Electrode treatment structure, ablation electrode for artery and ablation equipment

Abstract

The utility model provides an electrode treatment structure, ablation electrode and ablation equipment for artery, including electrode portion, joining section a, joining section b and temperature measurement portion, wherein: the electrode portion includes front end portion, back end portion electrode portion, electrode portion is made of elastic material; the temperature measuring part is connected with the electrode part and acquires a temperature value when the electrode part is in a working state; the connection section a and the connection section b are both connected with an external pulling part, the connection section a is a fixed end, the connection section b is a movable end, under the action of pulling force, the connection section b moves towards the position of the connection section a in the horizontal direction, the electrode part is bent in the radial direction with the axis A-A as the center along with movement of the connection section b, and a convex arc-shaped bent structure is formed; the curvature of the electrode part is in direct proportion to the moving distance of the connection section. The electrode part can be bent along with the moving position of the connecting section b, so that the affected part on the inner wall of the blood vessel can be treated conveniently, and the bending degree of the electrode part can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of radiofrequency electrodes, and in particular to an electrode treatment structure, an ablation electrode for arteries, and an ablation device. Background Technology

[0002] Radiofrequency ablation electrodes are key components in radiofrequency ablation treatment systems, playing a crucial role in the effectiveness of radiofrequency ablation therapy.

[0003] A patent with publication number CN102370533B discloses a delivery system for treating lung volume reduction with a cold circulation system. The system includes a valve stent, an outer cannula, a metal flexible tube, and a handle. The two ends of the metal flexible tube are connected to the outer cannula and the handle, respectively. A cooling chamber is provided inside the outer cannula, and the valve stent is disposed inside the outer cannula. The system is characterized by its cold circulation system, which controls the softening and repositioning of the valve stent. After softening and repositioning, the valve stent is retracted into the outer cannula. The valve stent has a multi-segment structure, and a push handle is provided at the end of the metal flexible tube. The push handle drives the metal flexible tube to move back and forth within the handle. When the metal flexible tube moves backward, it drives the outer cannula backward, extending the valve stent from inside the outer cannula. Placed inside the bronchus; the top of the handle has a sliding groove for pushing the handle to move it, and the end of the handle has a water-cooling connector. The front end of the handle also has an outer protective sleeve, which wraps around the outside of the metal hose. The end of the outer protective sleeve is connected to the front end of the handle. The water-cooling connector is connected to the water-cooling pipe inside the metal hose, and the water-cooling pipe is connected to the cooling chamber. The outer wall surface of the outer tube has graduation lines, which are used to position the valve stent in the bronchus. The outer tube also has an inlet pipe and an outlet pipe. The inlet pipe is located inside the cooling chamber, and the outlet pipe is located between the inlet pipe and the cooling chamber. The water-cooling pipe delivers cold water to the cooling chamber through the inlet pipe and then returns to the water-cooling pipe through the outlet pipe to form a water-cooling circulation system.

[0004] In the aforementioned patent, the valve stent is made of shape memory alloy. When the valve stent is placed on the affected area, it can automatically open into a mesh structure at a temperature above 36°C, thereby contacting the affected area to perform treatment.

[0005] However, in the aforementioned patent, once the valve stent is placed at the site of treatment, it fully opens when the temperature exceeds 36°C, and the degree of opening of the valve stent cannot be adjusted. Therefore, how to adjust the curvature of the electrode portion is a problem that urgently needs to be solved. Utility Model Content

[0006] To address the shortcomings mentioned above, this invention provides an electrode treatment structure, an arterial ablation electrode, and an ablation device that allow the electrode portion to bend along with the moving position of the connecting segment b, facilitating the treatment of lesions on the inner wall of blood vessels, and that allows adjustment of the bending degree of the electrode portion.

[0007] To achieve the above objectives, in a first aspect, this utility model provides an electrode treatment structure, comprising at least one electrode portion, at least one connecting segment a, at least one connecting segment b, and at least one temperature measuring portion, wherein:

[0008] The electrode portion includes a front end portion and a rear end portion respectively embedded inside the connecting segment a and the connecting segment b, and an electrode portion respectively connected to the front end portion and the rear end portion, wherein a portion of the electrode portion is made of an elastic material;

[0009] The temperature measuring unit is connected to the electrode unit and collects the temperature value of the electrode unit when it is in working condition;

[0010] Both connecting segment a and connecting segment b are connected to an external pulling part. Connecting segment a is a fixed end, and connecting segment b is a moving end. Under the action of tension, connecting segment b moves horizontally toward the position of connecting segment a. A part of the electrode part undergoes radial bending centered on the axis (AA) as the connecting segment b moves, forming an outwardly convex arc-shaped bending structure. The curvature of the electrode part is proportional to the moving distance of the connecting segment.

