A biopsy ablation needle

Abstract

The application provides a biopsy ablation needle, and relates to the technical field of medical devices.The biopsy ablation needle comprises a shell, a sampling assembly and an ablation assembly, the inside of the shell has a containing cavity, the ablation assembly is located in the containing cavity, the sampling assembly comprises a sampling needle and a trocar coaxially arranged, the sampling needle is arranged in the inside of the trocar, the ablation assembly comprises a first conductive ring and a second conductive ring, the first conductive ring is clamped on the sampling needle, the second conductive ring is clamped on the trocar, the first conductive ring and the second conductive ring are electrically connected to two poles of the output end of a power supply, and the sampling needle and the trocar are insulated from each other.The application provides a biopsy ablation needle integrating biopsy and ablation functions.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a biopsy ablation needle. Background Technology

[0002] In the field of medical technology, biopsy is a method of obtaining suspicious tissue samples, such as tumor samples, from the human body. The biopsy ablation needle used has a sampling needle and a cannula. The sampling needle has an opening at its tip, allowing sample tissue from the lesion to be contained within the needle upon insertion. The cannula is then ejected, fitted over the sampling needle, and used in conjunction with the sampling needle to cut away tissue from the lesion for testing. This tissue is then used for subsequent pathological examination to determine the nature of the lesion, such as whether it is benign or malignant.

[0003] Currently, bleeding may occur when the biopsy ablation needle is withdrawn after obtaining the tissue for testing. This bleeding is more likely to occur in areas such as the kidneys or lungs. While bleeding in external areas can be controlled with local pressure or bandages, structures like the kidneys and lungs are inside the body and cannot be directly stopped by pressure. However, if the organ in that area has a disease, such as cancer in a cancer patient, the blood carrying cancer cells flowing out when the biopsy ablation needle is withdrawn could lead to the spread of cancer cells, potentially causing malignant tissue to infect healthy tissue. Summary of the Invention

[0004] The purpose of this application is to address the above problems by providing a biopsy ablation needle that integrates biopsy and ablation functions.

[0005] This application provides a biopsy ablation needle, comprising: a housing, a sampling component, and an ablation component; the housing having an internal cavity; the ablation component located within the cavity; the sampling component comprising a coaxially arranged sampling needle and a cannula; the sampling needle passing through the interior of the cannula; and the ablation component comprising a first conductive ring and a second conductive ring, the first conductive ring clamping the sampling needle and the second conductive ring clamping the cannula; the first conductive ring and the second conductive ring being electrically connected to the two poles of the output terminal of a power supply device; and the sampling needle and the cannula being insulated from each other.

[0006] According to the technical solutions provided in certain embodiments of this application, the biopsy ablation needle further includes a first insulating layer. The first insulating layer is disposed outside the sampling needle, and the first insulating layer is not covered at the tip of the sampling needle or at the position corresponding to the first conductive ring after the sampling needle extends out of the housing.

[0007] According to the technical solutions provided in certain embodiments of this application, the biopsy ablation needle further includes a first power component and a second power component disposed inside the housing. The sampling needle is connected to the first power component, and the cannula needle is connected to the second power component. Both the first power component and the second power component have an energy storage state and a release state. When the first power component and the second power component change from the energy storage state to the release state, the sampling needle and the cannula needle can be extended from the housing, respectively.

[0008] According to the technical solutions provided in certain embodiments of this application, the biopsy ablation needle further includes a blocking assembly and a linkage assembly. The blocking assembly extends into the receiving cavity from one end of the housing along its length. The blocking assembly includes a first blocking member and a second blocking member, and the blocking assembly is capable of reciprocating along the length of the housing. The first blocking member enables the first power component to return from the released state to the stored state, and the second blocking member enables the second power component to return from the released state to the stored state. The linkage assembly enables the first power component and the second power component to change from the stored state to the released state.

[0009] According to the technical solutions provided in certain embodiments of this application, the linkage component includes a linkage frame, a push rod, a first locking member, and a second locking member. One end of the linkage frame is fixedly connected to the push rod, and the push rod extends from the end of the housing opposite to the gear engagement component. The linkage frame can move along the length direction of the housing. The first locking member and the second locking member can both rotate within the receiving cavity to limit and release the first power assembly and the second power assembly, respectively.

[0010] According to the technical solutions provided in certain embodiments of this application, the biopsy ablation needle further includes a limiting member. The limiting member is a plate-shaped structure and is located at the connection between the linkage frame and the push rod. The surface of the limiting member is provided with a protrusion. The inner wall of the housing has a limiting seat for accommodating the limiting member. The inner wall of the limiting seat is provided with a plurality of grooves corresponding to the protrusion. The protrusion can be engaged with the plurality of grooves respectively. The ends of the first hanging member and the second hanging member are both provided with inclined pressing surfaces. The upper part of the limiting member is provided with an inclined surface corresponding to the inclined pressing surface.

[0011] According to the technical solutions provided in certain embodiments of this application, the limiting member has a first stepped surface and a through hole on its surface facing the push rod. The side wall of the limiting member has a toggle member, which extends from the wall of the housing at a corresponding position. The limiting member can reciprocate between a limiting position, an abutting position, and a releasing position in sequence. When the limiting member is in the limiting position, the end of the push rod abuts against the surface of the limiting member, and both the first power component and the second power component are in the energy storage state. When the limiting member is in the abutting position, the end of the push rod abuts against the first stepped surface, the first power component changes from the energy storage state to the release state, and the sampling needle extends out of the housing. When the limiting member is in the releasing position, the push rod passes through the through hole, and both the first power component and the second power component are in the release state, enabling the sampling needle and the cannula needle to extend out of the housing in sequence and respectively.

[0012] According to certain embodiments of this application, the first power component includes a first slider, a first elastic member, and a first baffle. The first elastic member is disposed between the first slider and the first baffle. The first latching member is connected to the first slider. The second power component includes a second slider, a second elastic member, and a second baffle. The second elastic member is disposed between the second slider and the second baffle. The second latching member is connected to the second slider. Both the first baffle and the second baffle are connected to the inner wall of the housing. When the first power component is in the energy storage state, the first slider abuts against the first locking member. When the second power component is in the energy storage state, the second slider abuts against the second locking member.

