Smoking type ablation electrode

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a smoke suction type ablation electrode which comprises an electrode tool bit, a movable push rod, a movable smoke suction pipe and a smoke suction pipe shell, the movable smoke suction pipe is arranged in the smoke suction pipe shell, the head of the movable smoke suction pipe is exposed out of the head end of the smoke suction pipe shell, and the movable smoke suction pipe can telescopically move in the smoke suction pipe shell. The electrode tool bit is fixedly connected with the movable push rod, the movable push rod is fixedly connected with the movable smoke suction pipe, and the movable smoke suction pipe can drive the movable push rod to stretch out and draw back so as to adjust the length of the electrode tool bit exposed out of the movable smoke suction pipe. Through the arrangement of the movable push rod, the distance between the electrode tool bit and the movable smoke suction pipe opening can be adjusted in real time, the enough short distance can be achieved when smoke suction is needed so that smoke can be fully collected, the electrode tool bit can stretch out by the enough long distance to be conveniently inserted and pulled when the electrode tool bit needs to be replaced, flexibility is high, and a doctor can conveniently use the electrode tool bit.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a smoking-type ablation electrode. Background Art

[0002] Ablation electrodes are often used for cutting or coagulation in surgical operations. However, the electrode tip produces a lot of smoke when burning tissue at high temperature. The smoke not only affects the vision of medical staff, but also harms the health of patients and medical staff. In order to solve this problem, ablation electrodes with built-in smoking function have emerged on the market.

[0003] In an operation, it is often necessary to switch different blade heads according to the actual needs of the lesion, and adjust the working length of the smoke tube and the blade head. From an economic perspective, the market has further derived ablation electrodes with pluggable and replaceable blade heads and adjustable working lengths of the smoke tube and the blade head.

[0004] During the use of this adjustable ablation electrode, the electrode tip often needs to be exposed a sufficient distance from the smoking tube for hand-held insertion and removal. The ideal distance is generally more than 15 mm, but a distance above 15 mm is not conducive to the collection of smoke. Therefore, the more common distance in clinical practice is about 10 mm, so as to balance the effects of insertion and removal and smoking.

[0005] However, even if a 10mm distance is reserved, when the electrode blade is a thinner tungsten wire, it is still not conducive to pulling out the blade, and the smoking effect is greatly reduced. Utility Model Content

[0006] The utility model aims to provide a smoking-type ablation electrode to solve the above-mentioned technical problems.

[0007] To achieve the above purpose, the specific technical solution of a smoking-type ablation electrode of the utility model is as follows:

[0008] A smoking-type ablation electrode comprises an electrode blade head, a movable push rod, a movable smoking tube and a smoking tube shell. The movable smoking tube is arranged in the smoking tube shell, and the head thereof is exposed from the head end of the smoking tube shell, and can be extended and retracted in the smoking tube shell. The electrode blade head is fixedly connected to the movable push rod, and the movable push rod is fixedly connected to the movable smoking tube. The movable smoking tube can be extended and retracted to drive the movable push rod to extend and retract, thereby adjusting the length of the electrode blade head exposed from the movable smoking tube.

[0009] Furthermore, it comprises a telescopic metal tube, which is arranged in the movable smoking tube, and the end of which is fixedly connected to the electrode cutter head through a cutter head mounting ring, and the telescopic metal tube is used to provide an adjustable range of telescopic extension of the electrode cutter head.

[0010] Furthermore, the movable push rod includes a convex push rod and a concave push rod, the convex push rod and the concave push rod are socketed with each other and have a retractable length, the movable smoking tube is fixedly connected to the head end of the convex push rod, the movable smoking tube moves back and forth to drive the convex push rod to move, the convex push rod retracts and contracts inside the concave push rod during the movement, and drives the concave push rod to move together at the extreme position.

[0011] Furthermore, the telescopic metal tube includes a thin metal rod and a thick metal tube, the thin metal rod is sleeved in the thick metal tube, the cutter head mounting ring is fixedly connected to the end of the concave push rod, and the electrode cutter head is fixedly connected to the head end of the thin metal rod through the cutter head mounting ring.

[0012] Furthermore, a drum spring is fixedly connected to the tail end of the thin metal rod, and the thin metal rod moves in the thick metal tube. The drum spring and the thick metal tube are interference fit to provide resistance, thereby ensuring that the electrode blade head will not loosen during use.