[0011] In one embodiment, the electrode portion includes an electrode support and a plurality of electrode assemblies, wherein the electrode support includes an annular support embedded in the front end face of the connecting segment a, and a plurality of deformable portions connected to the annular support and arranged in a circumferential direction around the axis (AA), the front end of each deformable portion being embedded in the rear end face of the connecting segment b, and the electrode assembly being sleeved on the outside of the deformable portion.

[0012] In one embodiment, the electrode assembly includes an electrode point, a first insulating sleeve, and a second insulating sleeve. The electrode point, the first insulating sleeve, and the second insulating sleeve are all sleeved on the outside of the deformed portion. The first insulating sleeve and the second insulating sleeve are respectively located on both sides of the electrode point.

[0013] In one embodiment, a portion of the temperature measuring unit is placed inside the first insulating sheath, and the front end of the temperature measuring unit is connected to the electrode point to collect the temperature value of the electrode point when it is in working condition.

[0014] Secondly, this utility model provides an ablation electrode for arteries, comprising a housing portion, a pulling portion, an electrode transmission portion, an injection portion, and at least one of the above-mentioned electrode treatment structures, wherein:

[0015] The electrode transmission section is connected to the electrode section through the temperature measuring section, and provides radio frequency energy to the electrode section;

[0016] The pulling part includes a push-pull button, a wire, and a wire end cap. The wire end cap is fixed to the front end face of the connecting segment b. After the front end of the wire passes through the interior of the connecting segment b and the connecting segment a in sequence, it is connected to the wire end cap. The rear end of the wire is connected to the push-pull button. The push-pull button controls the wire and the wire end cap to drive the connecting segment b to move horizontally toward the position of the connecting segment a. The electrode part generates a radial bend centered on the axis (AA) along the movement of the connecting segment b, forming an outwardly convex arc-shaped bending structure that contacts the inner wall of the blood vessel.

[0017] In one embodiment, the pulling part further includes a limiting segment a and a limiting segment b, wherein the limiting segment a and the limiting segment b are both sleeved on the outside of the wire, the limiting segment a is located near the front end of the connecting segment a, a part of the limiting segment b is placed inside the connecting segment b, and another part is located on the rear side of the connecting segment b and faces the front end of the limiting segment a.

[0018] The wire moves backward, and when the limiting segment a contacts the limiting segment b, the curvature of the electrode portion is limited.

[0019] In one embodiment, the electrode transmission section includes a cable connector, a wire, a push-button switch, and an electrode transmission conduit, wherein the cable connector is connected to the push-button switch via the wire, and the electrode transmission conduit is connected to the push-button switch and the connecting segment a, respectively;

[0020] When the push-button switch is in the ON state, radio frequency energy is sequentially input into each of the electrode sections through the electrode transmission conduit and the connecting section a.

[0021] In one embodiment, the housing portion includes a handle housing, a first sheath, a second sheath, a sealing assembly, a spring guide, and a sleeve, wherein:

[0022] The sealing assembly is fixed inside the handle housing, and the end of the first sheath is placed inside the handle housing, located at the front end of the sealing assembly;

[0023] A portion of the sleeve is located sequentially inside the spring guide tube, the second sheath, and the first sheath; a portion of the wire drawing and a portion of the temperature measuring part are both located inside the sleeve.

[0024] The ends of the spring conduit and the second sheath are embedded inside the sealing assembly, and the sleeve penetrates the interior of the sealing assembly;

[0025] The front end of the second sheath extends to the outside of the first sheath, and the end of the connecting segment b is embedded inside the second sheath.

[0026] In one embodiment, the injection portion includes an injection tube a, an injection tube b, and an injection channel, wherein:

[0027] The front end of the injection tube a is placed inside the handle housing;

[0028] The injection tube b is placed inside the handle housing, its end is placed inside the injection tube a, and its front end is placed inside the sealing assembly;

[0029] A portion of the injection channel is formed by the gap between the sleeve and the spring conduit.

[0030] Thirdly, this utility model provides an ablation device, including the above-mentioned arterial ablation electrode, electrode generating device and liquid container, wherein the arterial ablation electrode is connected to the electrode generating device through a cable connector, and the arterial ablation electrode is connected to the liquid container through an injection tube a.

