Ablation device and biopsy ablation device

Abstract

The application discloses an ablation device and biopsy ablation device, which comprises a first sleeve and a second sleeve, the first sleeve is made of conductive material and is hollow inside, the second sleeve is made of insulating material, the rear end of the first sleeve is connected with the sleeve head, the rear end of the second sleeve is connected with the sleeve fixing block, the corresponding first adjusting mechanism is arranged between the sleeve head and the sleeve fixing block, when the sleeve head and the sleeve fixing block are matched, the second sleeve is sleeved outside the first sleeve, and the front end of the first sleeve is exposed relative to the second sleeve; the first connecting part is arranged on the sleeve head. The application is more convenient to use and can adapt to the complex requirements in the tumor treatment process.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of medical devices, in particular to an ablation device and a biopsy ablation device. BACKGROUND

[0002] Under the background that minimally invasive treatment methods are gradually accepted by doctors and patients, various tissue ablation technologies are becoming an important means in the field of tumor treatment and the like.

[0003] At present, the commonly used method is to make the cells in the tumor necrotic by temperature, chemistry and the like. The temperature ablation can be divided into cold field or hot field ablation, which functions to make the tumor cells dehydrate, form ice crystals, or make the tumor necrotic by thermal coagulation. However, due to the influence of heat conduction, the above ablation methods are easy to affect the surrounding tissues, and are easy to cause harm to the surrounding normal tissues, especially in the case that there are blood vessels or nerves around, which greatly increases the risk of operation.

[0004] Compared with radiofrequency, freezing and microwave ablation, pulsed electric field ablation is a new type of ablation method using high-voltage pulsed electric field as energy, which does not rely on temperature effect, but forms irreversible perforation on the cell membrane by releasing high-voltage electric pulse, destroys the balance in the cell, and thus makes the cell rapidly apoptotic.

[0005] When pulsed electric field ablation is performed for tumor ablation treatment, the ablation needle is generally punctured in the lesion to emit high-voltage pulses. Pulsed electric field ablation has the advantages of short ablation time, protection of important tissues such as blood vessels and nerves in the treatment area, no influence of heat pool effect, and clear treatment boundary.

[0006] However, in the clinical treatment process, the specific scene of ablation is various, but the existing ablation device has single function, cannot conveniently adjust the ablation area, and cannot meet the requirements of clinical multifunction. SUMMARY

[0007] The purpose of the present application is to provide an ablation device and a biopsy ablation device, which are more convenient to use and can adapt to the complex requirements in the process of tumor treatment.

[0008] The present application provides an ablation device, which comprises a first sleeve and a second sleeve, the first sleeve is made of conductive material and is hollow inside, the second sleeve is made of insulating material, the rear end of the first sleeve is connected with the sleeve head, the rear end of the second sleeve is connected with the sleeve fixing block, a corresponding first adjusting mechanism is arranged between the sleeve head and the sleeve fixing block, when the sleeve head and the sleeve fixing block cooperate, the second sleeve is sleeved outside the first sleeve, and the front end of the first sleeve is exposed relative to the second sleeve; a first connecting part is arranged on the sleeve head.

[0009] In one of the embodiments, the device further comprises an electric field ablation needle, a third sleeve and an ablation handle; the electric field ablation needle is made of conductive material, the third sleeve is made of insulating material, the third sleeve is hollow, the third sleeve is sleeved outside the electric field ablation needle, the electric field ablation needle is connected with the ablation handle, the third sleeve is connected with the adjusting component, and a corresponding second adjusting mechanism is arranged between the ablation handle and the adjusting component; the second sleeve is hollow inside, the second sleeve is sleeved outside the first sleeve, the diameter of the first sleeve is larger than that of the third sleeve, and the first sleeve is sleeved outside the third sleeve.

[0010] In one of the embodiments, when the ablation handle cooperates with the adjusting component, the front end of the electric field ablation needle is exposed relative to the second sleeve; the ablation handle is hollow inside to form a sliding inner cavity, the adjusting component is arranged in the sliding inner cavity, and the third sleeve is fixedly connected with the adjusting component; a second connecting portion is arranged on the ablation handle, and the first connecting portion can be detachably connected with the second connecting portion.

