Biopsy sampling power handle and biopsy device
By introducing a sliding electrode and elastic element into the biopsy sampling power handle, the problem of poor electrode contact in the biopsy device was solved, the stability and reliability of the electrical connection were achieved, and the performance during the operation was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2026-03-10
AI Technical Summary
In existing biopsy devices, poor electrode contact between the handle and the biopsy needle leads to unstable electrical connections.
A biopsy sampling power handle is designed, comprising a handle assembly, a first electrode, and an elastic element. The first electrode slides within the mounting hole of the handle assembly, and the elastic element connects the first electrode and the handle assembly. When the biopsy needle is assembled, the elastic element deforms to provide elastic force, ensuring that the first electrode and the docking electrode of the biopsy needle are in close contact, thus ensuring a stable electrical connection.
This improves the electrical connection stability between the biopsy needle and the biopsy sampling power handle, reduces the risk of electrical connection failure, and enhances the reliability and lifespan of the device during surgery.
Smart Images
Figure CN223979826U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, especially a kind of biopsy sampling power handle and biopsy device. BACKGROUND
[0002] In the medical field, biopsy device is an important diagnostic tool, for taking tissue sample from patient's body for pathological analysis.
[0003] The existing biopsy device generally includes handle and biopsy needle, biopsy needle is used to cut and obtain tissue sample handle, biopsy needle is installed on handle, and user operates biopsy needle by holding handle to perform operation. Electrode is arranged in handle and biopsy needle respectively, when biopsy needle is assembled to handle, electrode of the both is connected to realize the electrical connection between handle and biopsy needle.
[0004] The existing handle and biopsy needle are prone to electrode contact failure, which affects the stability of electrical connection between handle and biopsy needle. UTILITY MODEL CONTENT
[0005] The utility model aims at improving the stability of electrical connection between biopsy sampling power handle and biopsy needle.
[0006] To achieve the above-mentioned purpose, the utility model provides a biopsy sampling power handle, which is matched with biopsy needle, comprising:
[0007] Handle body assembly, provided with accommodating cavity and assembly hole communicating inside and outside of the accommodating cavity;
[0008] First electrode, slidingly arranged in the assembly hole, the first electrode has oppositely arranged first end and second end, the first end is directed to the accommodating cavity, and the second end is directed to the outside of the accommodating cavity, and the second end is used to connect the first connecting electrode of the biopsy needle;And
[0009] Elastic member, arranged between the first end of the first electrode and the handle body assembly, to provide elastic force to the first electrode towards the outside of the accommodating cavity.
[0010] In an embodiment, the first electrode comprises:
[0011] Main body portion, slidingly arranged in the assembly hole along the first direction, the first end and the second end are arranged in the main body portion, the first end is arranged in the accommodating cavity, and the second end extends to the outside of the accommodating cavity, and the elastic member directly or indirectly abuts with the first end and the handle body assembly respectively;And
[0012] Wiring portion, arranged in the first end.
[0013] In one embodiment, the wiring portion protrudes from the outer peripheral wall of the first end; and / or,
[0014] The wiring section is provided with a wiring hole, and the biopsy sampling power handle also includes a first wire, which passes through the wiring hole and connects to the wiring section.
[0015] In one embodiment, the inner wall of the assembly hole is provided with a guide groove extending along the first direction, and the wiring portion is fitted into the guide groove;
[0016] The handle assembly is provided with a limiting portion that restricts the travel position of the first electrode, and the limiting portion stops at at least one end of the guide groove.
[0017] In one embodiment, the biopsy sampling power handle further includes a seal disposed between the inner wall of the mounting hole and the main body portion to seal the connection between the main body portion and the handle assembly.
[0018] In one embodiment, one of the inner wall of the assembly hole and the outer peripheral wall of the main body is provided with a mounting groove, and the sealing element is disposed in the mounting groove.
