic attraction between the inner magnetic block and the metal blade 3, between the outer magnetic block and the metal blade 3, between the two inner magnetic blocks and between the two outer magnetic blocks, ensuring the stability of the clamping of the metal blade 3 by the fixed clamping arm 20 and the movable clamping arm 21.

[0057] In this embodiment, as Figure 3 As shown, to prevent the metal blade 3 from sliding or shifting during clamping, a connection arrangement structure for the inner magnetic blocks is further provided. A top positioning block 31 is provided on the top of the metal blade 3. The first inner magnetic block 401 is located at the end of the fixed clamping arm 20 near the hinge, and the second inner magnetic blocks 411 are both located at the end of the movable clamping arm 21 near the hinge. The first inner magnetic block 401 has a first groove 4010, and the second inner magnetic block 411 has a second groove 4110. When the first inner magnetic block 401 and the second inner magnetic block 411 magnetically abut against each other, the top positioning block... 31 is inserted between the first groove 4010 and the second groove 4110. In specific implementation, during installation, the metal blade 3 can be placed into the first groove 4010 first. When the first inner magnetic block 401 and the second inner magnetic block 411 approach each other and generate magnetic attraction, the top positioning block 31 will be accurately embedded in the space formed by the first groove 4010 and the second groove 4110, which facilitates quick alignment of the blade edge, improves assembly efficiency, enhances the connection stability between the metal blade 3 and the clamping arm, and effectively prevents the metal blade 3 from sliding or shifting during clamping.

[0058] In this embodiment, as Figure 1As shown, a connection arrangement structure for the external magnetic blocks is further provided. There are multiple first external magnetic blocks 400 and multiple second external magnetic blocks 410. Multiple first external magnetic blocks 400 are evenly arranged on the fixed clamping arm 20, and multiple second external magnetic blocks 410 are evenly arranged on the movable clamping arm 21. Specifically, multiple first external magnetic blocks 400 are evenly arranged along the length direction of the modified pathological specimen sampling knife, and multiple second external magnetic blocks 410 are evenly arranged along the length direction of the modified pathological specimen sampling knife. Furthermore, the first external magnetic blocks 400 and second external magnetic blocks 410 on both sides can be arranged in a one-to-one correspondence, so that the first external magnetic blocks 400 and second external magnetic blocks 410 on both sides magnetically attract each other, further enhancing the clamping stability of the clamping arm on the metal blade 3. Even under large external forces, it can effectively prevent the metal blade 3 from loosening or falling off. In specific implementation, this magnetic force distribution is more uniform, and there will be no situation where the local force is too large or too small, improving the overall reliability and stability of the sampling knife.

[0059] Based on the above embodiments, the materials of the first outer magnetic block 400, the second outer magnetic block 410, the first inner magnetic block 401, and the second inner magnetic block 411 are further provided. The first outer magnetic block 400, the second outer magnetic block 410, the first inner magnetic block 401, and the second inner magnetic block 411 are all made of high-strength neodymium iron boron magnets (about 3-4 mm thick, 1 mm thick). The blade is tightly attached to the positioning surface by magnetic attraction, ensuring that the blade does not shift or loosen during the material handling process. In addition, in order to prevent magnetic attenuation or metal shavings from being attracted by long-term use, the outer surface of the magnetic blocks is encapsulated with an epoxy protective layer, which can withstand high-pressure steam sterilization at 121°C.