[0011] In one of the embodiments, a sliding groove is arranged on the ablation handle, at least two positioning notches are arranged on the sliding groove in the longitudinal direction, the adjusting component comprises a sliding block and a pressing piece, the sliding block is fixedly connected with the pressing piece, the pressing piece is provided with a positioning elastic sheet, the sliding block is arranged in the sliding inner cavity, the positioning elastic sheet cooperates with the positioning notches, the pressing piece extends out of the sliding groove, and the first adjusting device is the sliding groove, the positioning notches and the pressing piece.

[0012] The application further provides a biopsy ablation device, which comprises a sampling needle, a biopsy handle and the ablation device as described above,

[0013] The first sleeve is slidably sleeved outside the sampling needle and cooperates with the sampling needle;

[0014] The biopsy handle is arranged at the rear end of the sampling needle, a third connecting portion is arranged on the biopsy handle, and a second connecting portion is arranged on the ablation handle;

[0015] The first connecting portion can be detachably connected with the third connecting portion.

[0016] In one of the embodiments, the needle body of the electric field ablation needle is made of conductive material and forms a conductive layer on the outer surface of the needle body, the handle is made of insulating material, and an insulating film layer is arranged on the outer surface of the needle body, which separates the conductive layer into at least two conductive segments.

[0017] In one of the embodiments, the ablation handle part comprises a handle main body and a detachable head, the handle main body comprises a front end handle and a rear end handle, the handle main body and the detachable head are connected, the front end handle and the rear end handle are detachably connected, a conductive part is arranged in the handle main body, the electric field ablation needle is inserted into the conductive part and is in conductive connection with the conductive part.

[0018] In one of the embodiments, a first conductive wire and a second conductive wire are arranged at the rear end of the ablation handle part, the first conductive wire is in conductive connection with the electric field ablation needle, and the second conductive wire is in conductive connection with the first sleeve.

[0019] In one of the embodiments, a first adjusting screw thread is arranged on the outer wall of the sleeve head, a second adjusting screw thread is arranged on the inner wall of the sleeve fixing block, and the first adjusting screw thread cooperates with the second adjusting screw thread; or, a plurality of clamping notches are longitudinally arranged on the outer wall of the sleeve head, and a clamping protrusion is arranged on the inner wall of the sleeve fixing block, and the clamping protrusion cooperates with the clamping notches.

[0020] In one of the embodiments, at least two protruding buckle positions are arranged on the sleeve head, and the first connecting part is the protruding buckle position; at least two clamping notches are arranged on the biopsy handle part, and the third connecting part is the clamping notch, and the protruding buckle position cooperates with the clamping notch; and / or, at least two protruding buckle positions are arranged on the sleeve head, and the first connecting part is the protruding buckle position; at least two clamping notches are arranged on the ablation handle part, and the second connecting part is the clamping notch, and the protruding buckle position cooperates with the clamping notch.

[0021] In one of the embodiments, the front end head of the sampling needle has a first sharp end, an extraction recess is arranged on the sampling needle, the extraction recess is located at the rear side of the front end head, and when the sampling needle is in sliding cooperation with the first sleeve, the first sleeve closes or opens the extraction recess.

[0022] In one of the embodiments, the biopsy handle part comprises an outer shell, a sliding part, an elastic member and an energy storage cocking member, the sliding part is installed on the outer shell and can slide in cooperation with the outer shell, the sampling needle is fixedly connected with the sliding part and the energy storage cocking member, the elastic member is arranged between the sliding part and the outer shell, a locking part is arranged in the longitudinal sliding direction of the sliding part and the outer shell, and an unlocking part is arranged on the energy storage cocking member and corresponds to the locking part.

[0023] In one of the embodiments, the outer shell comprises an upper shell and a base body, the upper shell is fixedly connected with the base body, an elastic lock piece is arranged on the base body, the lock piece is provided with a lock platform, an unlocking slope and a guide slope, the sliding component is provided with a lock component, a sliding sheet and a needle connecting part, the lock component corresponds to the unlocking slope and the lock platform, when the lock component cooperates with the lock platform, the sliding component is locked, when the unlocking part cooperates with the unlocking slope, the sliding component is unlocked.

[0024] In one of the embodiments, the outer shell comprises an upper shell and a base body, the upper shell is fixedly connected with the base body, an elastic lock piece is arranged on the base body, the lock piece is provided with a lock platform, an unlocking slope and a guide slope, the sliding component is provided with a lock component, a sliding sheet and a needle connecting part, the lock component corresponds to the unlocking slope and the lock platform, when the lock component cooperates with the lock platform, the sliding component is locked, when the unlocking part cooperates with the unlocking slope, the sliding component is unlocked.

