Electrode structure and ablation equipment

Abstract

The invention provides an electrode structure and ablation equipment. The electrode structure comprises a supporting rod, a flexible circuit board and a plurality of electrode contacts, the flexible circuit board is arranged on the surface of the supporting rod and comprises a plurality of first welding spots and a plurality of signal lines, the far ends of the signal lines are electrically connected with the first welding spots in a one-to-one correspondence mode, and the near ends of the signal lines are used for being electrically connected with an external device; the signal lines corresponding to the even-numbered group of first welding spots are located on the first sides of the first welding spots, and the signal lines corresponding to the odd-numbered group of first welding spots are located on the second sides of the first welding spots; each group of first welding spots comprises at least one first welding spot; and the plurality of electrode contacts are arranged at the far end of the supporting rod, are welded to the first welding spots in a one-to-one correspondence manner, and are used for acquiring biological information of the target biological tissue and / or applying an electric signal output by an external device to the target biological tissue so as to regulate and control the target biological tissue. Miniaturization of the electrode structure is facilitated, and tissue damage caused by the electrode structure in the using process can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of medical devices. Specifically, this application relates to an electrode structure and an ablation device. Background Art

[0002] Neuromodulation technology is a technology that stimulates nerve tissue through electrical or magnetic signals to change the electrical activity of nerve cells, thereby affecting human physiological functions. This technology has been widely applied in the medical field, such as deep brain stimulation (DBS) for treating diseases such as Parkinson's disease and epilepsy, and spinal cord stimulation (SCS) for treating chronic pain, etc.

[0003] In the related art, it is usually necessary to insert the electrode structure into the target biological tissue of the patient. However, the electrode structure in the related art has a large size, and it is easy to cause relatively large damage to the biological tissue during the insertion into the patient. Summary of the Invention

[0004] This application provides an electrode structure and an ablation device, which can solve the problem that the electrode structure in the existing technology is easy to cause relatively large damage to the biological tissue during the insertion into the patient.

[0005] In a first aspect, an embodiment of this application provides an electrode structure, including: A support rod; A flexible circuit board disposed on the surface of the support rod, including a plurality of first solder joints and a plurality of signal lines. The distal ends of the signal lines are electrically connected to the first solder joints in a one-to-one correspondence, and the proximal ends of the signal lines are used for electrical connection with an external device; the signal lines corresponding to the even-numbered groups of first solder joints are located on the first side of the first solder joints, and the signal lines corresponding to the odd-numbered groups of first solder joints are located on the second side of the first solder joints; each group of first solder joints includes at least one first solder joint; A plurality of electrode contacts disposed at the distal end of the support rod, and the electrode contacts are welded to the first solder joints in a one-to-one correspondence, for acquiring biological information of the target biological tissue, and / or applying an electrical signal output by the external device to the target biological tissue to regulate the target biological tissue.

[0006] Optionally, the signal lines corresponding to the first N first solder joints are located on the second side of the first solder joints, and the signal lines corresponding to the subsequent M first solder joints are located on the first side of the first solder joints; N is an integer greater than or equal to 2, and M is an integer greater than or equal to 2.

[0007] Optionally, the signal lines corresponding to the even-numbered first solder joints are located on the first side of the first solder joints, and the signal lines corresponding to the odd-numbered first solder joints are located on the second side of the first solder joints.

[0008] Optionally, a plurality of the first solder joints are arranged in a straight line along the extending direction of the support rod; The signal line includes a first connecting line segment pointing from the corresponding first solder joint to an adjacent first solder joint, a second connecting line segment extending by bending from the end of the first connecting line segment, and a third connecting line segment extending along the extending direction of the support rod from the end of the second connecting line segment.

[0009] Optionally, the support rod is in a hollow tubular shape, and the support rod includes a first region between adjacent electrode contacts, and the first region is a transparent structure; The support rod is used for allowing an optical fiber to extend therein and emitting light through the first region.

[0010] Optionally, the support rod is in a hollow tubular shape, and the support rod includes a first region between adjacent electrode contacts, and the support rod further includes a through hole located in the first region and penetrating through the tube wall of the support rod; The support rod is used for allowing an optical fiber to extend therein and extending out through the through hole.

[0011] Optionally, the electrode structure further includes a plugging assembly, which is flexible, and the outer peripheral wall is fixedly connected to the inner peripheral wall of the through hole, and is configured to deform to open the through hole when the optical fiber passes through and plug the through hole without external force.

[0012] Optionally, the same position of each electrode contact is welded to the corresponding first solder joint.

[0013] In a second aspect, an embodiment of the present application provides an ablation device, including the electrode structure as described above and an external device electrically connected to the signal line of the electrode structure.

