Radio frequency ablation electrode and radio frequency ablation device
By designing a retractable ablation electrode and an adjustable handle structure, the problems of existing ablation electrodes being unable to extend or retract and the handle being fixed are solved, thus improving treatment efficacy and operational flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI GUOXUN MEDICAL TECH CO LTD
- Filing Date
- 2024-12-26
- Publication Date
- 2026-04-28
AI Technical Summary
Existing ablation electrodes cannot be extended or retracted, making it impossible to flexibly adjust their length to match the depth of the lesion. This may result in incomplete treatment or damage to normal tissue. Furthermore, the fixed handle structure limits the practicality of the device.
A radiofrequency ablation electrode was designed, comprising a slider, a limit block, a threaded sleeve, a lead screw, and a knob. The lead screw is adjusted by the knob to drive the ablation electrode to extend and retract, and the handle angle is adjusted by a worm gear and a turbine to adapt to different depths and operational needs.
It enables flexible extension and retraction of the ablation electrode and adjustment of the handle angle, improving treatment effectiveness and operational flexibility, ensuring that the ablation electrode can effectively act on the diseased tissue and reduce damage to normal tissue.
Smart Images
Figure CN224166391U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radiofrequency ablation electrode technology, specifically to a radiofrequency ablation electrode and a radiofrequency ablation device. Background Technology
[0002] Radiofrequency ablation (RFA) is a treatment method that utilizes imaging equipment, such as CT or ultrasound, to guide the procedure. One or more thin needles are inserted into the tumor, and heat is applied to the tumor lesion. Because tumor cells are less heat-resistant than normal cells, the RFA kills the tumor cells, causing necrosis and absorption of the tumor tissue, thus eliminating the tumor or reducing its burden. The main principle of this technique is that the electrodes of the RFA needle emit medium-to-high frequency radiofrequency waves, stimulating tissue cells to undergo plasma oscillation. The collision of ions generates heat, reaching a high temperature of 80-100°C, which can effectively and rapidly kill local tumor cells. Simultaneously, it coagulates the surrounding tissue, forming a reaction zone that prevents further blood supply to the tumor and helps prevent tumor metastasis.
[0003] Existing ablation electrodes are non-extendable in the device's position. When the lesion is located at different depths, the non-extendable electrode cannot flexibly change its length to reach the optimal position and match the lesion depth. This may result in the electrode being too long or too short. If it is too long, it may cause unnecessary damage to the surrounding normal tissue. If it is too short, it cannot effectively act on the lesion tissue, resulting in incomplete treatment. Furthermore, the handle of the existing radiofrequency ablation electrode and radiofrequency ablation device is a fixed structure, which cannot be flexibly adjusted according to the surgical operation, thus limiting the practicality of the device.
[0004] Therefore, there is an urgent need for a radiofrequency ablation electrode and a radiofrequency ablation device to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a radiofrequency ablation electrode and a radiofrequency ablation device, which can effectively solve the problems that the ablation electrode in the device cannot be extended or retracted and the handle is a fixed structure.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a radiofrequency ablation electrode and a radiofrequency ablation device, comprising a needle tube, an ablation electrode slidably connected inside the needle tube, a slider fixedly connected to one end of the ablation electrode, limit blocks fixedly connected to both sides of the slider, a threaded sleeve fixedly connected to one side of the slider, a lead screw threadedly connected inside the threaded sleeve, a square box rotatably connected to the right side of the lead screw, a wire fixedly connected to the back of the square box, a radiofrequency ablation controller fixedly connected to one end of the wire, and an adjustment mechanism fixedly connected to the front of the square box.
[0009] As a further embodiment of this utility model, the adjusting mechanism includes a round rod fixedly connected to the front of the square box, a turbine fixedly connected to one end of the round rod, a worm gear meshing above the turbine gear, and a rotating handle fixedly connected to one end of the worm gear, which facilitates rotating the worm gear.