[0013] According to the technical solutions provided in certain embodiments of this application, both the first locking member and the second locking member have mating surfaces. The linkage frame is provided with a first abutting inclined surface and a second abutting inclined surface corresponding to the positions of the first locking member and the second locking member, respectively. When the linkage frame moves from the locked position to the released position, the first abutting inclined surface abuts against the mating surface of the first locking member, and the second abutting inclined surface abuts against the mating surface of the second locking member. The distance between the first abutting inclined surface and the first locking member is less than the distance between the second abutting inclined surface and the second locking member.

[0014] According to the technical solutions provided in certain embodiments of this application, the biopsy ablation needle further includes a first switch and a second switch. Both the first switch and the second switch are connected to the housing via springs. The extension ends of both the first switch and the second switch have inclined surfaces. The linkage frame has a first inclined groove and a second inclined groove respectively corresponding to the positions of the first switch and the second switch. The inclined length of the first inclined groove is less than the inclined length of the second inclined groove. When the extension end of the first switch abuts against the first inclined groove, the linkage frame changes the first power component from the energy storage state to the release state. When the extension end of the second switch abuts against the second inclined groove, the linkage frame sequentially changes the first power component and the second power component from the energy storage state to the release state.

[0015] Compared with existing technologies, the beneficial effects of this application are: integrating biopsy and ablation functions, allowing for direct tissue ablation treatment after sampling, reducing surgical steps, and avoiding the spread of cancer cells due to the outflow of blood carrying cancer cells. To prevent the ablation function from ablating the sampled tissue in the sampling groove of the sampling needle, insulation is required between the sampling needle and the cannula. An insulating layer is provided between the sampling needle and the cannula. This insulating layer can be located on the outer circumference of the sampling needle; specifically, the tip of the sampling needle and the part that needs to conduct electricity when connected to the first conductive ring are not insulated. This ensures insulation between the sampling groove of the sampling needle and the cannula, preventing the tissue sample in the sampling groove from being ablated. Simultaneously, an insulating layer can also be provided on the inner surface of the cannula, again omitting the tip of the cannula and the part that needs to conduct electricity when connected to the second conductive ring.

[0016] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural diagram of a biopsy ablation needle provided in an embodiment of this application;

[0019] Figure 2 A three-dimensional structural diagram of a biopsy ablation needle provided in an embodiment of this application from another angle;

[0020] Figure 3 An exploded view of the structure of a biopsy ablation needle provided in an embodiment of this application;

[0021] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0022] Figure 5 This is a three-dimensional structural diagram of a biopsy ablation needle provided in an embodiment of this application, in which part of the shell is hidden;

[0023] Figure 6 This is a three-dimensional structural diagram of a biopsy ablation needle provided in an embodiment of this application, in which the shell is hidden;

[0024] Figure 7 This is a three-dimensional structural diagram of a biopsy ablation needle provided in an embodiment of this application, in which part of the shell and the mounting assembly are hidden;

[0025] Figure 8 A side view of a first power assembly, a second power assembly, and a linkage assembly of a biopsy ablation needle provided for an embodiment of this application;

[0026] Figure 9 A three-dimensional structural schematic diagram of a linkage component for a biopsy ablation needle provided in an embodiment of this application;

[0027] Figure 10 This is a schematic diagram of the structure of a limiting element for a biopsy ablation needle provided in an embodiment of this application.

[0028] The text labels in the image represent:

[0029] 100. Biopsy ablation needle;

[0030] 10. Shell; 11. Receiving cavity; 12. Limiting seat; 121. Groove;

[0031] 20. Sampling assembly; 21. Sampling needle; 22. Cannula;

[0032] 30. Gear shift assembly; 31. First gear shift component; 32. Second gear shift component;

[0033] 40. First power assembly; 41. First slider; 42. First elastic element; 43. First baffle;

[0034] 50. Second power assembly; 51. Second slider; 52. Second elastic element; 53. Second baffle;

[0035] 60. Linkage components; 61. Linkage frame;

[0036] 611. First abutting inclined surface; 612. Second abutting inclined surface;

[0037] 613. First inclined groove; 614. Second inclined groove;

[0038] 62. Press lever; 63. First locking element; 64. Second locking element;

[0039] 65. Fixed plate; 66. Third elastic element;

[0040] 70. Limiting component; 71. Protrusion; 72. First stepped surface; 73. Through hole; 74. Actuating component;

[0041] 81. First switch; 82. Second switch;

[0042] 90. Ablation assembly; 91. First conductive ring; 93. Second conductive ring; 94. On / off switch; 95. Power supply. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this application.

[0044] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0045] As mentioned in the background section, in the field of medical technology, biopsy is a method of obtaining suspicious tissue, such as tumor samples, from the human body. The biopsy ablation needle used in a biopsy consists of a sampling needle and a cannula. The sampling needle has an opening at its tip, allowing sample tissue from the lesion to remain inside the needle upon insertion. The cannula is then ejected, fitted over the sampling needle, and used in conjunction with the sampling needle to cut tissue from the lesion for testing. This tissue is then used for subsequent pathological examination to determine the nature of the lesion, such as whether it is benign or malignant.

[0046] Currently, bleeding may occur when the biopsy ablation needle is withdrawn after obtaining the tissue for testing. This bleeding is more likely to occur in areas such as the kidneys or lungs. While bleeding in external areas can be controlled with local pressure or bandages, structures like the kidneys and lungs are inside the body and cannot be directly stopped by pressure. However, if the organ in that area has a disease, such as cancer in a cancer patient, the blood carrying cancer cells flowing out when the biopsy ablation needle is withdrawn could lead to the spread of cancer cells, potentially causing malignant tissue to infect healthy tissue.

[0047] To address the problems in the existing technology, and in conjunction with the appendix to the instruction manual Figures 1-10 This embodiment describes a biopsy ablation needle 100.

