Plasma surgical electrode with water evacuation hole

Abstract

The utility model relates to a kind of plasma surgical electrode with water outlet hole, belong to medical instrument technical field, including handle, electrode working end enters handle interior after passing through sleeve pipe fixing frame;Electrode working end includes sub needle, sub needle seat and outer sleeve pipe;Sub needle is designed as double bending, two sub needles can be curved in same direction or opposite direction;Outer sleeve pipe is equipped with water outlet hole, and water outlet hole is designed as horizontal rectangle or horizontal waist shape;The utility model not only ensures that sub needle and surgical site soft tissue contact in large area, but also make two sub needles have larger gap, reduce the risk of water absorption hole blockage, and the service life of plasma surgical electrode is longer;The water outlet hole of outer sleeve pipe is horizontal opening, and physiological saline flows to plasma scalpel head with larger and more uniform coverage area, to form better conductive environment between emitter and return electrode, so that plasma is more uniform, and the temperature of surgical site is more uniform, which is beneficial to the cutting and coagulation effect of electrode on targeted tissue.

Description

Technical Field

[0001] This utility model relates to a plasma surgical electrode with a water outlet, belonging to the field of medical device technology. Background Technology

[0002] Plasma surgical electrodes generate a stable plasma layer in a conductive saline environment through high-frequency electrical energy from the bipolar electrodes at the electrode tip. This plasma layer is used for tissue cutting and coagulation. Its advantages lie in integrating cutting, ablation, coagulation, irrigation, and / or suction into a single process, facilitating surgical manipulation. Tissue removal is performed at relatively low temperatures (40-70℃), minimizing thermal damage to surrounding tissues. When plasma surgical electrodes are used in surgical sites such as the ear, nose, and throat, saline solution needs to be sprayed from the electrode tip to maintain a conductive environment, and the cut target tissue is removed from the body through saline reflux.

[0003] The existing electrode working end uses a parallel design for the sub-needles. The problem with this structure is that the gap between the sub-needles is small. When the surgical electrode excites plasma, the cut tissue tends to accumulate on the sub-needles, thus blocking the water suction hole below the sub-needle, causing the plasma surgical electrode to fail. In addition, the water outlet of the working end of the existing plasma surgical electrode often uses a design of multiple small holes. The area of ​​the electrode circuit tube covered by the water outlet is uneven, which affects the uniformity of the plasma excitation by the electrode, and thus affects the plasma cutting and coagulation effect. Utility Model Content

[0004] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a plasma surgical electrode with a water outlet hole, which has a large gap between the two sub-needles, providing sufficient space for the water outlet hole to absorb water, reducing the risk of water outlet hole blockage, extending service life, and increasing and more uniform water output from the electrode head. Therefore, the plasma generated at the electrode head end is more uniform, improving the cutting and coagulation effects during surgery. The plasma surgical electrode with water outlet described in this utility model includes a handle, with a sleeve fixing frame fixedly connected to the front end of the handle, and the working end of the electrode passing through the sleeve fixing frame and entering the handle; a cable sheath is fixedly connected to the end of the handle, and an integrated seven-core cable, drip tube and suction tube pass through the cable sheath and enter the handle. The electrode working end is the functional part of the plasma surgical electrode. The electrode working end includes a sub-needle, a sub-needle seat, and an outer tube. The sub-needle is embedded in the sub-needle seat, and the sub-needle seat is embedded at the head end of the outer tube. The sub-needle seat has a water suction hole in the middle, which is connected to the suction tube. The outer tube is connected to the drip tube. There are two sub-needles, which serve as emitters and can be designed as sheet-like or wire-like sub-needles made of tungsten, molybdenum, or other metals; the sub-needles have a double-bending design, and the two sub-needles can be bent in the same direction or in opposite directions; The outer tube, serving as the return electrode, is the skeleton structure of the electrode's working end and can be designed in a straight or curved shape. A water outlet is located near the head of the outer tube, designed as a horizontal rectangle or a horizontal waist shape. The number of water outlets can be one or more, ensuring that the saline solution flowing from the outlet covers more of the head of the outer tube. This creates a larger and more uniform conductive channel between the outer tube (return electrode) and the sub-needle (emitter), resulting in a wider and more uniform plasma range excited by the sub-needle.

