Radio frequency ablation electrode, ablation range adjusting method and mounting method

Abstract

The radiofrequency ablation electrode comprises an electrode needle, and a handle with a sliding groove is arranged at the near end of the electrode needle; an insulating sleeve is arranged outside the electrode needle, and the insulating sleeve extends from the near end of the electrode needle to the far end of the electrode needle, so that the electrode needle has a preset treatment range; the stroke key comprises a supporting part which is in sliding fit with the sliding groove and a damping connecting part which is matched with the insulating sleeve; the stroke key slides in the sliding groove, and the preset treatment range is adjusted. The first technical scheme has the advantages that the stroke key is designed on the handle, the distance between the insulating sleeve and the needle head at the front end of the electrode needle can be adjusted by moving the stroke key back and forth through the thumb, the exposed length of the electrode needle is changed, and therefore the preset ablation treatment range is adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a radio frequency ablation electrode with adjustable ablation range. Background Art

[0002] Radiofrequency ablation technology mainly uses a radiofrequency ablation device to generate high-frequency radiofrequency current, which is then punctured into the tumor site through the radiofrequency ablation electrode to guide the radiofrequency current to the lesion tissue, causing the polar molecules inside the tissue to move at high speed under the action of the radiofrequency current, rubbing against each other to generate heat, and rapidly heating up the tumor, causing the cancer cell proteins to denature and coagulate, leading to irreversible necrosis, thereby achieving the purpose of killing tumor cells.

[0003] At present, the electrode length of radiofrequency ablation electrodes is usually fixed, so the ablation position of the electrode in the lesion tissue cannot be adjusted according to the size of the tumor, which affects the ablation effect. CN202122355239.9 discloses an electrode that can adjust the size of the front ablation area. A knob is used to adjust the size of the ablation area, and a spring damping sheet is set on the rotating shaft, so that the knob becomes a damping knob. In this way, after the electrode length is adjusted in place, it can effectively prevent the electrode length from changing again during the entire operation.

[0004] At present, in the process of locating the lesion with the assistance of imaging equipment such as CT, the traditional ablation needle needs to add a fixator to fix the ablation needle to ensure that the ablation needle can ablate the lesion tissue perpendicular to the lesion position. The adjustment method of the ablation needle ablation area size disclosed in CN202122355239.9 requires the use of two hands to coordinate the adjustment to offset the unfavorable factors such as the ablation needle position deviation that may be caused by the ablation needle in the process of adjusting the ablation area size.

[0005] This design requires both hands to operate, which is inconvenient. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a radiofrequency ablation electrode which can adjust the ablation range during surgery, and the operation is simple and convenient.

[0007] In order to solve the above technical problems, the present invention proposes a technical solution: a radiofrequency ablation electrode, comprising An electrode needle, wherein a handle with a slide groove is provided at the proximal end of the electrode needle; an insulating sleeve is provided outside the electrode needle, and the insulating sleeve extends from the proximal end to the distal end of the electrode needle, and enables the electrode needle to have a preset treatment range; a travel button, comprising a supporting part that slidably cooperates with the slide groove, and a damping connection part that cooperates with the insulating sleeve; the travel button slides in the slide groove to adjust the preset treatment range.

[0008] The beneficial effect of the first technical solution of the present invention is: a travel button is designed on the handle, and the travel button is moved back and forth with the thumb to adjust the distance between the insulating sleeve and the front end needle tip of the electrode needle, thereby changing the exposed length of the electrode needle, thereby adjusting the preset ablation treatment range.

[0009] A further improvement of the above technical solution is that a through hole 1 is provided between the support part and the damping connection part, and a guide rail is also provided on the handle, and the guide rail passes through the through hole 1, so that when adjusting the length of the treatment part at the front end of the electrode, the stability of the travel button during the sliding process can be increased.

[0010] A further improvement of the above technical solution is that the damping connection portion includes a clamping arm, a damping member is provided inside the clamping arm, a second through hole is provided in the middle, and the electrode needle passes through the second through hole, so that a preset pressure is formed between the damping member and the insulating sleeve, and the pressure is greater than the sliding friction between the insulating sleeve and the electrode needle.

