Fixing support for radiofrequency ablation or freezing
By designing an adjustable foot support structure and a fixing bracket, the problem of deviation of radiofrequency needles or cryotherapy needles during oblique insertion is solved, achieving flexible fixation and accurate puncture, adapting to patients of different body types, and reducing production costs.
Patent Information
- Application Number
- CN202511558215.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-01-02
AI Technical Summary
Existing radiofrequency needles or cryo-needles have heavy tail structures, which can easily cause them to droop when inserted at an angle, leading to deviation in the puncture direction, affecting the surgical outcome and potentially causing harm to the patient.
Design a fixed support including no less than three legs, which are telescopic and rotatable. The length and angle of the legs are adjusted by first and second limiting structures to ensure the directional accuracy of the puncture needle. The support is fixed using structures such as Velcro, universal joints and fixing nuts.
It enables flexible adjustment of the puncture angle under the influence of bone, prevents puncture needle deviation, improves surgical accuracy, reduces production costs, and adapts to different patient body types.
Smart Images
Figure CN121242744A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical auxiliary equipment, in particular to a fixed support for radiofrequency ablation or cryosurgery. BACKGROUND
[0002] Puncture is a surgical operation of using different special needles to puncture into body cavity, organ or blood vessel in a sterile environment to extract liquid, inject medicine, radiofrequency ablation, cryosurgery and other operations to achieve the purpose of auxiliary diagnosis or treatment.
[0003] The position of some nodules (for example, lung nodules) may be affected by bones (for example, ribs) and cannot be vertically punctured. The tail structure of the existing radiofrequency needle or cryosurgery needle is heavy, and when the oblique puncture method is used, the heavy tail is easy to droop and cause angle deviation, thereby affecting the operation effect and even causing harm to the patient. Therefore, we propose a fixed support for radiofrequency ablation or cryosurgery which can be flexibly fixed. SUMMARY
[0004] The purpose of the present application is to provide a fixed support for radiofrequency ablation or cryosurgery which is easy to flexibly fix, and aims to ensure the accuracy of the puncture direction during puncture by guiding and supporting the puncture needle.
[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a fixed support for radiofrequency ablation or cryosurgery, comprising not less than three foot supports, the top of the foot support is provided with a fixed part, the bottom of all the foot supports is not provided on the same straight line; the foot support is provided with a first limiting structure and a second limiting structure, the top of the foot support is a movable end and the bottom is a rotating mounting end, the bottom of the foot support is suitable for being fixed around the puncture site, the foot support is designed to be telescopic, the first limiting structure is suitable for limiting the rotating range of the bottom of the foot support, and the second limiting structure is suitable for limiting the telescopic adjustment of the foot support; the movable ends of the tops of all the foot supports are fixed through the fixed parts, and after being fixed, the tops of all the foot supports form movable positioning holes therebetween; in use, the second limiting structure is in a non-limiting state, the top of the foot support is pulled to change the telescopic and / or rotation of each foot support, so that the connecting line direction of the positioning hole and the puncture site is the same as the puncture direction of the puncture needle, and then the second limiting structure fixes the length of each foot support, and the bottoms of all the foot supports are limited to each other to prevent any foot support from rotating along its bottom, thereby fixing the positioning hole.
[0006] As a preferred, the number of foot supports is three, and the length adjustment range of the foot support is between 4cm and 40cm.
[0007] As a kind of preferred, the fixed part is magic tape, the magic tape is fixedly connected with the top outer wall of the foot prop, and the magic tape is arranged perpendicular to the top surface of the foot prop, the installation direction of the three magic tapes corresponding to the three foot props is same, and the front and back surfaces of the magic tape close to the top of the three foot props are sequentially pasted to be fixed.
[0008] As a kind of preferred, the first limiting structure includes a universal shaft and a universal ball, the universal ball is arranged in the universal shaft, and the top of the universal ball is fixedly connected with the foot prop to limit the rotation of the foot prop within the range of the universal shaft.
[0009] As a kind of preferred, the universal shaft makes the maximum swing angle of the foot prop between 30° and 50°.