[0025] The technical scheme provided by the present application has the following advantages and effects:

[0026] In the ablation device, the second sleeve serves as an ablation electrode of the ablation device, can adjust the exposed length of the first sleeve through the sleeve head and the sleeve fixing block, and further adjust the ablation area; the sleeve head is provided with a first connecting part, can be detachably connected with other devices, such as inserting an electric field ablation needle into the first sleeve and serving as a second ablation electrode of the ablation device, and can connect other devices on the sleeve head to meet the complex needs of clinic.

[0027] The ablation device comprises an electric field ablation needle, a first sleeve, a second sleeve and a third sleeve, the third sleeve is sleeved outside the electric field ablation needle, the first sleeve is sleeved outside the third sleeve, and the second sleeve is sleeved outside the first sleeve, the electric field ablation needle and the first sleeve are made of conductive material, the third sleeve and the second sleeve are made of insulating material, the exposed length of the electric field ablation needle relative to the third sleeve and the exposed length of the first sleeve relative to the second sleeve can be adjusted through the connecting structure at the rear end, and further the ablation area of the first ablation electrode (electric field ablation needle) and the second ablation electrode (second sleeve) can be adjusted to meet the complex needs of clinic. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the appearance diagram of the biopsy ablation device in the embodiment one of the present application;

[0029] Figure 2 is the sectional view of the biopsy ablation device in the embodiment one of the present application;

[0030] Figure 3 is the exploded view of the biopsy ablation device in the embodiment one of the present application;

[0031] Figure 4 is the first use state view of the biopsy ablation device in the embodiment one of the present application;

[0032] Figure 5 is the second use state view of the biopsy ablation device in the embodiment one of the present application;

[0033] Figure 6 is the third use state view of the biopsy ablation device in the embodiment one of the present application;

[0034] Figure 7 is the cross-sectional enlarged view of the sampling needle and the first sleeve in the embodiment one of the present application;

[0035] Figure 8 is the perspective view of the base body in the embodiment one of the present application;

[0036] Figure 9 is the top view of the sliding component in the embodiment one of the present application;

[0037] Figure 10 is the side view of the sliding component in the embodiment one of the present application;

[0038] Figure 11 is the bottom view of the sliding component in the embodiment one of the present application;

[0039] Figure 12 is the side view of the energy storage cocking piece in the embodiment one of the present application;

[0040] Figure 13 is the partial enlarged view of the biopsy ablation device as an electric field ablation needle in the embodiment one of the present application;

[0041] Figure 14 is the outer shape view of the biopsy ablation device in the embodiment two of the present application;

[0042] Figure 15 is the partial enlarged view of the biopsy ablation device as an electric field ablation needle in the embodiment two of the present application;

[0043] Figure 16 is the partial enlarged view of the biopsy ablation device as an electric field ablation needle in the embodiment three of the present application;

[0044] Figure 17 is the outer shape view of the biopsy ablation device in the embodiment four of the present application;

[0045] Figure 18is a partial enlarged view of the biopsy ablation device as an electric field ablation needle in the fourth embodiment of the present application;

[0046] Figure 19 is an external view of the biopsy ablation device in the fifth embodiment of the present application;

[0047] Figure 20 is a partial enlarged view of the biopsy ablation device as an electric field ablation needle in the fifth embodiment of the present application;

[0048] Figure 21 is an external view of the biopsy ablation device in the sixth embodiment of the present application;

[0049] Figure 22 is a sectional view of the biopsy ablation device in the sixth embodiment of the present application;

[0050] Figure 23 is an exploded view of the biopsy ablation device in the sixth embodiment of the present application;

[0051] Figure 24 is a second use state view of the biopsy ablation device in the sixth embodiment of the present application;

[0052] BRIEF DESCRIPTION OF THE DRAWINGS

[0053] 111, third sleeve, 112, first sleeve, 113, second sleeve, 13, electric field ablation needle, 131, insulating film layer, 132, conductive segment,

[0054] 23, ablation handle part, 2301, first conductive wire, 2302, second conductive wire, 2303, third conductive wire, 304, fourth conductive wire, 2305, air pipe, 232, front end handle, 233, rear end handle, 234, dismounting head, 24, conductive part,

[0055] 251, internal passage, 252, heating element, 253, temperature measuring element, 254, inner tube body,

[0056] 31, protruding buckle, 32, clamping notch, 33, positioning head, 34, insertion port,