[0031] Compared with the prior art, the present invention has one of the following advantages:

[0032] Because the connecting segment b can move horizontally towards the position of the connecting segment a under the drive of the pulling part, the electrode part bends as the connecting segment b moves, thereby forming an outwardly convex arc-shaped curved structure that contacts the inner wall of the blood vessel, which facilitates radiofrequency treatment of the affected area on the inner wall of the blood vessel and allows for adjustment of the curvature of the limiting electrode part.

[0033] By setting a spring-loaded catheter, the second sheath has a certain degree of elasticity during treatment;

[0034] The injection site can also inject hemostatic drugs into the bleeding site inside the blood vessel during radiofrequency ablation, so that the hemostatic drugs come into contact with the bleeding site to stop the bleeding, achieving the dual effect of radiofrequency ablation hemostasis and drug hemostasis. Attached Figure Description

[0035] Figure 1 This is a three-dimensional view of the ablation electrode in this embodiment;

[0036] Figure 2 for Figure 1 Enlarged view of section A;

[0037] Figure 3 for Figure 1 A sectional view;

[0038] Figure 4 for Figure 3 Enlarged view of section B;

[0039] Figure 5 for Figure 3 Enlarged view of section C;

[0040] Figure 6 for Figure 3 Enlarged view of section D;

[0041] Figure 7 for Figure 4 Enlarged view of section E in the middle;

[0042] Figure 8 for Figure 1 The right view;

[0043] Figure 9 for Figure 1 A three-dimensional view of the first electrode section;

[0044] Figure 10 This is a schematic diagram of the ablation device in this embodiment.

[0045] The main reference numerals are as follows:

[0046] 1-Electrode treatment structure; 100-First electrode part; 101-First deformable part a; 102-First annular support;

[0047] 103 - First electrode point; 104 - First insulating sleeve a; 105 - Second insulating sleeve a; 106 - Second deformable part a;

[0048] 110 - Second electrode section; 120 - Third electrode section; 130 - First connecting section; 140 - Second connecting section; 150 - Third connecting section; 160 - Fourth connecting section; 170 - First temperature measuring section; 2 - Housing section; 200 - Handle housing; 201 - First protective sleeve; 202 - Second protective sleeve; 203 - Sealing assembly; 2031 - Adapter; 2032 - Seal; 2033 - First through hole; 2034 - Second through hole; 204 - Spring guide tube; 3 - Electrode transmission section; 300 - Cable connector; 301-Wire; 302-Push-button switch; 303-Electrode transmission conduit; 4-Pull part; 400-Wire drawing; 401-Push-pull button; 402-Wire drawing end cap; 403-First limiting section; 404-Second limiting section; 405-Third limiting section; 406-Fourth limiting section; 407-Fifth limiting section; 408-Sixth limiting section; 5-Injection part; 501-Injection tube a; 502-Injection tube b; 6-Arterial ablation electrode; 7-Electrode generating device; 8-Liquid container. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0050] Example 1

[0051] like Figure 2 , Figure 3 , Figure 8 and Figure 9 As shown, this embodiment provides an electrode treatment structure 1, including a first electrode portion 100, a second electrode portion 110, a third electrode portion 120 with identical structures, a first connecting segment 130, a second connecting segment 140, a third connecting segment 150, and a fourth connecting segment 160 with identical structures, and a first temperature measuring portion 170, a second temperature measuring portion, and a third temperature measuring portion with identical structures. The first electrode portion 100, the second electrode portion 110, the third electrode portion 120, the first connecting segment 130, the second connecting segment 140, the third connecting segment 150, and the fourth connecting segment 160 are all arranged horizontally in sequence along the same axis (i.e., axis AA). The rear end and the front end of the first electrode portion 100 are respectively embedded inside the first connecting segment 130 and the second connecting segment 140; the rear end and the front end of the second electrode portion 110 are respectively embedded inside the second connecting segment 140 and the third connecting segment 150; and the rear end and the front end of the third electrode portion 120 are respectively embedded inside the third connecting segment 150 and the fourth connecting segment 160.

[0052] Furthermore, the first connecting segment 130, the second connecting segment 140, the third connecting segment 150 and the fourth connecting segment 160 are all connected to the external pulling part. The first connecting segment 130 is a fixed end, fixed to the front end of the external handle housing, and the second connecting segment 140, the third connecting segment 150 and the fourth connecting segment 160 are movable ends.

[0053] In this embodiment, specifically, the first electrode portion 100 includes a first electrode support and a plurality of first electrode assemblies. The first electrode support includes a first annular support 102 embedded in the front end face of the first connecting segment 130, and a first deformable portion a101 and a second deformable portion a106 embedded in the rear end face of the second connecting segment 140. The rear end faces of both the first and second deformable portions a101 and a106 are connected to the front end face of the first annular support 102, and both are arranged circumferentially around the axis AA. The front ends of both the first and second deformable portions a101 and a106 are embedded in the rear end face of the second connecting segment 140. The first electrode assembly includes a first electrode assembly a and a second electrode assembly a. The first electrode assembly a is sleeved on the outside of the first deformable portion a101, and the second electrode assembly a is sleeved on the outside of the second deformable portion a106.