[0010] As a kind of preferred, the first limiting structure further includes a fitting part for fixing the universal shaft, the fitting part includes a fitting skeleton and a fixing surface, the universal shaft and the fitting part are fixedly installed, the fixing surface is suitable for fixing the fitting skeleton to the skin of the patient, so that the fixed universal shaft and the fitting skeleton are fixed within the set range of the skin and do not displace and rotate.
[0011] As a kind of preferred, the fixed support for radiofrequency ablation or freezing further includes an auxiliary plate for fixing, the auxiliary plate is arranged in a half-opened mode, the bottom of the auxiliary plate is matched with the body contour of the patient, and the middle part of the auxiliary plate is provided with an opening for exposing the skin of the patient; the top of the auxiliary plate is a plane.
[0012] As a kind of preferred, the fixing surface is one or more of double-sided adhesive tape, plaster and suction cup.
[0013] As a kind of preferred, the foot prop includes a telescopic sleeve rod, the second limiting structure includes a fixing nut arranged on the telescopic sleeve rod, and the fixing nut is suitable for fixing the telescopic sleeve after adjusting the length.
[0014] As a kind of preferred, the foot prop, the first limiting structure and the second limiting structure are all made of plastic material.
[0015] Compared with the prior art, the application has the following advantages: (1) The free adjustment of the foot prop can ensure the formation of an inclined insertion point with the puncture site, which has good applicability in some scenarios, especially when the puncture site is affected by the skeleton and cannot be vertically inserted, the foot prop of the application can be arbitrarily adjusted to cooperate with the specific puncture angle, the puncture needle is guided, and the tail structure of the puncture needle is supported by the top of the foot prop, so that the inclined insertion of the puncture needle is facilitated, and the angle deviation of the puncture needle is prevented.
[0016] (2) All the foot props do not have specific length requirements, which can be selected within a certain interval, and the accuracy of the foot prop is not high, so the production difficulty of the foot prop is small, and the production cost is controllable; and foot props of different specifications can also be mixed; all foot props do not have special requirements for the selection of the landing point, and the skin of the patient is difficult to ensure that the foot prop landing point is in the same plane due to the change of the body contour, so some existing foot props have relatively more restrictions when fixed; the foot prop of the present application does not need to consider too many limiting factors, and can be fixed near / around the puncture site. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a use state diagram of the fixed support in one of the embodiments.
[0018] Figure 2 is Figure 1 is a schematic diagram of the fixed support in the initial fixed state.
[0019] Figure 3 is another use state diagram of the fixed support.
[0020] Figure 4 is a top view of one embodiment of the foot prop.
[0021] Figure 5 is a schematic diagram of the second limiting structure in one of the embodiments.
[0022] Figure 6 is Figure 3 is a top view in the state.
[0023] In the figure: 1, puncture needle; 100, puncture needle tail structure; 2, foot prop; 3, first limiting structure; 31, universal ball; 32, universal shaft; 4, puncture site; 5, fixed part; 6, second limiting structure; 8, fitting part. DETAILED DESCRIPTION
[0024] In the following, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.
[0025] In the description of the present application, it should be noted that for the orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.
[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.
[0027] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0028] Embodiment: Referring to Figures 1 to 6 The present embodiment proposes a fixed support for radio frequency ablation or freezing, mainly comprising at least three foot supports 2, the top of the foot support 2 is provided with a fixed part 5, the bottom of all foot supports 2 is not arranged on the same straight line to form stable support, three foot supports 2 form or are provided with positioning parts at the top for inserting radio frequency needles / freezing needles (hereinafter referred to as puncture needles 1), and the puncture needles 1 are supported by the top of the foot support 2 to prevent the puncture needles 1 from tilting due to lack of support during use.
[0029] When the above-mentioned foot supports 2 are completely arranged on the same straight line, the whole can still be rotated after all the foot supports 2 are brought together, and cannot provide stable fixing effect.
