Probe assembly and electrode device and methods of use thereof

Abstract

The application provides a probe assembly and an electrode device and a use method thereof. The probe assembly comprises probes arranged in an array. The polarity of each probe in the same row or the same column is the same, and the polarity of the probes in any two adjacent rows or any two adjacent columns is opposite. The probe comprises a needle core, a shell and an elastic member. The elastic member and at least part of the needle core are arranged in the shell. One end of the elastic member is connected with the shell, and the other end of the elastic member is connected with a first end of the needle core in the shell. A second end of the needle core outside the shell abuts against or contacts a target tissue. The application sets the elastic member, so that the needle core can move along the axial direction of the shell, so that the length of the second end of the needle core extending out of the shell can be variable, thereby adapting the second end to the uneven surface of the target tissue.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular, the present application relates to a probe assembly and electrode device and a method for using the same. BACKGROUND

[0002] Nano-knife, also known as irreversible electroporation technology, its principle is to use the modulated nanosecond pulse electric field, which can release a very high energy in an instant, break the tumor cell membrane, form nanoscale irreversible electroporation, and cause tumor cell apoptosis. Because the pulse duration is short, this energy will not cause significant temperature changes, thereby protecting important heat-sensitive tissues such as nerves and blood vessels.

[0003] Nano-knife technology has been widely used in liver tumors, gallbladder tumors, pancreatic tumors, and ureteral tumors, but it has been rarely used in skin tumors. Currently, the mainstream treatment for skin tumors mostly chooses traditional surgical resection, laser + photodynamic therapy, drug therapy, and radiotherapy. Therefore, it can be considered to apply nano-knife to skin tumors. SUMMARY

[0004] The present application aims at the shortcomings of the prior art, and provides a probe assembly and electrode device and a method for using the same, to solve the technical problem that the existing probe assembly cannot be in contact or abutment with the target tissue at the same time.

[0005] In a first aspect, the embodiments of the present application provide a probe assembly, comprising at least two probes, each of the probes is arranged in parallel;

[0006] The probe comprises a needle core, a shell, and an elastic member, the elastic member and at least part of the needle core are arranged in the shell, one end of the elastic member is connected with the shell, and the other end of the elastic member is connected with the first end of the needle core in the shell; the second end of the needle core outside the shell is used for abutting or contacting with the target tissue;

[0007] The second end of each needle core can simultaneously conform to the abutment or contact with the target tissue.

[0008] Optionally, the probes are arranged in an array, the polarity of each probe in the same row or the same column is the same, and the polarity of the probes in any two adjacent rows or any two adjacent columns is opposite.

[0009] Optionally, the probe assembly comprises at least one of the following:

[0010] The elastic member comprises a spring;

[0011] The needle core is provided with a clamping section between the first end and the second end, the diameter of the clamping section is smaller than the diameter of the first end and the diameter of the second end; the shell comprises a limiting part which is clamped on the periphery of the clamping section.

[0012] In the axial plane of the needle core, the shell is in a U shape, and the end connected with the elastic member is a closed end.

[0013] Optionally, the probe assembly further comprises a first fixing member, the first fixing member comprises an array of mounting holes, and the mounting holes correspond to the probes one by one.

[0014] Optionally, the array of probes comprises three rows of probes; the three rows of probes comprise a first row of probes, a second row of probes and a third row of probes.

[0015] The first fixing member further comprises two opposite sides, a first groove provided on one side and a second groove provided on the other side; the first row of probes is at least partially exposed to the first groove and is electrically connected by a first connecting member, and the third row of probes is at least partially exposed to the second groove and is electrically connected by a second connecting member. Optionally, the first fixing member further comprises a connecting surface connecting the two sides, and the connecting surface is provided with a third groove.

[0016] One end of the first connecting member and the second connecting member is exposed to the third groove, and the first connecting member and the second connecting member are electrically connected by a third connecting member provided in the third groove.

[0017] Optionally, the first fixing member comprises a first through slot provided in the axial direction of the first fixing member, and the first through slot communicates with each mounting hole for mounting the second row of probes.

[0018] The probe assembly further comprises a second fixing member, the second row of probes is provided at the top end of the second fixing member and is electrically connected by a fourth connecting member, and the second fixing member is provided in the first through slot.