[0011] A further improvement of the above technical solution is that: the damping element is made of silicone material.

[0012] A further improvement of the above technical solution is that: a scale is also provided around the slide groove to facilitate precise control and adjustment of the ablation range.

[0013] In order to solve the above technical problems, the second technical solution proposed by the present invention is: a method for adjusting the ablation range of a radiofrequency ablation electrode applied in the first technical solution, the method comprising moving the travel button forward and backward, adjusting the distance between the insulating sleeve and the front end needle tip of the electrode needle, and changing the preset treatment range.

[0014] The beneficial effect of the second technical solution of the present invention is: a travel button is designed on the handle, and the distance between the insulating sleeve and the front end of the electrode needle can be adjusted by moving the travel button forward and backward with the thumb, changing the length of the electrode needle exposed to the outside, thereby adjusting the preset ablation treatment range. In this way, in the process of moving the travel button forward and backward, a force is applied to the travel button forward, and an opposite force is also generated to offset the force applied to the travel button, thereby preventing the ablation needle from shifting.

[0015] In order to solve the above technical problems, the third technical solution proposed by the present invention is: a method for installing a radiofrequency ablation electrode applied in the first technical solution, characterized in that: the method comprises: Installing the insulating sleeve in the damping member through the second through hole; Installing the damping member in the travel button; Install the travel button on the guide rail through through hole 1; Installing the electrode needle in the insulating sleeve; The travel button is installed in the handle.

[0016] The beneficial effect of the third technical solution of the present invention is that the technical solution provided in the present invention is convenient for installing the radiofrequency ablation electrode, is suitable for mass production, and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the radiofrequency ablation electrode structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the top view structure of the radiofrequency ablation electrode of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the radiofrequency ablation electrode travel button of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the radio frequency ablation electrode damping component of the present invention.

[0021] 1-electrode needle, 2-proximal end, 3-distal end, 4-handle, 5-insulating sleeve, 6-treatment range, 7-travel button, 8-slide groove, 9-through hole one, 10-guide rail, 11-electrical component, 12-water circulation component, 13-scale, 71-support part, 72-damping connection part, 81-clamping arm, 82-damping member, 83-through hole two. DETAILED DESCRIPTION

[0022] In order to further understand the content of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. Embodiment 1

[0023] The technical solution 1 of the present invention provides Figure 1-4 A radiofrequency ablation electrode shown includes an electrode needle 1, which is configured as a carrier for providing energy for ablating lesion tissue, and a handle 4 with a slide groove is provided on the proximal end 2 of the electrode needle 1; an insulating sleeve 5 is provided outside the electrode needle 1, and the insulating sleeve 5 extends from the proximal end 2 to the distal end 3 of the electrode needle 1, and enables the electrode needle 1 to have a preset treatment range 6; like Figure 3 As shown, the travel button 7 in this embodiment includes a support portion 71 that slides with the slide groove 8, and a damping connection portion 72 that cooperates with the insulating sleeve 5; in this embodiment, the travel button 7 slides in the slide groove 8 to adjust the distance between the insulating sleeve 5 and the needle tip of the electrode needle 1, thereby adjusting the preset treatment range 6.

[0024] In this embodiment, a through hole 9 is provided between the support portion 71 and the damping connection portion 72, and a guide rail 10 is also provided on the handle 4. The guide rail 10 passes through the through hole 9, so that when adjusting the length of the treatment part at the front end of the electrode, the stability of the travel button 7 during the sliding process can be increased.

[0025] The damping connection part 72 in this embodiment includes a clamping arm 81, and a damping member 82 is arranged in the clamping arm 81. The damping member 82 is a cylinder with a second through hole 83 in the middle. The electrode needle 1 passes through the second through hole 83, so that a preset pressure is formed between the damping member 82 and the insulating sleeve 5, and the pressure is greater than the sliding friction between the insulating sleeve 5 and the electrode needle 1.

[0026] Obviously, the damping member 82 in this embodiment may also be in other shapes, such as a rectangular parallelepiped, a cube, or an irregular shape.

[0027] In this embodiment, there are four clamping arms 81 , which are designed symmetrically in pairs and are used to clamp the damping member 82 .