[0030] In order to make the foot prop 2 have flexible adjustment characteristics, the top of the foot prop 2 is a movable end, the bottom of the foot prop 2 is a rotating mounting end, the bottom of the foot prop 2 is suitable for being fixed around the puncture site 4, and the foot prop 2 is designed to be telescopic. After all the movable ends of the foot props 2 are fixed, since the foot props 2 are telescopic, the length of each foot prop 2 can be adjusted, and since the bottom of each foot prop 2 is rotatingly mounted, the position of the top of each foot prop 2 can be freely adjusted by grasping the top of each foot prop 2 and pulling. Since the bottom of each foot prop 2 is arranged around the puncture site 4, after the top of each foot prop 2 is fixed, the top of each foot prop 2 is regarded as a positioning part, the line between the top of each foot prop 2 and the puncture site 4 is the fixed direction of the entire fixed support, and when the puncture needle 1 is inserted, the needle part of the puncture needle 1 can abut against the positioning part of the top of each foot prop 2, and after the puncture needle 1 is completely inserted, the head part of the puncture needle 1 can abut against the positioning part to stably support the puncture needle 1.
[0031] The length adjustment and rotating adjustment of the foot props 2 can realize positioning at different positions, and the foot props 2 also need to be fixed to prevent the length and angle of the foot props 2 from changing after adjustment and losing the fixed effect. Therefore, the foot props 2 are provided with a first limiting structure 3 and a second limiting structure 6, wherein the first limiting structure 3 is suitable for limiting the rotating range of the bottom of each foot prop 2, and the second limiting structure 6 is suitable for limiting the telescopic adjustment of each foot prop 2.
[0032] The movable ends of the tops of all the foot props 2 are fixed by the fixing part 5, and after being fixed, the tops of all the foot props 2 form movable positioning holes (since the puncture needle 1 needs to pass through, the above-mentioned positioning part is actually a hole), the second limiting structure 6 is in a non-limiting state in an initial state, the top of each foot prop 2 is pulled to change the telescopic adjustment and / or rotating adjustment of each foot prop 2, so that the line direction of the positioning hole and the puncture site 4 is the same as the puncture direction of the puncture needle 1, at this time, the fixed direction adjustment is completed, the length adjustment of each foot prop 2 is limited by changing the second limiting structure 6 to a limiting state, so that the length of each foot prop 2 can be fixed, and the bottoms of all the foot props 2 are limited to prevent any foot prop 2 from rotating along the bottom of the foot prop 2, so as to fix the positioning hole.
[0033] In use, the actual position of the nodule can be preset according to the angle on the patient's body contour, then the bottoms of the three foot props are respectively bonded to the skin of the patient, the tops of the three foot props are fixed by the fixing part, then the puncture needle is pre-inserted into the positioning hole, after the three foot props are adjusted to a suitable angle, the length of each foot prop 2 is fixed by the second limiting structure, and after all the foot props 2 are fixed, the puncture operation can be started. The positioning hole can support the puncture needle, and the weight of the tail structure 100 of the puncture needle can be reduced, so as to facilitate the accurate operation of the operator.
[0034] The first limiting structure 3 itself can not be provided with a fixing structure, and the positioning state of the entire support is fixed only by the limiting state of the second limiting structure 6. For example, when the foot support 2 is provided in three, if the bottoms of the three foot supports 2 are not provided on the same straight line, in the state that the tops of the three foot supports 2 are fixed to each other and the lengths of the three foot supports 2 are fixed, if any one foot support 2 wants to rotate to change the direction, the other two foot supports 2 will limit the foot support 2 and prevent the foot support 2 from rotating, so the first limiting structure 3 can only limit the rotation of the bottom of the foot support 2 and limit the rotation range.
[0035] The above-mentioned “not on the same straight line” means that the connecting line of the bottoms of all the foot supports 2 cannot be a straight line.