[0019] Optionally, along the axial direction of the second fixing member, the second fixing member is provided with a second through slot, and the second through slot communicates with the first through slot; the first groove, the second groove or the third groove extends to the bottom of the first fixing member along the axial direction of the first fixing member.

[0020] One polarity cable in the bipolar cable is electrically connected with the first connecting member through the first groove, electrically connected with the second connecting member through the second groove, or electrically connected with the third connecting member through the third groove; the other polarity cable in the bipolar cable is electrically connected with the fourth connecting member through the second through slot.

[0021] In a second aspect, the embodiments of the present application provide an electrode device, comprising: a cover, a bipolar cable and the probe assembly as described in the first aspect, the cover comprising a mounting hole, the probe assembly being connected with the cover through the mounting hole; and the bipolar cable being electrically connected with the probes of the probe assembly through the mounting hole.

[0022] Optionally, the electrode device further comprises a cable fixing member, a handle shell and a bipolar plug; an end of the handle shell is connected with a bottom of the cover, and a bottom of the handle shell is connected with the cable fixing member.

[0023] One end of the bipolar cable is arranged in the interior of the cable fixing member and the interior of the handle shell; and the other end of the bipolar cable is electrically connected with the bipolar plug.

[0024] In a third aspect, the embodiments of the present application provide a use method of the electrode device based on the second aspect, comprising:

[0025] The second end of the needle core of each probe of the probe assembly of the electrode device is controlled to be close to the target tissue until the second end of the needle core of each probe can be conformally abutted or contacted with the target tissue at the same time.

[0026] The technical scheme provided by the embodiments of the present application has the following beneficial technical effects:

[0027] By arranging the elastic member, the needle core can move along the axial direction of the shell, so that the length of the second end of the needle core extending out of the shell can be variable, thereby adapting the second end to the uneven surface of the target tissue, and further enabling the second end to always abut or contact with the surface of the target tissue. Since the second end always abuts or contacts with the surface of the target tissue, the energy released through the second end can directly act on the target tissue, thereby avoiding the case that the second end releases energy into the air without contacting the target tissue, which damages the non-target tissue. In addition, the second end of the present application always abuts or contacts with the surface of the target tissue, without the need for additional gel, and can directly act on the target tissue, which is beneficial to improve the energy utilization rate and the ablation effect on the target tissue.

[0028] Moreover, the polarity of each probe in the same row or the same column is the same, and the polarity of the probes in any adjacent two rows or any adjacent two columns is opposite, which can enable the array-arranged probes to form an electrode loop, thereby determining the ablation area of the target tissue, and further enabling the probe assembly to be selected according to the size of the target tissue, so as to precisely ablate the target tissue and further avoid damaging the non-target tissue.

[0029] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the attached drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0031] Figure 1 A structural schematic view of a probe assembly provided by an embodiment of the present application;

[0032] Figure 2 A structural schematic view of a probe provided by an embodiment of the present application;

[0033] Figure 3 A structural schematic view of a probe provided by an embodiment of the present application; Figure 2 An enlarged view of A in FIG. 1;

[0034] Figure 4a A structural schematic view of an ablation area provided by an embodiment of the present application;

[0035] Figure 4b A structural schematic view of an ablation area provided by an embodiment of the present application;

[0036] Figure 5 A structural schematic view of a second end of a needle core and a target tissue provided by an embodiment of the present application;

[0037] Figure 6 A structural schematic view of a first fixing member provided by an embodiment of the present application;

[0038] Figure 7 A structural schematic view of a second fixing member provided by an embodiment of the present application;

[0039] Figure 8 A structural schematic view of a first fixing member and a second fixing member provided by an embodiment of the present application;

[0040] Figure 9 A structural schematic view of an electrode device provided by an embodiment of the present application;

[0041] Figure 10 A structural schematic view of a probe assembly and a cover provided by an embodiment of the present application;

[0042] Figure 11 A structural schematic view of a probe assembly and a cover provided by an embodiment of the present application; Figure 10 A sectional view of BB in FIG. 1.