[0048] like Figure 1 , Figure 3 and Figure 7 As shown, the biopsy ablation needle 100 includes a housing 10, a sampling assembly 20, and an ablation assembly 90. The housing 10 has a receiving cavity 11 inside, and the ablation assembly 90 is located within the receiving cavity 11, as shown... Figures 1-4 As shown, the sampling assembly 20 includes a sampling needle 21 and a cannula needle 22 arranged coaxially. The sampling needle 21 passes through the interior of the cannula needle 22, as shown. Figure 4 As shown, the sampling assembly 20 includes a sampling needle 21 and a cannula 22 arranged coaxially. The sampling needle 21 is inserted inside the cannula 22, thereby enabling sampling of the lesion tissue through the cooperation of the sampling needle 21 and the cannula 22.

[0049] like Figure 7 As shown, the ablation assembly 90 includes a first conductive ring 91 and a second conductive ring 93. The first conductive ring 91 is clamped to the sampling needle 21, and the second conductive ring 93 is clamped to the cannula needle 22. The first conductive ring 91 and the second conductive ring 93 are electrically connected to the two poles of the output terminal of the power supply device, respectively. The sampling needle 21 and the cannula needle 22 are insulated from each other, and the sampling needle 21 and the cannula needle 22 can form a closed conductive circuit through the first conductive ring 91 and the second conductive ring 93, respectively, after the power supply device is turned on.

[0050] Specifically, bleeding may occur when the biopsy ablation needle 100 is withdrawn after sampling. This bleeding is more likely to occur in areas such as the kidneys or lungs. While bleeding on the body surface can be stopped by local pressure or bandaging, structures like the kidneys and lungs are inside the body and cannot be directly stopped by pressure. However, if the organ in this location has a disease, such as cancer in a cancer patient, the blood carrying cancer cells flowing out when the biopsy ablation needle 100 is withdrawn could lead to the spread of cancer cells, easily causing malignant tissue to infect healthy tissue. Therefore, the power supply device controls the current flow, transmitting the current through the first conductive ring 91 and the second conductive ring 93 to the sampling needle 21 and the cannula needle 22 respectively. This creates a current path between the tip of the sampling needle 21, the area to be ablated, and the tip of the cannula needle 22, thereby producing a thermal ablation effect on the tissue. Integrating biopsy and ablation functions, tissue ablation treatment can be performed directly after sampling, reducing surgical steps and avoiding the spread of cancer cells due to the outflow of blood carrying cancer cells.

[0051] Furthermore, after sampling, to prevent the ablation function from ablating the sampled tissue at the sampling groove of the sampling needle 21, insulation is required between the sampling needle 21 and the cannula needle 22. Therefore, an insulating layer is provided between the sampling needle 21 and the cannula needle 22. This insulating layer can be located on the outer circumference of the sampling needle 21, specifically, the tip of the sampling needle 21 and the portion connected to the first conductive ring 91 that requires conductivity are not provided with an insulating layer. This ensures insulation between the sampling groove of the sampling needle 21 and the cannula needle 22, preventing the tissue sample at the sampling groove from being ablated. Simultaneously, an insulating layer can also be provided on the inner surface of the cannula needle 22, again omitting the tip of the cannula needle 22 and the portion connected to the second conductive ring 93 that requires conductivity.

[0052] According to this application, a biopsy ablation needle 100 integrates biopsy and ablation functions, allowing for direct tissue ablation treatment after sampling, reducing surgical steps and preventing cancer cell spread due to the outflow of blood carrying cancer cells. To prevent the ablation function from ablating the sampled tissue at the sampling groove of the sampling needle 21, insulation is required between the sampling needle 21 and the cannula needle 22. An insulating layer is provided between the sampling needle 21 and the cannula needle 22. The insulating layer can be located on the outer circumferential surface of the sampling needle 21, specifically, the tip of the sampling needle 21 and the part that needs to conduct electricity when connected to the first conductive ring 91 are not provided with an insulating layer, thus achieving insulation between the sampling groove of the sampling needle 21 and the cannula needle 22 to prevent the tissue sample at the sampling groove from being ablated. Simultaneously, an insulating layer can also be provided on the inner surface of the cannula needle 22, again omitting the insulating layer from the tip of the cannula needle 22 and the part that needs to conduct electricity when connected to the second conductive ring 93.

[0053] In some embodiments of this application, the ablation assembly 90 further includes an on / off switch 94 and a power supply 95. The input terminal of the on / off switch 94 is electrically connected to the output terminal of the power supply 95. Therefore, the on / off switch 94 controls the current flow, the power supply 95 provides electrical energy, and the current is transmitted to the sampling needle 21 and the cannula needle 22 through the first conductive ring 91 and the second conductive ring 93, respectively, so that a current path is formed at the tip of the sampling needle 21, the tissue to be ablated, and the tip of the cannula needle 22, so as to produce a thermal ablation effect on the tissue.

[0054] In some embodiments of this application, such as Figure 7 and Figure 8 As shown, the biopsy ablation needle 100 also includes a first power assembly 40 and a second power assembly 50 disposed inside the housing 10. The sampling needle 21 is connected to the first power assembly 40, and the cannula needle 22 is connected to the second power assembly 50. Both the first power assembly 40 and the second power assembly 50 have an energy storage state and a release state. The energy storage state is when the first power assembly 40 and the second power assembly 50 are engaged. When the first power assembly 40 and the second power assembly 50 change from the energy storage state to the release state, the sampling needle 21 and the cannula needle 22 can be extended from the housing 10, that is, the sampling needle 21 and the cannula needle 22 are fired out of the housing 10.

[0055] like Figure 8As shown, the sampling needle 21 is connected to the first power assembly 40, and the cannula needle 22 is connected to the second power assembly 50. Both the first power assembly 40 and the second power assembly 50 have energy storage and release states. This allows for flexible and manual control of the firing sequence of the sampling needle 21 and the cannula needle 22 through the first power assembly 40 and the second power assembly 50, respectively. The transition from the energy storage state to the release state of the first power assembly 40 and the second power assembly 50 can be precisely controlled, thus determining the timing of the sampling needle 21 and the cannula needle 22 extending from the housing 10. Compared to the shortcomings of existing technologies where all steps are automatically completed upon triggering and cannot be fine-tuned during surgery according to the actual situation, this is particularly suitable for complex sampling scenarios where the sampling needle 21 needs to be inserted for positioning before the cannula needle 22 is fired at the optimal moment to complete the cutting.