[0013] Furthermore, a damping ring is provided on the outer wall of the movable smoking tube, and the damping ring and the movable smoking tube are also interference fit. The damping ring is fixedly connected to the inner wall of the smoking tube shell, and the damping ring provides resistance so that the movable smoking tube will not loosen during use.

[0014] Furthermore, the end of the thick metal tube is fixedly connected to a conductive tube plug, and the conductive tube plug is used to connect a cable to energize the electrode blade head.

[0015] Furthermore, it comprises a bellows, the tail of the smoking pipe shell is connected to the bellows, and smoke is discharged through the bellows.

[0016] Furthermore, when the movable smoking tube is moved toward the electrode cutter head, the movable smoking tube drives the convex push rod to move. When the convex push rod moves to the farthest point of the concave push rod slot, the movable smoking tube continues to be moved toward the electrode cutter head. The convex push rod drives the concave push rod to move together, and the electrode cutter head also moves with it.

[0017] Furthermore, when the movable smoking tube is moved away from the electrode blade, when the convex push rod moves to the nearest position of the concave push rod slot, the movable smoking tube continues to be moved proximally, the convex push rod will drive the concave push rod to move together, and the movable smoking tube and the electrode blade move away from the electrode blade at the same time.

[0018] The utility model provides a smoking-type ablation electrode with the following advantages: the utility model provides a movable push rod to achieve real-time adjustment of the distance between the electrode blade head and the mouth of the movable smoking tube. When smoking is needed, the distance can be short enough to fully collect smoke. When the electrode blade head needs to be replaced, the electrode blade head can be extended a long enough distance for easy plugging and unplugging. It has high flexibility and is convenient for doctors to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the exploded structure of the smoking-type ablation electrode of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the smoking-type ablation electrode of the utility model;

[0021] Figure 3 It is a schematic diagram of the extended structure of the movable push rod of the utility model;

[0022] Figure 4 This is a schematic diagram of the shortened structure of the movable push rod of the utility model;

[0023] Figure 5 This is a schematic diagram of the telescopic metal tube structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the initial state structure of the ablation electrode of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the utility model when the distance between the electrode blade and the opening of the movable smoking pipe is the shortest;

[0026] Figure 8 This is a schematic diagram of the structure of the electrode cutter head of the utility model extending a long distance;

[0027] Fig. 9 This is a schematic diagram of the structure of the utility model when the distance between the electrode blade and the movable smoking pipe opening is the longest;

[0028] Explanation of the markings in the figure: 1. Electrode cutter head; 2. Movable push rod; 21. Convex push rod; 22. Concave push rod; 3. Movable smoking tube; 31. Damping ring; 4. Telescopic metal tube; 41. Thin metal rod; 42. Thick metal tube; 43. Drum spring; 5. Cutter head mounting ring; 6. Smoking tube shell; 7. Bellows; 8. Conductive tube plug. DETAILED DESCRIPTION

[0029] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a smoking-type ablation electrode of the utility model in conjunction with the accompanying drawings.

[0030] like Figure 1 Figure 2As shown, a smoking-type ablation electrode of the utility model comprises an electrode blade head 1, a movable push rod 2, a movable smoking tube 3, a telescopic metal tube 4, a blade head mounting ring 5, and a smoking tube shell 6. The movable smoking tube 3 is arranged in the smoking tube shell 6, and the head thereof is exposed from the head end of the smoking tube shell 6, and can be telescopically movable in the smoking tube shell 6. The tail end of the smoking tube shell 6 is connected to the bellows 7, and smoke is discharged through the bellows 7. The telescopic metal tube 4 is arranged in the movable smoking tube 3, and the end thereof is fixedly connected to the electrode blade head 1 through the blade head mounting ring 5. The electrode blade head 1 is fixedly connected to the movable push rod 2, and one end of the movable push rod 2 is fixedly connected to the movable smoking tube 3. The movable smoking tube 3 can be telescopically moved to drive the movable push rod 2 to telescope, thereby adjusting the length of the electrode blade head 1 exposed from the movable smoking tube 3. The telescopic metal tube 4 is used to provide an adjustable range of telescopic movement of the electrode blade head 1.