[0043] BRIEF DESCRIPTION OF DRAWINGS

[0044] 1 - probe assembly;

[0045] 11-probe; 111-needle core; 1111-first end; 1112-second end; 1113-clamping section; 1113a-first clamping end; 1113b-second clamping end; 112-housing; 1121-limiting part; 113-elastic member;

[0046] 12-first fixing member; 121-first groove; 122-second groove; 123-first through groove; 124-third groove;

[0047] 13-second fixing member; 131-second through groove;

[0048] 14-first connecting member;

[0049] 15-second connecting member;

[0050] 16-third connecting member;

[0051] 17-fourth connecting member;

[0052] 2-electrode device; 21-protective shell; 22-cover; 23-handle housing; 24-bipolar electric cable; 25-bipolar plug; 26-cable fixing member;

[0053] 3-target tissue. DETAILED DESCRIPTION

[0054] The embodiments of the present application will be described below in conjunction with the accompanying drawings. It should be understood that the embodiments described below in conjunction with the accompanying drawings are exemplary descriptions of the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0055] It can be understood by those skilled in the art that, unless specifically stated, the singular forms "a", "an" and "the" used herein include plural forms. It should be further understood that the use of the term "comprise" in the specification of the present application means that the stated features, integers, steps, operations, elements and / or components exist, but does not exclude the presence of other features, information, data, steps, operations, elements, components and / or combinations thereof that are supported by the present technology. The term "and / or" used herein refers to at least one of the terms defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0056] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below in conjunction with the accompanying drawings.

[0057] The research and development idea of the present application includes that the surface of the target tissue is uneven, part of the probe assembly in the prior art cannot contact the target tissue, the energy released in the air, thereby easily damaging the non-target tissue, and increasing the wound area of the patient.

[0058] The technical solutions of the present application and how the technical solutions solve the above technical problems will be described in detail below with specific examples. It should be pointed out that the following embodiments can be mutually referenced, borrowed or combined. For the same terms, similar features and similar implementation steps in different embodiments, they will not be described repeatedly.

[0059] The present application provides a probe assembly 1, a structural schematic diagram of the probe assembly 1 is shown in Figures 1 to 8 ,

[0060] Referring to Figures 2 to 5 , the probe 11 includes a needle core 111, a shell 112 and an elastic member 113, the elastic member 113 and at least part of the needle core 111 are arranged in the shell 112, one end of the elastic member 113 is connected with the shell 112, the other end of the elastic member 113 is connected with a first end 1111 of the needle core 111 in the shell 112; a second end 1112 of the needle core 111 outside the shell 112 abuts or contacts the target tissue 3. The second end 1112 of each needle core 111 can simultaneously conformably abut or contact the target tissue 3.

[0061] In the embodiment, by arranging the elastic member 113, the needle core 111 can move along the axial direction of the shell 112, so that the length of the second end 1112 of the needle core 111 extending out of the shell 112 can be variable, thereby making the second end 1112 adapt to the uneven surface of the target tissue 3, and further enabling the second end 1112 of the needle core 111 to always abut or contact the surface of the target tissue 3. Since the second end 1112 of the needle core 111 always abuts or contacts the surface of the target tissue 3, the energy released through the second end 1112 can directly act on the target tissue 3, thereby avoiding the case that the second end 1112 releases energy into the air without contacting the target tissue 3, thereby damaging the non-target tissue 3. And the second end 1112 of the present application always abuts or contacts the surface of the target tissue 3, without the need for additional colloid, and can directly act on the target tissue 3, which is beneficial to improve the energy utilization rate and the ablation effect on the target tissue 3.

[0062] Optionally, the probe assembly 1 includes arrayed probes 11. The polarity of each probe 11 in the same row or the same column is the same, and the polarity of the probes 11 in any two adjacent rows or any two adjacent columns is opposite.

[0063] In the embodiment, the polarities of the probes 11 in the same row or the same column are the same, and the polarities of the probes 11 in any two adjacent rows or any two adjacent columns are opposite, so that the array-arranged probes 11 form an electrode loop, thereby determining the ablation area of the target tissue 3, and further selecting the probe assembly 1 according to the size of the target tissue 3, so as to precisely ablate the target tissue 3 and further avoid damaging the non-target tissue 3.

[0064] It should be noted that the target tissue 3 includes cancer cells. The polarities of the probes 11 in the same row or the same column are the same, and the polarities of the probes 11 in any two adjacent rows or any two adjacent columns are opposite. That is, the polarities of the probes 11 in the same row or the same column can be positive or negative, and the polarities of the probes 11 in any two adjacent rows or any two adjacent columns can be negative or positive.

[0065] It can be understood that the arrangement mode of the probes 1 can also be circular arrangement or elliptical arrangement, and the specific arrangement mode can be set according to actual needs.