[0056] In some embodiments of this application, Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the biopsy ablation needle 100 also includes a latching assembly 30 and a linkage assembly 60. The latching assembly 30 extends into the receiving cavity 11 from one end of the housing 10 along its length. Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the gear shifting assembly 30 includes a first gear shifting member 31 and a second gear shifting member 32, and the gear shifting assembly 30 is capable of reciprocating along the length direction of the housing 10. The first gear shifting member 31 can restore the first power assembly 40 from a released state to an energy storage state, and the second gear shifting member 32 can restore the second power assembly 50 from a released state to an energy storage state. The restoration of the first power assembly 40 and the second power assembly 50 from the released state to the energy storage state constitutes gear shifting. Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the linkage component 60 can change the first power component 40 and the second power component 50 from the energy storage state to the energy release state, and respectively cause the sampling needle 21 and the cannula needle 22 to extend out of the housing 10.

[0057] Specifically, the linkage component 60 triggers the release of the first power component 40 and the second power component 50 by moving, thereby driving the sampling needle 21 and the cannula needle 22 to extend from the housing 10, respectively. The gear engagement component 30, through reciprocating motion, recompresses the first power component 40 and the second power component 50 back to their energy storage state, thus engaging the gear. Figure 1 , Figure 2 and Figure 5As shown, the housing 10 is an integral structure, with the various components arranged within the housing cavity 11, providing protection for each internal component. Through the cooperation of the linkage component 60 and the shifting component 30, the user can control the firing sequence and timing of the sampling needle 21 and the cannula needle 22 as needed. At the same time, the shifting component 30 simplifies the shifting operation, allowing the sampling needle 21 and the cannula needle 22 to quickly return to their pre-firing positions.

[0058] According to the biopsy ablation needle 100 of this application, the engagement assembly 30 provides a quick and easy engagement function, greatly improving operational efficiency. This assembly extends from one end of the housing 10 into the receiving cavity 11 and can reciprocate along the length of the housing. After a sampling is completed and the power assembly is in the released state, the operator only needs to push the engagement assembly 30 to drive the first power assembly 40 and the second power assembly 50 to overcome resistance and return from the released state to the stored state, preparing for the next firing. This design simplifies the complex engagement operation into a single, continuous motion and facilitates one-handed operation.

[0059] In some embodiments of this application, the biopsy ablation needle 100 further includes a first insulating layer. The first insulating layer is disposed outside the sampling needle 21, and the tip of the sampling needle 21, as well as the position corresponding to the first conductive ring 91 after the sampling needle 21 extends from the housing 10, are not covered by the first insulating layer. When the first power assembly 40 is in an energy storage state, the first insulating layer corresponds to the position of the first conductive ring 91. Therefore, the sampling needle 21 and the first conductive ring 91 are isolated by the first insulating layer.

[0060] This ensures that even if the on / off switch 94 is accidentally activated when there is no need to fire the sampling needle 21 and the cannula 22, the ablation function can be avoided due to the isolation of the first insulating layer. Simultaneously, it ensures insulation between the sampling groove of the sampling needle 21 and the cannula 22, preventing the tissue sample taken from the sampling groove from being ablated.

[0061] When the first power component 40 changes from the energy storage state to the release state, the sampling needle 21 is activated, and the first insulating layer disengages from the first conductive ring 91, allowing the first conductive ring 91 to contact the sampling needle 21. Pressing the on / off switch 94 then creates a current path between the tip of the sampling needle 21, the tissue to be ablated, and the tip of the cannula needle 22, enabling the ablation function.

[0062] In some embodiments of this application, the biopsy ablation needle 100 may further include a second insulating layer. The second insulating layer is disposed outside the cannula needle 22, and the tip of the cannula needle 22, as well as the position corresponding to the sampling needle 21 and the second conductive ring 93 after the cannula needle 22 extends out of the housing 10, are not covered by the second insulating layer. Therefore, when the second power assembly 50 is in the energy storage state, the second insulating layer corresponds to the position of the second conductive ring 93, and thus the cannula needle 22 and the second conductive ring 93 are isolated by the second insulating layer.

[0063] When the second power component 50 changes from the energy storage state to the release state, the cannula needle 22 is activated, and the second insulating layer and the second conductive ring 93 disengage, allowing the second conductive ring 93 to contact the cannula needle 22. Pressing the on / off switch 94 then creates a current path between the tip of the sampling needle 21, the tissue to be ablated, and the tip of the cannula needle 22, enabling the ablation function.

[0064] In some embodiments of this application, the circuit traces can be connected to the first conductive ring 91 and the second conductive ring 93 respectively through through-holes formed in a portion of the structure.

[0065] In some embodiments of this application, such as Figure 7 and Figure 8 As shown, the linkage assembly 60 includes a linkage frame 61, a push rod 62, a first locking member 63, and a second locking member 64. One end of the linkage frame 61 is fixedly connected to the push rod 62, which extends from the end of the housing 10 away from the engagement assembly 30. The linkage frame 61 can move along the length of the housing 10, and both the first locking member 63 and the second locking member 64 can rotate within the receiving cavity 11 to limit and release the first power assembly 40 and the second power assembly 50, respectively. Therefore, by pushing the push rod 62, the linkage frame 61 can be pushed synchronously, thereby causing the linkage frame 61 to change the first locking member 63 and the second locking member 64 from locking the first power assembly 40 and the second power assembly 50 to releasing the first locking member 63 and the second locking member 64.

[0066] Specifically, such as Figures 7-9 As shown, when the push lever 62 is pressed by the user, it pushes the linkage frame 61 to move into the housing 10. The linkage frame 61 drives the first locking member 63 and the second locking member 64 to rotate, thereby releasing the restriction on the first power assembly 40 and the second power assembly 50. The linkage frame 61 is connected to the push lever 62, and the first locking member 63 and the second locking member 64 achieve locking and releasing through rotation. An intuitive manual control mechanism is provided. The user can drive the linkage frame 61 by pressing the push lever 62. The first locking member 63 and the second locking member 64 ensure that the power assembly is stably locked in the energy storage state and accurately released when released, improving operational reliability.