[0010] As a further embodiment of this utility model, a rectangular box is rotatably connected to the outside of the worm gear, and a handle is fixedly connected to the bottom surface of the rectangular box, which facilitates the doctor's hand-holding.
[0011] As a further embodiment of this utility model, a knob is fixedly connected to one end of the lead screw, and an anti-slip sleeve is fitted around the outside of the knob, which facilitates stable rotation of the knob.
[0012] As a further embodiment of this utility model, a set of sliding grooves is provided on the inner side wall of the needle tube, and a set of limiting blocks are slidably connected inside the sliding grooves to facilitate limiting the movement direction of the limiting blocks.
[0013] As a further embodiment of this utility model, a handle sleeve is fitted onto the outside of the handle, and the surface of the handle sleeve is provided with anti-slip texture to facilitate a more stable grip on the handle.
[0014] As a further embodiment of this invention, the other end of the wire is fixedly connected to one end of the ablation electrode to facilitate electrical conduction.
[0015] (III) Beneficial Effects
[0016] This utility model provides a radiofrequency ablation electrode and a radiofrequency ablation device, which have the following beneficial effects:
[0017] 1. The radiofrequency ablation electrode and radiofrequency ablation device, through the setting of slider, limiting block, threaded sleeve, lead screw and knob, the knob is rotated, the knob drives the lead screw to rotate, the lead screw drives the external threaded sleeve to move, and through the slider and limiting block, the ablation electrode is smoothly driven to extend and retract in the needle tube, which makes it easy to adjust the ablation electrode according to the different depths of the lesion to achieve the optimal action position and match the depth of the lesion, thereby improving the treatment effect.
[0018] 2. The radiofrequency ablation electrode and radiofrequency ablation device, through the setting of the adjustment mechanism, rotate the rotating handle, the rotating handle drives the worm gear to rotate, the worm gear drives the meshing turbine below to rotate, and drives the square box on one side to rotate through the round rod, which makes it easy to adjust the angle between the handle and the needle tube according to the actual situation, improving the flexibility of operation. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic cross-sectional view of the needle tube structure of this utility model;
[0021] Figure 3 This is a cross-sectional schematic diagram of the adjustment mechanism of this utility model.
[0022] In the diagram: 1. Needle; 2. Ablation electrode; 3. Slider; 4. Limiting block; 5. Threaded sleeve; 6. Lead screw; 7. Square box; 8. Lead wire; 9. Radiofrequency ablation controller; 10. Adjustment mechanism; 1001. Round rod; 1002. Turbine; 1003. Worm gear; 1004. Rotating handle; 11. Rectangular box; 12. Handle; 13. Knob. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0024] Please see Figures 1 to 3 This utility model provides a technical solution: a radiofrequency ablation electrode and a radiofrequency ablation device, including a needle tube 1, an ablation electrode 2 slidably connected inside the needle tube 1, a slider 3 fixedly connected to one end of the ablation electrode 2, limit blocks 4 fixedly connected to both sides of the slider 3, a threaded sleeve 5 fixedly connected to one side of the slider 3, a lead screw 6 threadedly connected inside the threaded sleeve 5, a square box 7 rotatably connected to the right side of the lead screw 6, a wire 8 fixedly connected to the back of the square box 7, a radiofrequency ablation controller 9 fixedly connected to one end of the wire 8, and an adjustment mechanism 10 fixedly connected to the front of the square box 7.
[0025] Please see Figure 3 The adjustment mechanism 10 includes a round rod 1001 fixedly connected to the front of the square box 7. One end of the round rod 1001 is fixedly connected to a turbine 1002. A worm gear 1003 is engaged above the turbine 1002. One end of the worm gear 1003 is fixedly connected to a rotating handle 1004, which facilitates the rotation of the worm gear 1003.
[0026] Please see Figure 3 The worm gear 1003 is externally rotatably connected to a rectangular box 11, and a handle 12 is fixedly connected to the bottom surface of the rectangular box 11. The handle 12 makes it easy for doctors to hold the device.
