A soft plasma surgical knife for soft endoscopy

Abstract

The soft plasma scalpel under soft endoscopy of the present invention comprises: a soft working electrode, the soft working electrode is provided with a hose, the soft working electrode extends out of one end of the hose, a handle, one end of the handle is connected to the other end of the hose, one end of a cable passes through the other end of the handle and is electrically connected to the soft working electrode, the other end of the cable is electrically connected to one end of a connector, and the other end of the connector is electrically connected to a host; a water outlet pipeline, one end of the water outlet pipeline passes through the handle and extends into the soft working electrode, and the other end of the water outlet pipeline inputs a physiological saline medium, which can provide a medium guarantee for generating plasma. The purpose of the present invention is to solve the problem of minimally invasive, low-temperature, visible, and safe surgery that can be performed on mucosal lesions without bleeding under the visual view of a soft endoscope, with a bipolar circuit design function for vaporization, cutting, and hemostasis, without the need to attach a neutral electrode.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a soft plasma scalpel under soft endoscopy. Background Art

[0002] With the development of medical technology, diagnosis technology has also improved, and diagnosis and treatment technology has tended to be painless and reduce trauma. Endoscopes also play a key visual observation role in minimally invasive surgery. At present, endoscopes are mainly divided into rigid endoscopes and flexible endoscopes. Rigid endoscopes are less invasive than traditional surgeries, while flexible endoscopes are thinner and have smaller incisions than rigid endoscopes. They have the advantage of being able to enter the lesion through the natural cavity of the human body, and can also easily enter narrow or curved spaces, and easily reach locations that rigid endoscopes cannot reach. The diameter of the flexible endoscope is only 2-5mm, which is thinner and more flexible than the rigid endoscope.

[0003] Since there is no suitable, effective and safe soft electrosurgical scalpel head, most of the electrosurgical instruments for endoscopic surgery in current technology are electrosurgical instruments under hard endoscopes, which have large diameters and hard surgical electrodes, are inflexible to operate, and require a direct and simple working channel to be established after an incision is made on the human body. There are many postoperative complications and great damage to normal human tissues. Although the soft endoscope is thinner and more flexible than the hard endoscope, the current practice is to use a monopolar electrocoagulation guide wire to pass through the working channel, and the current is burned. The negative electrode plate attached to the human skin is used as the return channel for the working current. Since the current flows through the human tissue, it often causes damage to normal tissues, which is a very large risk factor. Another method is to use expensive laser ablation, but the laser fiber is often damaged when the soft endoscope is bent at a large angle. So far, there is no plasma surgical scalpel head specifically for soft endoscopes. Therefore, it is necessary to design a safe and effective soft low-temperature plasma scalpel that can be used in soft endoscopes. Summary of the invention

[0004] Therefore, the purpose of the present invention is to solve the problem of minimally invasive, low-temperature, visible and safe surgery that can vaporize, cut and stop bleeding of mucosal lesions under the visualization of a soft mirror and has a bipolar circuit design function without the need to attach a neutral electrode.

[0005] To this end, the technical solution adopted is that a soft plasma scalpel under soft endoscopy of the present invention comprises:

[0006] A soft working electrode, wherein a flexible tube is disposed on the outer jacket of the soft working electrode, the soft working electrode extends out of one end of the flexible tube, and a saline medium channel is disposed inside the soft working electrode;

[0007] A handle, one end of the handle is connected to the other end of the hose, one end of the cable passes through the other end of the handle and is electrically connected to the soft working electrode, the other end of the cable is electrically connected to one end of the connector, and the other end of the connector is electrically connected to the host;

[0008] A water outlet pipeline, one end of which passes through the handle and extends into the soft working electrode, and the other end of which inputs physiological saline medium.