[0057] 41, sliding inner cavity, 42, adjusting part, 421, sliding block, 422, pressing piece, 43, positioning elastic sheet, 44, positioning recess, 45, sliding groove,

[0058] 51, first sharp end, 52, extraction recess,

[0059] 70, sleeve head, 701, clamping notch, 71, sampling needle, 72, sleeve fixing block, 721, clamping protrusion,

[0060] 80, biopsy handle part, 82, upper housing, 83, base body, 831, elastic locking part, 8311, locking platform, 8312, unlocking slope, 8313, guiding slope, 8322, first sliding groove, 8323, second sliding groove,

[0061] 832, annular pull ear, 84, front end cover body, 811, hinged shaft,

[0062] 85, sliding part, 851, locking part, 852, sliding sheet, 853, needle body connecting part, 854, pulling hole,

[0063] 86, energy storage charging part, 861, pulling handle part, 862, connecting rod, 863, unlocking part, 864, pulling hook,

[0064] 87, elastic part, 871, elastic sliding tube, 872, limiting column. DETAILED DESCRIPTION

[0065] In order to facilitate the understanding of the present application, specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings.

[0066] Unless specifically stated or otherwise defined, the "first, second" used herein are only used for distinguishing names, and do not represent specific quantity or order.

[0067] Unless specifically stated or otherwise defined, the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0068] It should be noted that "fixed to", "connected to" herein can be directly fixed or connected to an element, or indirectly fixed or connected to an element.

[0069] Embodiment one

[0070] As Figures 1 to 13As shown, the biopsy ablation device comprises an ablation handle part 23, a biopsy handle part 80, a sampling needle 71, an electric field ablation needle 13, a third sleeve 111, a first sleeve 112, a second sleeve 113 and a sleeve head 70, the third sleeve 111 and the second sleeve 113 are made of insulating material (such as plastic), the electric field ablation needle 13 and the first sleeve 112 are made of conductive material (such as stainless steel), and the first sleeve 112 is hollow inside, the electric field ablation needle 13 and the third sleeve 111 are connected with the ablation handle part 23, and the third sleeve 111 is sleeved outside the electric field ablation needle 13, the rear end of the first sleeve 112 is connected with the sleeve head 70, the rear end of the second sleeve 113 is connected with a sleeve fixing block 72, and a corresponding adjusting mechanism is arranged between the sleeve head 70 and the sleeve fixing block 72, when the sleeve head 70 cooperates with the sleeve fixing block 72, the second sleeve 113 is sleeved outside the first sleeve 112, and the front end of the first sleeve 112 is exposed relative to the second sleeve 113; the diameter of the first sleeve 112 is larger than the diameter of the third sleeve 111, and the first sleeve 112 can cooperate with the third sleeve 111; a first connecting part is arranged on the sleeve head 70, and a second connecting part is arranged on the ablation handle part 23; the first connecting part can be detachably connected with the second connecting part. The first sleeve 112 is slidably sleeved outside the sampling needle 71 and cooperates with the sampling needle 71, the biopsy handle part 80 is arranged at the rear end of the sampling needle 71, a third connecting part is arranged on the biopsy handle part 80, and a second connecting part is arranged on the ablation handle part 23; the first connecting part can be detachably connected with the third connecting part.

[0071] The specific connection structure is as follows:

[0072] The ablation handle part 23 comprises a handle main body and a detachable head 234, the handle main body comprises a front end handle 232 and a rear end handle 233, the handle main body and the detachable head 234 are connected, the front end handle 232 and the rear end handle 233 are detachably connected, a conductive part 24 is arranged in the handle main body, the electric field ablation needle 13 is inserted into the conductive part 24 and conductively connected with the conductive part 24. At least two protruding buckle positions 31 are arranged on the sleeve head 70, the first connecting part is the protruding buckle position 31; at least two clamping notches 32 are arranged on the biopsy handle part 80, the third connecting part is the clamping notch 32, the protruding buckle position 31 cooperates with the clamping notch 32; and at least two clamping notches 32 are arranged on the ablation handle part 23, the second connecting part is the clamping notch 32, the protruding buckle position 31 cooperates with the clamping notch 32.