[0014] Optionally, the support rod is in a hollow tubular shape, and the support rod includes a first region between adjacent electrode contacts; the first region is a transparent structure, or the first region is provided with a through hole penetrating through the tube wall of the support rod; The ablation device further includes a laser optical fiber and a temperature measurement optical fiber, both of which extend into the interior of the support rod; the ends of the laser optical fiber and the temperature measurement optical fiber are arranged in the same first region or in adjacent first regions.

[0015] Optionally, the flexible circuit board of the electrode structure further includes: a plurality of second solder joints, and the proximal ends of the signal lines of the flexible circuit board are electrically connected to the second solder joints in a one-to-one correspondence; The electrode structure further includes: a plurality of first connection contacts, which are welded to the second solder joints in a one-to-one correspondence; The ablation device further includes: a connector having a connection channel for receiving the proximal end of the support rod, and second connection contacts corresponding to and connected to the first connection contacts are provided on the inner wall of the connection channel; the connector further includes an electrical connection portion that is electrically connected to the plurality of second connection contacts and is used for electrical connection with the external device.

[0016] Optionally, the connector includes a fixed portion and a movable portion, the fixed portion is rotatably connected to the movable portion, and the electrical connection portion is located on the fixed portion; a first through groove is provided on the fixed portion, and a second through groove is correspondingly provided on the movable portion. When the opening and closing angle of the movable portion relative to the fixed portion is zero, the first through groove and the second through groove form the connection channel.

[0017] Optionally, the ablation device further includes: a connector including a detachable first plugging portion and a second plugging portion, the first plugging portion is provided with a row of pins, and the second plugging portion is provided with pin holes that cooperate with the row of pins; The first plugging portion has a connection channel for receiving the proximal end of the support rod, the row of pins is electrically connected to the proximal ends of the signal lines of the flexible circuit board of the electrode structure, and the pin holes are used for electrical connection with the external device. Alternatively, the second plugging portion has a connection channel for receiving the proximal end of the support rod, the pin holes are electrically connected to the proximal ends of the signal lines of the flexible circuit board of the electrode structure, and the row of pins is used for electrical connection with the external device.

[0018] The beneficial technical effects brought by the technical solution provided by the embodiments of the present application include: Since the signal lines corresponding to the even-numbered groups of first solder joints in the flexible circuit board are located on the first side of the first solder joint, and the signal lines corresponding to the odd-numbered groups of first solder joints are located on the second side of the first solder joint. That is to say, multiple signal lines are respectively distributed on opposite sides of the first solder joint. Compared with the wiring method in which all signal lines are distributed on the same side of the first solder joint, the method in which multiple signal lines are respectively distributed on opposite sides of the first solder joint in the embodiments of the present application can improve the problem that the signal lines in the bent part are longer due to ensuring the minimum line spacing, thereby reducing the surface area of the flexible circuit board in the electrode structure and reducing the installation area required for the flexible circuit board. Therefore, the flexible circuit board can be disposed on the surface of a thinner support rod, which is beneficial to the miniaturization of the electrode structure and reduces the tissue damage caused by the electrode structure during use.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, and these will become apparent from the following description, or can be understood through the practice of the present application. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where: Figure 1 FIG. is a partial cross-sectional view of an electrode structure and a connector connected according to an embodiment of the present application; Figure 2 FIG. is a top view of an electrode structure and a connector connected according to an embodiment of the present application; Figure 3 is Figure 1 a partial enlarged schematic view at A in Figure 4 FIG. is a schematic structural view of a flexible circuit board according to an embodiment of the present application; Figure 5 FIG. is a schematic structural view of another flexible circuit board according to an embodiment of the present application; Figure 6 FIG. is a schematic structural view of an ablation device according to an embodiment of the present application; Figure 7 FIG. is a schematic structural view of another ablation device according to an embodiment of the present application; Figure 8 FIG. is a schematic structural view of a connector in an ablation device according to an embodiment of the present application; Figure 9 FIG. is a schematic structural view of another connector in an ablation device according to an embodiment of the present application.

[0021] Explanation of reference numerals: 100 - electrode structure; 11 - support rod; 12 - flexible circuit board; 121 - first solder joint; 122 - signal line; 122a - first connection segment; 122b - second connection segment; 122c - third connection segment; 13 - electrode contact; 14 - first connection contact; 15 - second connection contact; 16 - protective layer; 200 - connector; 201 - fixing part; 2011 - first through groove; 202 - movable part; 2021 - second through groove; 203 - first insertion part; 204 - second insertion part; 205 - electrical connection part; 300 - optical fiber catheter. Detailed implementation manners

[0022] Embodiments of the present application will be described below with reference to the accompanying drawings in the present application. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application, and do not limit the technical solutions of the embodiments of the present application.

[0023] Those skilled in the art of the present technology can understand that, unless specifically stated, the "the" and "this" used here may also include the plural form. It should be further understood that the term "including" used in the specification of the present application means the presence of the described integers, elements, and / or components, but does not exclude the implementation of other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the art of the present technology. The term "and / or" used here means at least one of the items defined by the term. For example, "A and / or B" can be implemented as "A", or implemented as "B", or implemented as "A and B".