[0067] Furthermore, the linkage frame 61, through movement, triggers the release of the first power assembly 40 and the second power assembly 50, thereby driving the sampling needle 21 and the cannula needle 22 to extend from the housing 10, respectively. The engagement assembly 30, through movement, recompresses the first power assembly 40 and the second power assembly 50 back to their stored-energy state, achieving engagement. Through the cooperation of the linkage frame 61 and the engagement assembly 30, the user can control the firing sequence and timing of the sampling needle 21 and the cannula needle 22 as needed. Simultaneously, the engagement assembly 30 simplifies the engagement operation, allowing the sampling needle 21 and the cannula needle 22 to quickly return to their pre-firing state.

[0068] In some embodiments of this application, such as Figures 7-10 As shown, the biopsy ablation needle 100 also includes a limiting member 70. The limiting member 70 has a plate-like structure and is located at the connection between the linkage frame 61 and the push rod 62. The surface of the limiting member 70 is provided with protrusions 71, and the inner wall of the housing 10 has a limiting seat 12 to accommodate the limiting member 70. The inner wall of the limiting seat 12 is provided with multiple grooves 121 corresponding to the protrusions 71, and the protrusions 71 can engage with the multiple grooves 121 respectively. Thus, the limiting member 70 provides multiple stable positions through the engagement of the protrusions 71 with the multiple grooves 121, ensuring that the linkage assembly 60 remains fixed at different firing stages, avoiding misoperation, and enhancing safety.

[0069] Specifically, when the limiting member 70 moves within the limiting seat 12, such as Figure 8 As shown, the limiting member 70 moves up and down within the limiting seat 12, engaging with different grooves 121 via the protrusion 71, thereby fixing the height position of the limiting member 70 and limiting the movement range of the push rod 62. Figure 10 As shown, the protrusion 71 of the limiting member 70 engages with the groove 121 of the limiting seat 12.

[0070] In some embodiments of this application, such as Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the ends of the first stop member 31 and the second stop member 32 both have inclined pressure surfaces, and the upper part of the limiting member 70 is provided with an inclined surface corresponding to the inclined pressure surface. When the first stop member 31 and the second stop member 32 move into the housing 10, the inclined pressure surface contacts the top inclined surface of the limiting member 70, generating pressure and pushing the limiting member 70 back to the limiting position.

[0071] Specifically, such as Figure 5 and Figure 6As shown, the engagement relationship between the gear shift assembly 30 and the limiting member 70 is evident. When the gear shift assembly 30 is pushed, it moves into the housing 10. The gear shift assembly 30 engages with the inclined surface of the limiting member 70 via its inclined pressing surface, automatically pushing the limiting member 70 from the disengaged position of the limiting seat 12 to the limiting position during gear shifting. This simplifies the gear shifting process and improves operational efficiency.

[0072] In some embodiments of this application, such as Figure 10 As shown, the limiting member 70 has a first stepped surface 72 and a through hole 73 on its surface facing the actuating rod 62. The side wall of the limiting member 70 has a toggle member 74, which extends from the wall of the housing 10 at a corresponding position. Thus, the height position of the limiting member 70 can be controlled outside the housing 10 by using the toggle member 74, thereby controlling the actuation amplitude of the actuating rod 62. That is, the limiting member 70 can reciprocate between a limiting position, an abutting position, and a disengaged position sequentially. Specifically, when the limiting member 70 engages with the upper first groove 121 of the limiting seat 12, the limiting member 70 is in the limiting position. When the limiting member 70 engages with the middle second groove 121 of the limiting seat 12, the limiting member 70 is in the abutting position. When the limiting member 70 engages with the lower first groove 121 of the limiting seat 12, the limiting member 70 is in the disengaged position.

[0073] Furthermore, when the limiting member 70 is in the limiting position, the end of the pressing rod 62 abuts against the surface of the limiting member 70, and both the first power assembly 40 and the second power assembly 50 are in an energy-storing state. That is, the limiting member 70 restricts the pushing of the pressing rod 62. When the limiting member 70 is in the abutting position, the end of the pressing rod 62 abuts against the first stepped surface 72, the first power assembly 40 changes from the energy-storing state to the release state, and the sampling needle 21 extends out of the housing 10. When the limiting member 70 is in the released position, the pressing rod 62 passes through the through hole 73, and both the first power assembly 40 and the second power assembly 50 are in the release state, enabling the sampling needle 21 and the cannula needle 22 to extend out of the housing 10 sequentially and respectively.

[0074] In other words, the toggle 74 is used to manually adjust the position of the limiting member 70. In the limiting position, the push rod 62 is completely blocked. In the abutting position, the push rod 62 can only be partially pressed, triggering the release of the first power component 40; in the released position, the push rod 62 can be fully pressed, triggering the release of all power components. Therefore, the user can select different firing modes via the toggle 74, such as firing only the sampling needle 21, or firing both the sampling needle 21 and the cannula needle 22 simultaneously, thus achieving manual control of the firing time to adapt to different sampling needs.

[0075] In some embodiments of this application, such as Figure 7 and Figure 8As shown, the first power assembly 40 includes a first slider 41, a first elastic element 42, and a first baffle 43. The first elastic element 42 is disposed between the first slider 41 and the first baffle 43, and the first stopper 31 is connected to the first slider 41. The second power assembly 50 includes a second slider 51, a second elastic element 52, and a second baffle 53. The second elastic element 52 is disposed between the second slider 51 and the second baffle 53, and the second stopper 32 is connected to the second slider 51. The middle part of the first stopper 31 may have an abutment portion, which abuts against the front surface of the second slider 51. The front surface of the second slider 51 is the surface facing the tip of the sampling needle 21. Both the first baffle 43 and the second baffle 53 are connected to the inner wall of the housing 10. When the first power assembly 40 is in the energy storage state, the first slider 41 abuts against the first locking element 63; when the second power assembly 50 is in the energy storage state, the second slider 51 abuts against the second locking element 64.