[0005] The technical solution of this utility model is to provide a plasma surgical electrode with a water outlet. The sub-needle at the working end of the surgical electrode has a double-bent design. This design ensures that the sub-needle has a large contact area with the soft tissue of the surgical site, resulting in better cutting and coagulation effects at the working end of the electrode. It also provides a larger gap between the two sub-needles, reserving sufficient space for the water inlet and reducing the risk of water inlet blockage. This also extends the service life of the plasma surgical electrode. At the same time, the water outlet on the outer tube has a horizontal opening design. Compared with other vertical opening designs, the saline solution has a larger coverage area and more uniform coverage when flowing to the plasma surgical tip. This creates a better conductive environment between the emitter and the return electrode, resulting in more uniform plasma excitation and more uniform temperature at the surgical site, which is beneficial to the electrode's cutting and coagulation effects on the target tissue.

[0006] Preferably, the electrode working end further includes a water circuit connecting pipe, a water circuit pipe, a protective pipe, and an insulating sleeve; the sub-needle and the water circuit pipe pass through the inner side of the protective pipe, the protective pipe passes through the inner side of the outer sleeve, and the outer sleeve is wrapped by the insulating sleeve to form insulation between the outer sleeve and human tissue.

[0007] Preferably, the suction hole is connected to the water pipe through a water pipe connector, the water pipe is connected to the suction pipe, and the pagoda plug at the end of the suction pipe is connected to the rubber hose of the negative pressure suction device to realize the return of physiological saline to the plasma surgical electrode.

[0008] Preferably, a gap is left between the protective tube and the outer tube, and the inner wall of the outer tube and the outer wall of the protective tube form an outflow channel for physiological saline.

[0009] Preferably, the lead wire of the sub-needle is connected to the conductor of the integrated seven-core cable via a crimp connector; the lead wire of the outer sheath is connected to another conductor of the integrated seven-core cable via a crimp connector.

[0010] Preferably, the drip tube is connected to the corresponding hole on the cannula holder, and the end of the drip tube is provided with a puncture device for penetrating the saline infusion bag; the saline first enters the cannula holder through the drip tube, then enters the area between the outer cannula and the protective tube through the water inlet hole of the outer cannula, and finally exits through the water outlet hole. The drip tube is equipped with a flow rate regulating valve to control the drip rate of physiological saline. During surgery, the tubular part of the drip tube is connected to a flow controller, and the doctor can synchronize the drip of physiological saline with the stimulation of plasma by using the foot switch of the plasma surgery device.

[0011] Preferably, the integrated seven-core cable is connected to the main unit of the plasma surgery equipment via a plug at the end.

[0012] The advantages of this utility model compared with the prior art are: 1. The sub-needles at the working end of the surgical electrode have a double-bend design. The two sub-needles can bend in the same direction or in opposite directions. This ensures that the sub-needles have a large contact area with the soft tissue of the surgical site, so that the working end of the electrode has better cutting and coagulation effects. It also provides a larger gap between the two sub-needles, leaving enough space for the suction hole to absorb water, reducing the risk of the suction hole clogging, and extending the service life of the plasma surgical electrode. 2. The water outlet of the outer tube is designed with a horizontal opening. Compared with other vertical opening designs, the saline solution has a larger coverage area and more uniform coverage when flowing to the plasma scalpel head. This creates a better conductive environment between the emitter and the return electrode, resulting in more uniform plasma excitation and temperature at the surgical site. This is beneficial for the electrode's cutting of the target tissue and for the coagulation effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a disconnected view of the working end of the electrode in Example 1; Figure 3 yes Figure 2 The left view; Figure 4 This is a partial cross-sectional view of the working end of the electrode in Example 1; Figure 5 This is a cross-sectional view of the handle; Figure 6 This is a disconnected view of the working end of the electrode in Example 2.