[0036] Unlike the prior art, in the embodiment, the positioning hole that can move is formed first, the tops of all the foot supports 2 are pulled to the same height or similar height, then the puncture needle 1 can be inserted and preliminarily aligned with the puncture site 4, after the positions of the tops of the foot supports 2 are continuously adjusted to adjust all the foot supports 2 to positions suitable for fixing the puncture angle of the puncture needle 1, the length change of the foot supports 2 is limited by the second limiting structure 6, so as to be fixed. The positioning hole formed in the embodiment is movable and adjustable, and the angle of the positioning hole is adjusted after being fixed. After the tops of all the foot supports 2 are fixed, each foot support 2 can be adjusted in length and angle without the limitation of the second limiting structure 6, and in the adjustment process, the lengths of all the foot supports 2 do not have to change equally, and the change directions of all the foot supports 2 do not have to have a specific rule, for example, like a tripod, each foot has to change equally. The advantage is that: the body contour of a patient is generally not a plane, and the bottoms of the foot supports need to be flexibly adjusted during positioning at different positions, so the foot supports 2 in the embodiment can be adjusted arbitrarily, so as to be conveniently used to fit the body contour of the patient. For example, Figure 3 , Figure 6 As shown in the figure, the structure is similar to a tripod, the three feet are adjusted equally, and the puncture direction is generally perpendicular to the skin of the patient, so the controllability is poor, and the corresponding adjustment of the application can also achieve such an effect.
[0037] Preferably, the number of foot supports 2 is three, and the length adjustment range of the foot support 2 is between 4 cm and 40 cm. The puncture needle 1 corresponding to the application generally needs to penetrate the body surface to the internal organs, so the length of the puncture needle 1 generally used is between 10-20 cm, but there are also some puncture needles 1 such as 5 cm and 30 cm. Therefore, the foot support 2 in the application is appropriately lengthened or shortened, and the length adjustment range is set to be between 4 cm and 40 cm, so as to cover the lengths of most puncture needles 1, thereby ensuring the applicability. The length adjustment range refers to the length adjustment range of different foot supports 2 when different specifications of foot supports 2 are selected, rather than the length adjustment range of the same foot support.
[0038] Each foot support 2 in the process of positioning, the actual positioning length used will be longer than the distance between the positioning part to the puncture site 4, the puncture needle 1 is generally longer than this distance. Although different patients may vary greatly in size, but the same department due to similar surgical approach, the puncture needle 1 used generally fixed length, so you can produce different length according to different departments configuration foot support 2.
[0039] As Figure 4 The fixed part 5 is preferably a magic tape, which is fixedly connected with the top outer wall of the foot support 2, and is arranged perpendicularly to the top surface of the foot support 2. The installation directions of the three magic tapes corresponding to the three foot supports 2 are the same, and the front and back surfaces of the three foot supports 2 near the rear magic tape are sequentially attached to each other for fixation.
[0040] In some embodiments, the fixed part 5 can also be fixed by using a strap, a bandage or the like.
[0041] Referring to Figure 5 A preferred first limiting structure 3 includes a universal shaft 32 and a universal ball 4. The universal ball 4 is arranged in the universal shaft 32, and the top of the universal ball 4 is fixedly connected with the foot support 2, so that the foot support 2 is limited to rotate within the range of the universal shaft 32. The first limiting structure 3 further includes a fitting part 8 for fixing the universal shaft 32. The fitting part 8 includes a fitting framework and a fixing surface (the fixing surface is at the bottom of the fitting framework). The universal shaft 32 and the fitting part 8 are fixedly installed, and the fixing surface is suitable for fixing the fitting framework to the skin of the patient, so that the fixed universal shaft 32 and the fitting framework are fixed within the set range of the skin and do not displace and rotate.
[0042] It is worth mentioning that the fitting framework refers to a structure for stably supporting the bottom of the universal shaft 32, which can be a flexible or rigid fixed framework according to actual needs. For example, in some embodiments, a certain thickness of adhesive tape can also be selected as the fitting framework.
[0043] Of course, the fitting part 8 described above can also be arranged as a suction cup or the like; or when fixed by using an adhesive method, double-sided tape, adhesive plaster or the like can also be flexibly used for fixation. In some embodiments, different foot support bottoms can be simultaneously fixed by using double-sided tape, adhesive plaster or a suction cup or the like, for example, the bottoms of the three foot supports are fixed by using double-sided tape, adhesive plaster and a suction cup respectively.