[0076] Specifically, the first stopper 31 can push the first slider 41 to put the first power assembly 40 into an energy storage state, and the second stopper 32 can push the second slider 51 to put the second power assembly 50 into an energy storage state. Furthermore, the first stopper 31 has an abutment portion in its middle, which abuts against the front surface of the second slider 51. The front surface of the second slider 51 is the surface facing the tip of the sampling needle 21. Therefore, when the first stopper 31 is pushed, both the first power assembly 40 and the second power assembly 50 can be simultaneously changed from a released state to an energy storage state. In the energy storage state, the first elastic member 42 and the second elastic member 52 are compressed, and the first slider 41 and the second slider 51 are respectively limited by the first locking member 63 and the second locking member 64. During release, the first locking member 63 and the second locking member 64 rotate, and the slider moves rapidly under the action of the elastic members. That is, the first slider 41 drives the sampling needle 21 to extend from the housing 10. The second slider 51 drives the cannula needle 22 to extend from the housing 10.

[0077] The first locking member 63 and the second locking member 64 are both disposed within the receiving cavity 11 via torsion springs and rotate about an axis perpendicular to the inner wall of the housing 10. When the first power assembly 40 and the second power assembly 50 are in an energy storage state, the first locking member 63 and the second locking member 64 rotate counterclockwise and abut against the first slider 41 and the second slider 51 respectively, restricting the movement of the first slider 41 and the second slider 51, and compressing the first elastic member 42 and the second elastic member 52 to store energy. Correspondingly, when it is necessary to release the first power assembly 40 and the second power assembly 50, the linkage frame 61 moves into the housing 10, causing the first locking member 63 and the second locking member 64 to rotate clockwise, thereby releasing the first slider 41 and the second slider 51 respectively, and causing the first elastic member 42 and the second elastic member 52 to release energy, pushing the first slider 41 and the second slider 51 to move, thereby extending the sampling needle 21 and the cannula needle 22 from the housing 10. Both the first power assembly 40 and the second power assembly 50 use elastic elements to store energy, providing fast and reliable firing power. At the same time, the stability of the energy storage state is ensured through the cooperation of corresponding sliders and locking elements.

[0078] Simultaneously, pressing the second engagement element 32 alone will retract the cannula 22, allowing it to be used for sampling. When it is necessary to switch the first power assembly 40 and the second power assembly 50 to an energy storage state, the second engagement element 32 can be pressed first, followed by the first engagement element 31, to sequentially switch the second power assembly 50 and the first power assembly 40 to the energy storage state. Alternatively, pressing only the first engagement element 31, or simultaneously pressing both the first engagement element 31 and the second engagement element 32, can simultaneously switch the first power assembly 40 and the second power assembly 50 to the energy storage state.

[0079] In some embodiments of this application, the first stopper 31 may have a slot. The side wall of the first slider 41 has a protrusion 71, and the first stopper 31 and the first slider 41 are connected by engaging the protrusion 71 with the slot. Correspondingly, the second stopper 32 may also have a slot. The side wall of the second slider 51 has a protrusion 71, and the second stopper 32 and the second slider 51 are connected by engaging the protrusion 71 with the slot.

[0080] Optionally, both the first elastic element 42 and the second elastic element 52 can be springs.

[0081] In some embodiments of this application, such as Figure 8 and Figure 9 As shown, both the first locking member 63 and the second locking member 64 have mating surfaces. Figure 9As shown, the linkage frame 61 is provided with a first abutting inclined surface 611 and a second abutting inclined surface 612 corresponding to the positions of the first locking member 63 and the second locking member 64, respectively. When the linkage frame 61 moves from the locked position to the released position, the first abutting inclined surface 611 abuts against the mating surface of the first locking member 63, and the second abutting inclined surface 612 abuts against the mating surface of the second locking member 64. The distance between the first abutting inclined surface 611 and the first locking member 63 is less than the distance between the second abutting inclined surface 612 and the second locking member 64.

[0082] Specifically, because the distance between the first abutting inclined surface 611 and the first locking member 63 is less than the distance between the second abutting inclined surface 612 and the second locking member 64, when the linkage frame 61 moves, the first abutting inclined surface 611 first contacts the mating surface of the first locking member 63, causing it to rotate and release the first power assembly 40. Subsequently, the second abutting inclined surface 612 contacts the mating surface of the second locking member 64, causing it to rotate and release the second power assembly 50. The distance difference design ensures a time delay. This allows for an orderly firing sequence where the sampling needle 21 fires first and the cannula needle 22 fires later, avoiding interference during tissue sampling and improving sampling accuracy.

[0083] In some embodiments of this application, such as Figures 5-8 As shown, the biopsy ablation needle 100 also includes a first switch 81 and a second switch 82. Both the first switch 81 and the second switch 82 are connected to the housing 10 by springs, and the extension ends of both the first switch 81 and the second switch 82 have bevels. The linkage frame 61 has a first beveled groove 613 and a second beveled groove 614 corresponding to the positions of the first switch 81 and the second switch 82, respectively. The length of the bevel of the first beveled groove 613 is less than the length of the bevel of the second beveled groove 614. When the extension end of the first switch 81 abuts against the first beveled groove 613, the linkage frame 61 changes the first power component 40 from an energy-storing state to a release state; when the extension end of the second switch 82 abuts against the second beveled groove 614, the linkage frame 61 sequentially changes the first power component 40 and the second power component 50 from an energy-storing state to a release state.

[0084] Specifically, when the first switch 81 is pressed, the inclined surface of the extension end of the first switch 81 abuts against the first inclined groove 613, the linkage 61 moves a short distance, and the first power component 40 is released. When the second switch 82 is pressed, the inclined surface of the extension end of the second switch 82 abuts against the second inclined groove 614, the linkage 61 moves a longer distance, and the second power component 50 is released.

[0085] Furthermore, if the second switch 82 is pressed directly without pressing the first switch 81, the second switch 82, when abutting against the second inclined groove 614, pushes the linkage frame 61 towards the interior of the housing 10, causing the first abutting inclined surface 611 to first contact the mating surface of the first locking member 63, causing it to rotate and release the first power component 40 to fire the sampling needle 21. As the second switch 82 continues to be pressed down, the inclined surface of the extended end of the second switch 82 abuts against the second inclined groove 614 and continues to push the linkage frame 61. The second abutting inclined surface 612 contacts the mating surface of the second locking member 64, causing it to rotate and release the second power component 50 to fire the cannula needle 22. This provides another firing control method, allowing the user to achieve single firing or continuous firing by selecting either the first switch 81 or the second switch 82, enhancing operational flexibility. The first switch 81 and the second switch 82 can be pressed to activate the sampling needle 21 and the cannula 22 when the user holds the biopsy ablation needle 100 horizontally. The push-button lever 62 can be pressed to activate the sampling needle 21 and the cannula 22 when the user holds the biopsy ablation needle 100 vertically.

