Radio frequency ablation electrode

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 utility model relates to medical equipment technical field, concretely relates to a radiofrequency ablation electrode of ablation range adjustable. BACKGROUND

[0002] Radiofrequency ablation technology is mainly using radiofrequency ablation instrument to generate high frequency radio frequency current, through radiofrequency ablation electrode puncture to tumor site, radio frequency current is guided to lesion tissue, and the inside polarity molecule of tissue is made high speed movement under the action of radio frequency current, and the heat is generated by mutual friction, and the rapid heating is carried out in the tumor, and the cancer cell protein is denatured and coagulated, leads to irreversible necrosis, thereby reaches the purpose of killing tumor cell.

[0003] At present, the electrode length of radiofrequency ablation electrode is usually fixed, so the ablation position of electrode in lesion tissue cannot be adjusted according to the size of tumor, and the ablation effect is influenced.CN202122355239.9 discloses an electrode that can adjust the size of the ablation area at the front end, adopts a knob to adjust the size of the ablation area, and a spring damping piece is sleeved on the shaft, so that the knob becomes a damping knob, so that after the electrode length is adjusted in place, the electrode length can be effectively prevented from changing again during the entire operation process.

[0004] At present, the traditional ablation needle needs to increase a fixator to fix the ablation needle to ensure that the ablation needle can be perpendicular to the lesion position to ablate the lesion tissue in the process of positioning the lesion under the assistance of CT and other imaging equipment.CN202122355239.9 discloses an ablation needle ablation area size adjustment method that needs to be adjusted with both hands to offset the adverse factors such as ablation needle position deviation that may be caused during the adjustment of the ablation area size.

[0005] This design needs to be operated with both hands, which is inconvenient. SUMMARY

[0006] The utility model wants to solve the technical problem of providing a radiofrequency ablation electrode that can adjust the ablation range during operation, which is simple and convenient to operate.

[0007] In order to solve the above technical problems, the technical scheme one provided by the utility model is: a radiofrequency ablation electrode, comprising

[0008] The electrode needle is provided with a handle with a sliding slot at the proximal end; the electrode needle is provided with an insulating sleeve, the insulating sleeve extends from the proximal end to the distal end of the electrode needle, and the electrode needle has a preset treatment range; the stroke button comprises a supporting part in sliding cooperation with the sliding slot, and a damping connecting part in cooperation with the insulating sleeve; the stroke button slides in the sliding slot to adjust the preset treatment range.

[0009] The beneficial effect of the technical scheme one of the utility model is that the stroke button is designed on the handle, the distance between the insulating sleeve and the front end needle of the electrode needle can be adjusted by moving the stroke button forward and backward with the thumb, the length of the electrode needle exposed outside is changed, and thus the preset ablation treatment range is adjusted.

[0010] The further improvement of the above technical scheme is that a through hole one is arranged between the supporting part and the damping connecting part, a guide rail is further arranged on the handle, and the guide rail passes through the through hole one, so that the stability of the stroke button in the sliding process is increased when the length of the front end treatment part of the electrode is adjusted.

[0011] The further improvement of the above technical scheme is that the damping connecting part comprises a clamping arm, a damping piece is arranged in the clamping arm, a through hole two is arranged in the middle, the electrode needle passes through the through hole two, the preset pressure is formed between the damping piece and the insulating sleeve, and the pressure is greater than the sliding friction force between the insulating sleeve and the electrode needle.

[0012] The further improvement of the above technical scheme is that the damping piece is made of silica gel material.

[0013] The further improvement of the above technical scheme is that a scale is further arranged around the sliding groove, and the ablation range size is accurately controlled. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the radio frequency ablation electrode structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the radio frequency ablation electrode structure from the utility model.

[0016] Figure 3 It is a schematic diagram of the stroke button structure of the radio frequency ablation electrode of the utility model.

[0017] Figure 4 It is a schematic diagram of the damping piece structure of the radio frequency ablation electrode of the utility model.

[0018] 1-electrode needle, 2-near end, 3-far end, 4-handle, 5-insulating sleeve, 6-treatment range, 7-stroke button, 8-sliding groove, 9-through hole one, 10-guide rail, 11-electric component, 12-water circulation component, 13-scale, 71-supporting part, 72-damping connecting part, 81-clamping arm, 82-damping piece, 83-through hole two. DETAILED DESCRIPTION

[0019] In order to further understand the content of the utility model, the utility model is described in detail below in combination with the drawings. EMBODIMENT

[0020] The utility model discloses a technical scheme one provides a kind of radiofrequency ablation electrode as shown in Figures 1-4 It is configured as the carrier of energy to ablate lesion tissue, and a handle 4 with a sliding slot is provided on the proximal end 2 of the electrode needle 1;An insulating sleeve 5 is provided outside the electrode needle 1, which extends from the proximal end 2 to the distal end 3 of the electrode needle 1, and makes the electrode needle 1 have a preset treatment range 6.