[0066] Optionally, the second end 1112 of the needle core 111 is configured to abut against the target tissue 3, so that the needle core 111 approaches the connection between the elastic member 113 and the shell 112 in the axial direction of the shell 112.

[0067] In the embodiment, the needle core 111 approaches the connection between the elastic member 113 and the shell 112 in the axial direction of the shell 112, and the axial shape of the shell 112 can control the motion trajectory of the needle core 111, which is beneficial to control the motion trajectory of the needle core 111 and the position where the second end 1112 of the needle core 111 is placed, thereby improving the ablation precision of the target tissue 3.

[0068] Optionally, the area enclosed by the probes 11 is the ablation area of the target tissue.

[0069] In the embodiment, the area enclosed by the array-arranged probes 11 is the ablation area of the target tissue 3, so that the probe assembly 1 can be selected according to the required ablation area, thereby facilitating precise ablation.

[0070] Optionally, the row distance and the column distance are not less than 3 mm and not more than 20 mm.

[0071] In the embodiment, the row distance and the column distance are within the above range, which can not only ensure that the probe assembly 1 adapts to the area of the target tissue 3, but also ensure that the probe assembly 1 is not too large to damage the non-target tissue 3. For example, as shown in FIG. 4, the row distance and the column distance are the same.

[0072] Optionally, the product of the row distance of the arrayed probes 11 in the row direction and the column distance of the arrayed probes 11 in the column direction is the ablation area of the target tissue 3.

[0073] Exemplarily, Figure 4a The polarity of each probe in the first column and the third column is positive, and the polarity of each probe in the second column is negative. Figure 4b The polarity of each probe in the first column and the third column is negative, and the polarity of each probe in the second column is positive. Figure 4a And Figure 4b L1 represents the row distance, and L2 represents the column distance. The product of L1 and L2 is the ablation area.

[0074] Optionally, the elastic member 113 comprises a spring.

[0075] In the embodiment, the elastic member 113 can be a spring, which has a low cost.

[0076] In use, the applicant finds that the needle core 111 can fall out of the shell 112 due to loose connection with the elastic member 113, thereby damaging the non-target tissue 3. To solve the above problem, with reference to Figure 2 And Figure 3 The first end 1111 and the second end 1112 of the needle core 111 are provided with a clamping section 1113 therebetween. In the radial direction of the needle core 111, the diameter of the clamping section 1113 is smaller than the diameter of the first end 1111 and the diameter of the second end 1112. The shell 112 comprises a limiting portion 1121 clamped on the periphery of the clamping section 1113.

[0077] Specifically, the clamping section 1113 comprises a first clamping end 1113a arranged close to the first end 1111 and a second clamping end 1113b arranged close to the second end 1112. The limiting portion 1121 is arranged between the first clamping end 1113a and the second clamping end 1113b.

[0078] In the embodiment, the limiting portion 1121 of the shell 112 is arranged between the first clamping end 1113a and the second clamping end 1113b. Since the diameter of the first end 1111 and the diameter of the second end 1112 are both greater than the diameter of the clamping section 1113, when the elastic member 113 pushes the needle core 111 to move in the direction from the first end 1111 to the second end 1112, until the second clamping end 1113b abuts against the limiting portion 1121, the limiting portion 1121 of the shell 112 can limit the moving position of the needle core 111 out of the shell 112, so as to avoid the needle core 111 from falling out of the shell 112 and damaging the non-target tissue 3, and facilitate to improve the safety factor of the probe assembly 1. When the needle core 111 pushes the elastic member 113 to move in the direction from the second end 1112 to the first end 1111, until the first clamping end 1113a abuts against the limiting portion 1121, the limiting portion 1121 of the shell 112 can limit the moving position of the needle core 111 into the shell 112, so as to avoid the elastic member 113 from being excessively compressed and damaging the elastic member 113, and facilitate to prolong the service life of the elastic member 113, and further to ensure the use performance of the probe assembly 1.

[0079] Optionally, referring to Figure 2 In the axial plane of the needle core 111, the shell 112 is in a U shape, and the end of the shell 112 connected with the elastic member 113 is a closed end.