[0019] In one embodiment, the biopsy sampling power handle further includes a first limiting structure, the first limiting structure including a first protrusion and a first groove, one of the inner wall of the mounting hole and the main body is provided with the first groove, the other of the inner wall of the mounting hole and the main body is provided with a first protrusion corresponding to the first groove, the first protrusion is inserted into the first groove, and one side wall of the first groove faces the first protrusion, so as to limit the sliding stroke of the first electrode; and / or,
[0020] The biopsy sampling power handle also includes a second limiting structure, which includes a second protrusion on the inner wall of the assembly hole and a second limiting surface formed on the main body. The second limiting surface faces the second protrusion to prevent the first electrode from coming out of the assembly hole.
[0021] In one embodiment, the handle assembly includes:
[0022] The handle housing has the aforementioned receiving cavity; and
[0023] A limiting member is detachably disposed inside the receiving cavity, and an elastic member elastically connects the first electrode and the limiting member.
[0024] In one embodiment, the limiting member and the first electrode are spaced apart to form an installation space, the elastic member is disposed in the installation space, one end of the elastic member abuts against the limiting member, and the other end of the elastic member abuts against the first end of the first electrode.
[0025] This utility model also proposes a biopsy device, comprising:
[0026] The aforementioned biopsy sampling power handle; and
[0027] The biopsy needle is detachably connected to the handle assembly and is provided with a first docking electrode, which docks with the first electrode.
[0028] The biopsy sampling power handle of this utility model includes a handle assembly, a first electrode, and an elastic element. The first electrode can slide within the mounting hole of the handle assembly. The elastic element elastically connects the first electrode and the handle assembly. When the biopsy needle is not mounted on the biopsy sampling power handle, the elastic element is in its natural state. When the biopsy needle is mounted on the biopsy sampling power handle, the first docking electrode docks with the first electrode and causes the first electrode to retract. At this time, the elastic element deforms under force and generates elastic force. Under the action of the elastic force of the elastic element, the first electrode and the first docking electrode are tightly docked, ensuring good contact between the first electrode and the first docking electrode and improving the stability of the electrical connection between the biopsy needle and the biopsy sampling power handle. Attached Figure Description
[0029] 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 the structures shown in these drawings without creative effort.
[0030] Figure 1 Cross-sectional view of an embodiment of the biopsy sampling power handle provided by this utility model Figure 1 ;
[0031] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;
[0032] Figure 3 Schematic diagram of the structure of the first electrode of the biopsy sampling power handle provided by this utility model Figure 1 ;
[0033] Figure 4 Schematic diagram of the structure of the first electrode of the biopsy sampling power handle provided by this utility model Figure 2 ;
[0034] Figure 5 Cross-sectional view of an embodiment of the biopsy sampling power handle provided by this utility model Figure 2 ;
[0035] Figure 6This is a schematic diagram of an embodiment of the biopsy device provided by this utility model.
[0036] Explanation of icon numbers:
[0037] 100. Biopsy sampling power handle; 110. Handle assembly; 111. Handle housing; 1111. Receiving cavity; 1112. Assembly hole; 1113. Second protrusion; 1114. Guide groove; 1115. Limiting part; 112. Limiting element; 120. First electrode; 121. Main body; 1211. Mounting groove; 1212. Second limiting surface; 122. Wiring part; 1221. Wiring hole; 130. Elastic element; 140. First wire; 150. Sealing element;
[0038] 200. Biopsy needle.
[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0040] 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 a part of the embodiments of the present utility model, and not all of them. 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.
[0041] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0044] This utility model proposes a biopsy sampling power handle.
[0045] Please see Figures 1-2 , Figure 1 Cross-sectional view of an embodiment of the biopsy sampling power handle provided by this utility model Figure 1 , Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.
