Ablation device

Abstract

The utility model belongs to the technical field of medical instruments, and discloses an ablation device which comprises a handle, a first clamping piece, a second clamping piece, a first electrode and a second electrode, the first clamping piece comprises a first sleeve and a first clamping arm arranged on the periphery of the first end of the first sleeve, and the second end of the first sleeve is connected with the handle; the second clamping piece comprises a second sleeve and a second clamping arm, the second sleeve slidably penetrates through the first sleeve, the second clamping arm is opposite to the first clamping arm, the first end of the second sleeve extends out of the periphery of the first end of the first sleeve, and the second clamping arm is arranged at the first end of the second sleeve; the first electrode is arranged on the side, facing the second clamping arm, of the first clamping arm. The second electrode is arranged on the side, facing the first clamping arm, of the second clamping arm. According to the ablation device, the first electrode and the second electrode can act on the target tissue in a more concentrated mode, damage to other tissue around the target tissue can be effectively reduced, and safety is better.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to an ablation device. Background Art

[0002] Atrial fibrillation, also known as AF, refers to a condition characterized by an extremely irregular, rapid, and chaotic rhythm resulting from the complete loss of normal atrium contraction and relaxation. AF can lead to ischemic stroke, thromboembolism, heart failure, and other conditions.

[0003] Currently, atrial fibrillation is usually treated surgically with a cryoablation device. The treatment principle is to freeze the target tissue, causing it to freeze necrosis, and ultimately block the electrical conduction pathway to achieve the purpose of treatment. However, cryoablation causes great damage to other surrounding tissues. Utility Model Content

[0004] The purpose of the present invention is to provide an ablation device that can effectively reduce damage to other tissues around the target tissue.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] An ablation device is provided, comprising:

[0007] handle;

[0008] A first clamping member includes a first sleeve and a first clamping arm provided at a periphery of a first end of the first sleeve, wherein a second end of the first sleeve is connected to the handle;

[0009] a second clamping member comprising a second sleeve slidably inserted into the first sleeve and a second clamping arm disposed opposite to the first clamping arm, wherein the first end of the second sleeve extends beyond the first end of the first sleeve, and the second clamping arm is disposed around the first end of the second sleeve;

[0010] A first electrode is provided on a side of the first clamping arm facing the second clamping arm;

[0011] The second electrode is arranged on a side of the second clamping arm facing the first clamping arm.

[0012] Optionally, the first clamping arm includes a first mounting surface, the first electrode is provided on the first mounting surface, and the first electrode is projected in a direction perpendicular to the first mounting surface and is located within the first mounting surface;

[0013] The second clamping arm includes a second mounting surface. The second electrode is provided on the second mounting surface, and the second electrode is projected along a direction perpendicular to the second mounting surface and is located within the second mounting surface.

[0014] Optionally, the first clamping arm includes a first mounting surface, and the first electrode is attached to the first mounting surface;

[0015] The second clamping arm includes a second mounting surface, and the second electrode is attached to the second mounting surface.

[0016] Optionally, the cross-sectional shape of the first electrode is set to be rectangular or semicircular;

[0017] The cross-sectional shape of the second electrode is set to be rectangular or semicircular.

[0018] Optionally, the first clamping arm includes a first mounting surface, a first mounting groove is provided on the first mounting surface, the first electrode is provided in the first mounting groove, and the first electrode is protruded from the first mounting surface;

[0019] The second clamping arm includes a second mounting surface, a second mounting groove is provided on the second mounting surface, the second electrode is provided in the second mounting groove, and the second electrode is protruded from the second mounting surface.

[0020] Optionally, the cross-sectional shape of the first electrode is set to be circular, and the cross-sectional shape of the first mounting groove is set to be a large cut circle;

[0021] The cross-sectional shape of the second electrode is set to be circular, and the cross-sectional shape of the second mounting groove is set to be a large circular shape.

[0022] Optionally, the first clamping arm and the second clamping arm are configured as arc-shaped structures.

[0023] Optionally, the central angle of the first clamping arm ranges from 90° to 180°;

[0024] And / or the central angle of the second clamping arm is in the range of 90°-180°.