[0086] As can be seen from the preceding text, such as Figure 2 , Figure 3 and Figures 5-9 As shown, the linkage component 60 includes a push rod 62, which extends from the end of the housing 10 opposite to the end where the sampling component 20 is fired. That is, when the sampling component 20 is fired from one end of the housing 10 along its length, the push rod 62 extends from the other end of the housing 10 along its length.

[0087] In some embodiments of this application, when the push rod 62 is pressed, the linkage component 60 moves within the housing 10, and the first power component 40 changes from an energy storage state to a release state, or the first power component 40 and the second power component 50 change from an energy storage state to a release state in sequence.

[0088] Specifically, pressing the lever 62 changes the first power assembly 40 from a stored state to a released state, meaning that only the sampling needle 21 is fired at a time, without firing the cannula needle 22. Alternatively, pressing the lever 62 causes the first power assembly 40 and the second power assembly 50 to sequentially change from a stored state to a released state, thus rapidly firing the sampling needle 21 and the cannula needle 22 in sequence. Furthermore, after firing the sampling needle 21 by pressing the lever 62, the cannula needle 22 can be fired again by pressing the lever 62 when it is necessary to fire the cannula needle 22.

[0089] In some embodiments of this application, when the first switch 81 is pressed, the first power component 40 can change from an energy storage state to a release state. Specifically, pressing the first switch 81 only fires the sampling needle 21 and not the cannula needle 22, thereby achieving separate control over the firing time of the sampling needle 21 and the cannula needle 22.

[0090] In some embodiments of this application, when the second switch 82 is pressed, the second power component 50 can change from an energy storage state to a release state, or the first power component 40 and the second power component 50 can change from an energy storage state to a release state in sequence.

[0091] Specifically, pressing the first switch 81 will fire the sampling needle 21. Pressing the second switch 82 at this time will fire only the cannula needle 22. Alternatively, if neither the sampling needle 21 nor the cannula needle 22 is fired, pressing the second switch 82 directly will fire the sampling needle 21 and the cannula needle 22 quickly and sequentially.

[0092] In summary, the biopsy ablation needle 100 of this application has multiple firing control methods and multiple firing modes. The sampling component 20 can be fired via the first switch 81 and the second switch 82, facilitating horizontal use when the user holds the biopsy ablation needle 100. The sampling component 20 can also be fired by pressing the lever 62, facilitating vertical use when the user holds the biopsy ablation needle 100. Furthermore, the firing time of the sampling needle 21 or the cannula 22 can be controlled to be fired individually. The sampling needle 21 and the cannula 22 can also be fired rapidly and sequentially.

[0093] According to the biopsy ablation needle 100 of this application, when the user uses the biopsy ablation needle 100 horizontally, the sampling needle 21 and the cannula needle 22 can be fired respectively by pressing the first switch 81 and the second switch 82. Alternatively, when the user uses the biopsy ablation needle 100 vertically, the firing of the sampling needle 21 and the cannula needle 22 can be controlled by pressing the lever 62. These multiple firing modes provide greater ease of use for the user. The first power assembly 40 and the second power assembly 50 can be precisely controlled to transition from an energy storage state to a release state, thereby determining the timing of the sampling needle 21 and the cannula needle 22 extending from the housing 10. This overcomes the shortcomings of existing methods that automatically complete all steps once triggered, making it impossible to fine-tune according to the actual situation during the procedure. It is particularly suitable for complex sampling scenarios where the sampling needle 21 needs to be inserted for positioning first, and then the cannula needle 22 needs to be fired at the optimal moment to complete the cutting. The user can achieve single or continuous firing through the first switch 81 or the second switch 82, enhancing operational flexibility. This means that when the user holds the biopsy ablation needle 100 horizontally, they can first fire the sampling needle 21 by pressing the first switch 81, and then fire the cannula 22 by pressing the second switch 82 when needed. Alternatively, the user can directly press the second switch 82 to fire the sampling needle 21 and the cannula 22 quickly and sequentially. Alternatively, the user can fire the sampling needle 21 by pressing the lever 62, and then fire the cannula 22 by pressing the lever 62 again at an appropriate time. Furthermore, the user can directly press the lever 62 to fire the sampling needle 21 and the cannula 22 quickly and sequentially.

[0094] In some embodiments of this application, such as Figure 5 As shown, the linkage assembly 60 also includes a fixed plate 65 and a third elastic element 66. The fixed plate 65 is connected to the housing 10, and the two ends of the third elastic element 66 are respectively connected to the fixed plate 65 and the end of the linkage frame 61 opposite to the push rod 62. The third elastic element 66 causes the linkage frame 61 to automatically return to the locked position after release, reducing the manual shifting steps and improving the ease of operation.

[0095] In some embodiments of this application, the biopsy ablation needle 100 may further include an LED light and a buzzer. The LED light may be configured to illuminate different colors depending on the usage situation, or it may flash or remain constantly lit to provide a prompt depending on the usage situation. Similarly, a buzzer may be configured to indicate different usage situations.

[0096] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the application to other occasions without modification, should all be considered within the scope of protection of this application.

Claims

1. A biopsy ablation needle, characterized in that, The biopsy ablation needle (100) includes a housing (10), a sampling component (20), and an ablation component (90). The housing (10) has a receiving cavity (11) inside, and the ablation component (90) is located in the receiving cavity (11). The sampling component (20) includes a sampling needle (21) and a cannula needle (22) arranged coaxially. The sampling needle (21) passes through the inside of the cannula needle (22). The ablation component (90) includes a first conductive ring (91) and a second conductive ring (93). The first conductive ring (91) is clamped in the sampling needle (21), and the second conductive ring (93) is clamped in the cannula needle (22). The first conductive ring (91) and the second conductive ring (93) are respectively electrically connected to the two poles of the output end of the power supply device. The sampling needle (21) and the cannula needle (22) are insulated from each other.