[0054] Preferably, both the first deformable part a101 and the second deformable part a106 are strip-shaped structures and are made of elastic material.

[0055] Furthermore, the first electrode assembly a and the second electrode assembly a have the same structure, both including a first electrode point 103, a first insulating sleeve a104, and a second insulating sleeve a105. The first electrode point 103, the first insulating sleeve a104, and the second insulating sleeve a105 are all sleeved on the outside of the first deformable portion a101, with the first insulating sleeve a104 and the second insulating sleeve a105 located on either side of the first electrode point 103. Similarly, the first electrode point 103, the first insulating sleeve a104, and the second insulating sleeve a105 are all sleeved on the outside of the second deformable portion a106, with the first insulating sleeve a104 and the second insulating sleeve a105 located on either side of the first electrode point 103.

[0056] Furthermore, the front end of the first temperature measuring unit 170 is connected to one of the first electrode components, namely the first electrode component a and the second electrode component a, to collect the temperature value of the first electrode component a or the second electrode component a when the first electrode component is in working condition, and the rear end of the first temperature measuring unit 170 is connected to a cable connector.

[0057] Furthermore, a portion of the first temperature measuring unit 170 is placed inside one of the first insulating sleeves a104, and the front end of the first temperature measuring unit 170 is connected to the first electrode point 103 to collect the temperature value when the first electrode point 103 is in working state.

[0058] In this embodiment, specifically, the second electrode portion 110 includes a second electrode support and a plurality of second electrode assemblies. The second electrode support includes a second annular support embedded in the front end face of the second connecting segment 140, and a first deformable portion b and a second deformable portion b embedded in the rear end face of the third connecting segment 150. The rear end faces of both the first and second deformable portions b are connected to the front end face of the second annular support, and both the first and second deformable portions b are arranged circumferentially around the axis AA. The front ends of both the first and second deformable portions b are embedded in the rear end face of the third connecting segment 150. The second electrode assemblies include a second electrode assembly a and a second electrode assembly b, wherein the second electrode assembly a is sleeved on the outside of the first deformable portion b, and the second electrode assembly b is sleeved on the outside of the second deformable portion b.

[0059] Preferably, both the first deformable part b and the second deformable part b are strip-shaped structures and are made of elastic material.

[0060] Furthermore, the second electrode assembly a and the second electrode assembly b have the same structure, both including a second electrode point, a first insulating sleeve b, and a second insulating sleeve b. The second electrode point, the first insulating sleeve b, and the second insulating sleeve b are all sleeved on the outside of the first deformable portion b, with the first insulating sleeve b and the second insulating sleeve b located on either side of the second electrode point. The second electrode point, the first insulating sleeve b, and the second insulating sleeve b are all sleeved on the outside of the second deformable portion b, with the first insulating sleeve b and the second insulating sleeve b located on either side of the second electrode point.

[0061] Furthermore, the front end of the second temperature measuring unit is connected to one of the second electrode assembly a and the second electrode assembly b, and the temperature value is collected when the second electrode assembly a or the second electrode assembly b is in working condition. The rear end of the second temperature measuring unit is connected to a cable connector.

[0062] Furthermore, a portion of the second temperature measuring unit is placed inside one of the first insulating sheaths b, and the front end of the second temperature measuring unit is connected to the second electrode point to collect the temperature value when the second electrode point is in working condition.

[0063] In this embodiment, specifically, the third electrode portion 120 includes a third electrode support and a plurality of third electrode assemblies. The third electrode support includes a third annular support embedded in the front end face of the second connecting segment 140, and a first deformable portion c and a second deformable portion c embedded in the rear end face of the third connecting segment 150. The rear end faces of both the first and second deformable portions c are connected to the front end face of the third annular support, and both are arranged circumferentially around the axis AA. The front ends of both the first and second deformable portions c are embedded in the rear end face of the third connecting segment 150. The third electrode assembly includes a third electrode assembly a and a third electrode assembly b. The third electrode assembly a is sleeved on the outside of the first deformable portion c, and the third electrode assembly b is sleeved on the outside of the second deformable portion c.

[0064] Preferably, both the first deformation part c and the second deformation part c are strip-shaped structures and are made of elastic material.