[0024] To make the objectives, technical solutions, and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0025] The inventors found that during neuromodulation, whether using an electrode structure to obtain biological information of a target biological tissue or using the electrode structure to apply a pulse signal generated by a pulse generator to the target biological tissue to modulate the target biological tissue, it is necessary to insert the electrode structure into the target biological tissue of the patient, which may cause tissue damage to the patient and even lead to infection in severe cases.

[0026] Therefore, how to miniaturize the electrode structure to reduce the tissue damage caused by the electrode structure during use has become an urgent problem to be solved.

[0027] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. It should be noted that the following embodiments can refer to, draw on, or combine with each other. For the same terms, similar features, and similar implementation steps in different embodiments, they will not be described repeatedly.

[0028] An electrode structure 100 is provided in an embodiment of the present application. Refer to Figures 1 to 3 , which includes: a support rod 11, a flexible circuit board 12, and a plurality of electrode contacts 13.

[0029] The flexible circuit board 12 is disposed on the surface of the support rod 11. The flexible circuit board 12 includes a plurality of first solder joints 121 and a plurality of signal lines 122 extending along the radial direction of the support rod 11. The distal ends of the signal lines 122 are electrically connected to the first solder joints 121 in one-to-one correspondence, and the proximal ends of the signal lines 122 are used for electrical connection with an external device; the signal lines 122 corresponding to the even-numbered groups of first solder joints 121 are located on the first side of the first solder joints 121, and the signal lines 122 corresponding to the odd-numbered groups of first solder joints 121 are located on the second side of the first solder joints 121; each group of first solder joints 121 includes at least one first solder joint 121.

[0030] A plurality of electrode contacts 13 are disposed at the distal end of the support rod 11, and the electrode contacts 13 are welded to the first solder joints 121 in one-to-one correspondence, for acquiring biological information of a target biological tissue and / or applying an electrical signal output by an external device to the target biological tissue to regulate the target biological tissue.

[0031] Wherein, the proximal end is the end close to the operator, and the distal end is the end far from the operator or close to the target biological tissue.

[0032] Since the signal lines 122 corresponding to the even-numbered groups of first solder joints 121 in the flexible circuit board 12 are located on the first side of the first solder joints 121, and the signal lines 122 corresponding to the odd-numbered groups of first solder joints 121 are located on the second side of the first solder joints 121, that is to say, the plurality of signal lines 122 are respectively distributed on the opposite sides of the first solder joints 121. Compared with the wiring method in which all the signal lines 122 are distributed on the same side of the first solder joints 121, the method in which the plurality of signal lines 122 are respectively distributed on the opposite sides of the first solder joints 121 in the embodiment of the present application can improve the problem that the signal lines 122 in the bent part are longer due to ensuring the minimum line spacing, thereby reducing the surface area of the flexible circuit board 12 in the electrode structure 100 and reducing the required installation area of the flexible circuit board 12. Therefore, the flexible circuit board 12 can be disposed on the surface of a thinner support rod 11, which is beneficial to the miniaturization of the electrode structure 100 and reduces the tissue damage caused by the electrode structure 100 during use.

[0033] In some embodiments, some of the electrode contacts 13 are used for acquiring biological information of a target biological tissue and transmitting it to an external device, and some of the electrode contacts 13 are used for applying an electrical signal output by the external device to the target biological tissue to regulate the target biological tissue.

[0034] In another feasible embodiment, the electrode contacts 13 are used for acquiring biological information of a target biological tissue and transmitting it to an external device under a first trigger condition, and applying an electrical signal output by the external device to the target biological tissue to regulate the target biological tissue under a second trigger condition.

[0035] For example, the electrode contact 13 is used to acquire the biological information of the target biological tissue within the first time period and transmit it to an external device, and apply the electrical signal output by the external device to the target biological tissue within the second time period to regulate the target biological tissue.

[0036] Optionally, the external device may include an electroencephalograph, which is used to receive and display the biological information of the target biological tissue acquired by the electrode contact 13.

[0037] The external device may also be a signal generator, which is configured to receive a first control signal from a controller, generate an electrical signal according to the first control signal, and transmit the electrical signal to the electrode contact 13; or, receive the biological information of the target biological tissue acquired by the electrode contact 13, generate an electrical signal according to the biological information of the target biological tissue, and transmit the electrical signal to the electrode contact 13. The electrode contact 13 applies the electrical signal to the target biological tissue to regulate the target biological tissue. Wherein, the electrical signal may be a stimulation pulse signal or a radiofrequency current.

[0038] In some embodiments, regulating the target biological tissue may include electrically stimulating or thermocoagulating the target biological tissue.