[0046] In one embodiment of this utility model, the biopsy sampling power handle 100 cooperates with the biopsy needle 200, including:
[0047] The handle assembly 110 has a receiving cavity 1111 and an assembly hole 1112 that connects the inside and outside of the receiving cavity 1111;
[0048] A first electrode 120 is slidably disposed in the mounting hole 1112. The first electrode 120 has a first end and a second end disposed opposite to each other. The first end faces into the receiving cavity 1111, and the second end faces out of the receiving cavity 1111. The second end is used to connect to the first docking electrode of the biopsy needle 200.
[0049] An elastic element 130 is disposed between the first end of the first electrode 120 and the handle assembly 110 to provide an elastic force to the first electrode 120 toward the outside of the receiving cavity 1111.
[0050] The biopsy sampling power handle 100 of this utility model includes a handle assembly 110, a first electrode 120, and an elastic element 130. The first electrode 120 can slide within the mounting hole 1112 of the handle assembly 110. The elastic element 130 elastically connects the first electrode 120 and the handle assembly 110. When the biopsy needle 200 is not mounted on the biopsy sampling power handle 100, the elastic element 130 is in a natural state. When the biopsy needle 200 is mounted on the biopsy sampling power handle 100, the first docking electrode docks with the first electrode 120, causing the first electrode 120 to retract. At this time, the elastic element 130 deforms under force to generate elastic force. Under the action of the elastic force of the elastic element 130, the first electrode 120 and the first docking electrode are tightly docked, ensuring good contact between the first electrode 120 and the first docking electrode, and improving the stability of the electrical connection between the biopsy needle 200 and the biopsy sampling power handle 100.
[0051] The first electrode 120 can be an electrode that supplies power to the biopsy needle 200, or it can be an electrode that forms a circuit for electrocautery or electrocoagulation. The first direction refers to the axial direction of the first electrode 120.
[0052] When the elastic element 130 is in its natural state, the second end of the first electrode 120 can extend out of the receiving cavity 1111 to facilitate docking with the first docking electrode of the biopsy needle 200; the first electrode 120 can also remain inside the mounting hole 1112 without extending out of the receiving cavity 1111, and the first docking electrode on the biopsy needle 200 can be inserted into the mounting hole 1112 to dock with the first electrode 120.
[0053] In one embodiment, the first electrode 120 includes:
[0054] The main body 121 slides through the mounting hole 1112 along a first direction. A first end and a second end are located within the main body 121. The first end is located inside the receiving cavity 1111, and the second end extends outside the receiving cavity 1111. An elastic member 130 directly or indirectly abuts against the first end and the handle assembly 110, respectively.
[0055] Wiring section 122 is located at the first end.
[0056] Reference Figures 3-4In an embodiment of this utility model, the first electrode 120 includes a main body 121 and a wiring portion 122. The main body 121 slides through the assembly hole 1112, and the second end of the main body 121 extends outside the receiving cavity 1111 for connecting the spring and docking with the first docking electrode on the biopsy needle 200. The wiring portion 122 is located inside the receiving cavity 1111 for connecting the first wire 140. By implementing the connection of the elastic member 130 and the connection of the first wire 140 through different parts, the convenience of assembling the first electrode 120 is improved, the assembly difficulty is reduced, and the entire first electrode 120 has a simple structure and is easy to process and manufacture.
[0057] In one embodiment, the wiring portion 122 protrudes from the outer peripheral wall of the first end; and / or,
[0058] The wiring section 122 is provided with a wiring hole 1221. The biopsy sampling power handle 100 also includes a first wire 140, which passes through the wiring hole 1221 and is connected to the wiring section 122.
[0059] Combination Figures 2-3 In an embodiment of this utility model, the wiring portion 122 protrudes from the outer peripheral wall of the first end of the main body portion 121. When the main body portion 121 slides outward toward the receiving cavity 1111 under the action of the elastic member 130, the protruding wiring portion 122 abuts against the periphery of the mounting hole 1112, so that the first electrode 120 cannot pass through the mounting hole 1112, thus ensuring the reliability of the assembly of the first electrode 120 and the handle assembly 110.