[0065] Furthermore, the third electrode assembly a and the third electrode assembly b have the same structure, both including a third electrode point, a first insulating sleeve c, and a second insulating sleeve c. The third electrode point, the first insulating sleeve c, and the second insulating sleeve c are all sleeved on the outside of the first deformable portion c, with the first insulating sleeve c and the second insulating sleeve c located on either side of the third electrode point. The third electrode point, the first insulating sleeve c, and the second insulating sleeve c are all sleeved on the outside of the second deformable portion c, with the first insulating sleeve c and the second insulating sleeve c located on either side of the third electrode point.

[0066] Furthermore, the front end of the third temperature measuring unit is connected to one of the third electrode assembly a and the third electrode assembly b to collect the temperature value when the third electrode assembly a or the third electrode assembly b is in working condition, and the rear end of the third temperature measuring unit is connected to the cable connector.

[0067] Furthermore, a portion of the third temperature measuring unit is placed inside one of the first insulating sheaths c, and the front end of the third temperature measuring unit is connected to the third electrode point to collect the temperature value when the third electrode point is in working condition.

[0068] In this embodiment, when radio frequency energy is input to the first electrode point 103, the second electrode point, and the third electrode point, when the pulling part drives the fourth connecting segment 160, the third connecting segment 150, and the second connecting segment 140 to move sequentially closer to the first connecting segment 130 along the horizontal direction of the axis AA (that is, the fourth connecting segment 160, the third connecting segment 150, and the second connecting segment 140 move sequentially backward under the action of the pulling force), the first deformable part a, the second deformable part a, the two first electrode assemblies, the first deformable part b, the second deformable part b, the two second electrode assemblies, the first deformable part c, the second deformable part c, and the two third electrode assemblies are all transformed from a reset straight structure into an outwardly convex arc-shaped curved structure, which contacts the inner wall of the blood vessel. The degree of bending of the first deformation part a, the second deformation part a, the first deformation part b, the second deformation part b, the first deformation part c, and the second deformation part c is proportional to the distance that the fourth connecting segment 160, the third connecting segment 150, and the second connecting segment 140 move toward the first connecting segment 130 in sequence. When the pulling part drives the fourth connecting segment 160, the third connecting segment 150, and the second connecting segment 140 to move away from the first connecting segment 130 in sequence along the horizontal direction of the axis AA (that is, the fourth connecting segment 160, the third connecting segment 150, and the second connecting segment 140 move forward in sequence under the action of the pulling force), the first deformation part a, the second deformation part a, the two first electrode assemblies, the first deformation part b, the second deformation part b, the two second electrode assemblies, the first deformation part c, the second deformation part c, and the two third electrode assemblies are all restored from an outwardly convex arc-shaped bending structure to a straight structure.

[0069] In this embodiment, the first deformation part a, the second deformation part a, the first deformation part b, the second deformation part b, the first deformation part c, and the second deformation part c are all made of elastic material. When the first deformation part a, the second deformation part a, the first deformation part b, the second deformation part b, the first deformation part c, and the second deformation part c are all in a convex arc-shaped bending structure, such as Figure 9 As shown, the first deformable part a, the second deformable part a, the two first electrode assemblies, the first deformable part b, the second deformable part b, the two second electrode assemblies, the first deformable part c, the second deformable part c, and the two third electrode assemblies generally form a spherical structure.

[0070] In this embodiment, the first temperature measuring unit 170, the second temperature measuring unit, and the third temperature measuring unit all use thermocouple wires. The thermocouple wires are connected to the first electrode point 103, the second electrode point, and the third electrode point respectively to collect the temperature values ​​of the first electrode point 103, the second electrode point, and the third electrode point when they are in operation.

[0071] In this embodiment, since the first electrode portion 100, the second electrode portion 110, and the third electrode portion 120 have the same structure, the first deformation portion a, the second deformation portion a, the first deformation portion b, the second deformation portion b, the first deformation portion c, and the second deformation portion c have the same structure, and the two first electrode assemblies, the two second electrode assemblies, and the two third electrode assemblies also have the same structure.

[0072] Example 2

[0073] like Figures 1 to 10 As shown, this embodiment provides an ablation electrode for arteries, including a housing portion 2, a pulling portion 4, an electrode transmission portion 3, an injection portion 5, and the electrode treatment structure 1 described in Embodiment 1 above.

