Visual multifunctional negative pressure suction rotary cutting system

Abstract

The invention belongs to the technical field of medical instruments, and relates to a visual multifunctional negative pressure suction rotary cutting system which comprises a machine shell, a negative pressure unit and an electric rotary cutting needle, the negative pressure unit comprises a multi-stage vacuum pump set, a buffer bottle, a flow meter, an electric field sterilizer, a multi-way pipeline, a pressure regulating valve and a liquid storage bottle, the multi-stage vacuum pump set is installed in the machine shell, and the buffer bottle is connected with the flow meter. A buffering bottle is connected to a negative pressure connector of the multi-stage vacuum pump set through a pipeline and connected with an electric field sterilizer through a pipeline provided with a flow meter, the electric field sterilizer is connected with a multi-way pipeline, one branch of the multi-way pipeline is connected to a liquid storage bottle through an electromagnetic valve, one branch of the multi-way pipeline is connected to a pressure regulating valve installed on a machine shell, and the other branch of the multi-way pipeline is connected to a water pump. And the liquid storage bottle is connected to the electric rotary cutting needle through a pipeline. The invention has the advantages of scientific and reasonable design, adjustable flow and pressure, safety, reliability, convenience in operation, reduction of pathogen transmission and easiness in implementation.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and relates to a negative pressure suction rotary cutting device, and in particular to a visual multifunctional negative pressure suction rotary cutting system. Background Art

[0002] The negative pressure suction and excision device is a surgical instrument commonly used in minimally invasive surgery. It generally includes a negative pressure unit and an excision needle. During operation, the excision needle is punctured to the corresponding tumor site, and the tumor is completely removed through negative pressure suction and excision.

[0003] However, the existing negative pressure suction peeling device still has the following shortcomings:

[0004] 1. The existing rotary cutting operation is completed by the doctor manually using a rotary cutting needle. If a large number of operations are required, it will undoubtedly increase the doctor's labor intensity and be detrimental to the operation of the operation;

[0005] 2. The existing negative pressure unit of the negative pressure suction peeling device is usually equipped with one vacuum pump, resulting in a small adjustable pressure range. The diameter of the peeling needle is generally about 3-5 mm. During operation, a higher pressure is required to meet the requirements of negative pressure suction;

[0006] 3. If the excision surgery is performed on patients with infectious diseases, while the diseased tissue is attracted by negative pressure, the gas containing viruses and bacteria will also be attracted. If the attracted gas is discharged directly without being treated, the air will be filled with viruses and bacteria, posing a threat to the health of people around them. Summary of the invention

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a visual multifunctional negative pressure suction and rotary cutting system that is easy to operate, reduces the labor intensity of doctors, has adjustable pressure and flow, reduces the spread of pathogens, and is easy to implement.

[0008] The present invention solves the technical problem by adopting the following technical solutions:

[0009] A visual multifunctional negative pressure suction peeling system, characterized in that it includes a casing, a negative pressure unit and an electric peeling needle, the negative pressure unit includes a multi-stage vacuum pump group, a buffer bottle, a flow meter, an electric field sterilizer, a multi-way pipeline, a pressure regulating valve and a liquid storage bottle, the multi-stage vacuum pump group is installed on the inner bottom plate of the casing, the negative pressure interface of the multi-stage vacuum pump group is connected to the negative pressure outlet of the buffer bottle through a pipeline, the negative pressure inlet of the buffer bottle is connected to the gas outlet of the electric field sterilizer through a pipeline installed with a flow meter, a multi-way pipeline is connected to the gas inlet of the electric field sterilizer, a branch of the multi-way pipeline is connected to the liquid storage bottle through an electromagnetic valve, a branch of the multi-way pipeline is connected to the pressure regulating valve installed on the casing, and the liquid storage bottle is connected to the electric peeling needle through a pipeline.

[0010] Moreover, the negative pressure unit further comprises an anti-overflow bottle, and the anti-overflow bottle is connected between the solenoid valve and the liquid storage bottle on the branch of the multi-channel pipeline.

[0011] Moreover, there are two liquid storage bottles and two anti-overflow bottles, and the multi-way pipe is a four-way pipe. The first branch of the four-way pipe is connected to the electric field sterilizer, the second branch of the four-way pipe is connected to the pressure regulating valve, the third branch of the four-way pipe is connected to the first anti-overflow bottle through the pipe installed with the first solenoid valve, and the fourth branch of the four-way pipe is connected to the second anti-overflow bottle through the pipe installed with the second solenoid valve.