[0044] The preferred universal shaft makes the maximum swing angle of the foot support between 30° and 50°, and can be further set to 45° or 50°. A larger swing range helps to make multiple foot supports have a larger adjustment range.
[0045] The above universal shaft 32 can be provided with a half opening, and the universal shaft 32 is provided with a tightness adjusting member; the tightness adjusting member is adjusted to be tight after all the foot supports 2 are lengthened to the fixed position, so as to prevent the foot supports 2 from rotating. The tightness adjusting member can assist in reinforcing the foot supports 2 after adjustment. Of course, when the tightness adjusting member is not provided, the above foot supports 2 can also be normally used.
[0046] Another optional first limiting structure 3 includes a flexible connecting part and a movable fixing part 5, the flexible connecting part is fixedly connected with the bottom of the foot support 2, and the flexible connecting part provides a rotating support environment for the foot support 2. After adjustment, the bottom of the foot support 2 is fixed through the movable fixing part 5, so as to ensure a specific angle. This first limiting structure 3 is different from the above first limiting structure 3, and the movable fixing part 5 must be provided. The movable fixing part 5 can be two spaced-apart clamping plates, which clamp the flexible connecting part and the foot support 2 after the adjustment of the foot support 2 is completed, so that the fixing is completed. The above flexible connecting part is only an alternative embodiment and is not specifically shown in the drawings.
[0047] In some embodiments, the fixed support for radiofrequency ablation or cryosurgery further includes an auxiliary plate for fixing, the auxiliary plate is provided with a half opening, the bottom of the auxiliary plate is matched with the body contour of the patient, and an opening for exposing the skin of the patient is formed in the middle of the auxiliary plate; and the top of the auxiliary plate is a plane. The auxiliary plate can be first erected on a specific position on the body of the patient for preliminary fixing, and then the foot support 2 is directly installed on the auxiliary plate, and the adjustment mode remains unchanged. The fixed support arranged in this way can not be directly fixed on the patient, and when it is removed, it can reduce the marks left on the skin of the patient. The bottom of the auxiliary plate can be provided with an arc-shaped notch to be matched with the body contour of the patient, and auxiliary plates of different sizes can be provided according to patients of different body types. Of course, the opening of a corresponding size can also be cut according to each patient for matching. The auxiliary plate can be cut from paperboard, plastic plate and the like, and is only used as a specific solution when it is inconvenient to fix.
[0048] In some embodiments, in order to facilitate the installation of the puncture needle 1 on the top of the foot support 2, the positioning hole can not be formed by the cooperation of the tops of the plurality of foot supports 2, and a limiting ring can be arranged at the top edge of one of the foot supports 2. When the top of the foot support 2 is fixed, the foot support 2 provided with the limiting ring is first adjusted to a preset position, at this time the limiting ring has a direction similar to the puncture direction, then the remaining foot supports 2 are fixed close to the puncture direction, and the adjustment step is simplified. The limiting ring is still located at the top of the foot support 2, and when fixed, the foot support 2 provided with the limiting ring can be arranged close to the puncture direction, the direction of the foot support 2 after being inclined is adjusted to an angle similar to or the same as the puncture direction, and then the other foot supports 2 are fixed. After being fixed, the foot support 2 provided with the limiting ring can be used as a reference for needle insertion, which is convenient for medical staff to operate.
[0049] A preferred foot prop 2 comprises a telescopic sleeve rod, the second limiting structure 6 comprises a fixing nut arranged on the telescopic sleeve rod, the fixing nut is suitable for fixing the telescopic sleeve rod after adjusting the length of the telescopic sleeve rod. The fixing nut can be screwed on the outer rod of the telescopic sleeve rod, and after adjusting, the fixing nut is tightened towards the inner side to press the inner rod, so as to be fixed.