[0060] In one embodiment, such as Figure 3As shown, to concentrate the magnetic force of the outer magnetic block on the blade contact area and avoid affecting other metal utensils, the first magnetic assembly also includes a first magnetic shielding ring 402, which is connected and fixed to the fixed clamping arm 20 and is sleeved on the outside of the first outer magnetic block 400. The second magnetic assembly also includes a second magnetic shielding ring 412, which is connected and fixed to the movable clamping arm 21 and is sleeved on the outside of the second outer magnetic block 410. The number of the first magnetic shielding ring 402 and the second magnetic shielding ring 412 are respectively matched with the number of the first outer magnetic block 400 and the second outer magnetic block 410, so that each first outer magnetic block... Both the suction block 400 and the second outer magnetic suction block 410 are equipped with magnetic isolation rings. The first magnetic isolation ring 402 and the second magnetic isolation ring 412 are made of materials with high magnetic permeability and low magnetic loss. In specific implementation, when the first outer magnetic suction block 400 and the second outer magnetic suction block 410 generate magnetic force, the first magnetic isolation ring 402 and the second magnetic isolation ring 412 can limit the magnetic force to a specific range, reduce the diffusion of magnetic force into the surrounding space, enhance the clamping magnetic force of the clamping arm on the metal blade 3, avoid unnecessary magnetic attraction to other metal tools in the surrounding area, ensure the safety and stability of the material handling knife during use, and prevent operational errors or equipment damage due to magnetic interference.

[0061] Based on the above embodiments, such as Figure 3 As shown, in order to extend the service life of the outer magnetic block, the first magnetic assembly also includes a first housing 403, which is connected and fixed to the fixed clamping arm 20. The first housing 403 is provided with a first magnetic shielding ring 402 and a first outer magnetic block 400. The second magnetic assembly also includes a second housing 413, which is connected and fixed to the movable clamping arm 21. The second housing 413 is provided with a second magnetic shielding ring 412 and a second outer magnetic block 410. In specific implementation, the first housing 403 and the second housing 413 are both made of sturdy and durable materials, which can effectively resist external collisions and friction, and prevent the first outer magnetic block 400, the second outer magnetic block 410, the first magnetic shielding ring 402 and the second magnetic shielding ring 412 from being damaged. At the same time, the sealing design of the first housing 403 and the second housing 413 can also prevent dust, moisture and other impurities from entering the interior, avoid these impurities from having an adverse effect on the performance of the magnetic assembly, and extend the service life of each component.

[0062] In one embodiment, such as Figure 3As shown, in order to further prevent the metal blade 3 from sliding or shifting during clamping, side positioning blocks 30 are provided on both opposite side walls of the metal blade 3; a first positioning groove 200 is provided on the fixed clamping arm 20, and a second positioning groove 210 is provided on the movable clamping arm 21; when the fixed clamping arm 20 and the movable clamping arm 21 clamp the blade 3, the two side positioning blocks 30 are respectively inserted into the first positioning groove 200 and the second positioning groove 210; in specific installation, the side positioning blocks 30 of the metal blade 3 are inserted into the first positioning groove 200 of the fixed clamping arm 20 to ensure that they fit tightly during clamping and effectively prevent the metal blade 3 from sliding or shifting.

[0063] In this embodiment, the side positioning block 30 and the corresponding first positioning groove 200 and second positioning groove 210 are matched in shape and are both waist-shaped structures.

[0064] In one specific embodiment, such as Figure 1 As shown, to facilitate observation of the sampling length, the fixed clamping arm 20 and / or the movable clamping arm 21 are both equipped with a scale 5. The scale 5 is 70 mm long and is used to quickly measure the sampling depth or tissue size. The scale 5 is arranged along the length direction of the modified pathological specimen sampling knife. The scale 5 line is made by laser etching, which is corrosion resistant and will not fall off. It can withstand multiple high temperature and high pressure sterilizations. In practice, the user can accurately grasp the sampling length by observing the scale 5 to ensure the accuracy of the sampling.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

[0067] Finally, it should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. An improved pathological specimen sampling knife, characterized in that, include: Handle; The clamp includes a fixed clamping arm and a movable clamping arm. The fixed clamping arm is connected and fixed to the tool holder. The fixed clamping arm and the movable clamping arm are arranged opposite to each other. The movable clamping arm is hinged to the fixed clamping arm. A blade, which is detachably disposed between the fixed clamping arm and the movable clamping arm; A connecting assembly, comprising a first connector and a second connector, wherein the first connector is disposed on the fixed clamping arm and the second connector is disposed on the movable clamping arm, and the first connector and the second connector are detachably connected. When the first connector is connected to the second connector, the fixed clamping arm and the movable clamping arm clamp and fix the blade; when the first connector is separated from the second connector, the movable clamping arm can rotate around the hinge axis to release the blade.