[0039] For example, electrical stimulation directly changes the membrane potential of neurons and triggers action potentials by inputting stimulation pulse signals, thereby exciting neurons. Usually, external devices such as electrical stimulators or deep brain stimulators (DBS) are used to generate and control the intensity, frequency, and duration of stimulation pulse signals. During use, the electrode structure 100 needs to be implanted into a specific neural structure or tissue, and then the stimulation pulse signal (such as current stimulation) is applied through the external device. The parameters of the stimulation pulse signal (such as current intensity, frequency, and duration) can be adjusted as needed. It is applicable to the treatment of various neurological diseases, such as epilepsy, Parkinson's disease, dystonia, etc. In addition, electrical stimulation can also be used to promote nerve regeneration and repair damaged tissues.

[0040] Thermocoagulation uses the high-frequency oscillating energy generated by radiofrequency current to generate heat by friction between the electrode structure 100 and ions in the tissue, increasing the local temperature, and then causing the tissue to coagulate and necrose. Mainly use external devices such as radiofrequency instruments or high-frequency electrosurgical units to generate radiofrequency current (high-frequency current) and conduct the current to the target biological tissue through the electrode structure 100. Usually, the high-frequency current is conducted to the target tissue through a skin-piercing electrode or a needle electrode. During the operation, the doctor will adjust the intensity and action time of the current according to the tissue resistance and temperature feedback. It is mainly used to treat painful diseases, such as trigeminal neuralgia, sciatica, etc. In addition, thermocoagulation can also be used for hemostasis, tissue cutting, and ablation in surgical operations.

[0041] Wherein, the electrode contact 13 may be annular or semi-annular around the support rod 11.

[0042] In some embodiments, the proximal end of the signal line 122 can be electrically connected to an external device via the connector 200.

[0043] See Figure 3 , in some embodiments, the electrode structure 100 may further include a protective layer 16 covering the surface of the flexible circuit board 12. Optionally, the protective layer 16 may include a waterproof adhesive layer.

[0044] See Figure 4 , optionally, in this embodiment, the signal lines 122 corresponding to the first N solder joints 121 are located on the second side of the first solder joints 121, and the signal lines 122 corresponding to the last M first solder joints 121 are located on the first side of the first solder joints 121; N is an integer greater than or equal to 2, and M is an integer greater than or equal to 2.

[0045] Wherein, the first side and the second side of the first solder joint 121 are the opposite sides along the circumferential direction of the support rod 11 respectively.

[0046] It should be noted that the direction from the distal end to the proximal end is defined as from front to back. The proximal end is the end close to the operator, and the distal end is the end close to the target biological tissue. That is to say, the first N solder joints 121 refer to the N first solder joints 121 close to the target biological tissue; the last M first solder joints 121 refer to the M first solder joints 121 close to the operator.

[0047] In other words, in this embodiment, the electrode structure 100 may include two groups of first solder joints 121. The first group of first solder joints 121 includes M first solder joints 121, and the second group of first solder joints 121 includes N first solder joints 121. The signal lines 122 corresponding to the first group of first solder joints 121 are located on the first side of the first solder joints 121, and the signal lines 122 corresponding to the second group of first solder joints 121 are located on the second side of the first solder joints 121.

[0048] See Figure 5 , optionally, in another feasible embodiment, the signal lines 122 corresponding to the even-numbered first solder joints 121 are located on the first side of the first solder joints 121, and the signal lines 122 corresponding to the odd-numbered first solder joints 121 are located on the second side of the first solder joints 121.

[0049] That is to say, the electrode structure 100 includes at least three groups of first solder joints 121, each group includes one first solder joint 121, and the signal lines 122 corresponding to the multiple first solder joints 121 are alternately arranged on the first side and the second side of the first solder joints 121.

[0050] It can be understood that the electrode structure 100 also includes at least three groups of first solder joints 121. Each group of first solder joints 121 can include two first solder joints 121, three first solder joints 121, four first solder joints 121, etc., which are not limited here.

[0051] Refer to Figure 4 and Figure 5 Optionally, in this embodiment, a plurality of first solder joints 121 are arranged in a straight line along the extending direction of the support rod 11; the signal line 122 includes a first connection segment 122a pointing from the corresponding first solder joint 121 to the adjacent first solder joint 121, a second connection segment 122b bent and extending from the end of the first connection segment 122a, and a third connection segment 122c extending along the extending direction of the support rod 11 from the end of the second connection segment 122b. With such an arrangement, the first solder joints 121 are neatly arranged and occupy a small space.

[0052] Specifically, the first connection segment 122a and the third connection segment 122c extend along the axial direction of the support rod 11. A preset angle is formed between the second connection segment 122b and the first connection segment 122a, and a preset angle is also formed between the second connection segment 122b and the third connection segment 122c. The range of the preset angle is 90 to 180 degrees (including 90 degrees, not including 180 degrees).