[0025] Optionally, an energy generator is further included, and the first electrode and the second electrode are both electrically connected to the energy generator.

[0026] Optionally, the energy generator includes at least one of a pulse generator and a radio frequency generator.

[0027] Beneficial effects of the utility model:

[0028] The ablation device provided by the present invention first operates by manipulating the second sleeve to slide relative to the first sleeve via a handle, so that the first clamping arm (with the first electrode) and the second clamping arm (with the second electrode) clamp the target tissue. Then, electrical energy is transmitted to the first and second electrodes to ablate the target tissue, achieving the therapeutic purpose. Compared to cryoablation, because the first electrode is located on the side of the first clamping arm facing the second clamping arm, and the second electrode is located on the side of the second clamping arm facing the first clamping arm, the first and second electrodes can more closely target the target tissue, effectively reducing damage to other tissues surrounding the target tissue and providing greater safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the ablation device provided by the present invention on the handle;

[0030] Figure 2 This is a schematic diagram of the local structure of the ablation device provided by the present invention from one perspective;

[0031] Figure 3 This is a schematic diagram of the corresponding relationship between the energy generator and the electrodes provided by the utility model;

[0032] Figure 4 This is a cross-sectional view of an embodiment of the first electrode provided by the present invention installed on the first clamping arm;

[0033] Figure 5 This is a cross-sectional view of another embodiment of the first electrode provided by the present invention installed on the first clamping arm;

[0034] Figure 6 This is a cross-sectional view of another embodiment of the first electrode provided by the present invention installed on the first clamping arm;

[0035] Figure 7 This is a schematic diagram of the local structure of the ablation device provided by the present invention from another perspective.

[0036] In the picture:

[0037] 100. Handle; 110. Handle housing; 120. Drive device;

[0038] 200, first clamping member; 210, first sleeve; 220, first clamping arm; 221, first mounting surface; 2211, first mounting groove;

[0039] 300, second clamping member; 310, second sleeve; 320, second clamping arm; 321, second mounting surface;

[0040] 400. First electrode;

[0041] 500, second electrode;

[0042] 600, energy generator; 610, pulse generator; 611, first wire; 620, radio frequency generator; 621, second wire; 622, second connector. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0044] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0047] Reference Figure 1 and Figure 2 As shown, this embodiment provides an ablation device, including a handle 100 , a first clamping member 200 , a second clamping member 300 , a first electrode 400 and a second electrode 500 .

[0048] Specifically, the first clamping member 200 includes a first sleeve 210 and a first clamping arm 220 provided at the first end periphery of the first sleeve 210, and the second end of the first sleeve 210 is connected to the handle 100; the second clamping member 300 includes a second sleeve 310 slidably passed through the first sleeve 210 and a second clamping arm 320 provided opposite to the first clamping arm 220, the first end of the second sleeve 310 extends out of the first end of the first sleeve 210, and the second clamping arm 320 is provided at the first end periphery of the second sleeve 310; the first electrode 400 is provided on the side of the first clamping arm 220 facing the second clamping arm 320; the second electrode 500 is provided on the side of the second clamping arm 320 facing the first clamping arm 220.

[0049] In this embodiment, the second cannula 310 is first manipulated to slide relative to the first cannula 210 via the handle 100, so that the target tissue is clamped by the side of the first clamping arm 220 provided with the first electrode 400 and the side of the second clamping arm 320 provided with the second electrode 500. Then, electrical energy is transmitted to the first electrode 400 and the second electrode 500 to ablate the target tissue, achieving the therapeutic purpose. Compared to cryoablation, because the first electrode 400 is located on the side of the first clamping arm 220 facing the second clamping arm 320, and the second electrode 500 is located on the side of the second clamping arm 320 facing the first clamping arm 220, the first electrode 400 and the second electrode 500 can more closely target the target tissue, effectively reducing damage to other tissues surrounding the target tissue and providing greater safety.

[0050] For example, the first clamp arm 220 and the second clamp arm 320 may be made of insulating and heat-insulating materials, which effectively prevent the first clamp arm 220 and the second clamp arm 320 from causing thermal damage or electrical damage to non-ablated tissues, thereby improving safety.