[0060] Reference Figure 2 and Figure 4 In an embodiment of this utility model, a wiring hole 1221 is provided on the wiring part 122. The first wire 140 is fixed after passing through the wiring hole 1221. The first wire 140 and the wiring part 122 can be connected by welding or gluing. The wiring hole 1221 facilitates the connection between the wiring part 122 and the first wire 140, improves the stability of the connection between the first electrode 120 and the first wire 140, and thus improves the stability of the electrical connection between the biopsy needle 200 and the biopsy sampling power handle 100.
[0061] In one embodiment, the inner wall of the assembly hole 1112 is provided with a guide groove 1114 extending in a first direction, and the wiring portion 122 is fitted into the guide groove 1114.
[0062] The handle assembly 110 is provided with a limiting part 1115 that limits the travel position of the first electrode 120, and the limiting part 1115 blocks at least one end of the guide groove 1114.
[0063] Combination Figure 2 and Figure 4In an embodiment of this utility model, the inner wall of the assembly hole 1112 is provided with a guide groove 1114. The guide groove 1114 cooperates with the protruding wiring portion 122. When the first electrode 120 is inserted into the assembly hole 1112, the wiring portion 122 is assembled in the guide groove 1114. A limiting portion 1115 is provided at one or both ends of the guide groove 1114. When the first electrode 120 slides, the limiting portion 1115 blocks the sliding of the protruding wiring portion 122, thereby limiting the movement of the first electrode 120, preventing the first electrode 120 from falling off, and ensuring the reliability of the assembly of the first electrode 120 with the handle assembly 110.
[0064] In one embodiment, the biopsy sampling power handle 100 further includes a seal 150, which is disposed between the inner wall of the mounting hole 1112 and the main body 121 to seal the connection between the main body 121 and the handle assembly 110.
[0065] Reference Figures 2-4 In this embodiment of the invention, a sealing element 150 is provided between the inner wall of the mounting hole 1112 and the main body 121 to prevent liquids or impurities from the external environment from entering the receiving cavity 1111, thereby improving the waterproof performance of the biopsy sampling power handle 100. This reduces the risk of short circuits and malfunctions of components inside the receiving cavity 1111, extends the service life of the biopsy sampling power handle 100, and improves the reliability of the biopsy sampling power handle 100 during surgery. Since the main body 121 needs to slide in the mounting hole 1112, the sealing element 150 adopts a dynamic sealing form, such as an O-ring, V-ring, or Y-ring.
[0066] In one embodiment, a mounting groove 1211 is provided in one of the inner wall of the mounting hole 1112 and the outer peripheral wall of the main body 121, and the sealing member 150 is provided in the mounting groove 1211.
[0067] Reference Figures 2-4 In this embodiment of the invention, an installation groove 1211 is provided on the inner wall of the assembly hole 1112 or the outer peripheral wall of the main body 121 for installing the seal 150. The shape of the installation groove 1211 matches the shape of the seal 150 to ensure the firmness of the seal 150 after installation. The installation groove 1211 makes the installation and replacement of the seal 150 simpler and faster, reduces the possibility of the seal 150 falling off, and ensures a good sealing effect.
[0068] In one embodiment, the biopsy sampling power handle 100 further includes a first limiting structure, which includes a first protrusion and a first groove. One of the inner wall of the mounting hole 1112 and the main body 121 has a first groove, and the other of the inner wall of the mounting hole 1112 and the main body 121 has a first protrusion corresponding to the first groove. The first protrusion is inserted into the first groove, and one side wall of the first groove faces the first protrusion to limit the sliding stroke of the first electrode 120; and / or,
[0069] The biopsy sampling power handle 100 also includes a second limiting structure, which includes a second protrusion 1113 disposed on the inner wall of the mounting hole 1112 and a second limiting surface 1212 formed on the main body 121. The second limiting surface 1212 and the second protrusion 1113 face each other to prevent the first electrode 120 from coming out of the mounting hole 1112.