[0012] Moreover, the multi-stage vacuum pump group includes four vacuum pumps, solenoid valves, manifolds and silencers. A negative pressure interface is provided on the upper end surface of the manifold, and four interfaces are provided at intervals on the lower end surface of the manifold. A vacuum pump connected to a solenoid valve is installed on each interface, and silencers are installed on the four vacuum pumps.

[0013] Moreover, it also includes a peristaltic pump and a liquid bag. The peristaltic pump is installed on the front end surface of the housing, one end of the peristaltic pump is connected to the liquid bag through a pipeline, and the other end of the peristaltic pump is connected to the electric rotary cutting needle through a pipeline.

[0014] Moreover, the electric field sterilizer includes a geodetic body shell, an insulating support frame, an insulating medium tube, a high-voltage pole tube, a high-voltage pole rod and a high-voltage connecting spring sheet. A gas inlet and a gas outlet are respectively arranged at the two ends of the geodetic body shell. An insulating medium tube is installed inside the geodetic body shell through the insulating support frame. The gap between the insulating medium tube and the geodetic body shell forms a disinfection air gap. The high-voltage pole tube is coaxially sleeved in the insulating medium tube. The high-voltage pole rod is inserted in the high-voltage pole tube. A high-voltage connecting spring sheet with an edge abutting against the high-voltage pole tube is installed on the high-voltage pole rod. One end of the high-voltage pole rod extends from one end of the geodetic body shell, and a wire connected to a power board is connected to the extended high-voltage pole rod.

[0015] Moreover, the insulating support frame is composed of a disc support part and a cylindrical insertion part. The cylindrical insertion part is coaxially arranged at the inner center position of the disc support part. The cylindrical insertion part is inserted into the end of the high-voltage pole tube. Air-passing notches are arranged at intervals on the outer edge of the disc support part, and a through hole for inserting the high-voltage pole is provided in the middle of the cylindrical insertion part.

[0016] Moreover, the high-voltage connecting spring sheet is formed by bending a spring sheet, including a vertical penetration portion and upwardly inclined connecting portions at the upper and lower ends of the vertical penetration portion. The vertical penetration portion is penetrated on the high-voltage pole through a through-hole arranged in the middle thereof, and high-voltage connecting spring sheet fastening nuts threadedly connected to the high-voltage pole are arranged at both ends of the vertical penetration portion, and the two connecting portions are crimped on the inner wall of the high-voltage pole tube.

[0017] Moreover, the electric rotary cutting needle comprises a feeding rotating part and a driving part, and buckles are arranged at both ends of the upper part of the driving part housing, and the feeding rotating part is mounted on the driving part through the buckles.

[0018] The feed rotating part includes an inner knife tube, an outer knife tube, an outer knife tube seat, a feed drive housing, a guide groove, a screw sleeve, a feed gear and a rotating gear. The outer knife tube seat is fixedly installed at the rear end of the outer knife tube, and the outer knife tube seat is threadedly connected to the front end of the feed drive housing. The feed drive housing is a structure with a mounting cavity in the middle, and a driving opening is provided at the bottom of the mounting cavity. The inner knife seat is coaxially penetrated inside the feed drive housing, and the inner knife tube is fixedly installed at the front end of the inner knife seat. The inner knife tube extends from the front end of the feed drive housing and penetrates the mounting cavity. Inside the outer knife tube, the rear part of the inner knife seat extends out from the rear end of the feed drive housing, a negative pressure pipeline interface and a peristaltic pump interface are arranged at the rear end of the inner knife seat, a rotating gear is connected to the outer wall of the inner knife seat, a feed gear is arranged at the front end of the rotating gear, a screw sleeve is meshed on the inner wall of the feed gear, the screw sleeve is sleeved on the inner knife seat and is limited by a shaft retaining ring arranged on the outer wall of the inner knife seat, the screw sleeve is slidably installed in a guide groove formed on the inner wall of the installation cavity, and the rotating gear and the feed gear extend out from the drive opening;

[0019] The driving part includes a driving part housing, a feed DC motor, a feed drive gear, a rotating DC motor, a rotating drive gear, a button trigger and a travel switch. The driving part housing includes a horizontal part and an inclined part which is arranged at the rear end of the horizontal part and is inclined downward and backward. A feed drive gear driven by the feed DC motor and a rotating drive gear driven by the rotating DC motor are arranged in the horizontal part. The feed drive gear is meshed with the feed gear, and the rotating drive gear is meshed with the rotating gear. A trigger mounting port is arranged on the inner end surface of the inclined part, and a button trigger is hinged at the trigger mounting port. A travel switch controlled by a trigger button is arranged in the inclined part, and the travel switch is connected to the controller signal arranged on the casing.