[0073] In this embodiment, the electric field ablation needle 13 is sleeved with a third sleeve 111, and the first sleeve 112 is sleeved with a second sleeve 113. When the first connecting part is connected with the second connecting part, the electric field ablation needle 13 (and the third sleeve 111 thereof) can be inserted into the first sleeve 112. The electric field ablation needle 13 serves as the first electrode of the ablation device, and the first sleeve 112 serves as the second electrode of the ablation device, thereby forming a bipolar ablation structure of the ablation device. When the first connecting part is disassembled from the second connecting part, the electric field ablation needle 13 can be extracted from the first sleeve 112. The first sleeve 112 can be connected with other structures, so that the ablation device has more functions to meet the complex needs in the clinical treatment process.

[0074] Through the cooperation between the protruding buckle 31 and the clamping notch 32, detachable connection between the sleeve head 70 and the biopsy handle 80 can be realized. After the positioning head 33 is arranged at the rear end of the sleeve head 70, the positioning head 33 can be clamped into the insertion opening 34 when the detachable connection is performed, so that the connection and fixation of the two are more reliable.

[0075] The needle body of the electric field ablation needle 13 is made of conductive material and has a conductive layer formed on the outer surface of the needle body. The handle is made of insulating material and has an insulating film layer 131 arranged on the outer surface of the needle body. The insulating film layer 131 divides the conductive layer into at least two conductive segments 132. When the electric field pulse ablation is performed, each conductive segment 132 forms a respective ablation electric field. The ablation region is segmented by the separate ablation electric fields, which avoids the defects caused by the excessively large ablation region, avoids the increase of the temperature of the ablation region, and is easier to control the ablation region and reduce the damage to the normal human tissue. When the ablation of a large tumor is performed, the needle does not need to be retracted and repositioned, which reduces the metastasis of tumor cells and greatly reduces the risk of surgery.

[0076] The rear end of the ablation handle 23 is provided with a first conductive wire 2301 and a second conductive wire 2302. The first conductive wire 2301 is in conductive connection with the electric field ablation needle 13, and the second conductive wire 2302 is in conductive connection with the first sleeve 112. The first conductive wire 2301 can provide high-voltage pulse power for the ablation handle 23.

[0077] The front end head of the sampling needle 71 has a first sharp end 51. The sampling needle 71 is provided with an extraction recess 52 located at the rear side of the front end head. When the sampling needle 71 is in sliding connection with the first sleeve 112, the first sleeve 112 closes or opens the extraction recess 52.

[0078] The biopsy handle 80 comprises an outer shell, a sliding component 85, a spring 87, an energy storage charging component 86 and a front end cover 84. The outer shell is provided with a hinge shaft 811, and the front end cover 84 is movably arranged at the front end of the outer shell through the hinge shaft 811. The outer shell comprises an upper shell 82 and a base body 83. The sliding component 85 is installed on the outer shell and can slide relative to the outer shell. The sampling needle 71 is fixedly connected with the sliding component 85 and the energy storage charging component 86. The spring 87 is arranged between the sliding component 85 and the outer shell, and the front end of the spring 87 is limited by a limiting column 872 on the sliding component 85, and the rear end of the spring 87 is limited by an elastic sliding tube 871. A locking component 851 is arranged in the longitudinal sliding direction of the sliding component 85 and the outer shell. An unlocking portion 863 is arranged on the energy storage charging component 86, and the unlocking portion 863 corresponds to the locking component 851. The upper shell 82 is fixedly connected with the base body 83. An elastic locking component 831 is arranged on the base body 83, and the elastic locking component 831 has a locking table 8311, an unlocking slope 8312 and a guide slope 8313. The sliding component 85 is provided with the locking component 851, a sliding piece 852 and a needle body connecting portion 853. The two sides of the sliding component 85 are provided with the sliding pieces 852. The sliding component 85 is matched with the first sliding groove 8322 through the two sliding pieces 852, so that the sliding component 85 can slide in the base body 83. The bottom of the sliding component 85 is provided with the locking component 851, which corresponds to the guide slope 8313 and the locking table 8311. When the sliding component 85 slides, the locking component 851 can act on the guide slope 8313, and the elastic locking component 831 is slightly deformed. When the locking component 851 slides to the position of the locking table 8311, the sliding component 85 is locked. The upper part of the sliding component 85 is provided with the needle body connecting portion 853, and the sampling needle 71 is fixedly connected with the needle body connecting portion 853. The rear end of the sliding component 85 is provided with a tail hole. The energy storage charging component 86 comprises a pulling handle 861, which is fixedly connected with the rear end of the sampling needle 71. The front end of the pulling handle 861 is provided with a connecting rod 862, which penetrates into the second sliding groove 8323, and the front end of the connecting rod 862 is provided with a pull hook 864, which hooks the pulling hole 854 of the sliding component 85. The pulling handle 861 can pull the sliding component 85. When the sliding component 85 overcomes the elastic force of the spring 87, the sliding component 85 moves backward and is locked, and the charging purpose is achieved. When the pulling handle 861 is pushed forward, the unlocking portion 863 at the lower part of the pull hook 864 is matched with the unlocking slope 8312, the elastic locking component 831 is pushed downward, the locking table 8311 is separated from the locking component 851 of the sliding component 85, and the sliding component 85 is unlocked.