[0009] Preferably, the soft working electrode includes an emitting electrode, a soft loop electrode tube, and an insulating tube. The insulating tube is sleeved on the emitting electrode, and the soft loop electrode tube is sleeved on the insulating tube. A gap is provided between the soft loop electrode tube and the insulating tube of the emitting electrode sleeve, and the water outlet pipeline passes through the hose and the soft loop electrode tube in sequence to be connected to the gap.

[0010] Preferably, anti-slip patterns are provided on the outer wall of the handle.

[0011] Preferably, a flow control device is provided on the water outlet pipe, and the flow control device comprises:

[0012] a first connecting pipe, one end of which is connected to the water outlet pipeline;

[0013] A conical tube, wherein one end of the conical tube with a smaller diameter is connected to the other end of the first connecting tube, and one end of the conical tube with a larger diameter is connected to one end of the second connecting tube, and the other end of the second connecting tube is suspended;

[0014] A blocking block is arranged in the tapered tube, the side wall of the blocking block is in close contact with the inner wall of the tapered tube, and the blocking block can reciprocate up and down along the tapered tube;

[0015] A spring is arranged in the conical tube, one end of the spring is connected to the upper end of the blocking block, and the other end of the spring is connected to an end of the first connecting tube away from the water outlet pipeline.

[0016] Preferably, a sealing ring is provided on the side wall of the blocking block.

[0017] Preferably, a cover is provided at one end of the second connecting tube away from the conical tube.

[0018] Preferably, the cover is threadably connected to the second connecting pipe.

[0019] Preferably, it also includes a constant speed water supply device, and the constant speed water supply device includes:

[0020] A water tank, one end of which is connected to an end of the water outlet pipe away from the handle, a water injection pipe is provided at the top of the water tank, a sealing cover is provided at the upper end of the water injection pipe, a baffle is provided in the water tank, the baffle is in close contact with the inner wall of the water tank, and can reciprocate left and right along the water tank;

[0021] A power box is arranged on the right side of the water tank, a first through hole is arranged on the right side wall of the water tank, a push rod is arranged in the first through hole, one end of the push rod is connected to the baffle, a horizontal rack is arranged in the power box, one end of the rack is connected to the other end of the push rod, a second through hole is arranged on the right side wall of the power box, a connecting rod is arranged in the second through hole, one end of the connecting rod is connected to the other end of the rack, the other end of the connecting rod extends out of the power box and is fixedly connected to a limit plate, a compression spring is arranged between the power box and the limit plate, and the compression spring is sleeved on the connecting rod;

[0022] A gear is arranged above the rack, the gear meshes with the rack, a rotating shaft is arranged on the axis of the gear, and both ends of the rotating shaft are mounted on the wall surface of the power box through bearings;

[0023] The groove body is arranged on the outer wall of the power box, and an electric motor is arranged on the inner wall of the groove body, and the output shaft of the electric motor is connected to one end of the rotating shaft.

[0024] Preferably, the groove body is provided with a flow regulating device, and the flow regulating device comprises:

[0025] A cylinder is arranged on the outer wall of the groove, a movable column is arranged in the cylinder, the movable column is tightly attached to the inner wall of the cylinder, the right end of the cylinder is connected with one end of the third connecting pipe, the other end of the third connecting pipe is connected with the water outlet pipeline, an exhaust pipe is arranged on the left wall of the cylinder, a second spring is arranged in the cylinder, one end of the second spring is fixedly connected to the left end of the movable column, and the other end of the second spring is fixedly connected to the right side of the inner wall of the cylinder;

[0026] A guide opening is provided at the upper end of the cylinder, and a first end plate and a second end plate are respectively provided on the left and right sides of the guide opening, a deceleration switch is provided on the inner side wall of the first end plate, and an acceleration switch is provided on the side wall of the second end plate, and the deceleration switch and the acceleration switch are both electrically connected to the motor, and a pressure rod is provided on the outer wall of the moving column, and the upper end of the pressure rod extends through the guide opening to above the cylinder, and the pressure rod is located between the deceleration switch and the acceleration switch.