[0053] Refer to Figure 1 , Figure 2 Optionally, in this embodiment, the support rod 11 is in a hollow tubular shape. The support rod 11 includes a first region located between adjacent electrode contacts 13, and the first region is a transparent structure; the support rod 11 is used for the optical fiber to extend into and emit light through the first region.

[0054] Among them, the optical fiber can include a laser optical fiber and / or a temperature measurement optical fiber. The laser optical fiber is used to output laser to ablate the target tissue in the lesion area, and the temperature measurement optical fiber is used to measure the temperature of the target biological tissue.

[0055] With such an arrangement, light can extend into the target biological tissue through the electrode structure 100 to realize temperature measurement or ablation, etc. There is no need to additionally use other auxiliary devices to realize the extension of the optical fiber, which is convenient for operation and can reduce tissue trauma.

[0056] As an example, the material of the first region can include TPU (Thermoplastic Polyurethane), PC (Polycarbonate), silica gel, etc. Of course, the material of the first region can also be other transparent materials with excellent biocompatibility, which will not be elaborated here.

[0057] In some embodiments, the material of the support rod 11 can be the same everywhere. For example, the material of the support rod 11 can include TPU, PC, silicone, etc. Optionally, the support rod 11 can be an integral structure.

[0058] Optionally, in another feasible embodiment, the support rod 11 is a hollow tube. The support rod 11 includes a first region located between adjacent electrode contacts 13. The support rod 11 further includes a through hole located in the first region and penetrating the tube wall of the support rod 11. The support rod 11 is used for the optical fiber to extend in and extend out through the through hole. With such a setting, light can extend into the target biological tissue through the electrode structure 100 to achieve temperature measurement or ablation, etc., without the need to additionally rely on other auxiliary devices to realize the extension of the optical fiber, which is convenient for operation and can reduce tissue trauma.

[0059] Optionally, the electrode structure 100 further includes a plugging component (not shown in the figure). It is flexible, and its outer peripheral wall is fixedly connected to the inner peripheral wall of the through hole, and is configured to deform to open the through hole when the optical fiber passes through, and plug the through hole without external force.

[0060] Without external force, the plugging component can plug the through hole to prevent biological tissue from entering the inside of the support rod 11 through the through hole during the puncture operation, resulting in greater tissue damage. When the optical fiber passes through, the plugging component can deform under the extrusion of the optical fiber to open the through hole, so that the optical fiber can extend out through the through hole.

[0061] In some embodiments, the plugging component can be a multi-layer elastic member, and each layer of elastic member can include a plurality of elastic sheets surrounding the circumference of the through hole. The material of the elastic sheet can be silicone, etc.

[0062] Optionally, in some embodiments, the same position of each electrode contact 13 is welded to the corresponding first solder joint 121. With such a setting, the electrode contacts 13 are evenly distributed, and the first solder joints 121 are also evenly distributed. The structure is simple and convenient for manufacturing. At the same time, space is reserved for installing the optical fiber.

[0063] For example, the edge of each electrode contact 13 is welded to the first solder joint 121, or the middle position of each electrode contact 13 is welded to the first solder joint 121.

[0064] The beneficial technical effects brought by the technical solution provided by the embodiments of the present application include: Since the signal lines 122 corresponding to the even-numbered groups of the first solder joints 121 in the flexible circuit board 12 are located on the first side of the first solder joints 121, and the signal lines 122 corresponding to the odd-numbered groups of the first solder joints 121 are located on the second side of the first solder joints 121, that is to say, multiple signal lines 122 are respectively distributed on the opposite sides of the first solder joints 121. Compared with the wiring method in which all the signal lines 122 are distributed on the same side of the first solder joints 121, the method in which multiple signal lines 122 are respectively distributed on the opposite sides of the first solder joints 121 in the embodiment of the present application can improve the problem that the signal lines 122 in the bent part are long due to ensuring the minimum line spacing, thereby reducing the surface area of the flexible circuit board 12 in the electrode structure 100 and reducing the installation area required for the flexible circuit board 12. Therefore, the flexible circuit board 12 can be installed on the surface of a thinner support rod 11, which is beneficial to the miniaturization of the electrode structure 100 and reduces the tissue damage caused by the electrode structure 100 during use.

[0065] Based on the same inventive concept, an embodiment of the present application provides an ablation device, as Figure 6 and Figure 7 shown, including the electrode structure 100 as described above and an external device (not shown in the figure) electrically connected to the signal line (not shown in the figure) of the electrode structure 100.

[0066] In some embodiments, the external device may include an electrical stimulator or a deep brain stimulator (DBS), etc., which is used to generate a stimulation pulse signal and conduct current to the target biological tissue through the electrode structure 100, thereby performing electrical stimulation on the target biological tissue. It is applicable to the treatment of various nervous system diseases, such as epilepsy, Parkinson's disease, dystonia, etc.