[0020] Furthermore, it also includes an endoscope, wherein the optical fiber probe of the endoscope is clamped on the driving part housing of the electric rotary cutting needle, and the touch screen of the endoscope is connected to the endoscope display screen disposed on the housing by signal.

[0021] The advantages and positive effects of the present invention are:

[0022] 1. This visual multifunctional negative pressure suction and peeling system achieves the purpose of adjustable flow through the setting of a multi-stage vacuum pump group. According to the needs of use, the number of vacuum pumps opened is controlled by the solenoid valves connected to each vacuum pump to achieve the adjustment of the negative pressure flow; the purpose of adjustable negative pressure is achieved through the setting of the pressure regulating valve; through the setting of the electric field sterilizer on the negative pressure pipeline, the gas attracted by negative pressure can be disinfected and filtered, and the bacteria in the gas can be killed before being discharged into the atmosphere to avoid the spread of bacteria; through the setting of the electric peeling needle, the peeling operation is automated, which reduces the labor intensity of doctors.

[0023] 2. This visual multifunctional negative pressure suction peeling system avoids the problem of the liquid in the storage bottle overflowing into the vacuum pump through the setting of the overflow prevention bottle, thereby extending the service life of the equipment and reducing the failure rate.

[0024] 3. This visual multifunctional negative pressure suction peeling system increases the liquid storage capacity by designing two liquid storage bottles, avoiding the need to stop the machine to replace the liquid storage bottle due to full liquid.

[0025] 4. This visual multifunctional negative pressure suction excision system is designed with an endoscope. When in use, the endoscope optical fiber is inserted into the outer knife tube to clearly observe the lesion to be excised, which is convenient for surgical operation.

[0026] 5. The present invention is scientifically and reasonably designed, and has the advantages of adjustable flow and pressure, safety and reliability, convenient operation, reduction of the spread of pathogens, and easy implementation. It is a highly innovative visual multifunctional negative pressure suction and peeling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 A schematic diagram showing the internal structure of the casing of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the negative pressure unit of the present invention;

[0030] Figure 4 It is a structural schematic diagram of an electric field sterilizer;

[0031] Figure 5 is a cross-sectional view of the electric field sterilizer of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the insulating support frame of the electric field sterilizer of the present invention;

[0033] Figure 7 This is a schematic diagram of the structure of the high voltage connection spring sheet of the electric field sterilizer of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the electric rotary cutting needle of the present invention;

[0035] Fig. 9 for Figure 8 A cross-sectional view of

[0036] Fig.10 It is a cross-sectional view of the feeding rotating part of the electric rotary cutting needle of the present invention;

[0037] Fig.11 It is a cross-sectional view of the electric rotary cutting needle driving part of the present invention.