[0027] The technical solution of the present invention has the following advantages: a soft plasma scalpel under soft endoscopy of the present invention comprises: a soft working electrode, the soft working electrode is provided with a hose, the soft working electrode extends out of one end of the hose, a saline medium channel is provided inside the soft working electrode, a handle, one end of the handle is connected to the other end of the hose, one end of a cable passes through the other end of the handle and is electrically connected to the soft working electrode, the other end of the cable is electrically connected to one end of a connector, and the other end of the connector is electrically connected to a host; a water outlet pipeline, one end of the water outlet pipeline passes through the handle and extends into the soft working electrode, and the other end of the water outlet pipeline inputs a physiological saline medium. The water outlet pipeline provides a channel for the physiological saline medium, the saline medium flows through the inside of the soft electrode to the front end of the working electrode, the front end of the soft working electrode excites the molecules in the saline medium through the electrical energy under a specific waveform to generate plasma, and the high-speed charged particles in the plasma can directly break the molecular bonds of the tissue, thereby not causing damage to the human tissue, which is essentially different from the monopolar electrocoagulation wire that uses electric current to thermally burn the tissue in terms of the working principle. The thermal damage to normal tissues is greatly reduced, thus achieving a safe and non-invasive effect. The blade of the soft plasma under the soft endoscope can be bent at will under the soft endoscope and will not be as easily damaged as the laser blade.

[0028] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0029] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 It is a structural schematic diagram of the present invention.

[0032] Figure 2 For the present invention Figure 1 Enlarged view of point A.

[0033] Figure 3 It is a schematic diagram of the structure of the soft working electrode in the present invention.

[0034] Figure 4 for Figure 3 Schematic diagram of the internal structure of the middle handle.

[0035] Figure 5It is a schematic diagram of the structure of the flow control device in the present invention.

[0036] Figure 6 It is a schematic diagram of the structure of the columnar emitting electrode in the present invention.

[0037] Figure 7 It is a schematic diagram of the structure of the hook-shaped emitting electrode in the present invention.

[0038] Figure 8 It is a schematic diagram of the structure of the clamp-shaped emitting electrode in the present invention.

[0039] Fig. 9 It is a structural schematic diagram of the constant speed water supply device in the present invention.

[0040] Fig.10 It is a top view of the constant speed water supply device in the present invention.

[0041] Fig.11 It is a schematic diagram of the structure of the flow regulating device in the present invention.

[0042] Fig.12 It is a schematic diagram of the structure of the clamp-shaped soft working electrode in the present invention.

[0043] Fig.13 It is a schematic diagram of the structure of the circular emitting electrode in the present invention.

[0044] The markings in the accompanying drawings are as follows: 1-flexible working electrode, 2-hose, 3-handle, 4-cable, 5-connector, 6-water outlet pipeline, 7-emitting electrode, 8-flexible loop electrode tube, 9-insulating tube, 10-first connecting tube, 11-conical tube, 12-second connecting tube, 13-blocking block, 14-spring, 15-cover, 16-water tank, 17-water injection pipe, 18-sealing cover, 19-baffle, 20-power box, 21-first through hole, 22 -push rod, 23-rack, 24-second through hole, 25-connecting rod, 26-compression spring, 27-gear, 28-rotating shaft, 29-groove body, 30-motor, 31-output shaft, 32-limiting plate, 33-cylinder, 34-moving column, 35-third connecting pipe, 36-exhaust pipe, 37-guide port, 38-second spring, 39-first end plate, 40-second end plate, 41-deceleration switch, 42-acceleration switch, 43-pressure rod. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0046] The embodiment of the present invention provides a soft plasma surgical knife under soft endoscopy, such as Figure 1-4 As shown, including:

[0047] A soft working electrode 1 is provided with a hose 2 on its outer sleeve. The soft working electrode 1 is soft and has a soft body design, and can be bent without causing resistance to the endoscope turning. The soft working electrode 1 extends out of one end of the hose 2. The outer diameter of the soft working electrode 1 is relatively small, only 1.8-2.5 mm, and can easily pass through a channel with a small inner diameter.

