Natural orifice ablation electrode

Abstract

The utility model relates to a natural orifice ablation electrode, which belongs to the technical field of medical instruments, and comprises a movable block, an expansion adjusting mechanism is arranged in the movable block, the expansion adjusting mechanism comprises three expansion plates movably connected to the outer side of the movable block, one end of each expansion plate is fixedly connected with a guide rod, and the other end of each expansion plate is fixedly connected with a guide rod. And a winding roller is rotationally connected to the interior of the movable block, and a flexible electrode which bypasses the guide rod and is wound on the winding roller is fixedly connected to the outer side of the expansion plate. According to the natural orifice ablation electrode, the expansion plate can be pushed outwards through rotation of the rotary push block, and the expansion plate drives the flexible electrode to expand outwards in an approximately circular form, so that expansion and contraction adjustment of the electrode can be conveniently realized under the condition that an air pump device or a liquid injection device is not used; and the contact surface between the flexible electrode and the inner wall of the natural orifice is increased, so that the treatment of a lesion part is more convenient, and the practical effect of the device is conveniently and effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a natural cavity ablation electrode. Background Art

[0002] The human body has many internal natural cavities, such as different parts of the gastrointestinal tract, many of which have linings or layers; natural body cavities can include the esophagus, small intestine, large intestine, stomach, bile and pancreatic ducts, remnants of weight loss surgery, rectum and anus, etc., and the linings of these natural cavities may be prone to lesions; in some cases, different ablation techniques are used to treat the linings of natural cavities to prevent the spread of lesions to nearby healthy tissue.

[0003] Please refer to a natural cavity ablation electrode with announcement number CN117159130A. In this patent, it is proposed that "the natural cavity ablation electrode catheter in the prior art must rely on an air pump device and a balloon. The air pressure in the balloon is adjusted by controlling the power on and off of the air pump device to control the pressure of the balloon and the natural cavity. After the air pump device is powered on, air is inflated into the balloon. The amount of inflation is controlled by the power-on time. If the air pump device fails, the expansion of the balloon cannot be controlled." The patent has a self-expanding electrode curled and wound on the catheter. In conjunction with the rotating component provided on the catheter, the length of the control winding part and the control pulling part can be changed to facilitate the control of the expansion and contraction of the self-expanding electrode by changing the rotation direction of the rotating component, making the operation simpler and the expansion and contraction of the electrode can be completed without relying on other air pump devices or injection devices.

[0004] However, although the above patent can achieve the adjustment of the expansion and contraction of the self-expanding electrode, it is not convenient to limit the shape of the self-expanding electrode after expansion. The curled and wound self-expanding electrode is not a circular structure after expansion, and there is a gap on the outer wall of the electrode after expansion, which may easily lead to the electrode being unable to completely fit the inner wall of the natural cavity when used in the natural cavity, and easily cause incomplete ablation of the lesion part, affecting the use effect; in view of this, the present application proposes a natural cavity ablation electrode. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a natural cavity ablation electrode, which has the advantages of enabling an expansion plate to drive a flexible electrode to expand outward in a nearly circular form, so as to facilitate adjustment of the expansion and contraction of the electrode, and make the treatment of the diseased part more convenient, thereby facilitating and effectively improving the practical effect of the device, etc., and solves the problem that the natural cavity ablation electrode catheter in the prior art must rely on an air pump device and a balloon, and the air pressure in the balloon is adjusted by controlling the on and off of the air pump device, and the pressure of the balloon fitting the natural cavity is controlled. After the air pump device is powered on, air is inflated into the balloon, and the amount of air inflation is controlled by the power-on time. If the air pump device fails, the problem of being unable to control the expansion of the balloon will result.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a natural cavity ablation electrode, comprising a movable block, wherein an expansion adjustment mechanism is arranged inside the movable block;

[0007] The expansion adjustment mechanism comprises three expansion plates movably connected to the outside of the movable block, one end of the expansion plate is fixedly connected to a guide rod, the inside of the movable block is rotatably connected to a winding roller, and the outside of the expansion plate is fixedly connected to a flexible electrode that bypasses the guide rod and is wound around the winding roller;

[0008] The movable block is internally rotatably connected with a rotating push block for pushing the expansion plate, the bottom of the movable block is fixedly connected with a catheter, the other end of the catheter is fixedly connected with a handle, the movable block is internally provided with an adjusting component for driving the rotating push block to rotate, and the movable block is internally provided with a reset guide component for pulling the expansion plate inward.

[0009] Furthermore, the adjustment component includes a rotating rod rotatably connected to the inside of the movable block, the upper and lower sides of the rotating push block are fixedly connected to transmission gears, and the outer side of the rotating rod is fixedly connected to a driving gear meshing with the transmission gear.