[0070] In this embodiment of the invention, the biopsy sampling power handle 100 limits the sliding stroke of the first electrode 120 by setting a first limiting structure. The first limiting structure includes a first protrusion and a first groove. The first groove can be disposed on the inner wall of the mounting hole 1112, and the first protrusion can be disposed on the outer wall of the main body 121, or the first groove can be disposed on the outer wall of the main body 121, and the first protrusion can be disposed on the inner wall of the mounting hole 1112. When the first protrusion is inserted into the first groove, the cooperation between the two limits the sliding stroke of the first electrode 120 in the mounting hole 1112, thereby preventing the electrode from sliding out of place or falling off, increasing the reliability of the connection between the first electrode 120 and the handle assembly 110, and reducing the possibility of damage to the biopsy sampling power handle 100. Specifically, in this embodiment, the first protrusion is the wiring portion 122 protruding from the first electrode 120, and the first groove is the guide groove 1114 disposed on the inner wall of the mounting hole 1112. The wiring portion 122 serves both to facilitate wiring and to limit the movement, simplifying the structure of the first electrode 120.
[0071] Reference Figure 2 and Figure 4 In an embodiment of this utility model, the biopsy sampling power handle 100 prevents the first electrode 120 from falling off by setting a second limiting structure. The second limiting structure includes a second limiting surface 1212 and a second protrusion 1113. The second protrusion 1113 is disposed on the inner wall of the mounting hole 1112, and the second limiting surface 1212 is disposed on the main body portion 121 of the first electrode 120 and faces the second limiting surface 1212. When the main body portion 121 slides in the direction of exiting the receiving cavity 1111, the second limiting surface 1212 abuts against the second protrusion 1113, and the second protrusion 1113 blocks the first electrode 120 from falling out of the mounting hole 1112, thereby preventing the electrode from sliding out of place or falling off, increasing the reliability of the connection between the first electrode 120 and the handle assembly 110, and reducing the possibility of damage to the biopsy sampling power handle 100.
[0072] In one embodiment, the handle assembly 110 includes:
[0073] The handle housing 111 has a receiving cavity 1111; and
[0074] The limiting member 112 is detachably disposed inside the receiving cavity 1111, and the elastic member 130 elastically connects the first electrode 120 and the limiting member 112.
[0075] Reference Figure 2 and Figure 5 In this embodiment of the invention, the handle assembly 110 includes a handle housing 111 and a limiting member 112. The handle housing 111 has a receiving cavity 1111, which mainly serves to support and protect the handle, making it convenient for the user to grip. The limiting member 112 is detachably disposed inside the receiving cavity 1111, facilitating the connection of the elastic member 130 and improving the convenience of assembling the elastic member 130 with the handle assembly 110, making the elastic member 130 replaceable and easy to replace. The limiting member 112 can be disposed inside the receiving cavity 1111 in various detachable ways, such as snap-fit or screw fastening.
[0076] In one embodiment, the limiting member 112 and the first electrode 120 are spaced apart to form an installation space, and the elastic member 130 is disposed in the installation space. One end of the elastic member 130 abuts against the limiting member 112, and the other end of the elastic member 130 abuts against the first end of the first electrode 120.
[0077] Reference Figure 2 and Figure 5 In an embodiment of this utility model, the limiting member 112 and the first electrode 120 are spaced apart to form an installation space, and the elastic member 130 is directly installed in the installation space. The elastic member 130 is compressed and extended in the installation space, which further improves the convenience of installing the elastic member 130.
[0078] Combination Figure 1 and Figure 6 This utility model also proposes a biopsy device, comprising:
[0079] The aforementioned biopsy sampling power handle 100; and
[0080] The biopsy needle 200 is detachably connected to the handle assembly 110 and is provided with a first docking electrode, which docks with the first electrode 120.