[0048] A handle 3, one end of the handle 3 is connected to the other end of the hose 2, one end of a cable 4 passes through the other end of the handle 3 and is electrically connected to the soft working electrode 1, the other end of the cable 4 is electrically connected to one end of a connector 5, and the other end of the connector 5 is electrically connected to a host, which is a high-frequency or plasma host;

[0049] A water outlet pipeline 6 , one end of which passes through the handle 3 and extends into the soft working electrode 1 , and the other end of which inputs physiological saline medium.

[0050] The working principle and beneficial technical effects of the above technical solution are as follows: the soft working electrode 1 can enter the working channel of the soft endoscope, the hose 2 plays the role of insulation and protection of the electrode, the handle 3 is used to hold the hose 2, the soft working electrode 1 can be bent with the soft endoscope to reach the target tissue, and the water outlet pipe 6 provides a physiological saline medium through the front end of the soft working electrode 1 to ensure that the saline medium can be continuously excited between the working pole and the loop pole at the front end of the soft electrode to produce a plasma with high efficiency in cutting and ablation, thereby improving the efficiency of the cutting and coagulation function of the soft working electrode 1 while reducing thermal damage to normal tissue and nerve damage, shortening the operation time, reducing surgical injuries and postoperative pain, allowing the patient to recover quickly after surgery, and reducing the patient's surgical costs; the cable 4 is used to connect the soft working electrode 1 to the connector 5, and the connector 5 is then connected to the energy platform, and the plasma can achieve cutting, ablation and other operations on tissues at a relatively low temperature (40-70°C). The soft working electrode 1 uses electrical energy under a specific waveform to excite molecules in the saline medium to generate plasma, and the high-speed charged particles in the plasma can directly break the molecular bonds of the tissue, thereby causing no damage to the human tissue. The working principle is fundamentally different from the monopolar electrocoagulation wire that uses electric current to thermally burn the tissue. It greatly reduces the thermal damage to normal tissue, thereby achieving a safe and non-invasive effect. The blade of the soft plasma under the soft endoscope can be bent at will under the soft endoscope, and it will not be as easily damaged as the laser blade.

[0051] In one embodiment, the soft working electrode 1 includes an emitting electrode 7, a soft return electrode tube 8, and an insulating tube 9. The insulating tube 9 is sleeved on the emitting electrode 7, and the soft return electrode tube 8 is sleeved on the insulating tube 9. A gap is provided between the soft return electrode tube 8 and the insulating tube 9, and the water outlet pipe 6 passes through the hose 2 and the soft return electrode tube 8 in sequence and is connected to the gap. The shape of the emitting electrode 7 can be columnar, hook-shaped, needle-shaped, mushroom-shaped, T-shaped, etc., which can meet the requirements of lesion surgery, such as Figure 6-8 As shown. The soft working electrode 1 has many functions such as hemostasis, ablation, cutting and perforation, and is used for vaporization, cutting, electrocoagulation, hemostasis, ablation, stripping, perforation, clamping, snaring and other functions of various diseased tissues and bleeding under endoscope, especially soft endoscope. In addition, the soft working electrode can be in the shape of a clamp, and the transmitting electrode can be in the shape of a circle, which can be expanded or reduced, such as Figure 12-13 As shown, in order to adapt to the ablation and cutting of different surgeries. The blade body is designed with a saline medium output channel, which makes it easy to drip the saline with suspension pressure on the front soft working electrode. In addition to the saline medium output channel, the blade body also has a fiber loop electrode mesh and a soft working electrode wire. The blade head generates current and voltage that meet the surgical functions through a high-frequency plasma generator to achieve functions such as vaporization, cutting, stripping, ablation, and hemostasis. The blade head is designed to be bipolar, and the output soft working electrode and the loop electrode are close, generally only between 1-5mm. The power used during surgery is smaller and safer, and the current range is only within a few millimeters. The blade head is designed to use saline as the electrode output medium. At the same time, the saline medium can be used to reduce the temperature generated by cutting, vaporization, and ablation surgery, reduce complications such as postoperative edema adhesion, and reduce blood from forming blood scabs, achieving a non-adhesion effect.