[0010] Furthermore, the adjustment assembly also includes a rotating rod rotatably connected to the inside of the handle, the inside of the catheter is rotatably connected to a torsion tube, and both ends of the torsion tube are fixedly connected to the rotating rod and the rotating rod respectively.

[0011] Furthermore, the reset guide assembly includes a limit rod fixedly connected to the expansion plate on one side close to the movable block, a compression spring is fixedly connected inside the movable block, and the other end of the compression spring is fixedly connected to the limit rod.

[0012] Furthermore, a guide portion is fixedly connected to the top of the movable block, and a movable groove corresponding to the position of the rotating push block is provided inside the movable block.

[0013] Furthermore, a torsion spring is sleeved on the outer side of the winding roller, and the expansion plate is arc-shaped.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The natural cavity ablation electrode can control the rotation of the rotating push block so that it pushes the expansion plate outward, and the expansion plate drives the flexible electrode to move outward, so that the flexible electrode can expand outward in a nearly circular form, thereby facilitating the expansion and contraction adjustment of the electrode without using an air pump device or an injection device, thereby improving the practicality of the device; and because the flexible electrode expands outward evenly in a nearly circular form, the contact surface between the flexible electrode and the inner wall of the natural cavity can be increased during use, making it more convenient to treat the diseased part, thereby further improving the practical effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0017] Figure 2 It is a top sectional view of the movable block of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the winding roller of the utility model.

[0019] In the figure: 1. movable block; 2. expansion plate; 201. guide rod; 3. winding roller; 301. torsion spring; 4. flexible electrode; 5. limit rod; 6. compression spring; 7. rotating push block; 8. transmission gear; 9. rotating rod; 10. driving gear; 11. guide part; 12. catheter; 13. handle; 14. torsion tube; 15. rotating rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 A natural cavity ablation electrode in this embodiment includes a movable block 1, and an expansion adjustment mechanism is arranged inside the movable block 1.

[0022] In this embodiment, the expansion adjustment mechanism includes three expansion plates 2 movably connected to the outside of the movable block 1, one end of the expansion plate 2 is fixedly connected to a guide rod 201, the inside of the movable block 1 is rotatably connected to a winding roller 3, and the outside of the expansion plate 2 is fixedly connected to a flexible electrode 4 that bypasses the guide rod 201 and is wound around the winding roller 3, so that the distance between two adjacent flexible electrodes 4 can be kept unchanged by using the setting of the guide rod 201.

[0023] Among them, a torsion spring 301 is installed on the outer side of the winding roller 3, which makes it convenient for the winding roller 3 to automatically wind up the flexible electrode 4 under the action of the torsion spring 301. The internal rotation of the movable block 1 is connected to a rotating push block 7 for pushing the expansion plate 2. The interior of the movable block 1 is provided with a movable groove corresponding to the position of the rotating push block 7, which makes it convenient to use the movable groove to make the rotating push block 7 rotate inside the movable block 1.

[0024] In this embodiment, a catheter 12 is fixedly connected to the bottom of the movable block 1, and a handle 13 is fixedly connected to the other end of the catheter 12. A guide portion 11 is fixedly connected to the top of the movable block 1, so that the movable block 1 can be conveniently moved in the natural cavity by using the guide portion 11. An adjusting component for driving the rotating push block 7 to rotate is provided inside the movable block 1.

[0025] Among them, the adjustment component includes a rotating rod 9 rotatably connected to the inside of the movable block 1, and the upper and lower sides of the rotating push block 7 are fixedly connected with transmission gears 8. The outer side of the rotating rod 9 is fixedly connected with a driving gear 10 meshing with the transmission gear 8, so that the transmission effect of the driving gear 10 and the transmission gear 8 can be conveniently utilized to make the rotating push block 7 rotate as the rotating rod 9 rotates.

[0026] Among them, the adjustment component also includes a rotating rod 15 rotatably connected to the inside of the handle 13, and the inside of the catheter 12 is rotatably connected to a torsion tube 14, and the two ends of the torsion tube 14 are respectively fixedly connected to the rotating rod 15 and the rotating rod 9, so that the torsion tube 14 can be used to transmit torque, so that the rotating rod 15 can drive the rotating rod 9 to rotate using the torsion tube 14.