2. The biopsy ablation needle according to claim 1, characterized in that, The biopsy ablation needle (100) also includes a first insulating layer, which is disposed outside the sampling needle (21). The first insulating layer is not covered at the tip of the sampling needle (21) and at the position corresponding to the first conductive ring (91) after the sampling needle (21) extends out of the housing (10).

3. The biopsy ablation needle according to claim 2, characterized in that, The biopsy ablation needle (100) further includes a first power component (40) and a second power component (50) disposed inside the housing (10). The sampling needle (21) is connected to the first power component (40), and the cannula needle (22) is connected to the second power component (50). Both the first power component (40) and the second power component (50) have an energy storage state and a release state. When the first power component (40) and the second power component (50) change from the energy storage state to the release state, the sampling needle (21) and the cannula needle (22) can be extended from the housing (10) respectively.

4. The biopsy ablation needle according to claim 3, characterized in that, The biopsy ablation needle (100) further includes a latching assembly (30) and a linkage assembly (60). The latching assembly (30) extends into the receiving cavity (11) from one end of the housing (10) along its length. The latching assembly (30) includes a first latching member (31) and a second latching member (32). The latching assembly (30) is capable of reciprocating along the length of the housing (10). The first latching member (31) can restore the first power component (40) from the released state to the stored state. The second latching member (32) can restore the second power component (50) from the released state to the stored state. The linkage assembly (60) can change the first power component (40) and the second power component (50) from the stored state to the released state.

5. The biopsy ablation needle according to claim 4, characterized in that, The linkage assembly (60) includes a linkage frame (61), a push rod (62), a first locking member (63), and a second locking member (64). One end of the linkage frame (61) is fixedly connected to the push rod (62). The push rod (62) extends from the end of the housing (10) away from the gear engagement assembly (30). The linkage frame (61) can move along the length of the housing (10). The first locking member (63) and the second locking member (64) can both rotate within the receiving cavity (11) to limit and release the first power assembly (40) and the second power assembly (50) respectively.

6. The biopsy ablation needle according to claim 5, characterized in that, The biopsy ablation needle (100) also includes a limiting member (70), which is a plate-shaped structure and located at the connection between the linkage frame (61) and the push rod (62). The surface of the limiting member (70) is provided with a protrusion (71). The inner wall of the housing (10) has a limiting seat (12) for accommodating the limiting member (70). The inner wall of the limiting seat (12) is provided with a plurality of grooves (121) corresponding to the protrusion (71). The protrusion (71) can be engaged with the plurality of grooves (121) respectively. The ends of the first hanging member (31) and the second hanging member (32) are both provided with inclined pressing surfaces. The upper part of the limiting member (70) is provided with an inclined surface corresponding to the inclined pressing surface.

7. The biopsy ablation needle according to claim 6, characterized in that, The limiting member (70) has a first stepped surface (72) and a through hole (73) on its surface facing the push rod (62). The side wall of the limiting member (70) has a push member (74). The push member (74) extends from the wall of the housing (10) at the corresponding position. The limiting member (70) can reciprocate between the limiting position, the abutting position and the loosening position in sequence. When the limiting member (70) is in the limiting position, the end of the push rod (62) abuts against the surface of the limiting member (70), and the first power assembly (40) and the second power assembly (50) are both in the energy storage state. When the limiting member (70) is in the abutting position, the end of the push rod (62) abuts against the first step surface (72), the first power component (40) changes from the energy storage state to the release state, and the sampling needle (21) extends out from the housing (10). When the limiting member (70) is in the loosened position, the push rod (62) passes through the through hole (73), and the first power assembly (40) and the second power assembly (50) are both in the released state, which can sequentially and respectively cause the sampling needle (21) and the cannula needle (22) to extend out of the housing (10).

8. The biopsy ablation needle according to claim 7, characterized in that, The first power assembly (40) includes a first slider (41), a first elastic element (42) and a first baffle (43). The first elastic element (42) is disposed between the first slider (41) and the first baffle (43). The first latching element (31) is connected to the first slider (41). The second power assembly (50) includes a second slider (51), a second elastic element (52) and a second baffle (53). The second elastic element (52) is disposed between the second slider (51) and the second baffle (53). The second latching element (32) is connected to the second slider (51). The first baffle (43) and the second baffle (53) are both connected to the inner wall of the housing (10). When the first power component (40) is in the energy storage state, the first slider (41) abuts against the first locking member (63), and when the second power component (50) is in the energy storage state, the second slider (51) abuts against the second locking member (64).

9. The biopsy ablation needle according to claim 8, characterized in that, Both the first locking member (63) and the second locking member (64) have mating surfaces. The linkage frame (61) is provided with a first abutting inclined surface (611) and a second abutting inclined surface (612) corresponding to the positions of the first locking member (63) and the second locking member (64). When the linkage frame (61) moves from the locked position to the released position, the first abutting inclined surface (611) abuts against the mating surface of the first locking member (63), and the second abutting inclined surface (612) abuts against the mating surface of the second locking member (64). The distance between the first abutting inclined surface (611) and the first locking member (63) is less than the distance between the second abutting inclined surface (612) and the second locking member (64).

10. The biopsy ablation needle according to claim 9, characterized in that, The biopsy ablation needle (100) also includes a first switch (81) and a second switch (82). The first switch (81) and the second switch (82) are both connected to the housing (10) by springs. The extension ends of the first switch (81) and the second switch (82) are both inclined. The linkage frame (61) is provided with a first inclined groove (613) and a second inclined groove (614) respectively corresponding to the positions of the first switch (81) and the second switch (82). The inclined length of the first inclined groove (613) is less than the inclined length of the second inclined groove (614). When the extended end of the first switch (81) abuts against the first inclined groove (613), the linkage frame (61) changes the first power component (40) from the energy storage state to the release state; When the extended end of the second switch (82) abuts against the second inclined groove (614), the linkage frame (61) sequentially changes the first power component (40) and the second power component (50) from the energy storage state to the release state.

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