[0038] Description of Reference Numerals

[0039] 1-endoscope display screen, 2-host display screen, 3-pressure regulating valve, 4-peristaltic pump, 5-housing, 6-liquid storage bottle, 7-foot switch, 8-electric rotary cutting needle, 9-endoscope, 10-buffer bottle, 11-anti-overflow bottle, 12-multi-stage vacuum pump group, 13-flow meter, 14-power board, 15-electric field disinfector, 16-muffler, 17-bottom plate, 18-solenoid valve, 19-negative pressure interface, 20-four-way pipe, 21-manifold , 22-vacuum pump, 23-gas inlet, 24-gas outlet, 25-flange, 26-flange fastening nut, 27-spacer sleeve fastening nut, 28-second high-voltage pole sealing fastening nut, 29-high-voltage pole, 30-connecting boss, 31-connecting spring, 32-high-voltage pole sealing fastening insulating nut, 33-insulating support frame, 34-high-voltage pole body, 35-ground pole body shell, 36-high-voltage connecting spring sheet, 37-insulating medium tube, 38-high voltage pole tube, 39-flange fastening screw, 40-sealing pad, 41-insulating spacer sleeve, 42-high voltage pole top connecting rod body, 43-first high voltage pole sealing fastening nut, 44-disinfection air gap, 45-high voltage connection spring sheet fastening nut, 46-disc support part, 47-cylindrical insertion part, 48-connecting part, 49-vertical penetration part, 50-outer knife tube, 51-outer knife tube seat, 52-buckle, 53-feed rotating part, 54 -drive unit, 55-peristaltic pump interface, 56-negative pressure pipeline interface, 57-feed drive housing, 58-inner knife tube, 59-inner knife seat, 60-guide groove, 61-shaft retaining ring, 62-screw sleeve, 63-feed gear, 64-rotating gear, 65-drive unit housing, 66-feed DC motor, 67-feed drive gear, 68-rotating drive gear, 69-rotating DC motor, 70-button trigger, 71-travel switch. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0041] A visual multifunctional negative pressure suction peeling system, the innovation of which is that it includes a housing 5, a negative pressure unit and an electric peeling needle 8, the negative pressure unit includes a multi-stage vacuum pump group 12, a buffer bottle 10, a flow meter 13, an electric field disinfector 15, a multi-way pipeline, a pressure regulating valve 3 and a liquid storage bottle 6, a host display screen 2 connected to a controller is embedded in the housing, an endoscope display screen 1 is installed on the upper part of the housing, the endoscope display screen is connected to the endoscope 9 signal, a multi-stage vacuum pump group is installed on the inner bottom plate 17 of the housing, and the multi-stage The negative pressure interface 19 of the vacuum pump group is connected to the negative pressure outlet of the buffer bottle through a pipeline, and the negative pressure inlet of the buffer bottle is connected to the gas outlet 24 of the electric field sterilizer through a pipeline installed with a flow meter. A multi-way pipeline is connected to the gas inlet 23 of the electric field sterilizer. The electric field sterilizer is installed on the power board 14. One branch of the multi-way pipeline is connected to the liquid storage bottle through the solenoid valve 18 connected to the anti-overflow bottle 11. One branch of the multi-way pipeline is connected to the pressure regulating valve installed on the casing. The liquid storage bottle is connected to the electric rotary cutting needle through a pipeline.

[0042] In order to increase the liquid storage capacity, there are two liquid storage bottles and two anti-overflow bottles, and the multi-way pipe is a four-way pipe 20. The first branch of the four-way pipe is connected to the electric field sterilizer, the second branch of the four-way pipe is connected to the pressure regulating valve, and the third branch and the fourth branch of the four-way pipe are connected to the anti-overflow bottle through the pipeline installed with the solenoid valve.

[0043] The multi-stage vacuum pump group includes four vacuum pumps 22, a solenoid valve, a manifold 21 and a muffler 16. A negative pressure interface is provided on the upper end surface of the manifold, and four interfaces are provided at intervals on the lower end surface of the manifold. A vacuum pump connected to a solenoid valve is installed on each interface, and a muffler is installed on each of the four vacuum pumps. A foot switch 7 for controlling the switch is connected to the multi-stage vacuum pump group. The multi-stage vacuum pump group can achieve negative pressure flow regulation of 0-90kpa to meet the use requirements of different operating equipment.

[0044] During the veneer operation, negative pressure adsorption will adsorb the lesion tissue and the like into the veneer hole of the veneer needle. In order to facilitate the observation of the veneer situation, it is sometimes necessary to repeatedly open and close the negative pressure to inhale more tissues for observation. However, closing the negative pressure cannot release the inhaled tissue from the veneer hole, which affects the observation effect. Therefore, the present invention designs a peristaltic pump 4 and a liquid bag (not shown in the figure). A peristaltic pump is installed on the front end surface of the housing, a liquid bag is connected to one end of the peristaltic pump through a pipeline, and the other end of the peristaltic pump is connected to the electric veneer needle through a pipeline. During operation, the peristaltic pump can be used to flush liquid into the veneer needle, and the inhaled tissue is released by the liquid, which is convenient for the doctor to observe and operate during the operation.