[0031] The movable push rod 2 includes a convex push rod 21 and a concave push rod 22, and the convex push rod 21 and the concave push rod 22 are mutually sleeved and can be retracted in length. The telescopic metal tube 4 includes a thin metal rod 41 and a thick metal tube 42, and the thin metal rod 41 is sleeved in the thick metal tube 42. The cutter head mounting ring 5 is fixedly connected to the end of the concave push rod 22, and the electrode cutter head 1 is fixedly connected to the head end of the thin metal rod 41 through the cutter head mounting ring 5. The movable smoking tube 3 is fixedly connected to the head end of the convex push rod 21. The movable smoking tube 3 can drive the convex push rod 21 to move when it moves forward and backward. Because the convex push rod 21 and the concave push rod 22 are nested with each other, the convex push rod 21 can be retracted and retracted in the concave push rod 22 during the movement, and can drive the concave push rod 22 to move together at the extreme position.

[0032] When the movable smoking tube 3 is moved toward the electrode blade 1, the movable smoking tube 3 drives the convex push rod 21 to move. When the convex push rod 21 moves to the farthest position of the concave push rod 22, the state is as follows: Figure 3 As shown, if the movable smoking tube 3 continues to move toward the electrode blade 1, the convex push rod 21 will drive the concave push rod 22 to move together. Because the blade mounting ring 5 is fixedly connected to the concave push rod 22, one end of the blade mounting ring 5 is connected to the electrode blade 1, that is, when the movable smoking tube 3 is moved to the far end, the electrode blade 1 also moves with it. Similarly, when the movable smoking tube 3 is moved away from the electrode blade, when the convex push rod 21 moves to the nearest position of the concave push rod 22 slot, the state is as follows Figure 4 As shown, the movable smoking tube 3 continues to move toward the proximal end, the convex push rod 21 drives the concave push rod 22 to move together, and the movable smoking tube 3 and the electrode blade head 1 simultaneously move away from the electrode blade head 1. In these two processes, the convex push rod 21 and the concave push rod 22 form a simultaneous movement or relative movement.

[0033] The tail end of the thin metal rod 41 is fixedly connected to a drum spring 43. Figure 5As shown. The thin metal rod 41 moves in the thick metal tube 42, and the drum spring 43 at the tail end is interference fit with the thick metal tube 42, providing a certain resistance, which can ensure that the electrode cutter head 1 will not loosen during use. The outer wall of the movable smoking tube 3 is sleeved with a damping ring 31, and the damping ring 31 and the movable smoking tube 3 are also interference fit, and the damping ring 31 is fixedly connected to the inner wall of the smoking tube shell 6. The resistance provided by the damping ring 31 can prevent the movable smoking tube 3 from loosening during use. The end of the thick metal tube 42 is fixedly connected to the conductive tube plug 8, and the conductive tube plug 8 is used to connect the cable to energize the electrode cutter head 1.

[0034] During use, the cable enters through the corrugated tube 7 and connects with the conductive tube plug 8. The other end of the conductive tube plug 8 is connected to the thick metal tube 42. The ablation electrode can be used after the cable is connected to the power supply. By moving the movable smoking tube 3, the convex push rod 21 is driven to move within the range of the slide groove of the concave push rod 22, and the distance between the electrode cutter head 1 and the tube mouth of the movable smoking tube 3 is changed. It can be achieved that there is a long enough distance to facilitate the plugging and unplugging of the electrode cutter head 1, and a short enough distance can be achieved to ensure the smoking effect. When you want to replace the electrode cutter head 1, move the movable smoking tube 3 away from the electrode cutter head 1, the exposed length of the electrode cutter head 1 increases, and it can be convenient for plugging and unplugging; when you want to achieve a better smoking effect, move the movable smoking tube 3 toward the electrode cutter head 1, the distance between the electrode cutter head 1 and the tube mouth of the movable smoking tube 3 is reduced, and smoking can be better. Example

[0035] The initial state of the ablation electrode is Figure 6 shown.

[0036] For example, when the smoking effect needs to be ensured, the movable smoking tube 3 is moved toward the electrode head 1 until the convex push rod 21 moves to the farthest position of the concave push rod 22 slot, and the ablation electrode state Figure 7 As shown, at this time, the distance between the electrode blade head 1 and the opening of the movable smoking tube 3 is the shortest, which can better ensure the smoking effect.

[0037] For example, when the electrode blade 1 needs to be extended for a long distance, the movable smoking tube 3 is moved toward the electrode blade 1. After the convex push rod 21 moves to the farthest position of the concave push rod 22, the movable smoking tube 3 is continued to be pulled, and the electrode blade 1 will also move accordingly. Figure 8 shown.