[0079] The ablation handle 23 is internally hollow to form a sliding inner cavity 41, and an adjusting component 42 is arranged in the sliding inner cavity 41, the adjusting component 42 comprises a sliding block 421 and a pressing piece 422, and the sliding block 421 is fixedly connected with the pressing piece 422; the electric field ablation needle 13 is fixedly connected with the adjusting component 42, and a sliding groove 45 is arranged on the ablation handle 23, the sliding block 421 is arranged in the sliding inner cavity 41, and the pressing piece 422 extends out of the sliding groove 45. At least two positioning notches 44 are arranged in the longitudinal direction of the ablation handle 23, and a positioning elastic sheet 43 is arranged on the adjusting component 42, and the positioning elastic sheet 43 cooperates with the positioning notches 44. In this embodiment, the exposed length of the electric field ablation needle 13 can be adjusted by adjusting the longitudinal position of the adjusting component 42. After adjustment, the positioning elastic sheet 43 is loosened, and the positioning is performed through the positioning notches 44, so that the electric field ablation needle 13 is prevented from moving longitudinally at will.

[0080] When the biopsy operation is performed, the operator holds the ring-shaped pull ear 832 with one hand, and pulls the lifting handle 861 of the energy storage charging member 86 with the other hand. The energy storage charging member 86 pulls the sliding component 85, the sampling needle 71 connected with the sliding component 85, and moves backward against the elastic force of the elastic member 87. When the sliding component 85 moves to the set position, the position of the sliding component 85 is locked. At this time, the extraction recess 52 of the sampling needle 71 is closed by the outer sleeve. The front end of the biopsy ablation device is inserted into the human tissue, the energy storage charging member 86 is pushed forward, so that the sampling needle 71 reaches the position of the lifting position, and the extraction recess 52 is exposed. When the energy storage charging member 86 is pushed to a certain position, the unlocking portion 863 at the front end of the energy storage charging member 86 unlocks the sliding component 85. The sliding component 85 moves backward quickly under the action of the elastic member 87, and drives the sampling needle 71 to move backward quickly. The human tissue in the extraction recess 52 is left in the outer sleeve through the cutting action of the outer sleeve. When the biopsy ablation device is extracted, the extracted human tissue can be subjected to pathological detection.

[0081] The biopsy ablation device in this embodiment can be used as a biopsy extraction device, and is used for extracting human tissue for biopsy, as shown in Figure 4 The sleeve head 70 at the rear end of the first sleeve 112 and the second sleeve 113 is connected with the ablation handle 23 at the rear end of the electric field ablation needle 13. At this time, the first sleeve 112 and the second sleeve 113 cooperate with the electric field ablation needle 13. The biopsy ablation device can be used as an ablation device, and is used for ablation on a specific part (such as a tumor) of human tissue, as shown in Figure 5 , Figure 6 In Figure 5 , Figure 6 , the exposed length of the first sleeve 112 (that is, the ablation electrode) can be adjusted by adjusting the sleeve head 70 and the sleeve fixing block 72, so that the ablation area is adjusted.

[0082] Example 2

[0083] like Figures 14 to 15 As shown, in this embodiment, the electric field ablation needle 13 has a hollow interior forming an internal channel 251, the front end of which is closed, and a heating element 252 is provided inside the internal channel 251; correspondingly, a third conductive wire 2303 is provided inside the ablation handle portion 23, through which power can be supplied to the heating element 252 inside the electric field ablation needle 31.

[0084] Example 3

[0085] like Figure 16 As shown, in this embodiment, the electric field ablation needle 13 has a hollow interior forming an internal channel 251. The front end of the internal channel 251 is closed, and a temperature sensing element 253 is provided inside the internal channel 251. Correspondingly, a third conductive wire 2303 is provided inside the ablation handle 23, through which the temperature signal of the temperature sensing element 253 can be extracted.

[0086] This embodiment can refer to Embodiment 2. The heating element 153 in Embodiment 2 can be replaced with the temperature measuring element 253 to achieve the temperature measuring function.