[0052] The working principle and beneficial technical effects of the above technical solution are as follows: a gap is set between the water outlet pipe 6 passing through the soft loop electrode tube 8 and the insulating tube 9 to ensure that during operation, a continuous flow of physiological saline medium flows out of the loop tube and enters between the emitting electrode 7 and the soft loop electrode tube 8, so that a continuous and effective plasma is generated when the plasma cutter head is connected to the plasma host for operation.

[0053] In one embodiment, anti-slip patterns are provided on the outer wall of the handle 3 .

[0054] The working principle and beneficial technical effects of the above technical solution are as follows: the anti-slip pattern can increase the friction force and prevent the handle 3 from slipping when being held.

[0055] In one embodiment, Figure 5 As shown, a flow control device is provided on the water outlet pipe 6, and the flow control device includes:

[0056] A first connecting pipe 10, one end of which is connected to the water outlet pipe 6;

[0057] A conical tube 11, wherein one end of the conical tube 11 with a smaller diameter is connected to the other end of the first connecting tube 10, and one end of the conical tube 11 with a larger diameter is connected to one end of a second connecting tube 12, and the other end of the second connecting tube 12 is suspended;

[0058] A blocking block 13 is disposed in the tapered tube 11, the side wall of the blocking block 13 is in close contact with the inner wall of the tapered tube 11, and the blocking block 13 can reciprocate up and down along the tapered tube 11;

[0059] The spring 14 is disposed in the conical tube 11 , one end of the spring 14 is connected to the upper end of the blocking block 13 , and the other end of the spring 14 is connected to an end of the first connecting tube 10 away from the water outlet pipeline 6 .

[0060] The working principle and beneficial technical effects of the above technical solution are as follows: when the water flow rate of the water outlet pipeline 6 is too large, a large amount of saline medium will affect the cutting and ablation of plasma. When the water flow rate is large, the water pressure in the water outlet pipeline 6 will increase, and the water flows through the first connecting pipe 10, pushing the blocking block 13 to move downward along the tapered tube 11, and pulling the spring 14 at the same time. When a gap appears between the blocking block 13 and the side wall of the tapered tube 11, the saline medium can be discharged through the gap through the second connecting pipe 12, and the water pressure will decrease. At this time, under the action of the elastic tension of the spring 14, the blocking block 13 is pulled upward, so that the tapered tube 11 is blocked again. Since the blocking block can prevent the saline medium in the water outlet pipeline 6 from flowing too fast, when it exceeds the warning value, it will be discharged through the second connecting pipe 12 to divert the flow, thereby always keeping the water flow rate in the water outlet pipeline 6 within a normal range, ensuring the cutting efficiency of the soft working electrode.

[0061] In one embodiment, a sealing ring is provided on the side wall of the blocking block 13 .

[0062] The working principle and beneficial technical effects of the above technical solution are as follows: the sealing ring can improve the sealing effect of the blocking block 13 and prevent leakage.

[0063] In one embodiment, a cover 15 is provided at one end of the second connecting tube 12 away from the conical tube 11 .

[0064] The working principle and beneficial technical effects of the above technical solution are as follows: the cover 15 can cover the second connecting pipe 12 when not in use to prevent foreign matter from entering.

[0065] In one embodiment, the cover 15 is threadedly connected to the second connecting pipe 12 .