[0067] In some other feasible embodiments, the external device may include a radiofrequency instrument or a high-frequency electrocautery, etc., which is used to generate a radiofrequency current and conduct the radiofrequency current to the target biological tissue through the electrode structure 100, thereby performing thermocoagulation on the target biological tissue. It is mainly used for the treatment of painful diseases, such as trigeminal neuralgia, sciatica, etc.

[0068] In still some other feasible embodiments, the external device may include an electroencephalograph, which is used to receive and display the biological information of the target biological tissue obtained by the electrode contacts 13.

[0069] Optionally, in some embodiments, the support rod 11 is in a hollow tubular shape, and the support rod 11 includes a first region located between adjacent electrode contacts; the first region is a transparent structure, or the first region is provided with a through hole penetrating the tube wall of the support rod 11.

[0070] The ablation device further includes a laser optical fiber and a temperature measurement optical fiber, both of which extend into the interior of the support rod 11; the light outlet of the laser optical fiber and the light outlet of the temperature measurement optical fiber are arranged in the same first region or in adjacent first regions.

[0071] Among them, the laser optical fiber is used to output laser to ablate the target tissue in the lesion area. The temperature measurement optical fiber is used to measure the temperature of the target biological tissue.

[0072] That is to say, the support rod 11 of the electrode structure 100 is in a hollow tubular shape for the optical fiber to extend into the support rod 11, and the light is emitted through the transparent structure or through hole on the tube wall of the support rod 11.

[0073] See Figure 6 and Figure 7 The ablation device may further include an optical fiber catheter 300 for accommodating the laser optical fiber and / or the temperature measurement optical fiber, so that the laser optical fiber and / or the temperature measurement optical fiber in the optical fiber catheter 300 extend into the support rod 11.

[0074] See Figure 6 The distal end of the support rod 11 of the electrode structure 100 may be a closed structure.

[0075] See Figure 7 The distal end of the support rod 11 of the electrode structure 100 may also be an open structure. In other words, an opening is provided at the distal end of the support rod 11. During the laser ablation surgery, the electrode structure 100 can be moved backward to completely expose the lesion at the diffusing end (i.e., the distal end) of the laser optical fiber, so that the ablation time can be shorter and the ablation can be more thorough.

[0076] See Figures 6 to 9 In some embodiments, the flexible circuit board of the electrode structure 100 further includes a plurality of second solder joints, and the proximal ends of the signal lines of the flexible circuit board are electrically connected to the second solder joints in one-to-one correspondence. The electrode structure 100 further includes a plurality of first connection contacts 14, and the plurality of first connection contacts 14 are welded to the second solder joints in one-to-one correspondence.

[0077] The ablation device further includes: a connector 200 having a connection channel for accommodating the proximal end of the support rod 11, and second connection contacts 15 connected to the first connection contacts 14 in one-to-one correspondence are provided on the inner wall of the connection channel; the connector 200 further includes an electrical connection portion 205, and the electrical connection portion 205 is electrically connected to the plurality of second connection contacts 15 and is used for electrical connection with an external device.

[0078] Furthermore, the connector 200 can be detachably connected to the support rod 11. As a split structure, it can adjust different specifications of the connector 200 and different specifications of the support rod 11 according to the actual situation, with strong flexibility.

[0079] As an example, at least a part of the connection channel of the connector 200 is sleeved outside the support rod 11. For example, the proximal end of the support rod 11 can be inserted and pulled out into the connection channel, or the proximal end of the support rod 11 is threadedly connected inside the connection channel.

[0080] See Figure 8 , for another example, the connector 200 may include a fixed part 201 and a movable part 202. The fixed part 201 is rotatably connected to the movable part 202, and the electrical connection part 205 is located on the fixed part 201. A first through groove 2011 is provided on the fixed part 201, and a second through groove 2021 is correspondingly provided on the movable part 202. When the movable part 201 rotates to an opening / closing angle of zero relative to the fixed part 202, the first through groove 2011 and the second through groove 2021 form a connection channel. That is, the connection channel of the connector 200 is in an openable / closable form.

[0081] In the embodiment of the present application, the movable part 202 and the fixed part 201 of the connector 200 can be connected together by a rotating shaft. The opening / closing angle at which the movable part 202 can rotate relative to the fixed part 201 includes: 0 - 90°. When the movable part 202 rotates to an opening / closing angle of zero relative to the fixed part 201, the movable part 202 and the fixed part 201 are in a closed state, and the first through groove 2011 and the second through groove 2021 form a connection channel. The connection channel is connected to the support rod 11. At this time, the catheter structure 2 can enter the support rod 11 through the connection channel, so that the catheter structure 2, such as an ablation optical fiber, can be used in subsequent laser ablation surgeries. When the rotation opening / closing angle of the movable part 202 relative to the fixed part 201 is greater than zero, the movable part 202 and the fixed part 201 are in an open state. At this time, the support rod 11 can be installed in the connection channel, or the support rod 11 can be removed from the connection channel.