[0080] In the embodiment, when the needle core 111 abuts against the target tissue 3, the needle core 111 compresses the elastic member 113, so that the elastic member 113 is compressed in the direction of the connection between the shell 112 and the elastic member 113. Since the end of the shell 112 connected with the elastic member 113 is a closed end, i.e., one end of the shell 112 is closed, when the elastic member 113 is compressed in the direction of the connection between the shell 112 and the elastic member 113, the closed end can block the elastic member 113 from rushing out of the shell 112, and facilitate to ensure the normal work of the probe assembly 1.

[0081] Optionally, referring to Figure 1 The probe assembly 1 further comprises a first fixing member 12, and the first fixing member 12 comprises arrayed mounting holes, which are in one-to-one correspondence with the probes 11.

[0082] In the embodiment, the arrayed probes 11 are arranged in the mounting holes of the first fixing member 12, and the first fixing member 12 can support and fix the probes 11.

[0083] Optionally, the arrayed probes 11 comprise three rows of probes; the three rows of probes comprise first row probes, second row probes and third row probes.

[0084] Optionally, the first row probes, the second row probes and the third row probes are arranged in a staggered manner. Figure 1 、 Figure 6 and Figure 8The first fixing member 12 further comprises two opposite side surfaces, a first recess 121 arranged on one side surface, and a second recess 122 arranged on the other side surface; the first row of probes are at least partially exposed to the first recess 121 and are electrically connected by the first connecting member 14, and the third row of probes are at least partially exposed to the second recess 122 and are electrically connected by the second connecting member 15.

[0085] Optionally, the first fixing member 12 further comprises a connecting surface connecting the two side surfaces, and the connecting surface is provided with a third recess 124. One end of the first connecting member 14 and one end of the second connecting member 15 are exposed to the third recess 124, and the first connecting member 14 and the second connecting member 15 are electrically connected by a third connecting member 16 arranged in the third recess 124.

[0086] In the embodiment, the three rows of probes comprise the first row of probes, the second row of probes, and the third row of probes, the polarity of the first row of probes is the same as that of the third row of probes, and the polarity of the second row of probes is opposite to that of the first row of probes and that of the third row of probes.

[0087] The first row of probes are electrically connected by the first connecting member 14, so that the polarity of the first row of probes is the same; the third row of probes are electrically connected by the second connecting member 15, so that the polarity of the third row of probes is the same. The first connecting member 14 and the second connecting member 15 are electrically connected by the third connecting member 16, so that the polarity of the first row of probes is the same as that of the third row of probes, for example, both can be positive or negative.

[0088] Specifically, the first connecting member 14 is arranged in the first recess 121, and the second connecting member 15 is arranged in the second recess 122. The first connecting member 14 and the second connecting member 15 can both be brass terminals. The first row of probes are connected to the brass terminals by soldering, and the third row of probes are connected to the brass terminals by soldering. The third connecting member 16 can be a brass connecting piece, and the two brass terminals (referring to the first connecting member 14 and the second connecting member 15) are soldered by the brass connecting piece, so that the first row of probes and the third row of probes have the same polarity.

[0089] Optionally, the first fixing member 12 further comprises a first through groove 123 arranged along the axial direction of the first fixing member 12, and the first through groove 123 is in communication with the mounting holes for mounting the second row of probes.

[0090] Reference Figure 6 and Figure 7 The probe assembly 1 further comprises a second fixing member 13, and the second row of probes are arranged at the top end of the second fixing member 13 and are electrically connected by a fourth connecting member 17; the second fixing member 13 is arranged in the first through groove 123.

[0091] In the embodiment, the polarity of the probes in the second row is opposite to that of the probes in the first and third rows. The first through slot 123 is arranged on the first fixing member 12, so that the probes in the second row pass through the first through slot 123 and are connected with the mounting holes for mounting the probes in the second row. Thus, the probes in the second row can be independently mounted.

[0092] The probes in the second row are electrically connected, so that the polarity of the probes in the second row is the same. The probes in the second row are arranged at the top end of the second fixing member 13. During the movement of the second fixing member 13 into the first through slot 123, the second fixing member 13 drives the probes in the second row to pass through the first through slot 123 and are connected with the mounting holes for mounting the probes in the second row.

[0093] It should be noted that the second connecting member 15 can be a brass terminal, which is connected with the probes in the second row by soldering.

