Water-cooling adjustable ablation electrode

Abstract

The water-cooling adjustable ablation electrode comprises a handle, an adjusting wheel, a screw sliding block, a water box, a needle rod, an insulating sleeve, an inner tube, a temperature sensor, a cooling water tube, a cable and a plug, the handle is of a hollow structure, the adjusting wheel is installed in the handle, the screw sliding block is installed in the handle, the needle rod penetrates through the hollow structure of the screw sliding block, and the water box is arranged on the needle rod. One end of the inner tube is located in the needle rod and reaches the front end of the needle rod, and the other end extends out of the needle rod. According to the water-cooling adjustable ablation electrode, the handle, the inner shell, a rubber layer, a buffer block, a buffer spring and the like are arranged to be matched, the anti-falling effect can be achieved, the buffer spring and a reset spring can buffer impact force generated in the falling process, damage to the device is reduced, and the service life is prolonged; and by arranging a rubber layer, secondary protection can be carried out on the equipment, the stability during use is improved, and the equipment is prevented from accidentally falling off or being damaged when being impacted in the use process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a water-cooled adjustable ablation electrode. Background Art

[0002] Radiofrequency ablation technology is completed by radiofrequency ablation electrodes in conjunction with radiofrequency therapeutic devices. The radiofrequency ablation electrodes puncture the diseased tissue. When the radiofrequency current generated by the radiofrequency therapeutic device flows through human tissue, the rapid change of the electromagnetic field causes the polar water molecules in the tissue to move at high speed, generating heat (i.e., endogenous thermal effect), causing the water inside and outside the cells to evaporate, dry, shrink and fall off, resulting in aseptic necrosis, thereby achieving the purpose of treatment.

[0003] As a precision medical device, the water-cooled adjustable ablation electrode does need certain anti-fall and protection measures to ensure its performance and safety. This electrode is usually made of metal and contains many precision electronic components and water cooling systems inside. Therefore, if it is accidentally dropped or subjected to severe impact, it may cause damage to internal parts, circuit failure or leakage of the water cooling system, thereby affecting the normal operation of the equipment and the treatment effect. Therefore, a water-cooled adjustable ablation electrode is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In response to the shortcomings of the prior art, the utility model provides a water-cooled adjustable ablation electrode with advantages such as good protection. It solves the problem that the electrode is usually made of metal and contains many sophisticated electronic components and a water cooling system inside. Therefore, if it is accidentally dropped or subjected to severe impact, it may cause damage to internal parts, circuit failure or leakage of the water cooling system, thereby affecting the normal operation of the equipment and the treatment effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water-cooled adjustable ablation electrode, comprising a handle, an adjusting wheel, a screw slider, a water box, a needle rod, an insulating sleeve, an inner tube, a temperature sensor, a cooling water pipe, a cable, and a plug, wherein the handle is a hollow structure, an adjusting wheel is installed inside the handle, a screw slider is installed inside the handle, the needle rod passes through the hollow structure of the screw slider, one end of the inner tube is located inside the needle rod and reaches the front end of the needle rod, and the other end extends to the outside of the needle rod, an insulating sleeve is fixedly installed on the surface of the needle rod, a temperature sensor is installed inside the inner tube, and a cooling water pipe is fixedly installed on the surface of the handle;

[0006] An inner shell is installed inside the handle, a rubber layer is fixedly installed around the inner wall of the handle, and no less than six buffer blocks are installed on the inner wall of the handle at equal distances, and a buffer spring is fixedly installed on the inner wall of the handle and between every two buffer blocks, and rectangular bars are fixedly installed on the left inner wall of the inner shell and on both sides of the insulating sleeve, and movable grooves are opened inside the two rectangular bars, and fixed rods are fixedly installed inside the two movable grooves, and reset springs are sleeved on the outer surfaces of the two fixed rods, and movable blocks are slidably installed on the outer surfaces of the two fixed rods, and the opposite sides of the two movable blocks are fixedly connected to the surface of the insulating sleeve through a connecting rod.

[0007] Preferably, the adjusting wheel is a hollow structure with two ends passing through and an internal thread is arranged inside.

[0008] Preferably, one end of the screw slider is a screw and the other end is a slider. The screw slider is a hollow structure with two ends passing through. The screw is provided with an external thread, and the external thread of the screw cooperates with the internal thread of the adjusting wheel.