[0082] See Figure 9 , in some other feasible embodiments, the ablation device further includes a connector 200. The connector 200 includes a detachable first plugging part 203 and a second plugging part 201. The first plugging part 203 is provided with pin arrays, and the second plugging part 204 is provided with pin holes that cooperate with the pin arrays.

[0083] Continue to see Figure 9 , the first plugging part 203 has a connection channel for accommodating the proximal end of the support rod 11. The pin arrays in the first plugging part 203 are electrically connected to the proximal ends of the signal lines of the flexible circuit board of the electrode structure 100. The pin holes of the second plugging part 201 are used for electrical connection with an external device.

[0084] It can be understood that in some other feasible embodiments, it can also be that the second plugging part 201 has a connection channel for accommodating the proximal end of the support rod 11. The pin holes in the second plugging part 201 are electrically connected to the proximal ends of the signal lines of the flexible circuit board of the electrode structure 100. The pin arrays of the first plugging part 203 are used for electrical connection with an external device.

[0085] For the case where the connector 200 includes a detachable first plugging portion 203 and a second plugging portion 201, the connector 200 can be detachably connected to the support rod 11 or fixedly connected to the support rod 11. For the connector 200 that can be detachably connected to the support rod 11, the proximal end of the support rod 11 can be inserted into or pulled out of the connection channel, or the proximal end of the support rod 11 can be threadedly connected within the connection channel.

[0086] In some embodiments, a first opening is provided at the proximal end of the lumen of the hollow tubular support rod 11, and a second opening is provided at the proximal end of the connection channel. The connection channel and the lumen of the support rod 11 form a continuous cavity. The continuous cavity extends from the second opening to the distal end of the support rod 11 to form an axial passage for the intervention instrument to penetrate. Among them, the intervention instrument can be an optical fiber, for example, a temperature measurement optical fiber and an ablation optical fiber.

[0087] In some embodiments, the second opening is configured to have a first state communicating with the outside and a second state isolated from the outside. When the second opening is in the first state, along the axial direction of the support rod 11, the second opening is located at the end of the connector 200, and the connection channel of the connector 200 penetrates through the proximal end of the connector 200. When the second opening is in the second state, the second opening is located inside the connector 200, the connection channel of the connector 200 does not penetrate through the proximal end of the connector 200, the front end of the connection channel is connected to the first opening at the proximal end of the support rod 11, and the second opening at the end of the connection channel is located inside the connector 200.

[0088] When the second opening is in the first state, the detachable connection methods between the support rod 11 and the connector 200 include: inserting and pulling out the proximal end of the support rod 11 into the connection channel, threadedly connecting the proximal end of the support rod 11 to the connection channel, or placing the proximal end of the support rod 11 in an openable and closable connection channel, etc. The non-detachable connection methods between the support rod 11 and the connector 200 include: at least part of the connection channel of the connector 200 is fixedly and inseparably connected to the support rod 11 in forms such as sleeving or butting.

[0089] When the second opening is in the second state, the detachable connection methods between the support rod 11 and the connector 200 include: inserting and pulling out the proximal end of the support rod 11 into the connection channel, threadedly connecting the proximal end of the support rod 11 to the connection channel, or placing the proximal end of the support rod 11 in an openable and closable connection channel, etc. The non-detachable connection methods between the support rod 11 and the connector 200 include: fixing the proximal part of the support rod 11 in an openable and closable connection channel.

[0090] It can be understood that this embodiment is the corresponding embodiment of the ablation device in the foregoing embodiments. The technical details and technical effects of the two can be mutually referred to, and will not be elaborated here.

[0091] Those skilled in the art of the present application can understand that the various operations, methods, steps, measures, and solutions in the processes discussed in the present application can be alternated, changed, combined, or deleted. Further, other steps, measures, and solutions in the various operations, methods, and processes discussed in the present application can also be alternated, changed, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and solutions in the relevant technologies that are the same as those disclosed in the various operations, methods, and processes in the present application can also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0092] In the description of the present application, the directions or positional relationships indicated by the words "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the exemplary directions or positional relationships shown in the drawings, and are for the convenience of describing or simplifying the embodiments of the present application, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0093] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0094] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0095] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0096] The above are only some embodiments of the present application. It should be noted that for those of ordinary skill in the art of the present technology, without departing from the technical concept of the solution of the present application, other similar implementation means based on the technical idea of the present application also belong to the protection scope of the embodiments of the present application.