[0038] For example, when the electrode blade 1 needs to be replaced during surgery, the movable smoking tube 3 is moved away from the electrode blade 1 until the convex push rod 21 moves to the nearest position of the concave push rod 22 slot. Fig. 9 As shown, at this time, the distance between the electrode blade head 1 and the opening of the movable smoking pipe 3 is the longest, which allows for convenient plugging and unplugging.

[0039] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A smoking-type ablation electrode, comprising an electrode blade head (1), a movable push rod (2), a movable smoking tube (3) and a smoking tube shell (6), wherein the movable smoking tube (3) is arranged in the smoking tube shell (6), the head of the movable smoking tube (3) is exposed from the head end of the smoking tube shell (6), and can be telescopically movable in the smoking tube shell (6). It is characterized in that The electrode blade head (1) is fixedly connected to a movable push rod (2), and the movable push rod (2) is fixedly connected to a movable smoking tube (3). The movable smoking tube (3) is retractable to drive the movable push rod (2) to retract, thereby adjusting the length of the electrode blade head (1) exposed from the movable smoking tube (3). The invention also includes a retractable metal tube (4), which is arranged in the movable smoking tube (3) and has an end fixedly connected to the electrode blade head (1) via a blade head mounting ring (5). The retractable metal tube (4) is used to provide an adjustable range of retraction of the electrode blade head (1).

2. The smoking-type ablation electrode according to claim 1, It is characterized in that The movable push rod (2) comprises a convex push rod (21) and a concave push rod (22). The convex push rod (21) and the concave push rod (22) are mutually sleeved and can be extended in length. The movable smoking tube (3) is fixedly connected to the head end of the convex push rod (21). The movable smoking tube (3) moves forward and backward to drive the convex push rod (21) to move. The convex push rod (21) extends and retracts within the concave push rod (22) during the movement and drives the concave push rod (22) to move together at the extreme position.

3. The smoking-type ablation electrode according to claim 2, It is characterized in that The telescopic metal tube (4) comprises a thin metal rod (41) and a thick metal tube (42); the thin metal rod (41) is sleeved in the thick metal tube (42); the cutter head mounting ring (5) is fixedly connected to the end of the concave push rod (22); and the electrode cutter head (1) is fixedly connected to the head end of the thin metal rod (41) via the cutter head mounting ring (5).

4. The smoking-type ablation electrode according to claim 3, It is characterized in that A drum spring (43) is fixedly connected to the tail end of the thin metal rod (41); the thin metal rod (41) moves inside the thick metal tube (42); the drum spring (43) and the thick metal tube (42) are in interference fit, providing resistance and ensuring that the electrode blade head (1) will not become loose during use.

5. The smoking-type ablation electrode according to claim 3, It is characterized in that The outer wall of the movable smoking pipe (3) is provided with a damping ring (31), and the damping ring (31) and the movable smoking pipe (3) are also interference-fitted. The damping ring (31) is fixedly connected to the inner wall of the smoking pipe housing (6), and the damping ring (31) provides resistance so that the movable smoking pipe (3) will not loosen during use.

6. The smoking-type ablation electrode according to claim 3, It is characterized in that The end of the thick metal tube (42) is fixedly connected to a conductive tube plug (8), and the conductive tube plug (8) is used to connect a cable to energize the electrode blade head (1).

7. The smoking-type ablation electrode according to claim 3, It is characterized in that It comprises a bellows (7), wherein the rear end of the smoking pipe shell (6) is connected to the bellows (7), and smoke is discharged through the bellows (7).

8. The smoking-type ablation electrode according to claim 3, It is characterized in that When the movable smoking tube (3) is moved toward the electrode blade head (1), the movable smoking tube (3) drives the convex push rod (21) to move. When the convex push rod (21) moves to the farthest point of the concave push rod slot, the movable smoking tube (3) continues to be moved toward the electrode blade head (1). The convex push rod (21) drives the concave push rod to move together, and the electrode blade head (1) also moves accordingly.

9. The smoking-type ablation electrode according to claim 3, It is characterized in that When the movable smoking tube (3) is moved in a direction away from the electrode blade (1), when the convex push rod (21) moves to the nearest position of the concave push rod slot, the movable smoking tube (3) continues to be moved toward the proximal end, and the convex push rod (21) drives the concave push rod to move together, and the movable smoking tube (3) and the electrode blade (1) simultaneously move in a direction away from the electrode blade (1).

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