[0009] Preferably, the insulating sleeve is located outside the needle rod and can slide freely along the needle rod, one end of the insulating sleeve is close to the needle head, and the other end is connected to the screw slider.

[0010] Preferably, the insulating sleeve is made of one of polyimide and polytetrafluoroethylene, and the wall thickness of the insulating sleeve is in the range of 0.03 mm-0.1 mm.

[0011] Preferably, the water box is provided with two chambers, a front chamber and a rear chamber, the front chamber is communicated with the inner cavity of the needle rod, and the rear chamber is communicated with the inner cavity of the inner tube; the cooling water pipe is divided into an inlet pipe and an outlet pipe, the inlet pipe is communicated with the front chamber, and the outlet pipe is communicated with the rear chamber.

[0012] Preferably, the cable is a multi-core cable, and one end of the cable is located inside the handle, and the other end extends outside the handle and is connected to the plug, and the core wires in the cable are respectively connected to the needle rod and the lead wires of the temperature sensor, and the core wires at the other end of the cable are respectively connected to each terminal of the plug.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The water-cooled adjustable ablation electrode realizes visual, precise and stepless adjustment of the ablation electrode by setting the coordination between the handle, the adjustment wheel, the slide bar and the water box. After the adjustment is completed, the insulating sleeve will not move due to external force. The current common solution is to set the adjustment wheel at the front end of the handle, which is easy to accidentally touch the adjustment wheel during the operation, causing the electrode length to change. The adjustment wheel of this solution is located in the middle part of the handle to prevent accidental touching.

[0015] 2. The water-cooled adjustable ablation electrode can achieve an anti-fall effect by arranging the cooperation between the handle, inner shell, rubber layer, buffer block and buffer spring. The buffer spring and the reset spring can buffer the impact force generated when falling, reduce damage to the device, and extend the service life. The rubber layer can provide secondary protection for it, increase the stability during use, prevent the device from accidentally falling or being damaged by impact during use, ensure the normal operation of the equipment and the safety of the treatment process, and help medical staff feel more at ease during operation and reduce the psychological pressure caused by worrying about equipment damage. At the same time, this also helps to reduce the cost of equipment maintenance and replacement and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A magnified view of the structure in the middle.

[0019] In the figure: 1. handle; 101. inner shell; 102. rubber layer; 103. buffer block; 104. buffer spring; 105. rectangular bar; 106. movable groove; 107. fixed rod; 108. reset spring; 109. movable block; 110. connecting rod; 2. adjusting wheel; 3. screw slider; 301. screw; 302. slider; 4. water box; 401. front chamber; 402. rear chamber; 5. needle rod; 501. needle; 6. insulating sleeve; 7. inner tube; 8. temperature sensor; 9. cooling water pipe; 901. water inlet pipe; 902. water outlet pipe; 10. cable; 11. plug. 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 1-3The water-cooled adjustable ablation electrode in this embodiment includes a handle 1, an adjusting wheel 2, a screw slider 3, a water box 4, a needle rod 5, an insulating sleeve 6, an inner tube 7, a temperature sensor 8, a cooling water pipe 9, a cable 10, and a plug 11. The handle 1 is a hollow structure, and an adjusting wheel 2 is installed inside the handle 1. A screw slider 3 is installed inside the handle 1. The needle rod 5 passes through the hollow structure of the screw slider 3. One end of the inner tube 7 is located inside the needle rod 5 and reaches the front end of the needle rod 5, and the other end extends to the outside of the needle rod 5. An insulating sleeve 6 is fixedly installed on the surface of the needle rod 5, a temperature sensor 8 is installed inside the inner tube 7, and a cooling water pipe 9 is fixedly installed on the surface of the handle 1.

[0022] It should be noted that the water-cooled adjustable ablation electrode is a medical device used for radiofrequency ablation treatment, which regulates the temperature of the electrode through a water-cooling circulation system; radiofrequency ablation is a technology commonly used to treat arrhythmias and tumors; in this process, the electrode catheter is inserted into the heart or tumor tissue, and the abnormal electrical conduction channels or ectopic beat points are found through electrophysiological mapping technology, and then the electrode is used to generate heat energy to cause the target tissue to dry and necrotic, thereby achieving the therapeutic effect.