[0074] In this embodiment, specifically, the housing portion 2 includes a handle housing 200, a first sheath 201, a second sheath 202, a sealing assembly 203, a spring guide tube 204, and a sleeve, wherein:

[0075] The sealing assembly 203 is fixed inside the handle housing 200. The rear end of the first sheath 201 is located inside the handle housing 200, at the front end of the sealing assembly 203. A portion of the sleeve is sequentially located inside the spring guide 204, the first sheath 201, and the second sheath 202. A portion of the pulling part 4 and a portion of the temperature measuring part are both located inside the sleeve. The rear ends of the spring guide 204 and the second sheath 202 are embedded inside the sealing assembly 203, and the sleeve penetrates through the interior of the sealing assembly 203. The front end of the second sheath 202 extends to the outside of the first sheath 201, and the rear end of the first connecting section 130 is embedded inside the second sheath 202.

[0076] Furthermore, the sealing assembly 203 includes a sealing element 2032 and an adapter 2031 embedded inside the sealing element 2032. The sealing element 2032 is clamped in a fixed position within the handle housing 200. The sealing element 2032 includes a first cavity and a second cavity that communicate with each other. The adapter 2031 is embedded inside the second cavity. The ends of the second sheath 202 and the spring conduit 204 are both embedded inside the first cavity. A first through hole 2033 and a second through hole 2034 are provided on the adapter 2031. When the adapter 2031 is embedded inside the second cavity, the area between the front end face of the adapter 2031 and the first cavity forms an infusion area. Additionally, the end of the sleeve, after penetrating the interior of the spring conduit 204, extends rearward through the first cavity, the infusion area, and the interior of the adapter 2031.

[0077] Furthermore, a fixing position is formed on the outer wall surface of the first cavity, and the sealing assembly 203 is fixed inside the handle housing 200 by the fixing position and the fixing member.

[0078] Furthermore, the first through hole 2033 is coaxially positioned with the first cavity, and the second through hole 2034 is located at the lower end of the first through hole 2033.

[0079] In the housing part 2, a spring conduit 204 is provided so that the second sheath 202 has a certain elasticity during treatment.

[0080] In this embodiment, specifically, the electrode transmission section 3 is connected to the electrode section through the temperature measuring section, and provides radio frequency energy to the electrode section.

[0081] Furthermore, the electrode transmission section 3 includes a cable connector 300, a wire 301, a push-button switch 302, and an electrode transmission conduit 303. The cable connector 300 is connected to the push-button switch 302 via the wire 301, and the electrode transmission conduit 303 is connected to the push-button switch 302 and the first connecting section 130, respectively.

[0082] Furthermore, the rear end of the first connecting section 130 is placed in the second sheath 202, thereby connecting to the electrode transmission conduit 303.

[0083] Furthermore, a portion of the push-button switch 302 is located on the top end face of the handle housing 200, while the other portion of the push-button switch is located inside the handle housing 200.

[0084] When the button switch 302 is in the open state, radio frequency energy is input to the electrode treatment structure 1 described in the above embodiment 1 through the electrode transmission conduit 303, and the electrode treatment structure 1 inputs radio frequency energy to the inner wall of the blood vessel.

[0085] In this embodiment, specifically, the pull part 4 includes a push-pull button 401, a wire 400, and a wire end cap 402. A portion of the wire 400 penetrates the interior of the sleeve. The end of the wire end cap 402 is fixed to the front end face of the fourth connecting section 160. The rear end of the wire 400 is connected to the push-pull button 401. The front end of the wire 400, after sequentially penetrating the first connecting section 130, the second connecting section 140, and the third connecting section 150, is placed inside the fourth connecting section 160 and connected to the wire end cap 402. When the push-pull button 401 moves toward the rear end of the handle housing 200, the push-pull button 401 controls the wire puller 400 to move backward along the axis AA. Under the action of the wire puller 400, the wire puller end cap 402 drives the fourth connecting section 160, the third connecting section 150 and the second connecting section 140 to move sequentially toward the position of the first connecting section 130, so that the first deformed part a, the second deformed part a, the two first electrode assemblies, the first deformed part b, the second deformed part b, the two second electrode assemblies, the first deformed part c, the second deformed part c and the two third electrode assemblies change from a reset straight structure to an outwardly convex arc-shaped curved structure, and come into contact with the inner wall of the blood vessel.