[0051] For example, the first clamping arm 220 and the first sleeve 210 may be arranged vertically or at other angles, which is not limited in this application.

[0052] For example, the second clamping arm 320 and the second sleeve 310 can be arranged vertically or at other angles, which is not limited in this application.

[0053] It can be understood that the electric energy delivered to the first electrode 400 and the second electrode 500 can be at least one of pulse electric energy and radio frequency electric energy.

[0054] In this embodiment, referring to Figure 1 and Figure 3 As shown, the ablation device further includes an energy generator 600 , and the first electrode 400 and the second electrode 500 are both electrically connected to the energy generator 600 , and electrical energy is transmitted to the first electrode 400 and the second electrode 500 through the energy generator 600 to achieve the purpose of treatment.

[0055] Specifically, the energy generator 600 includes at least one of a pulse generator 610 and a radio frequency generator 620. The pulse generator 610 transmits pulsed electrical energy to the first electrode 400 and the second electrode 500, and the radio frequency generator 620 transmits radio frequency electrical energy to the first electrode 400 and the second electrode 500 to achieve the purpose of treatment.

[0056] Illustratively, the first electrode 400 and the second electrode 500 are electrically connected to a first wire 611 that can be electrically connected to the pulse generator 610. The first wire 611 can be detachably connected to the pulse generator 610 via a first connector (not shown) to facilitate maintenance and use.

[0057] Illustratively, the first electrode 400 and the second electrode 500 are electrically connected to a second wire 621 that can be electrically connected to the RF generator 620. The second wire 621 can be detachably connected to the RF generator 620 via a second connector 622 to facilitate maintenance and use.

[0058] In this embodiment, referring to Figure 1 As shown, the handle 100 includes a handle housing 110, a driving device 120 connected to the handle housing 110, and a second end of the second sleeve 310 extends into the handle housing 110 and is connected to the driving device 120. The driving device 120 is used to drive the second sleeve 310 to slide relative to the first sleeve 210. The specific structure of the driving device 120 is prior art and is not the focus of protection of this application, and will not be described in detail here.

[0059] Specifically, the first sleeve 210 includes a sliding channel (not shown) into which the second sleeve 310 slides. More specifically, the first sleeve 210 may also include a first wiring channel (not shown) through which the first wire 611 and / or the second wire 621 connected to the first electrode 400 may extend into the housing.

[0060] Specifically, the second sleeve 310 includes a second wiring channel (not shown), and the first wire 611 and / or the second wire 621 connected to the second electrode 500 can extend into the housing through the second wiring channel.

[0061] For example, the first connector may be provided on the handle housing 110 , or the first wire 611 may be passed through the outside of the handle housing 110 and connected to the first connector.

[0062] Exemplarily, the second connector 622 may be provided on the handle housing 110 , or the second wire 621 may be passed through the outside of the handle housing 110 and connected to the second connector 622 .

[0063] In this embodiment, referring to Figures 4 to 6As shown, the first clamping arm 220 includes a first mounting surface 221, on which a first electrode 400 is disposed. The first electrode 400 is projected perpendicularly to the first mounting surface 221 and positioned within the first mounting surface 221. This facilitates the fixation of the first electrode 400 and ensures that the first electrode 400 acts on a moderate area of the target tissue, effectively preventing the first electrode 400 from causing thermal or electrical damage to non-ablated tissue. The first mounting surface 221 may be a flat surface.

[0064] In one possible implementation, Figure 4 and Figure 5 As shown, the first electrode 400 is attached to the first mounting surface 221 , so that there is a large connection area between the first electrode 400 and the first mounting surface 221 , effectively ensuring a stable and reliable connection between the first electrode 400 and the first clamping arm 220 .

[0065] In another possible embodiment, Figure 6 As shown, a first mounting groove 2211 is provided on the first mounting surface 221, and a first electrode 400 is provided in the first mounting groove 2211, and the first electrode 400 is protruded from the first mounting surface 221, which facilitates the positioning and assembly of the first electrode 400 relative to the first clamping arm 220, and can ensure that the connection between the first electrode 400 and the first clamping arm 220 is stable and reliable.