[0066] The working principle and beneficial technical effects of the above technical solution: the cover 15 is threadedly connected to the second connecting pipe 12, which facilitates the disassembly and installation of the cover.

[0067] In one embodiment, Figure 9-10 As shown, it also includes a constant speed water supply device, and the constant speed water supply device includes:

[0068] A water tank 16, one end of which is in communication with an end of the water outlet pipe 6 away from the handle 3, a water injection pipe 17 is provided at the top of the water tank 16, a sealing cover 18 is provided at the upper end of the water injection pipe 17, a baffle 19 is provided inside the water tank 16, the baffle 19 is in close contact with the inner wall of the water tank 16, and can reciprocate left and right along the water tank 16;

[0069] A power box 20 is arranged on the right side of the water tank 16. A first through hole 21 is arranged on the right side wall of the water tank 16. A push rod 22 is arranged in the first through hole 21. One end of the push rod 22 is connected to the baffle 19. A horizontal rack 23 is arranged in the power box 20. One end of the rack 23 is connected to the other end of the push rod 22. A second through hole 24 is arranged on the right side wall of the power box 20. A connecting rod 25 is arranged in the second through hole 24. One end of the connecting rod 25 is connected to the other end of the rack 23. The other end of the connecting rod 25 extends outside the power box 20 and is fixedly connected to the limit plate 32. A compression spring 26 is arranged between the power box 20 and the limit plate 32. The compression spring 26 is sleeved on the connecting rod 25.

[0070] A gear 27 is disposed above the rack 23, the gear 27 meshes with the rack 23, a rotating shaft 28 is disposed on the axis of the gear 27, and both ends of the rotating shaft 28 are mounted on the wall surface of the power box 20 through bearings;

[0071] The groove body 29 is arranged on the outer wall of the power box 20 , and the motor 30 is arranged on the inner wall of the groove body 29 . The output shaft 31 of the motor 30 is connected to one end of the rotating shaft 28 .

[0072] The working principle and beneficial technical effects of the above technical solution are as follows: when the transmitting electrode needs water supply, the motor 30 is started, and the motor 30 drives the rotating shaft and the gear 27 to rotate. The gear 27 is meshed with the rack 23 to drive the rack 23, the push rod 22, the connecting rod 25, and the limit plate 32 to move to the left, and at the same time, the compression spring 26 is squeezed. The push rod 22 pushes the baffle to move to the left in the water tank along the first through hole 21, and squeezes the saline medium in the water tank 16 into the water outlet pipe 6 for use with the transmitting electrode. Due to the uniform rotation of the motor, after the meshing of the rack and gear, the baffle can be pushed forward at a uniform speed, ensuring the uniform supply of the saline medium, achieving uniform quantitative supply, and thus ensuring the therapeutic effect of the operation. After use, the motor is turned off, and under the elastic force of the compression spring 26, the push plate 19 will move to the initial state, the sealing cover 18 is opened, and new saline medium is injected through the water injection pipe 17 to be used next time.

[0073] In one embodiment, the groove body 29 is provided with a flow regulating device, and the flow regulating device comprises:

[0074] The cylinder 33 is arranged on the outer wall of the groove body 29, and a movable column 34 is arranged in the cylinder 33, and the movable column 34 is tightly attached to the inner wall of the cylinder 33. The right end of the cylinder 33 is connected with one end of the third connecting pipe 35, and the other end of the third connecting pipe 35 is connected with the water outlet pipe 6. An exhaust pipe 36 is arranged on the left wall of the cylinder 33, and a second spring 38 is arranged in the cylinder 33, and one end of the second spring 38 is fixedly connected to the left end of the movable column 34, and the other end of the second spring 38 is fixedly connected to the right side of the inner wall of the cylinder 33;