[0086] Furthermore, the pulling part 4 also includes a first limiting segment 403, a second limiting segment 404, a third limiting segment 405, a fourth limiting segment 406, a fifth limiting segment 407 and a sixth limiting segment 408, which are sequentially fitted onto the outside of the wire drawing 400. The first limiting segment 403 is located at the front end of the first connecting segment 130 and is adjacent to the first connecting segment 130. A portion of the second limiting segment 404 is located inside the second connecting segment 140, with its front end face on the same plane as the front end face of the second connecting segment 140. Another portion of the second limiting segment 404 is located on the rear side of the second connecting segment 140 and faces the first connecting segment 130. The third limiting segment 405 is located at the front end of the second connecting segment 140 and is adjacent to the second connecting segment 140. A portion of the fourth limiting segment 406 is located inside the third connecting segment 150, with its front end face on the same plane as the front end face of the third connecting segment 150. Another portion of the fourth limiting segment 406 is located on the rear side of the third connecting segment 150 and faces the second connecting segment 140. The fifth limiting segment 407 is located at the front end of the third connecting segment 150 and is adjacent to the third connecting segment 150. The sixth limiting segment 408 is located at the rear end of the fourth connecting segment 160 and is adjacent to the fourth connecting segment 160.

[0087] In this embodiment, under the action of the wire drawing 400, the fourth connecting segment 160, the third connecting segment 150, and the second connecting segment 140 move sequentially towards the position of the first connecting segment 130. When the rear end face of the sixth limiting segment 408 contacts the front end face of the fifth limiting segment 407, the positions of the first deformed part c and the second deformed part c can be limited, and at this time, the curvature of the two first deformed parts c and the second deformed part c reaches its maximum value. When the rear end face of the fourth limiting segment 406 contacts the front end face of the third limiting segment 405, the positions of the first deformed part b and the second deformed part b can be limited, and at this time, the curvature of the first deformed part b and the second deformed part b reaches its maximum value. When the rear end face of the second limiting segment 404 contacts the front end face of the first limiting segment 403, the positions of the first deformed part a and the second deformed part a can be limited, and at this time, the curvature of the first deformed part a and the second deformed part a reaches its maximum value.

[0088] In this embodiment, specifically, the injection section 5 includes an injection tube a501, an injection tube b502, and an injection channel. The front end of injection tube a501 is located inside the handle housing 200, and the end of injection tube a501 is located outside the handle housing 200. Injection tube b502 is located inside the handle housing 200, with its end embedded inside injection tube a501, and its front end located inside the second through hole 2034 in the sealing assembly 203. Injection tubes a501 and b502 inject external liquid into the injection channel formed inside the handle housing 200, and inject the liquid into a blood vessel through the other end of the injection channel.

[0089] Furthermore, the injection channel is formed by the infusion area, the first cavity, and the spacer area between the cannula and the spring conduit 204.

[0090] In this embodiment, after the electrode treatment structure and a portion of the second sheath 202 are placed inside the blood vessel, the push-pull button 401 moves backward, and the pull wire 400 and the pull wire end cap 402 drive the fourth connecting segment 160, the third connecting segment 150 and the second connecting segment 140 to move sequentially to the position of the first connecting segment 130. This causes the first deformed part a, the second deformed part a, the two first electrode assemblies, the first deformed part b, the second deformed part b, the two second electrode assemblies, the first deformed part c, the second deformed part c and the two third electrode assemblies to change from a reset straight structure to an outwardly convex arc-shaped curved structure, which contacts the inner wall of the blood vessel, thereby performing radiofrequency ablation on the affected area on the inner wall of the blood vessel.

[0091] In addition, through the infusion section 5, saline or medication can be injected into the blood vessel during radiofrequency ablation. The infusion of saline can effectively prevent carbonization of the ablation site and achieve combined drug and device treatment.

[0092] Example 3

[0093] like Figure 10 As shown, this embodiment provides an ablation device, including the arterial ablation electrode 6, the electrode generating device 7, and the liquid container 8 described in Embodiment 2 above. The arterial ablation electrode 6 is connected to the electrode generating device 7 via a cable connector, and the arterial ablation electrode 6 is connected to the liquid container 8 via an injection tube a.

[0094] Specifically, the electrode generating device 7 transmits radiofrequency energy to the electrode treatment structure via a cable connector, thereby performing radiofrequency ablation on the affected area on the inner wall of the blood vessel. The liquid container 8 injects saline or medication into the blood vessel during radiofrequency ablation via its injection section.

[0095] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. An electrode treatment structure, characterized in that, It includes at least one electrode part, at least one connecting section a, at least one connecting section b, and at least one temperature measuring part, wherein: The electrode portion includes a front end and a rear end that are respectively embedded inside the connecting segment a and the connecting segment b, and an electrode portion that is respectively connected to the front end and the rear end, wherein a portion of the electrode portion is made of an elastic material; The temperature measuring unit is connected to the electrode unit and collects the temperature value of the electrode unit when it is in working condition; Both connecting segment a and connecting segment b are connected to an external pulling part. Connecting segment a is a fixed end, and connecting segment b is a moving end. Under the action of tension, connecting segment b moves horizontally toward the position of connecting segment a. A part of the electrode part undergoes radial bending centered on the axis (AA) as the connecting segment b moves, forming an outwardly convex arc-shaped bending structure. The curvature of the electrode part is proportional to the moving distance of the connecting segment.