[0014] In the diagram: 1. Electrode working end; 11. Water pipe; 12. Protective pipe; 13. Outer sleeve; 131. Water outlet; 132. Water inlet; 14. Insulating sleeve; 15. Sub-needle; 16. Sub-needle seat; 161. Suction hole; 17. Water connection pipe; 18. Crimping pipe; 2. Sleeve fixing bracket; 3. Handle; 4. Cable sheath; 5. Integrated seven-core cable; 6. Suction tube; 7. Drip tube. Detailed Implementation

[0015] Example 1 like Figures 1-5As shown, this embodiment is achieved through the following technical solution: it includes a handle 3, with a sleeve fixing frame 2 fixedly connected to the front end of the handle 3, and the electrode working end 1 passing through the sleeve fixing frame 2 and entering the interior of the handle 3; a cable sheath 4 is fixedly connected to the end of the handle 3, and an integrated seven-core cable 5, a drip tube 7 and a suction tube 6 pass through the cable sheath 4 and enter the interior of the handle 3. The electrode working end 1 is the functional part of the plasma surgical electrode. The electrode working end 1 includes a sub-needle 15, a sub-needle seat 16, and an outer tube 13. The sub-needle 15 is embedded in the sub-needle seat 16, and the sub-needle seat 16 is embedded at the head end of the outer tube 13. The sub-needle seat 16 is made of ceramic material and can insulate the sub-needle 15 and the outer tube 13. The outer layer of the sub-needle 15 is provided with a sub-needle insulating sleeve (PI). The outer tube 13 is made of stainless steel. The needle holder 16 has a water suction hole 161 in the middle, which is connected to the suction tube 6, and the outer tube 13 is connected to the drip tube 7. There are two sub-needles 15. Sub-needles 15 serve as emitters and can be designed as sheet-like or wire-like sub-needles made of tungsten, molybdenum, or other metals. Sub-needles 15 have a double-bent design, with the two sub-needles 15 bending in the same direction in a “))” shape. The outer tube 13 serves as the loop electrode and is the skeleton structure of the electrode working end 1. It can be designed to be straight or curved. A water outlet 131 is provided near the head of the outer tube 13. The water outlet 131 is designed as a horizontal rectangle or a horizontal waist shape. There is only one water outlet 131, which ensures that the saline solution flowing out of the water outlet 131 covers more of the head of the outer tube 13. This allows a larger and more uniform conductive channel to be formed between the outer tube 13, which serves as the loop electrode, and the sub-needle 15, which serves as the emitter. As a result, the plasma excited by the sub-needle 15 has a wider range and is more uniform.

[0016] In this embodiment, the electrode working end 1 further includes a water channel connecting pipe 17, a water channel pipe 11, a protective pipe 12, and an insulating sleeve 14; the sub-needle 15 and the water channel pipe 11 pass through the inner side of the protective pipe 12, the protective pipe 12 passes through the inner side of the outer sleeve 13, and the outer sleeve 13 is wrapped by the insulating sleeve 14, so that the outer sleeve 13 is insulated from the human tissue.

[0017] The suction hole 161 is connected to the water pipe 11 via the water connection pipe 17. The water pipe 11 is connected to the suction pipe 6. The pagoda plug at the end of the suction pipe 6 is connected to the rubber hose of the negative pressure suction device to realize the return of physiological saline to the plasma surgical electrode. A gap is left between the protective tube 12 and the outer tube 13, and the inner wall of the outer tube 13 and the outer wall of the protective tube 12 form an outward discharge channel for physiological saline. The lead wire of the sub-needle 15 is connected to the conductor of the integrated seven-core cable 5 via the crimp connector 18; the lead wire of the outer tube 13 is connected to another conductor of the integrated seven-core cable 5 via the crimp connector 18.

[0018] The drip tube 7 is connected to the corresponding hole on the cannula fixation frame 2. A puncture device is provided at the end of the drip tube 7 for penetrating the saline infusion bag. The saline solution first enters the cannula fixation frame 2 through the drip tube 7, then enters the area between the outer cannula 13 and the protective tube 12 through the inlet hole 132 of the outer cannula 13, and finally exits through the outlet hole 131. A flow rate regulating valve is provided on the drip tube 7 to control the drip rate of the saline solution. During surgery, the flexible part of the drip tube 7 is connected to a flow controller. The flow controller contains a solenoid valve and a jaw stopper, which can block the drip tube 7. The doctor can synchronize the electrode dripping of saline solution with the plasma excitation using the foot switch of the plasma surgery device. The integrated seven-core cable 5 is connected to the main unit of the plasma surgery device via a plug at its end.