Claims

1. An electrode structure, characterized in that: include: Support rods; A flexible circuit board is arranged on the surface of the support rod, comprising a plurality of first solder joints and a plurality of signal lines, wherein the distal ends of the signal lines are electrically connected to the first solder joints one by one, and the proximal ends of the signal lines are used to electrically connect to an external device; the signal lines corresponding to the first solder joints of the even-numbered groups are located on a first side of the first solder joints, and the signal lines corresponding to the first solder joints of the odd-numbered groups are located on a second side of the first solder joints; each group of first solder joints comprises at least one first solder joint; A plurality of electrode contacts are arranged at the distal end of the support rod, and the electrode contacts are welded to the first welding points one by one, for obtaining biological information of the target biological tissue, and / or applying the electrical signal output by an external device to the target biological tissue to regulate the target biological tissue.

2. The electrode structure according to claim 1, characterized in that: The signal lines corresponding to the first N first solder joints are located on the second side of the first solder joint, and the signal lines corresponding to the last M first solder joints are located on the first side of the first solder joint; N is an integer greater than or equal to 2, and M is an integer greater than or equal to 2.

3. The electrode structure according to claim 1, characterized in that: The signal lines corresponding to the even-numbered first soldering points are located at a first side of the first soldering points, and the signal lines corresponding to the odd-numbered first soldering points are located at a second side of the first soldering points.

4. The electrode structure according to claim 1, characterized in that: A plurality of the first welding points are arranged in a straight line along the extension direction of the support rod; The signal line includes a first connecting line segment pointing from the corresponding first welding point to the adjacent first welding point, a second connecting line segment extending from the end of the first connecting line segment, and a third connecting line segment extending from the end of the second connecting line segment along the extension direction of the support rod.

5. The electrode structure according to claim 1, characterized in that: The support rod is in a hollow tube shape, and includes a first region located between adjacent electrode contacts, wherein the first region is a transparent structure; The support rod is used for the optical fiber to extend into and emit light through the first area.

6. The electrode structure according to claim 1, characterized in that: The support rod is in a hollow tube shape, the support rod includes a first area located between adjacent electrode contacts, and the support rod also includes a through hole located in the first area and penetrating the tube wall of the support rod; The support rod is used for the optical fiber to extend into and extend out through the through hole.

7. The electrode structure according to claim 6, characterized in that: It also includes a plugging component, which is flexible, has an outer peripheral wall fixedly connected to the inner peripheral wall of the through hole, and is constructed to deform when the optical fiber passes through to open the through hole and plug the through hole without external force.

8. The electrode structure according to claim 1, characterized in that: The same position of each electrode contact is welded to the corresponding first welding point.

9. An ablation device, characterized in that: The invention comprises the electrode structure as claimed in any one of claims 1 to 8, and an external device electrically connected to a signal line of the electrode structure.

10. The ablation device according to claim 9, characterized in that: The support rod is in a hollow tube shape, and includes a first region located between adjacent electrode contacts; the first region is a transparent structure, or the first region is provided with a through hole penetrating the tube wall of the support rod; The ablation device also includes a laser optical fiber and a temperature measuring optical fiber, both of which extend into the interior of the support rod; the ends of the laser optical fiber and the temperature measuring optical fiber are arranged in the same first area, or in adjacent first areas.

11. The ablation device according to claim 9, characterized in that: The flexible circuit board of the electrode structure further comprises: a plurality of second solder joints, the proximal ends of the signal lines of the flexible circuit board being electrically connected to the second solder joints in a one-to-one correspondence; The electrode structure further comprises: a plurality of first connection contacts, welded to the second welding points in a one-to-one correspondence; The ablation device also includes: a connector having a connection channel for accommodating the proximal end of the support rod, the inner wall of the connection channel being provided with second connection contacts connected one-to-one with the first connection contacts; the connector also includes an electrical connection portion, electrically connected to multiple second connection contacts, and used to electrically connect to the external device.

12. The ablation device according to claim 11, characterized in that: The connector includes a fixed part and a movable part, the fixed part is rotatably connected to the movable part, and the electrical connection part is located on the fixed part; a first through groove is provided on the fixed part, and a second through groove is correspondingly provided on the movable part, and when the movable part rotates to an opening and closing angle of zero relative to the fixed part, the first through groove and the second through groove constitute the connecting channel.

13. The ablation device according to claim 9, characterized in that: Also includes: The connector comprises a detachable first plug-in portion and a second plug-in portion, wherein the first plug-in portion is provided with a row of pins, and the second plug-in portion is provided with a row of pin holes matching with the row of pins; The first plug-in portion has a connection channel for accommodating the proximal end of the support rod, the pin row is electrically connected to the proximal end of the signal line of the flexible circuit board of the electrode structure, and the pin row hole is used to electrically connect to the external device, or the second plug-in portion has a connection channel for accommodating the proximal end of the support rod, the pin row hole is electrically connected to the proximal end of the signal line of the flexible circuit board of the electrode structure, and the pin row is used to electrically connect to the external device.

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