[0094] Alternatively, referring to Figures 6 to 8 , along the axial direction of the second fixing member 13, the second fixing member 13 comprises a second through slot 131, which is in communication with the first through slot 123. The first, second or third recess 121, 122 or 124 extends to the bottom of the first fixing member 12 along the axial direction of the first fixing member 12.

[0095] One of the polarity cables in the bipolar cable 24 is welded with the first connecting member 14 through the first recess 121, is welded with the second connecting member 15 through the second recess 122, or is electrically connected with the third connecting member 16 through the third recess 124; the other of the polarity cables in the bipolar cable 24 is electrically connected with the fourth connecting member 17 through the second through slot 131.

[0096] In the embodiment, one of the polarity cables in the bipolar cable 24 is welded with the first connecting member 14 through the first recess 121, or is welded with the second connecting member 15 through the second recess 122, so that the probes in the first and third rows are connected with one of the polarity cables, which can ensure that the polarity of the probes in the first and third rows is the same. The other of the polarity cables in the bipolar cable 24 is welded with the fourth connecting member 17 through the second through slot 131, so that the polarity of the probes in the second row is the same.

[0097] Moreover, the first, second or third recess 121, 122 or 124 extends to the bottom of the first fixing member 12 along the axial direction of the first fixing member 12. One of the polarity cables in the bipolar cable 24 can be arranged in the first, second or third recess 121, 122 or 124, and the other of the polarity cables can be arranged in the second through slot 131, which can avoid occupying space by arranging the bipolar cable 24 outside the probe assembly 1, and is beneficial to saving space.

[0098] Exemplarily, as shown inFigure 8 As shown, the first groove 121 extends along the axial direction of the first fixing member 12 to the bottom of the first fixing member 12, and the second groove 122 and the third groove 124 are both U-shaped.

[0099] The first connecting member 14 is configured to make the polarities of the probes in the first row same, the second connecting member 15 is configured to make the polarities of the probes in the third row same, and the third connecting member 16 is configured to make the polarities of the probes in the first row and the third row same. Thus, by configuring the first connecting member 14, the second connecting member 15 and the third connecting member 16, the polarities of the probes in the first row and the third row can be made same, which can be beneficial to save more wires and save more space.

[0100] By electrically connecting one polarity cable with the first connecting member 14, or electrically connecting one polarity cable with the second connecting member 15, or electrically connecting one polarity cable with the third connecting member 16, the polarities of the probes in the first row and the third row can be made same, which can be further beneficial to save space and reduce the volume of the electrode device 2. Exemplarily, the mounting method of the three rows of probes of the present application is as follows:

[0101] The probes in the first row are passed through the mounting hole from the first groove 121, so that at least part of the probes in the first row is exposed to the first fixing member 12, and the probes in the first row exposed to the first groove 121 are electrically connected by the first connecting member 14.

[0102] The probes in the second row are mounted at the top end of the second fixing member 13 and electrically connected by the fourth connecting member 17, and the second fixing member 13 passes through the first through slot 123 of the first fixing member 12, so that the probes in the second row pass through the mounting hole and at least part of the probes in the second row is exposed to the first fixing member 12.

[0103] The probes in the third row are passed through the mounting hole from the second groove 122, so that at least part of the probes in the third row is exposed to the first fixing member 12, and the probes in the third row exposed to the second groove 122 are electrically connected by the second connecting member 15.

[0104] The first connecting member 14 and the second connecting member 15 are connected by the third connecting member 16, so that the polarities of the probes in the first row and the third row are same.

[0105] The first connecting member 14, the second connecting member 15 and the third connecting member 16 are all fixed by photosensitive glue.

[0106] Based on the same inventive concept, the present application provides an electrode device 2, and a structure diagram of the electrode device 2 is as follows: Figures 9 to 11As shown, the electrode device 2 includes: a cover 22, a bipolar cable 24, and a probe assembly 1 provided in the above embodiment.

[0107] The cover 22 includes a mounting hole, through which the probe assembly 1 is connected to the cover 22; the bipolar cable 24 is electrically connected to the probe 11 of the probe assembly 1 through the mounting hole.