[0021] As shown in Figure 3 The stroke button 7 in the embodiment includes a support part 71 that is in sliding cooperation with the sliding slot 8, and a damping connection part 72 that cooperates with the insulating sleeve 5;In the embodiment, the stroke button 7 slides in the sliding slot 8, adjusts the distance between the insulating sleeve 5 and the needle head of the electrode needle 1, and thus adjusts the preset treatment range 6.

[0022] A through hole 9 is provided between the support part 71 and the damping connection part 72 in the embodiment, and a guide rail 10 is further provided on the handle 4, which passes through the through hole 9, so that the stability of the stroke button 7 during sliding can be increased when adjusting the length of the electrode front end treatment part.

[0023] The damping connection part 72 in the embodiment includes a clamping arm 81, a damping member 82 is provided in the clamping arm 81, the damping member 82 is a cylinder, a through hole 83 is provided in the middle, the electrode needle 1 passes through the through hole 83, so that a preset pressure is formed between the damping member 82 and the insulating sleeve 5, which is greater than the sliding friction between the insulating sleeve 5 and the electrode needle 1.

[0024] The damping member 82 in the embodiment can also adopt other shapes, such as cuboid, square and irregular shape, etc.

[0025] The clamping arm 81 in the embodiment has four, which are designed symmetrically in pairs, for clamping the damping member 82.

[0026] The damping member 82 in the embodiment adopts silica gel material, which has elasticity and friction.

[0027] The sliding slot 8 in the embodiment is further provided with a scale 13 around the periphery, which facilitates accurate control of the size of the ablation range.

[0028] As shown in Figure 1 The handle 4 of the radiofrequency ablation electrode in the embodiment is further provided with an electrical assembly 11 and a water circulation assembly 12. The electrical assembly 11 is used to connect with the equipment, and is used to provide the energy required for ablation, and the water circulation assembly 12 is used to provide cooling water to cool the needle rod.

[0029] The technical solution provided in this embodiment is applicable to monopolar or bipolar radiofrequency needles, such as the single-needle monopolar radiofrequency ablation electrode needle and the single-needle bipolar radiofrequency ablation electrode needle disclosed in CN203677247U. Since these are existing technologies, they will not be described in detail here.

[0030] like Figures 1-4 As shown, the radiofrequency ablation electrode provided by this utility model adjusts the ablation treatment range using the following method: A travel button 7 is installed on the handle 4 of the radiofrequency ablation electrode. Holding the ablation needle handle 4 with one hand and placing the thumb on the travel button 7, the travel button 7 is moved back and forth by the thumb. This adjusts the distance between the insulating sleeve 5 and the tip of the electrode needle 1, changing the exposed length of the electrode needle 1, thereby adjusting the preset ablation treatment range. During the back-and-forth movement of the travel button 7, a force is applied forward to the travel button 7, while an opposing force is generated to counteract the force applied to the travel button 7, preventing the ablation needle from shifting position.

[0031] like Figures 1-4 As shown, the radiofrequency ablation electrode provided in this embodiment is suitable for mass production and saves costs in order to facilitate the installation of the radiofrequency ablation electrode.

[0032] The radiofrequency ablation electrode provided in this embodiment can be installed using the following method, which includes:

[0033] The insulating sleeve 5 is installed in the damping component 82 through the through hole 2 83;

[0034] Install the damping element 82 inside the travel button 7;

[0035] Mount the travel button 7 onto the guide rail 10 through the through hole 9;

[0036] Install electrode needle 1 inside insulating sleeve 5;

[0037] Finally, the travel button is installed inside the handle 4.

[0038] The above embodiments are only for illustrating the technical concept of this utility model and should not be used to limit the protection scope of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the protection scope of this utility model.

Claims

1. A radiofrequency ablation electrode, characterized in that: include An electrode needle, wherein the proximal end of the electrode needle is provided with a handle with a sliding groove; The electrode needle is provided with an insulating sleeve that extends from the proximal end to the distal end of the electrode needle, thereby giving the electrode needle a preset treatment range. The travel button includes a support part that slides in conjunction with the slide groove, and a damping connection part that cooperates with the insulating sleeve; the travel button slides within the slide groove to adjust the preset treatment range.

2. The radiofrequency ablation electrode according to claim 1, characterized in that: A through hole is provided between the support part and the damping connection part, and a guide rail is also provided on the handle, the guide rail passing through the through hole.

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

4. The radiofrequency ablation electrode according to claim 3, characterized in that: The damping element is made of silicone.

5. The radiofrequency ablation electrode according to claim 1, characterized in that: The groove is also marked with graduations.

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