[0087] Example 4

[0088] like Figure 17 , Figure 18 As shown, in this embodiment, the electric field ablation needle 13 has a hollow interior forming an internal channel 251. The front end of the internal channel 251 is closed, and a heating element 252 and a temperature measuring element 253 are provided inside the internal channel 251. Correspondingly, a third conductive wire 2303 and a fourth conductive wire 2304 are provided inside the ablation handle 23. The third conductive wire 2303 can provide power to the heating element 252 inside the electric field ablation needle 31, and the fourth conductive wire 2304 can obtain the temperature signal of the temperature measuring element 253.

[0089] Example 5

[0090] like Figure 19 , Figure 20As shown, in the embodiment, the electric field ablation needle 13 is hollow inside to form an internal passage 251, the front end of the internal passage 251 is closed, an inner tube 155 is arranged in the internal passage 251, a first fluid passage is formed in the inner tube 155, a second fluid passage is formed between the inner tube 155 and the electric field ablation needle 31, and the first fluid passage and the second fluid passage are communicated through the front end of the inner tube. Correspondingly, an air pipe 2504 is arranged on the ablation handle 23, through which cooling medium required for cooling ablation can be supplied to the internal passage 251 in the electric field ablation needle 31.

[0091] Embodiment six

[0092] As Figures 21 to 24 shown, in the embodiment, the ablation handle 23 is not provided with an adjusting component, and the exposed length of the electric field ablation needle 13 does not need to be adjusted.

[0093] The remaining structure and principle are the same as those of embodiment one, and will not be described here.

[0094] It can be understood that according to the foregoing embodiments, the inner tube can be arranged in the electric field ablation needle 13 for air cooling, and a heating element and a temperature measuring element can also be arranged in the electric field ablation needle 13 for respectively realizing heating or temperature measurement functions.

[0095] The above embodiments are intended to exemplarily reproduce and deduce the technical solutions of the present application, and to completely describe the technical solutions, purposes and effects of the present application, so as to make the public more thoroughly and comprehensively understand the disclosure of the present application, and not to limit the protection scope of the present application.

[0096] The above embodiments are not based on an exhaustive enumeration of the present application, and there can be many other embodiments not listed. Any replacement and improvement made without violating the concept of the present application is within the protection scope of the present application.

Claims

1. A biopsy ablation device, characterized by, The biopsy device comprises a sampling needle, a biopsy handle and an ablation device; The ablation device comprises a first sleeve and a second sleeve, the first sleeve is made of conductive material and is hollow inside, the second sleeve is made of insulating material, the rear end of the first sleeve is connected with the sleeve head, the rear end of the second sleeve is connected with the sleeve fixing block, the first adjusting mechanism is arranged between the sleeve head and the sleeve fixing block, the second sleeve is sleeved outside the first sleeve when the sleeve head and the sleeve fixing block are matched, and the front end of the first sleeve is exposed relative to the second sleeve; A first connecting part is arranged on the sleeve head; The first sleeve is slidably sleeved outside the sampling needle and matched with the sampling needle, the biopsy handle is arranged at the rear end of the sampling needle, a third connecting part is arranged on the biopsy handle, and the first connecting part is detachably connected with the third connecting part; The biopsy handle comprises an outer shell, a sliding part, an elastic piece, and an energy storage charging piece, the outer shell comprises an upper shell and a base body, the base body is provided with an elastic locking piece, a first sliding groove and a second sliding groove, the sliding part is installed on the outer shell and can slide relative to the outer shell, the elastic piece is arranged between the sliding part and the outer shell, the front end of the elastic piece is limited by a limiting column on the sliding part, the rear end of the elastic piece is limited by an elastic sliding tube, the energy storage charging piece is provided with an unlocking part, a locking part is arranged in the longitudinal sliding direction of the sliding part and the outer shell, and the unlocking part corresponds to the locking part; sliding pieces are arranged on the two sides of the sliding part, the sliding part is matched with the first sliding groove through the sliding pieces on the two sides, and the sliding pieces are slidably matched with the first sliding groove; The energy storage charging piece comprises a pulling handle, a connecting rod and a hook, the front end of the pulling handle is provided with the connecting rod, the connecting rod penetrates into the second sliding groove, the front end of the connecting rod is provided with the hook, the sliding part is provided with a pulling hole, the hook hooks the pulling hole, and the rear end of the sampling needle is fixed on the pulling handle; The elastic locking piece is provided with a locking table, an unlocking slope and a guide slope, the locking part corresponds to the guide slope and the locking table; The sliding part is pulled by the pulling handle, the sliding part moves backward after overcoming the elastic force of the elastic piece and is locked, when the lower part of the hook is matched with the unlocking slope when the pulling handle is pushed forward, the elastic locking piece is pushed downward to make the locking table and the locking part of the sliding part disengage, and the sliding part is unlocked.