[0023] The two ends of the adjusting wheel 2 are cylindrical structures with smaller diameters, and the middle part is a cylindrical structure with larger diameter. The cylindrical structures at the two ends are located inside the handle 1, and the cylindrical structure in the middle part is exposed to a certain height. By turning the part of the adjusting wheel 2 exposed from the handle 1, the adjusting wheel 2 can be freely rotated inside the handle 1. When the adjusting wheel 2 rotates, the internal thread of the adjusting wheel 2 drives the screw slider 3 to move axially along the handle 1.

[0024] The needle rod 5 is a hollow tubular structure, and a needle 501 for puncture is arranged at the front end of the needle rod 5. The needle rod 5 is placed axially along the handle 1. The front end of the needle rod 5 is located outside the handle 1, and the rear end is located inside the handle 1 and is sealed with the water box 4. The needle rod 5 passes through the hollow structure of the screw slider 3.

[0025] The insulating sleeve 6 is located outside the needle rod 5 and can slide freely along the needle rod 5. One end of the insulating sleeve 6 is located near the needle head 501, and the other end is connected to the screw slider 3. When the screw slider 3 moves, it can drive the insulating sleeve 6 to move on the needle rod 5. The movement of the insulating sleeve 6 can change the length of the front end of the needle rod 5 not covered by the insulating sleeve 6.

[0026] The water box 4 is provided with two chambers, a front chamber 401 and a rear chamber 402. The front chamber 401 is communicated with the inner cavity of the needle rod 5, and the rear chamber 402 is communicated with the inner cavity of the inner tube 7; the cooling water pipe 9 is divided into an inlet pipe 901 and an outlet pipe 902. The inlet pipe 901 is communicated with the front chamber 401, and the outlet pipe 902 is communicated with the rear chamber 402. The water enters the front chamber 401 through the inlet pipe 901, passes through the front chamber 401, enters the gap between the needle rod 5 and the inner tube 7 and reaches the front end of the needle rod 5, then turns back to enter the inner tube 7 and flows into the rear chamber 402, and finally flows out through the outlet pipe 902.

[0027] An inner shell 101 is installed inside the handle 1, a rubber layer 102 is fixedly installed around the inner wall of the handle 1, and no less than six buffer blocks 103 are installed on the inner wall of the handle 1 at equal distances. A buffer spring 104 is fixedly installed on the inner wall of the handle 1 and between every two buffer blocks 103. A rectangular strip 105 is fixedly installed on the left inner wall of the inner shell 101 and on both sides of the insulating sleeve 6. A movable groove 106 is opened inside the two rectangular strips 105, and a fixed rod 107 is fixedly installed inside the two movable grooves 106. The outer surfaces of the two fixed rods 107 are sleeved with a reset spring 108, and the outer surfaces of the two fixed rods 107 are slidably installed with movable The movable block 109, the opposite sides of the two movable blocks 109 are fixedly connected to the surface of the insulating sleeve 6 through the connecting rod 110, and the anti-fall effect can be achieved by setting the cooperation between the handle 1, the inner shell 101, the rubber layer 102, the buffer block 103 and the buffer spring 104. The buffer spring 104 and the return spring 108 can buffer the impact force generated when falling, reduce damage to the device, and extend the service life. The rubber layer 102 can be provided to provide secondary protection, increase stability during use, prevent the device from accidentally falling or being damaged by impact during use, and ensure the normal operation of the device and the safety of the treatment process.

[0028] When implementing, follow these steps:

[0029] 1) When in use, the adjusting wheel 2 can be turned to make the adjusting wheel 2 rotate freely in the handle 1 to drive the screw slider 3 to move axially along the handle 1, thereby driving the insulating sleeve 6 to slide on the needle rod 5, so as to adjust the electrode length;

[0030] 2) The impact force generated when the device falls can be buffered by the buffer spring 104 and the return spring 108;

[0031] 3) Reusing the rubber layer 102 for secondary protection;

[0032] 4) Finally, the protective effect is achieved.

[0033] To sum up, the water-cooled adjustable ablation electrode realizes visual and precise stepless adjustment of the ablation electrode by setting the cooperation between the handle 1, the adjusting wheel 2, the sliding bar 3 and the water box 4. After the adjustment is completed, the insulating sleeve 6 will not move due to external force. The current common solution is to set the adjusting wheel 2 at the front end of the handle 1. In this way, it is easy to accidentally touch the adjusting wheel 2 during the operation, causing the electrode length to change. The adjusting wheel 2 of this solution is located in the middle part of the handle 1 to prevent accidental touching.