[0050] In some embodiments, the foot prop 2, the first limiting structure 3 and the second limiting structure 6 are all made of plastic material. The fixed support is for external use, and does not need a class II registration certificate. The fixed support has no complex structure, and the support can be made of plastic material, which can reduce the production cost on the one hand; on the other hand, the fixed support can be used as a disposable product. The disposable product has the advantages of convenient use, economy, one person one change, etc. For the manufacturer, the disposable product has the economic benefits of large demand, etc., and is willing to invest in production.
[0051] The above describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.
Claims
1. A fixation bracket for radiofrequency ablation or cryotherapy, characterized in that, It includes at least three foot supports and a corresponding number of fixing parts. The foot supports are provided with a first limiting structure and a second limiting structure. The top of the foot support is a movable end and the bottom is a rotating mounting end. The bottom of the foot support is adapted to be fixed around the puncture site. The foot support is telescopic. The first limiting structure is adapted to restrict the bottom of the foot support from rotating, and the bottoms of all the foot supports are not arranged in a straight line; The second limiting structure is adapted to limit the extension and retraction adjustment of the foot support. The movable ends of the top of all the foot supports are fixed by the fixing part. After fixing, a movable positioning hole is formed between the tops of all the foot supports. When in use, the second limiting structure is in an unrestricted state. Pulling the top of the foot support changes the extension and / or rotation of each foot support so that the line connecting the positioning hole and the puncture site is in the same direction as the puncture direction of the puncture needle. Then, the second limiting structure fixes the length of each foot support. The bottoms of all the foot supports restrict each other to prevent any foot support from rotating along its bottom, thereby fixing the positioning hole.
2. The fixation bracket for radiofrequency ablation or cryotherapy as described in claim 1, characterized in that, The number of foot supports is set to three, and the length of the foot supports can be adjusted between 4cm and 40cm.
3. The fixation bracket for radiofrequency ablation or cryotherapy as described in claim 2, characterized in that, The fixing part is a Velcro fastener, which is fixedly connected to the top outer wall of the foot support. The Velcro fastener is set perpendicular to the top surface of the foot support. The three Velcro fasteners corresponding to the three foot supports are installed in the same direction. After the tops of the three foot supports are close together, the front and back sides of the Velcro fasteners are attached to each other in sequence for fixing.
4. The fixation bracket for radiofrequency ablation or cryotherapy as described in claim 1, characterized in that, The first limiting structure includes a universal joint and a universal ball; the universal ball is disposed in the universal joint, and the top of the universal ball is fixedly connected to the foot support, so that the foot support is limited to rotating within the range of the universal joint.
5. The fixation bracket for radiofrequency ablation or cryotherapy as described in claim 4, characterized in that, The universal joint allows the maximum swing angle of the foot support to be between 30° and 50°.
6. The fixation bracket for radiofrequency ablation or cryotherapy as described in claim 4, characterized in that, The first limiting structure further includes a fitting part for fixing the universal joint. The fitting part includes a fitting frame and a fixing surface. The universal joint and the fitting part are fixedly installed. The fixing surface is adapted to fix the fitting frame to the patient's skin so that the fixed universal joint and the fitting frame are fixed within a set range on the skin and do not shift or rotate.
7. The fixation bracket for radiofrequency ablation or cryotherapy as described in claim 1, characterized in that, It also includes an auxiliary plate for fixation, the auxiliary plate being semi-open, the bottom of the auxiliary plate conforming to the contour of the patient's body, and the middle of the auxiliary plate having an opening for exposing the patient's skin; the top of the auxiliary plate being flat.
8. The fixation bracket for radiofrequency ablation or cryotherapy as described in claim 6, characterized in that, The fixing surface is one or more of double-sided adhesive, adhesive tape, and suction cup.
9. The fixation bracket for radiofrequency ablation or cryotherapy as described in any one of claims 1-8, characterized in that, The foot support includes a telescopic sleeve, and the second limiting structure includes a fixing nut disposed on the telescopic sleeve, the fixing nut being adapted to fix the telescopic assembly after its length has been adjusted.
10. The fixation bracket for radiofrequency ablation or cryotherapy as described in any one of claims 1-8, characterized in that, The foot support, the first limiting structure, and the second limiting structure are all made of plastic.