[0075] A guide port 37 is provided at the upper end of the cylinder 33, and a first end plate 39 and a second end plate 40 are provided on the left and right sides of the guide port 37, respectively. A deceleration switch 41 is provided on the inner side wall of the first end plate 39, and an acceleration switch 42 is provided on the side wall of the second end plate 40. Both the deceleration switch 41 and the acceleration switch 42 are electrically connected to the motor 30. A pressure rod 43 is provided on the outer wall of the moving column 34, and the upper end of the pressure rod 43 passes through the guide port 37 and extends to the top of the cylinder 33, and the pressure rod 43 is located between the deceleration switch 41 and the acceleration switch 42. A protective shell is provided on the cylinder 33, and the protective shell wraps the first end plate 39 and the second end plate 40, and protects the internal components to prevent external forces from affecting the movement of the pressure rod 43 and affecting the accuracy of flow regulation.

[0076] The working principle and beneficial technical effects of the above technical solution are as follows: when the water outlet pipe 6 supplies saline medium water, the water flows through the third connecting pipe 35 and is applied to the moving column 34. Under the combined action of the water pressure and the second spring 38, the moving column 34 is maintained in a balanced state. When the water flow speed is very fast, the water pressure will increase, and the moving column 34 will move to the left, driving the pressure rod 43 to move to the left along the guide port 37. When the pressure rod 43 contacts the deceleration switch 41 on the first end plate 39, the deceleration switch 41 will reduce the speed of the motor 30, thereby The water flow speed is slowed down; when the water flow speed is very slow, the water pressure will become smaller, and under the elastic force of the second spring 38, the movable column 34 will move to the right, driving the pressure rod 43 to move to the right along the guide port 37, and when it contacts the acceleration switch 42 on the second end plate 40, the acceleration switch 42 will increase the speed of the motor 30, thereby accelerating the water flow speed, thereby realizing automatic adjustment of the flow rate, so that the flow rate of the water outlet pipe 6 is always maintained within a normal range, thereby improving the cutting accuracy and quality of the operation and reducing trauma.

[0077] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A soft plasma surgical knife for soft endoscopy, characterized in that: include: A soft working electrode (1), wherein a flexible tube (2) is disposed on the outer casing of the soft working electrode (1), and the soft working electrode (1) extends out of one end of the flexible tube (2). A handle (3), one end of the handle (3) is connected to the other end of the hose (2), one end of a cable (4) passes through the other end of the handle (3) and is electrically connected to the soft working electrode (1), the other end of the cable (4) is electrically connected to one end of a connector (5), and the other end of the connector (5) is electrically connected to the host; a water outlet pipeline (6), one end of the water outlet pipeline (6) passing through the handle (3) and extending into the soft working electrode (1), and the other end of the water outlet pipeline (6) inputting physiological saline medium; The water outlet pipeline (6) is provided with a flow control device, and the flow control device comprises: a first connecting pipe (10), one end of the first connecting pipe (10) being in communication with the water outlet pipeline (6); A conical tube (11), wherein an end of the conical tube (11) with a smaller diameter is connected to the other end of the first connecting tube (10), and an end of the conical tube (11) with a larger diameter is connected to one end of a second connecting tube (12), and the other end of the second connecting tube (12) is suspended in the air; A blocking block (13) is arranged in the tapered tube (11), the side wall of the blocking block (13) is in close contact with the inner wall of the tapered tube (11), and the blocking block (13) can reciprocate up and down along the tapered tube (11); a spring (14) disposed in the conical tube (11), one end of the spring (14) being connected to the upper end of the blocking block (13), and the other end of the spring (14) being connected to an end of the first connecting tube (10) away from the water outlet pipeline (6); It also includes a constant speed water supply device, the constant speed water supply device includes: a water tank (16), one end of the water tank (16) being in communication with an end of the water outlet pipe (6) away from the handle (3); a water injection pipe (17) being provided at the top end of the water tank (16); a sealing cover (18) being provided at the upper end of the water injection pipe (17); a baffle (19) being provided inside the water tank (16); the baffle (19) being in close contact with the inner wall of the water tank (16) and being capable of reciprocating left and right along the water tank (16); A power box (20) is arranged on the right side of the water box (16). A first through hole (21) is arranged on the right side wall of the water box (16). A push rod (22) is arranged in the first through hole (21). One end of the push rod (22) is connected to the baffle (19). A rack (23) in a horizontal direction is arranged in the power box (20). One end of the rack (23) is connected to the other end of the push rod (22). A second through hole (24) is arranged on the right side wall of the power box (20). A connecting rod (25) is arranged in the second through hole (24). One end of the connecting rod (25) is connected to the other end of the rack (23). The other end of the connecting rod (25) extends outside the power box (20) and is fixedly connected to a limit plate (32). A compression spring (26) is arranged between the power box (20) and the limit plate (32). The compression spring (26) is sleeved on the connecting rod (25). a gear (27) disposed above the rack (23), the gear (27) meshing with the rack (23), a rotating shaft (28) disposed on the axis of the gear (27), and both ends of the rotating shaft (28) being mounted on the wall surface of the power box (20) via bearings; A groove body (29) is arranged on the outer wall of the power box (20), and an electric motor (30) is arranged on the inner wall of the groove body (29). An output shaft (31) of the electric motor (30) is connected to one end of the rotating shaft (28).