[0027] Please see Figure 1 and Figure 2 A knob 13 is fixedly connected to one end of the lead screw 6. An anti-slip sleeve is fitted on the outside of the knob 13 to facilitate stable rotation of the knob 13.
[0028] Please see Figure 2 A set of sliding grooves is provided on the inner side wall of the needle tube 1, and a set of limiting blocks 4 are slidably connected inside the sliding grooves to facilitate limiting the movement direction of the limiting blocks 4.
[0029] Please see Figure 1 The handle 12 is fitted with a handle sleeve, and the surface of the handle sleeve is provided with anti-slip texture to make it easier to grip the handle 12 more stably.
[0030] Please see Figure 1 The other end of the wire 8 is fixedly connected to one end of the ablation electrode 2 to facilitate electrical conduction.
[0031] In this invention, the working steps of the device are as follows:
[0032] First step: When the ablation electrode 2 is used to kill the lesion at high temperature, turn the knob 13. The knob 13 drives the lead screw 6 to rotate. The lead screw 6 drives the external threaded sleeve 5 to move. Through the slider 3 and the limiting block 4, the ablation electrode 2 is smoothly moved and extended in the needle tube 1. This allows the ablation electrode 2 to be adjusted according to the different depths of the lesion to reach the optimal action position and match the depth of the lesion.
[0033] The second step: During the operation, the rotating handle 1004 can be rotated, which drives the worm gear 1003 to rotate. The worm gear 1003 then drives the meshing turbine 1002 below to rotate, and through the round rod 1001, it drives the square box 7 on one side to rotate, which facilitates the adjustment of the angle between the handle 12 and the needle tube 1 according to the actual situation, making the operation easier. The above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. A radiofrequency ablation electrode and a radiofrequency ablation device, comprising a needle (1), characterized in that, The needle tube (1) is slidably connected to an ablation electrode (2). One end of the ablation electrode (2) is fixedly connected to a slider (3). Limit blocks (4) are fixedly connected to both sides of the slider (3). A threaded sleeve (5) is fixedly connected to one side of the slider (3). A lead screw (6) is threadedly connected inside the threaded sleeve (5). A square box (7) is rotatably connected to the right side of the lead screw (6). A wire (8) is fixedly connected to the back of the square box (7). A radiofrequency ablation controller (9) is fixedly connected to one end of the wire (8). An adjustment mechanism (10) is fixedly connected to the front of the square box (7).
2. The radiofrequency ablation electrode and radiofrequency ablation device according to claim 1, characterized in that, The adjustment mechanism (10) includes a round rod (1001) fixedly connected to the front of the square box (7), a turbine (1002) fixedly connected to one end of the round rod (1001), a worm gear (1003) meshing above the turbine gear (1002), and a rotating handle (1004) fixedly connected to one end of the worm gear (1003).
3. The radiofrequency ablation electrode and radiofrequency ablation device according to claim 2, characterized in that, The worm gear (1003) is rotatably connected to a rectangular box (11), and a handle (12) is fixedly connected to the bottom surface of the rectangular box (11).
4. The radiofrequency ablation electrode and radiofrequency ablation device according to claim 1, characterized in that, A knob (13) is fixedly connected to one end of the lead screw (6), and an anti-slip sleeve is fitted around the outside of the knob (13).
5. The radiofrequency ablation electrode and radiofrequency ablation device according to claim 1, characterized in that, The inner wall of the needle tube (1) is provided with a set of sliding grooves, and a set of limiting blocks (4) are slidably connected inside the sliding grooves.
6. The radiofrequency ablation electrode and radiofrequency ablation device according to claim 3, characterized in that, The handle (12) is fitted with a handle sleeve, and the surface of the handle sleeve is provided with anti-slip texture.
7. The radiofrequency ablation electrode and radiofrequency ablation device according to claim 1, characterized in that, The other end of the wire (8) is fixedly connected to one end of the ablation electrode (2).