[0066] In this embodiment, the first electrode 400 is arranged to protrude from the first mounting surface 221, which can increase the area of the first electrode 400 acting on the target tissue and speed up the progress of the ablation surgery.

[0067] For example, the cross-sectional shape of the first electrode 400 includes but is not limited to a rectangular shape, a circular shape or a semicircular shape. Figure 4 and Figure 5 As shown, the cross-sectional shape of the first electrode 400 can be set to a rectangular or semicircular shape to ensure a larger connection area between the first electrode 400 and the first mounting surface 221. Optionally, when the first electrode 400 is set in the first mounting groove 2211, as shown in FIG. Figure 6 As shown, the cross-sectional shape of the first electrode 400 can be set to a circular shape, and the cross-sectional shape of the first mounting groove 2211 is set to a large circular shape. The first mounting groove 2211 with a large circular cross-sectional shape has a limiting effect on the first electrode 400 with a circular cross-sectional shape, that is, preventing the first electrode 400 from detaching from the first mounting groove 2211, ensuring that the connection between the first electrode 400 and the first clamping arm 220 is stable and reliable.

[0068] In this embodiment, referring to Figure 7As shown, the second clamping arm 320 includes a second mounting surface 321, on which a second electrode 500 is disposed. The second electrode 500 is projected perpendicularly to the second mounting surface 321 and positioned within the second mounting surface 321. This facilitates the fixation of the second electrode 500 and ensures that the second electrode 500 acts on a moderate area of the target tissue, effectively preventing the second electrode 500 from causing thermal or electrical damage to non-ablated tissue. The second mounting surface 321 may be a flat surface.

[0069] It can be understood that the first mounting surface 221 and the second mounting surface 321 are arranged relative to each other, and the second sleeve 310 is controlled by the handle 100 to slide relative to the first sleeve 210 so that the first mounting surface 221 and the second mounting surface 321 clamp the target tissue, that is, the first mounting surface 221 and the second mounting surface 321 are in contact with the target tissue, and electrical energy is transmitted to the first electrode 400 and the second electrode 500, so as to achieve the purpose of treatment.

[0070] In a feasible embodiment, the second clamping arm 320 includes a second mounting surface 321, and the second electrode 500 is attached to the second mounting surface 321, so that there is a larger connection area between the second electrode 500 and the second mounting surface 321, effectively ensuring that the connection between the second electrode 500 and the second clamping arm 320 is stable and reliable.

[0071] In another feasible embodiment, a second mounting groove (not shown) is provided on the second mounting surface 321, a second electrode 500 is provided in the second mounting groove, and the second electrode 500 is protruded from the second mounting surface 321, so as to facilitate the positioning and assembly of the second electrode 500 relative to the second clamping arm 320, and ensure that the connection between the second electrode 500 and the second clamping arm 320 is stable and reliable.

[0072] In this embodiment, the second electrode 500 is arranged to protrude from the second mounting surface 321, which can increase the area of the second electrode 500 acting on the target tissue and speed up the progress of the ablation surgery.

[0073] Exemplarily, the cross-sectional shape of the second electrode 500 includes, but is not limited to, a rectangular shape, a circular shape, or a semicircular shape. Optionally, when the second electrode 500 is arranged in contact with the second mounting surface 321, the cross-sectional shape of the second electrode 500 can be set to a rectangular shape or a semicircular shape to ensure that there is a larger connection area between the second electrode 500 and the second mounting surface 321. Optionally, when the second electrode 500 is arranged in the second mounting groove, the cross-sectional shape of the second electrode 500 can be set to a circular shape, and the cross-sectional shape of the second mounting groove is set to a large cut-circular shape. The second mounting groove with a large cut-circular cross-sectional shape has a limiting effect on the second electrode 500 with a circular cross-sectional shape, that is, preventing the second electrode 500 from escaping from the second mounting groove, thereby ensuring that the connection between the second electrode 500 and the second clamping arm 320 is stable and reliable.

[0074] In this embodiment, continue to refer to Figure 7 As shown, the first clamp arm 220 and the second clamp arm 320 can be set to an arc-shaped structure so that when the first clamp arm 220 and the second clamp arm 320 clamp the target tissue, the target tissue and the first clamp arm 220 and the second clamp arm 320 fit tightly and evenly, and the ablation effect is good.