2. The soft plasma surgical knife for soft endoscopy according to claim 1, characterized in that: The soft working electrode (1) comprises an emitting electrode (7), a soft loop electrode tube (8), and an insulating tube (9); the insulating tube (9) is sleeved on the emitting electrode (7); the soft loop electrode tube (8) is sleeved on the insulating tube (9); a gap is provided between the soft loop electrode tube (8) and the insulating tube (9); the water outlet pipeline (6) passes through the soft tube (2) and the soft loop electrode tube (8) in sequence and is connected to the gap.

3. The soft plasma surgical knife under soft endoscopy according to claim 1, characterized in that: Anti-slip patterns are provided on the outer wall of the handle (3).

4. The soft plasma surgical knife for soft endoscopy according to claim 1, characterized in that: A sealing ring is provided on the side wall of the blocking block (13).

5. The soft plasma surgical knife for soft endoscopy according to claim 1, characterized in that: A cover (15) is provided at one end of the second connecting tube (12) away from the conical tube (11).

6. The soft plasma surgical knife for soft endoscopy according to claim 5, characterized in that: The cover (15) is threadedly connected to the second connecting pipe (12).

7. The soft plasma surgical knife for soft endoscopy according to claim 1, characterized in that: The groove body (29) is provided with a flow regulating device, and the flow regulating device comprises: A cylinder (33) is arranged on the outer wall of the groove body (29); a movable column (34) is arranged inside the cylinder (33); the movable column (34) is in close contact with the inner wall of the cylinder (33); the right end of the cylinder (33) is connected to one end of a third connecting pipe (35); the other end of the third connecting pipe (35) is connected to a water outlet pipeline (6); an exhaust pipe (36) is arranged on the left wall of the cylinder (33); a second spring (38) is arranged inside the cylinder (33); one end of the second spring (38) is fixedly connected to the left end of the movable column (34); the other end of the second spring (38) is fixedly connected to the right side of the inner wall of the cylinder (33); A guide opening (37) is provided at the upper end of the cylinder (33), and a first end plate (39) and a second end plate (40) are provided on the left and right sides of the guide opening (37), respectively; a deceleration switch (41) is provided on the inner wall of the first end plate (39), and an acceleration switch (42) is provided on the side wall of the second end plate (40); the deceleration switch (41) and the acceleration switch (42) are both electrically connected to the motor (30); a pressure rod (43) is provided on the outer wall of the movable column (34), and the upper end of the pressure rod (43) passes through the guide opening (37) and extends to the top of the cylinder (33), and the pressure rod (43) is located between the deceleration switch (41) and the acceleration switch (42).

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