[0034] In addition, by arranging the cooperation among the handle 1, the inner shell 101, the rubber layer 102, the buffer block 103 and the buffer spring 104, etc., an anti-fall effect can be achieved. The buffer spring 104 and the return spring 108 can buffer the impact force generated when falling, reduce damage to the device, and extend the service life. By providing the rubber layer 102, it can be provided with secondary protection, increase the stability during use, prevent the device from accidentally falling or being damaged by impact during use, ensure the normal operation of the device and the safety of the treatment process, and can also help medical staff to be more at ease during the operation and reduce the psychological pressure caused by worrying about damage to the equipment. At the same time, this also helps to reduce the cost of equipment maintenance and replacement and extend the service life of the equipment.

[0035] 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.

[0036] 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 water-cooled adjustable ablation electrode, comprising a handle (1), an adjusting wheel (2), a screw slider (3), a water box (4), a needle rod (5), an insulating sleeve (6), an inner tube (7), a temperature sensor (8), a cooling water pipe (9), a cable (10), and a plug (11), characterized in that: The handle (1) is a hollow structure, an adjusting wheel (2) is installed inside the handle (1), a screw slider (3) is installed inside the handle (1), the needle rod (5) passes through the hollow structure of the screw slider (3), one end of the inner tube (7) is located inside the needle rod (5) and reaches the front end of the needle rod (5), and the other end extends to the outside of the needle rod (5), an insulating sleeve (6) is fixedly installed on the surface of the needle rod (5), a temperature sensor (8) is installed inside the inner tube (7), and a cooling water pipe (9) is fixedly installed on the surface of the handle (1); An inner shell (101) is installed inside the handle (1), a rubber layer (102) is fixedly installed around the inner wall of the handle (1), no less than six buffer blocks (103) are installed at equal distances on the inner wall of the handle (1), a buffer spring (104) is fixedly installed on the inner wall of the handle (1) and between every two buffer blocks (103), and rectangular strips (105) are fixedly installed on the left inner wall of the inner shell (101) and on both sides of the insulating sleeve (6). The two rectangular bars (105) are each provided with a movable groove (106), the two movable grooves (106) are each fixedly installed with a fixed rod (107), the outer surfaces of the two fixed rods (107) are sleeved with a reset spring (108), the outer surfaces of the two fixed rods (107) are each slidably installed with a movable block (109), and the opposite sides of the two movable blocks (109) are fixedly connected to the surface of the insulating sleeve (6) via a connecting rod (110).

2. The water-cooled adjustable ablation electrode according to claim 1, characterized in that: The regulating wheel (2) is a hollow structure with two ends passing through and an internal thread is arranged inside.

3. The water-cooled adjustable ablation electrode according to claim 1, characterized in that: One end of the screw slider (3) is a screw (301), and the other end is a slider (302). The screw slider (3) is a hollow structure with two ends passing through. The screw (301) is provided with an external thread, and the external thread of the screw (301) cooperates with the internal thread of the adjusting wheel (2).

4. The water-cooled adjustable ablation electrode according to claim 1, characterized in that: The insulating sleeve (6) is located outside the needle rod (5) and can slide freely along the needle rod (5). One end of the insulating sleeve (6) is close to the needle head (501), and the other end is connected to the screw slider (3).

5. The water-cooled adjustable ablation electrode according to claim 1, characterized in that: The insulating sleeve (6) is made of one of polyimide and polytetrafluoroethylene, and the wall thickness of the insulating sleeve (6) is in the range of 0.03 mm to 0.1 mm.

6. The water-cooled adjustable ablation electrode according to claim 1, characterized in that: The water box (4) is provided with two chambers, a front chamber (401) and a rear chamber (402); the front chamber (401) is communicated with the inner cavity of the needle rod (5), and the rear chamber (402) is communicated with the inner cavity of the inner tube (7); the cooling water pipe (9) is divided into an inlet pipe (901) and an outlet pipe (902); the inlet pipe (901) is communicated with the front chamber (401), and the outlet pipe (902) is communicated with the rear chamber (402).

7. The water-cooled adjustable ablation electrode according to claim 1, characterized in that: The cable (10) is a multi-core cable, and one end of the cable (10) is located inside the handle (1), and the other end extends outside the handle (1) and is connected to the plug (11), and the core wires in the cable (10) are respectively connected to the needle rod (5) and the lead wires of the temperature sensor (8), and the core wires at the other end of the cable (10) are respectively connected to the respective terminals of the plug (11).

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