[0075] Exemplarily, the central angle of the first clamping arm 220 ranges from 90° to 180°, such as 120°, 135°, or 150°, to ensure that the target tissue and the first clamping arm 220 fit closely and evenly.

[0076] Exemplarily, the central angle of the second clamping arm 320 ranges from 90° to 180°, such as 120°, 135°, or 150°, to ensure that the target tissue and the second clamping arm 320 fit closely and evenly.

[0077] It is understandable that the central angle of the first clamping arm 220 and the central angle of the second clamping arm 320 can be the same or different, and this application does not limit this.

[0078] Of course, the first clamping arm 220 and the second clamping arm 320 can also be configured as a straight line, a wave shape, a broken line shape or other shapes, which is not limited in this application.

[0079] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An ablation device, characterized in that: include: handle (100); A first clamping member (200) comprises a first sleeve (210) and a first clamping arm (220) provided at a first end periphery of the first sleeve (210), wherein a second end of the first sleeve (210) is connected to the handle (100); The second clamping member (300) comprises a second sleeve (310) slidably inserted into the first sleeve (210) and a second clamping arm (320) disposed opposite to the first clamping arm (220), wherein the first end of the second sleeve (310) extends beyond the first end of the first sleeve (210), and the second clamping arm (320) is disposed around the first end of the second sleeve (310); A first electrode (400) is provided on a side of the first clamping arm (220) facing the second clamping arm (320); The second electrode (500) is provided on a side of the second clamping arm (320) facing the first clamping arm (220).

2. The ablation device according to claim 1, wherein: The first clamping arm (220) comprises a first mounting surface (221), the first electrode (400) is provided on the first mounting surface (221), and the first electrode (400) is projected along a direction perpendicular to the first mounting surface (221) and is located within the first mounting surface (221); The second clamping arm (320) comprises a second mounting surface (321), the second electrode (500) is provided on the second mounting surface (321), and the second electrode (500) is projected along a direction perpendicular to the second mounting surface (321) and is located within the second mounting surface (321).

3. The ablation device according to claim 1, wherein: The first clamping arm (220) comprises a first mounting surface (221), and the first electrode (400) is attached to the first mounting surface (221); The second clamping arm (320) comprises a second mounting surface (321), and the second electrode (500) is attached to the second mounting surface (321).

4. The ablation device according to claim 1, wherein: The cross-sectional shape of the first electrode (400) is set to be rectangular or semicircular; The cross-sectional shape of the second electrode (500) is set to be rectangular or semicircular.

5. The ablation device according to claim 1, wherein: The first clamping arm (220) comprises a first mounting surface (221), a first mounting groove (2211) is provided on the first mounting surface (221), the first electrode (400) is provided in the first mounting groove (2211), and the first electrode (400) is protruding from the first mounting surface (221); The second clamping arm (320) comprises a second mounting surface (321), a second mounting groove is provided on the second mounting surface (321), the second electrode (500) is provided in the second mounting groove, and the second electrode (500) is arranged to protrude from the second mounting surface (321).

6. The ablation device according to claim 5, characterized in that The cross-sectional shape of the first electrode (400) is set to be circular, and the cross-sectional shape of the first mounting groove (2211) is set to be a large circular shape; The cross-sectional shape of the second electrode (500) is set to be circular, and the cross-sectional shape of the second mounting groove is set to be a large cut circle.

7. The ablation device according to claim 1, characterized in that The first clamping arm (220) and the second clamping arm (320) are configured as arc-shaped structures.

8. The ablation device according to claim 7, characterized in that: The central angle of the first clamping arm (220) ranges from 90° to 180°; And / or the central angle of the second clamping arm (320) ranges from 90° to 180°.

9. The ablation device according to any one of claims 1 to 8, characterized in that: It also includes an energy generator (600), and the first electrode (400) and the second electrode (500) are both electrically connected to the energy generator (600).

10. The ablation device according to claim 9, characterized in that: The energy generator (600) includes at least one of a pulse generator (610) and a radio frequency generator (620).

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