[0108] In this embodiment, by providing a cover 22 to protect the probe assembly 1, the service life of the probe assembly 1 can be improved. The second end 1112 of the needle core 111 of the probe assembly 1 of the electrode device 2 is always in contact with the surface of the target tissue 3. The energy released through the second end 1112 can directly act on the target tissue 3, thereby avoiding damage to non-target tissue 3 caused by the second end 1112 releasing energy into the air when not in contact with the target tissue 3. Furthermore, since the second end 1112 of the needle core 111 of the probe assembly 11 is always in contact with the surface of the target tissue 3, no additional colloid is needed, allowing direct action on the target tissue 3, which is beneficial for improving energy utilization and the ablation effect on the target tissue 3.

[0109] Optionally, the diameter of the mounting hole is smaller than the diameter of the first fixing member 12 of the probe assembly 1 along the radial direction. In this embodiment, the first fixing member 12 of the probe assembly 1 is disposed in the mounting hole and is interference-fitted with the mounting hole, thereby restricting the movement of the first fixing member 12.

[0110] Optionally, at least a portion of the first fixing member 12 is exposed outside the cover 22, so that the second end 1112 of the probe 11 is exposed outside the cover 22, which facilitates the second end 1112 abutting or contacting the target tissue 3.

[0111] Optionally, such as Figure 9 As shown, the electrode device 2 also includes a cable fixing member 26, a handle housing 23 and a bipolar plug 25; the end of the handle housing 23 is connected to the bottom of the cover 22, and the bottom of the handle housing 23 is connected to the cable fixing member 26.

[0112] One end of the bipolar cable 24 passes through the inside of the cable fixing member 26 and the inside of the handle housing 23; the other end of the bipolar cable 24 is electrically connected to the bipolar plug 25.

[0113] In this embodiment, the bipolar plug 25 is electrically connected to the power supply, and the bipolar cable 24 passes through the interior of the cable fixing member 26 and the interior of the handle housing 23, and then through the mounting hole of the cover 22 to be electrically connected to the probe 11 of the probe assembly 1. The cable fixing member 26 can fix the cable.

[0114] Optionally, the electrode device 2 may also include a protective shell 21 disposed on the outer periphery of the cover 22.

[0115] Based on the same inventive concept, the application provides a use method of the electrode device provided in the above embodiments, comprising:

[0116] The second end 1112 of the needle core 111 of each probe 11 of the probe assembly 1 of the electrode device 2 can conformingly abut or contact the target tissue 3.

[0117] In this embodiment, during the treatment, the second end 1112 of each needle core 111 can always abut or contact the surface of the target tissue 3, thereby avoiding the case that the second end 1112 releases energy into the air without contacting the target tissue 3, thereby damaging the non-target tissue 3.

[0118] By using the embodiments of the application, the following beneficial effects can be achieved:

[0119] 1. The embodiments of the application set the elastic member, so that the needle core can move along the axial direction of the shell, so that the length of the second end of the needle core extending out of the shell can be variable, thereby adapting the second end to the uneven surface of the target tissue, and further enabling the second end of the needle core to always abut or contact the surface of the target tissue. Since the second end of the needle core always abuts or contacts the surface of the target tissue, the energy released through the second end can directly act on the target tissue, thereby avoiding the case that the second end releases energy into the air without contacting the target tissue, thereby damaging the non-target tissue. In addition, the second end of the application always abuts or contacts the surface of the target tissue, does not need to be additionally provided with a colloid, can directly act on the target tissue, and is beneficial to improve the energy utilization rate and the ablation effect on the target tissue.

[0120] 2. The polarity of each probe in the same row or the same column of the embodiments of the application is the same, and the polarity of the probes in any adjacent two rows or any adjacent two columns is opposite, which can enable the array-arranged probes to form an electrode loop, thereby being able to determine the ablation area of the target tissue, and further being able to select the probe assembly according to the size of the target tissue, thereby being able to precisely ablate the target tissue, and further avoiding damaging the non-target tissue.

[0121] Those skilled in the art can understand that the steps, measures and schemes in the various operations, methods and processes discussed in the application can be alternated, changed, combined or deleted. Further, other steps, measures and schemes in the various operations, methods and processes discussed in the application can also be alternated, changed, rearranged, decomposed, combined or deleted. Further, the steps, measures and schemes in the various operations, methods and processes in the prior art can also be alternated, changed, rearranged, decomposed, combined or deleted.