[0019] The working principle of this utility model: The flow direction of physiological saline is as follows: physiological saline enters the handle 3 from the drip tube 7, flows through the handle 3 and enters the area between the outer tube 13 and the protective tube 12 through the water inlet 132, and then flows out from the water outlet 131 at the head of the outer tube 13. The water outlet 131 has a horizontal waist-shaped design, which can ensure that more physiological saline from the water outlet 131 covers the head of the outer tube 13, so that the outer tube 13, which is the circuit electrode, and the sub-needle 15, which is the emitter, form a larger and more uniform conductive channel, thereby making the plasma excited by the sub-needle 15 brighter and more uniform. Then, under the negative pressure suction, the saline solution flows back into the electrode working end 1 through the suction hole 161 of the needle seat 16, flows through the water connection pipe 17 and the water pipe 11 in sequence, and finally flows out from the suction pipe 6.

[0020] The conductive channel is as follows: the integrated seven-core cable 5 is connected to the electrode interface of the plasma surgical device. The emitter current enters from the integrated seven-core cable 5, passes through the handle 3 and the electrode working end 1, and is conducted from the needle 15 at the head of the electrode working end 1 through physiological saline to the outer sheath 13 of the electrode working end 1, and then through the handle 3 and the integrated seven-core cable 5 to the plasma surgical device. The advantage of this structure is that it integrates physiological saline dripping and suction functions, and can form a local conductive environment around the electrode tip to meet the surgical needs of non-enclosed space areas.

[0021] Example 2 like Figure 6 As shown, the sub-needle 15 in this embodiment has a double-bend design, with the two sub-needles 15 bending towards each other in a “()” shape; the other structures of this embodiment are the same as those in embodiment 1.

Claims

1. A plasma surgical electrode with a water outlet, characterized in that, Includes a handle (3), a sleeve fixing frame (2) is fixedly connected to the front end of the handle (3), and the electrode working end (1) passes through the sleeve fixing frame (2) and enters the handle (3); a cable sheath (4) is fixedly connected to the end of the handle (3), and an integrated seven-core cable (5), a drip tube (7) and a suction tube (6) pass through the cable sheath (4) and enter the handle (3). The electrode working end (1) includes a sub-needle (15), a sub-needle seat (16), and an outer tube (13); the sub-needle (15) is embedded in the sub-needle seat (16), and the sub-needle seat (16) is embedded at the head end of the outer tube (13); the sub-needle seat (16) has a water suction hole (161) in the middle, which is connected to the suction tube (6), and the outer tube (13) is connected to the drip tube (7); There are two sub-needles (15), which are designed with a double-bend shape. The two sub-needles (15) can be bent in the same direction or in opposite directions. The outer tube (13) has a water outlet (131) near the head end. The water outlet (131) is designed with a horizontal rectangle or a horizontal waist shape. There are one or more water outlets (131).

2. The plasma surgical electrode with a water outlet according to claim 1, characterized in that, The electrode working end (1) also includes a water connection pipe (17), a water pipe (11), a protective pipe (12) and an insulating sleeve (14); the sub-needle (15) and the water pipe (11) are inserted inside the protective pipe (12), the protective pipe (12) is inserted inside the outer sleeve (13), and the outer sleeve (13) is wrapped by the insulating sleeve (14).

3. The plasma surgical electrode with a water outlet according to claim 2, characterized in that, The water inlet (161) is connected to the water pipe (11) through the water pipe connector (17), and the water pipe (11) is connected to the suction pipe (6). The suction pipe (6) is used to connect the negative pressure suction device.

4. The plasma surgical electrode with a water outlet according to claim 2, characterized in that, A gap is left between the protective tube (12) and the outer tube (13), and the inner wall of the outer tube (13) and the outer wall of the protective tube (12) form a channel for the outflow of physiological saline.

5. The plasma surgical electrode with a water outlet according to claim 1, characterized in that, The lead wire of the sub-needle (15) is connected to the conductor of the integrated seven-core cable (5) through a crimp connector (18); the lead wire of the outer tube (13) is connected to another conductor of the integrated seven-core cable (5) through a crimp connector (18).

6. The plasma surgical electrode with a water outlet according to claim 1, characterized in that, The drip tube (7) is connected to the corresponding hole on the cannula holder (2), and a puncture device is provided at the end of the drip tube (7); the drip tube (7) is provided with a flow rate regulating valve.

7. The plasma surgical electrode with a water outlet according to claim 5, characterized in that, The integrated seven-core cable (5) is connected to the main unit of the plasma surgery equipment via a plug at the end.

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