2. The biopsy ablation device of claim 1, wherein, The biopsy device further comprises an electric field ablation needle, a third sleeve and an ablation handle; The electric field ablation needle is made of conductive material, the third sleeve is made of insulating material, the third sleeve is hollow, the third sleeve is sleeved outside the electric field ablation needle, the electric field ablation needle is connected with the ablation handle, the third sleeve is connected with the adjusting part, and the second adjusting mechanism is arranged between the ablation handle and the adjusting part; The second sleeve is hollow inside, the second sleeve is sleeved outside the first sleeve, the diameter of the first sleeve is greater than that of the third sleeve, and the first sleeve is sleeved outside the third sleeve.

3. The biopsy ablation device of claim 2, wherein, when the ablation handle portion is engaged with the adjusting member, the front end of the electric field ablation needle is exposed relative to the second sleeve; the ablation handle portion is hollow inside to form a sliding inner cavity, and the adjusting member is arranged in the sliding inner cavity, and the third sleeve is fixedly connected with the adjusting member; a second connecting portion is arranged on the ablation handle portion, and the first connecting portion is detachably connected with the second connecting portion.

4. The biopsy ablation device of claim 3, wherein, a sliding groove is arranged on the ablation handle portion, and at least two positioning notches are arranged on the sliding groove in the longitudinal direction, the adjusting member comprises a sliding block and a pressing member, the sliding block is fixedly connected with the pressing member, the pressing member is provided with a positioning elastic sheet, the sliding block is arranged in the sliding inner cavity, the positioning elastic sheet is matched with the positioning notches, the pressing member is extended from the sliding groove, and the first adjusting mechanism is the sliding groove, the positioning notches and the pressing member.

5. The biopsy ablation device of claim 2, wherein the biopsy ablation device is configured to be inserted into the patient's body through a cannula. the needle body of the electric field ablation needle is made of an electrically conductive material and is provided with an electrically conductive layer on the outer surface of the needle body, the ablation handle portion is made of an insulating material, and an insulating film layer is arranged on the outer surface of the needle body, the insulating film layer separates the electrically conductive layer into at least two electrically conductive segments.

6. The biopsy ablation device of claim 2, wherein the biopsy ablation device is configured to be inserted into a patient's body through a cannula. the ablation handle portion comprises a handle main body and a detachable head, the handle main body comprises a front end handle and a rear end handle, the handle main body is connected with the detachable head, the front end handle and the rear end handle are detachably connected, and an electrically conductive member is arranged in the handle main body, the electric field ablation needle is inserted into the electrically conductive member and is electrically connected with the electrically conductive member.

7. The biopsy ablation device of any one of claims 1 to 6, wherein, a first adjusting thread is arranged on the outer wall of the sleeve head, and a second adjusting thread is arranged on the inner wall of the sleeve fixing block, and the first adjusting thread is matched with the second adjusting thread; or a plurality of clamping notches are arranged on the outer wall of the sleeve head in the longitudinal direction, and a clamping convex portion is arranged on the inner wall of the sleeve fixing block, and the clamping convex portion is matched with the clamping notches.

8. The biopsy ablation device of claim 3, wherein, at least two protruding buckle positions are arranged on the sleeve head, and the first connecting portion is the protruding buckle position; at least two clamping notches are arranged on the biopsy handle portion, and the third connecting portion is the clamping notch, and the protruding buckle position is matched with the clamping notch; and / or at least two protruding buckle positions are arranged on the sleeve head, and the first connecting portion is the protruding buckle position; at least two clamping notches are arranged on the ablation handle portion, and the second connecting portion is the clamping notch, and the protruding buckle position is matched with the clamping notch.

9. The biopsy ablation device of any one of claims 1 to 6, wherein, the front end head of the sampling needle is provided with a first sharp end, and an extraction recess is arranged on the sampling needle and located at the rear side of the front end head, and the first sleeve is matched with the sampling needle in a sliding manner, and the first sleeve is capable of closing or opening the extraction recess. ​

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