2. The improved pathological specimen sampling knife according to claim 1, characterized in that: The blade is a metal blade; The first connector is a first magnetic attraction component, and the second connector is a second magnetic attraction component; When the fixed clamping arm and the movable clamping arm hold the metal blade, the metal blade is magnetically connected to both the first magnetic attraction component and the second magnetic attraction component.

3. The improved pathological specimen sampling knife according to claim 2, characterized in that: The first magnetic attraction component includes a first outer magnetic attraction block and a first inner magnetic attraction block. The first outer magnetic attraction block is fixedly disposed on the side of the fixing arm away from the metal blade, and the first inner magnetic attraction block is fixedly disposed on the side of the fixing arm close to the metal blade. The second magnetic suction assembly includes a second outer magnetic suction block and a second inner magnetic suction block. The second outer magnetic suction block is fixedly disposed on the side of the movable clamping arm away from the metal blade, and the second inner magnetic suction block is fixedly disposed on the side of the movable clamping arm close to the metal blade. When the fixed clamping arm and the movable clamping arm hold the metal blade, the first inner magnetic block and the second inner magnetic block abut against each other and are magnetically connected to the metal blade. The metal blade is magnetically connected to both the first magnetic assembly and the second magnetic assembly.

4. The improved pathological specimen sampling knife according to claim 3, characterized in that: The top of the metal blade is provided with a top positioning block; The first inner magnetic block is located at one end of the fixed clamping arm near the hinge, and the second inner magnetic blocks are both located at one end of the movable clamping arm near the hinge. The first inner magnetic block is provided with a first groove, and the second inner magnetic block is provided with a second groove. When the first inner magnetic block and the second inner magnetic block abut against each other, the top positioning block is inserted between the first groove and the second groove.

5. The improved pathological specimen sampling knife according to claim 3, characterized in that, There are multiple first external magnetic blocks and multiple second external magnetic blocks; Multiple first external magnetic blocks are evenly arranged on the fixed clamping arm, and multiple second external magnetic blocks are evenly arranged on the movable clamping arm.

6. The improved pathological specimen sampling knife according to claim 3, characterized in that: The first magnetic attraction component further includes a first magnetic isolation ring, which is connected and fixed to the fixed clamping arm, and the first magnetic isolation ring is sleeved on the outside of the first outer magnetic attraction block; The second magnetic attraction component also includes a second magnetic isolation ring, which is connected and fixed to the movable clamping arm and is sleeved on the outside of the second outer magnetic attraction block.

7. The improved pathological specimen sampling knife according to claim 6, characterized in that: The first magnetic attraction assembly further includes a first housing, which is connected and fixed to the fixed clamping arm. The first housing contains the first magnetic shielding ring and the first outer magnetic attraction block. The second magnetic attraction component also includes a second housing, which is connected and fixed to the movable clamping arm. The second housing contains the second magnetic shielding ring and the second outer magnetic attraction block.

8. The improved pathological specimen sampling knife according to claim 2, characterized in that, The metal blade has side positioning blocks on both opposite side walls; The fixed clamping arm is provided with a first positioning groove, and the movable clamping arm is provided with a second positioning groove; When the fixed clamping arm and the movable clamping arm hold the blade, the two side positioning blocks are respectively inserted into the first positioning groove and the second positioning groove.

9. The improved pathological specimen sampling knife according to claim 1, characterized in that, The included angle of rotation between the fixed clamping arm and the movable clamping arm is 0~45°.

10. The improved pathological specimen sampling knife according to claim 1, characterized in that, The fixed clamping arm and / or the movable clamping arm are both provided with graduations, which are arranged along the length direction of the modified pathological specimen sampling knife.

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