[0081] The specific structure of the biopsy sampling power handle 100 is as described in the above embodiments. Since this biopsy device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The biopsy needle 200 is detachably connected to the handle assembly 110, which can be achieved by snap-fit or plug-in connection. The biopsy needle 200 is provided with a first docking electrode, which docks with the first electrode 120 to achieve electrical signal transmission.
[0082] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A biopsy sampling power handle for cooperating with a biopsy needle, characterized in that, The biopsy sampling power handle comprises: a handle body assembly provided with a receiving cavity and an assembly hole communicating inside and outside of the receiving cavity; a first electrode slidingly arranged in the assembly hole, the first electrode having a first end and a second end arranged oppositely, the first end being directed to the inside of the receiving cavity, and the second end being directed to the outside of the receiving cavity and used for connecting a first mating electrode of the biopsy needle; and a resilient member arranged between the first end of the first electrode and the handle body assembly to provide the first electrode with a resilient force directed to the outside of the receiving cavity. The first electrode comprises:
2. The biopsy sampling power handle of claim 1, wherein, a main body portion slidingly arranged in the assembly hole along a first direction, the first end and the second end being arranged on the main body portion, the first end being arranged in the receiving cavity, and the second end extending to the outside of the receiving cavity, the resilient member directly or indirectly abutting against the first end and the handle body assembly respectively; and a wiring portion arranged on the first end. The wiring portion is protruded from an outer peripheral wall of the first end; and / or 3. The biopsy sampling power handle of claim 2, wherein, the wiring portion is provided with a wiring hole, and the biopsy sampling power handle further comprises a first lead wire penetrating into the wiring hole and connected to the wiring portion. An inner wall of the assembly hole is provided with a guide groove extending along the first direction, and the wiring portion is arranged in the guide groove; 4. The biopsy sampling power handle of claim 3, wherein, the handle body assembly is provided with a limiting portion limiting a stroke position of the first electrode, and the limiting portion is arranged at least at one end of the guide groove. The biopsy sampling power handle further comprises a sealing member arranged between the inner wall of the assembly hole and the main body portion to seal the main body portion and the handle body assembly.
5. The biopsy sampling power handle of claim 2, wherein, One of the inner wall of the assembly hole and an outer peripheral wall of the main body portion is provided with a mounting groove, and the sealing member is arranged in the mounting groove.
6. The biopsy sampling power handle of claim 5, wherein, The biopsy sampling power handle further comprises a first limiting structure, the first limiting structure comprising a first protrusion and a first groove, one of the inner wall of the assembly hole and the main body portion is provided with the first groove, the other of the inner wall of the assembly hole and the main body portion is provided with the first protrusion corresponding to the first groove, the first protrusion is inserted into the first groove, and one side groove wall of the first groove faces the first protrusion to limit the sliding stroke of the first electrode; and / or 7. The biopsy sampling power handle of claim 2, wherein, The biopsy sampling power handle further comprises a second limiting structure, the second limiting structure comprising a second protrusion arranged on the inner wall of the assembly hole and a second limiting surface formed on the main body portion, the second limiting surface facing the second protrusion to block the first electrode from being pulled out of the assembly hole. The handle body assembly comprises:
8. The biopsy sampling power handle of claim 1, wherein, a handle shell provided with the receiving cavity; and a limiting member detachably arranged in the inside of the receiving cavity, and the resilient member elastically connecting the first electrode and the limiting member. The limiting member is arranged apart from the first electrode to form a mounting space, the resilient member is arranged in the mounting space, one end of the resilient member abutting against the limiting member, and the other end of the resilient member abutting against the first end of the first electrode.
9. The biopsy sampling power handle of claim 8, wherein, The biopsy sampling power handle comprises:
10. A biopsy device characterized by, the biopsy sampling power handle according to any one of claims 1 to 9; and The biopsy needle is detachably connected with the handle assembly, and is provided with a first abutting electrode which is in abutment with the first electrode.