[0027] In this embodiment, a reset guide assembly for pulling the expansion plate 2 inward is provided inside the movable block 1, and the reset guide assembly includes a limit rod 5 fixedly connected to the expansion plate 2 on the side close to the movable block 1, and a compression spring 6 is fixedly connected inside the movable block 1, and the other end of the compression spring 6 is fixedly connected to the limit rod 5, so that the elastic force of the compression spring 6 can be used to continuously pull the limit rod 5 toward the inside of the movable block 1, so that the expansion plate 2 can move toward the movable block 1 without external force. The expansion plate 2 is arc-shaped, which is convenient for the expansion plate 2 to fit the outer wall of the movable block 1 when the electrode is contracted.

[0028] The beneficial effects of the above embodiments are:

[0029] The natural cavity ablation electrode can control the rotation of the rotating push block 7 so that it pushes the expansion plate 2 outward, and the expansion plate 2 drives the flexible electrode 4 to move outward, so that the flexible electrode 4 can expand outward in a nearly circular form, thereby facilitating the expansion and contraction adjustment of the electrode without using an air pump device or an injection device, thereby improving the practicality of the device; and because the flexible electrode 4 expands outward evenly in a nearly circular form, the contact surface between the flexible electrode 4 and the inner wall of the natural cavity can be improved during use, making it more convenient to treat the diseased part, thereby facilitating further improving the practical effect of the device.

[0030] The working principle of the above embodiment is:

[0031] The natural cavity ablation electrode can be expanded by rotating the rotating rod 15 when the electrode needs to be expanded, so that the rotating rod 15 can drive the rotating rod 9 to rotate by using the torsion tube 14, so that the rotating rod 9 can drive the three rotating push blocks 7 to rotate synchronously by using the transmission effect of the driving gear 10 and the transmission gear 8, so that the rotating push block 7 can push the expansion plate 2 to move outward, and the expansion plate 2 can drive the flexible electrode 4 to move outward, so that the flexible electrode 4 can be expanded outward uniformly in a nearly circular form, so that the contact surface between the flexible electrode 4 and the inner wall of the natural cavity can be improved when in use, so that the treatment of the diseased part is more convenient.

[0032] During this process, the winding roller 3 can rotate with the movement of the flexible electrode 4, so that the torsion spring 301 accumulates elastic force; when the processing is completed, the expansion plate 2 can be moved toward the movable block 1 by rotating the rotating rod 15 in the opposite direction. At this time, the torsion spring 301 set can drive the winding roller 3 to rotate, thereby realizing the function of automatically winding up the flexible electrode 4, thereby facilitating preparation for the next expansion.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A natural cavity ablation electrode, comprising a movable block (1), characterized in that: An expansion adjustment mechanism is provided inside the movable block (1); The expansion adjustment mechanism comprises three expansion plates (2) movably connected to the outside of the movable block (1); one end of the expansion plate (2) is fixedly connected to a guide rod (201); the inside of the movable block (1) is rotatably connected to a winding roller (3); the outside of the expansion plate (2) is fixedly connected to a flexible electrode (4) that bypasses the guide rod (201) and is wound around the winding roller (3); The movable block (1) is rotatably connected inside with a rotating push block (7) for pushing the expansion plate (2); the bottom of the movable block (1) is fixedly connected with a guide tube (12); the other end of the guide tube (12) is fixedly connected with a handle (13); an adjusting component for driving the rotating push block (7) to rotate is arranged inside the movable block (1); and a resetting guide component for pulling the expansion plate (2) inward is arranged inside the movable block (1).

2. A natural cavity ablation electrode according to claim 1, characterized in that: The adjustment assembly comprises a rotating rod (9) rotatably connected to the inside of the movable block (1); the upper and lower sides of the rotating push block (7) are fixedly connected to transmission gears (8); and the outer side of the rotating rod (9) is fixedly connected to a driving gear (10) meshing with the transmission gear (8).

3. A natural cavity ablation electrode according to claim 2, characterized in that: The adjustment assembly also includes a rotating rod (15) rotatably connected to the inside of the handle (13); the inside of the catheter (12) is rotatably connected to a torsion tube (14), and the two ends of the torsion tube (14) are fixedly connected to the rotating rod (15) and the rotating rod (9) respectively.

4. The natural cavity ablation electrode according to claim 1, characterized in that: The reset guide assembly comprises a limit rod (5) fixedly connected to a side of the expansion plate (2) close to the movable block (1); a compression spring (6) is fixedly connected inside the movable block (1), and the other end of the compression spring (6) is fixedly connected to the limit rod (5).

5. The natural cavity ablation electrode according to claim 1, characterized in that: A guide portion (11) is fixedly connected to the top of the movable block (1), and a movable groove corresponding to the position of the rotating push block (7) is provided inside the movable block (1).

6. The natural cavity ablation electrode according to claim 1, characterized in that: A torsion spring (301) is sleeved on the outer side of the winding roller (3), and the expansion plate (2) is arc-shaped.

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