2. The electrode treatment structure according to claim 1, characterized in that, The electrode section includes an electrode support and multiple electrode assemblies. The electrode support includes an annular support embedded in the front end face of the connecting segment a, and multiple deformable parts connected to the annular support and arranged in a circumferential direction around the axis (AA). The front end of each deformable part is embedded in the rear end face of the connecting segment b, and the electrode assembly is sleeved on the outside of the deformable part.

3. The electrode treatment structure according to claim 2, characterized in that, The electrode assembly includes an electrode point, a first insulating sleeve, and a second insulating sleeve. The electrode point, the first insulating sleeve, and the second insulating sleeve are all sleeved on the outside of the deformed part. The first insulating sleeve and the second insulating sleeve are respectively located on both sides of the electrode point.

4. The electrode treatment structure according to claim 3, characterized in that, A portion of the temperature measuring unit is placed inside the first insulating sheath, and the front end of the temperature measuring unit is connected to the electrode point to collect the temperature value of the electrode point when it is in working condition.

5. An ablation electrode for arteries, characterized in that, It includes a housing portion, a pull portion, an electrode transmission portion, a liquid injection portion, and at least one electrode treatment structure as described in any one of claims 1 to 4, wherein: The electrode transmission section is connected to the electrode section through the temperature measuring section, and provides radio frequency energy to the electrode section; The pulling part includes a push-pull button, a wire, and a wire end cap. The wire end cap is fixed to the front end face of the connecting segment a. After the front end of the wire passes through the interior of the connecting segment b and the connecting segment a in sequence, it is connected to the wire end cap. The rear end of the wire is connected to the push-pull button. The push-pull button controls the wire and the wire end cap to drive the connecting segment b to move horizontally toward the position of the connecting segment a. A part of the electrode part undergoes radial bending centered on the axis (AA) along the movement of the connecting segment b, forming an outwardly convex arc-shaped bending structure that contacts the inner wall of the blood vessel.

6. The ablation electrode for arteries according to claim 5, characterized in that, The pulling part further includes a limiting segment a and a limiting segment b, wherein the limiting segment a and the limiting segment b are both sleeved on the outside of the wire drawing. The limiting segment a is located near the front end of the connecting segment a, and a part of the limiting segment b is placed inside the connecting segment b, while the other part is located on the rear side of the connecting segment b and faces the front end of the limiting segment a. The wire moves backward, and when the limiting segment a contacts the limiting segment b, the curvature of the electrode portion is limited.

7. The ablation electrode for arteries according to claim 5, characterized in that, The electrode transmission section includes a cable connector, a wire, a push-button switch, and an electrode transmission conduit. The cable connector is connected to the push-button switch via the wire, and the electrode transmission conduit is connected to both the push-button switch and the connecting section b. When the push-button switch is in the ON state, radio frequency energy is sequentially input into each of the electrode sections through the electrode transmission conduit and the connecting section b.

8. The ablation electrode for arteries according to claim 5, characterized in that, The housing portion includes a handle outer shell, a first protective sleeve, a second protective sleeve, a sealing assembly, a spring guide tube, and a sleeve, wherein: The sealing assembly is fixed inside the handle housing, and the end of the first sheath is placed inside the handle housing, located at the front end of the sealing assembly; A portion of the sleeve is located sequentially inside the spring guide tube, the second sheath, and the first sheath; a portion of the wire drawing and a portion of the temperature measuring part are both located inside the sleeve. The ends of the spring conduit and the second sheath are embedded inside the sealing assembly, and the sleeve penetrates the interior of the sealing assembly; The front end of the second sheath extends to the outside of the first sheath, and the end of the connecting segment a is embedded inside the second sheath.

9. The ablation electrode for arteries according to claim 7, characterized in that, The injection section includes an injection tube a, an injection tube b, and an injection channel, wherein: The front end of the injection tube a is placed inside the handle housing; The injection tube b is placed inside the handle housing, its end is placed inside the injection tube a, and its front end is placed inside the sealing assembly; A portion of the injection channel is formed by the gap between the sleeve and the spring conduit.

10. An ablation device, characterized in that, The device includes an arterial ablation electrode, an electrode generating device, and a liquid container as described in any one of claims 5 to 9, wherein the arterial ablation electrode is connected to the electrode generating device via a cable connector, and the arterial ablation electrode is connected to the liquid container via an injection tube a.

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