[0122] In the description of the present application, the directions or positional relationships indicated by the words "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the exemplary directions or positional relationships shown in the drawings, and are used for the purpose of facilitating the description or simplifying the description of the embodiments of the present application, and do not indicate or imply that the devices or components indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0123] The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or a specific number of the technical features indicated thereby. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0124] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0125] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0126] It should be understood that, although the steps in the flowchart of the drawings are shown in sequence according to the direction of the arrow, the implementation order of the steps is not limited to the order indicated by the arrow. Unless otherwise specified herein, the steps in some implementation scenarios of the embodiments of the present application can be executed in other order as required. Moreover, part or all of the steps in each flowchart can include multiple sub-steps or multiple stages based on the actual implementation scenario. Part or all of these sub-steps or stages can be executed at the same time or at different times. In the scenario where the execution time is different, the execution order of these sub-steps or stages can be flexibly configured according to the requirements, and the embodiments of the present application do not limit this.

[0127] The above only describes some embodiments of the present application. It should be noted that, for those skilled in the art, other similar implementation means based on the technical concept of the present application can be adopted without departing from the technical concept of the present application, which also belongs to the protection scope of the embodiments of the present application.

Claims

1. A probe assembly, characterized in that, It includes at least two probes, each of which is arranged in parallel. The probe includes a needle core, a housing, and an elastic element. The elastic element and at least a portion of the needle core are disposed within the housing. One end of the elastic element is connected to the housing, and the other end of the elastic element is connected to the first end of the needle core located within the housing. The second end of the needle core located outside the housing is used to abut or contact the target tissue. The second end of each needle core can simultaneously conformally abut or contact the target tissue; The elastic element includes a spring; A snap-fit ​​section is provided between the first end and the second end of the needle core, and the diameter of the snap-fit ​​section is smaller than the diameter of the first end and the diameter of the second end; the housing includes a limiting part, which snaps onto the periphery of the snap-fit ​​section. Within the axial plane of the needle core, the housing is U-shaped, and the end of the housing connected to the elastic element is a closed end.

2. The probe assembly according to claim 1, characterized in that, The probes are arranged in an array, with probes in the same row or column having the same polarity, and probes in any two adjacent rows or columns having opposite polarities.

3. The probe assembly according to claim 2, characterized in that, It also includes a first fixing member, which includes an array of mounting holes, each corresponding to one of the probes.

4. The probe assembly according to claim 3, characterized in that, The array of probes includes probes in the first row, probes in the second row, and probes in the third row. The first fixing member further includes two oppositely arranged sides, a first groove provided on one side and a second groove provided on the other side; each probe in the first row is at least partially exposed in the first groove and electrically connected by a first connector, and each probe in the third row is at least partially exposed in the second groove and electrically connected by a second connector.

5. The probe assembly according to claim 4, characterized in that, The first fastener also includes a connecting surface that connects the two sides, and the connecting surface is provided with a third groove; One end of both the first connector and the second connector is exposed in the third groove, and the first connector and the second connector are electrically connected through the third connector disposed in the third groove.

6. The probe assembly according to claim 5, characterized in that, The first fixing member includes a first through groove disposed along the axial direction of the first fixing member, and the first through groove communicates with each mounting hole for mounting each probe of the second row; The probe assembly further includes a second fixing member, wherein each probe in the second row is disposed at the top end of the second fixing member and electrically connected through a fourth connector, and the second fixing member passes through the first through groove.

7. The probe assembly according to claim 6, characterized in that, Along the axial direction of the second fixing member, the second fixing member is provided with a second through groove, which communicates with the first through groove; the first groove, the second groove, or the third groove extends along the axial direction of the first fixing member to the bottom of the first fixing member; In the bipolar cable, one polarity cable is electrically connected to the first connector through the first groove, the second connector through the second groove, or the third connector through the third groove; the other polarity cable in the bipolar cable is electrically connected to the fourth connector through the second through groove.

8. An electrode device, characterized in that, The device includes a cover, a bipolar cable, and a probe assembly as described in any one of claims 1 to 7, wherein the cover includes a mounting hole, the probe assembly is connected to the cover through the mounting hole, and the bipolar cable is electrically connected to a probe of the probe assembly through the mounting hole.

9. The electrode device according to claim 8, characterized in that, It also includes a cable retainer, a handle housing, and a bipolar plug; the end of the handle housing is connected to the bottom of the cover, and the bottom of the handle housing is connected to the cable retainer; One end of the bipolar cable passes through the inside of the cable fixing member and the inside of the handle housing; the other end of the bipolar cable is electrically connected to the bipolar plug.

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