[0028] The damping member 82 in this embodiment is made of silicone material, which has elasticity and friction.

[0029] In this embodiment, a scale 13 is also provided around the slide groove 8 to facilitate accurate control and adjustment of the ablation range.

[0030] like Figure 1 As shown, the radiofrequency ablation electrode handle 4 in this embodiment is also equipped with an electrical component 11 and a water circulation component 12. The electrical component 11 is used to connect with the device to provide energy required for ablation, and the water circulation component 12 is used to provide cooling water to cool the needle rod.

[0031] The technical solution provided in this embodiment is applicable to monopolar or bipolar radiofrequency needles, for example, the single-needle monopolar radiofrequency ablation electrode needle and the single-needle bipolar radiofrequency ablation electrode needle disclosed in CN203677247U, which are prior arts and will not be described in detail. Embodiment 2

[0032] like Figure 1-4 As shown, the present invention also provides a method for adjusting the ablation range of a radiofrequency ablation electrode, which is applied to a radiofrequency ablation electrode provided in Example 1. The method uses a travel button 7 installed on the radiofrequency ablation electrode handle 4, and then uses one hand to hold the ablation needle handle 4, with the thumb placed on the travel button 7, and uses the thumb to move the travel button 7 back and forth, so as to adjust the distance between the insulating sleeve 5 and the front needle of the electrode needle 1, and change the length of the electrode needle 1 exposed to the outside, thereby adjusting the preset ablation treatment range. In this way, in the process of moving the travel button 7 back and forth, a force is applied to the travel button 7 forward, and at the same time, an opposite force is generated to offset the force applied to the travel button 7, thereby preventing the ablation needle from shifting. Embodiment 3

[0033] like Figure 1-4 As shown, the first embodiment of the present invention provides a radio frequency ablation electrode, which is suitable for mass production and saves costs in order to facilitate installation of the radio frequency ablation electrode.

[0034] The present invention also provides a method for installing a radiofrequency ablation electrode, which is applied to a radiofrequency ablation electrode provided in the first embodiment. The method comprises: Install the insulating sleeve 5 in the damping member 82 through the second through hole 83; The damping member 82 is installed in the travel button 7; Install the travel button 7 on the guide rail 10 through the through hole 9; Install the electrode needle 1 in the insulating sleeve 5; Finally, the travel button is installed in the handle 4.

[0035] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A radiofrequency ablation electrode, characterized in that: include An electrode needle, wherein a handle with a slide groove is provided at the proximal end of the electrode needle; An insulating sleeve is disposed outside the electrode needle, and the insulating sleeve extends from the proximal end to the distal end of the electrode needle, and enables the electrode needle to have a preset treatment range; The travel button comprises a support portion that slidably cooperates with the slide groove, and a damping connection portion that cooperates with the insulating sleeve; the travel button slides in the slide groove to adjust the preset treatment range.

2. A radiofrequency ablation electrode according to claim 1, characterized in that: A through hole one is provided between the support portion and the damping connection portion, and a guide rail is further provided on the handle, and the guide rail passes through the through hole one.

3. The radiofrequency ablation electrode according to claim 1, characterized in that: The damping connection portion includes a clamping arm, a damping member is arranged inside the clamping arm, and a second through hole is arranged in the middle. The electrode needle passes through the second through hole, so that a preset pressure is formed between the damping member and the insulating sleeve, and the pressure is greater than the sliding friction between the insulating sleeve and the electrode needle.

4. The radiofrequency ablation electrode according to claim 1, characterized in that: The damping element is made of silicone material.

5. The radiofrequency ablation electrode according to claim 1, characterized in that: The periphery of the slide groove is also provided with scales.

6. A method for adjusting the ablation range of a radiofrequency ablation electrode according to claim 1, characterized in that: The method includes moving the travel button forward and backward to adjust the distance between the insulating sleeve and the front end needle of the electrode needle, thereby changing the preset treatment range.

7. A method for installing the radiofrequency ablation electrode according to claim 3, characterized in that: The method comprises, Installing the insulating sleeve in the damping member through the second through hole; Installing the damping member in the travel button; Install the travel button on the guide rail through through hole 1; Installing the electrode needle in the insulating sleeve; The travel button is installed in the handle.

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