[0045] The electric field sterilizer includes a ground electrode shell 35, an insulating support frame 33, an insulating medium tube 37, a high-voltage electrode tube 38, a high-voltage electrode rod 29, a high-voltage connecting spring sheet 36, a high-voltage electrode sealing and fastening insulating nut 32, a connecting spring 31, a first high-voltage electrode sealing and fastening nut 43, an insulating spacer sleeve 41, a flange 25, a flange fastening screw 39, a spacer sleeve fastening nut 27 and a second high-voltage electrode sealing and fastening nut 28. A gas inlet and a gas outlet are respectively arranged at both ends of the ground electrode shell for air to enter for sterilization and to be discharged after sterilization. The high-voltage electrode tube and the insulating medium tube are nested inside and outside and coaxially arranged. The insulating medium tube is made of quartz glass, ceramics and other insulating materials. The two ends of the insulating medium tube are coaxially supported and installed inside the ground electrode shell through an insulating support frame. The two insulating support frames are located between the two air inlets and outlets. The gap between the insulating medium tube and the ground electrode shell A sterilizing air gap 44 is formed, a high-voltage pole is coaxially installed in the high-voltage pole tube, a high-voltage connecting spring sheet is installed on the high-voltage pole, the outer ring of the high-voltage connecting spring sheet abuts on the high-voltage pole tube, both ends of the high-voltage pole are extended from the insulating support frames at both ends, a high-voltage pole sealing and fastening insulating nut is installed on the high-voltage pole extending at one end, and the high-voltage pole sealing and fastening insulating nut is connected to the connecting boss 30 made of the earth pole body shell through a connecting spring, and the high-voltage pole extending at the other end is sequentially installed with a first high-voltage pole sealing and fastening nut abutting against the end of the insulating support frame and a T-shaped insulating spacer sleeve from the inside to the outside, a flange plate fixed by a spacer sleeve fastening nut is mounted on the insulating spacer sleeve, and the flange plate is connected to the earth pole body shell through a flange fastening screw, a flange fastening nut 26 is connected to the flange fastening screw, and a second high-voltage pole sealing and fastening nut installed on the high-voltage pole is provided on the outside of the insulating spacer sleeve.

[0046] The earth pole body shell is a stainless steel one-piece structure, which includes an earth pole tube body 35, an end plate arranged at one end of the earth pole tube body, the outer diameter of the end plate is greater than or equal to the outer diameter of the earth pole tube body, a connecting boss for installing a connecting spring is arranged at the inner middle position of the end plate, and a flange structure with an outward flange is arranged at the other end of the earth pole tube body, and flange holes connected to the flange plate are arranged at intervals on the flange structure, and the air inlet and outlet are arranged at both ends of the tube body of the earth pole tube body. During specific assembly, a fastening clamp made of conductive material (such as stainless steel, etc.) is installed on the outside of the earth pole tube body, and the fastening nut of the fastening clamp is directly grounded or connected to the ground pole of the power supply; the power supply outputs an AC high-voltage signal, wherein the high-voltage pole is connected to the high-voltage pole rod through a wire, and the ground pole is directly grounded or connected to the earth pole body shell.

[0047] The insulating support frame is made of a material with good heat resistance, pressure resistance and insulation properties, such as polytetrafluoroethylene material. It is composed of a disc support part 46 and a cylindrical insertion part 47. A cylindrical insertion part is coaxially arranged at the inner center position of the disc support part. The cylindrical insertion part is inserted into the end of the high-voltage pole tube. Air-passing notches are arranged at intervals on the outer edge of the disc support part, and a through hole for inserting the high-voltage pole is provided in the middle of the cylindrical insertion part.

[0048] The high-voltage pole is made of conductive material and is as corrosion-resistant as possible, such as stainless steel. In order to facilitate assembly, it is designed as a two-stage structure, that is, it is composed of a high-voltage pole body 34 and a high-voltage pole top connection rod body 42. The high-voltage pole body is installed on the insulating support frame. The high-voltage pole body is a structure with external thread design, which is convenient for the connection of the high-voltage pole sealing and fastening insulating nut, the high-voltage connection spring fastening nut and the high-voltage pole sealing and fastening nut; the high-voltage pole top connection rod body is composed of a top connection disk and a through rod horizontally arranged at the center position of the rear part of the top connection disk. The through rod is a structure with a front end polished rod and a rear end threaded structure. The top connection disk of the high-voltage pole top connection rod body is top-connected to the end face of the high-voltage pole body. The polished rod part of the through rod of the high-voltage pole top connection rod body is installed in the insulating spacer sleeve, and the second high-voltage pole sealing and fastening nut is threadedly connected on the threaded part that passes through the insulating spacer sleeve.

[0049] The two-stage high-voltage pole structure can realize the modular assembly of the sterilization device, that is, the high-voltage pole body is assembled with the insulating medium tube, the high-voltage pole tube, the high-voltage connecting spring, the insulating support frame, the high-voltage pole sealing and fastening insulating nut and the connecting spring to form a sterilization module. When the whole is assembled, the sterilization module is assembled in the ground pole body shell, and then the flange, the insulating spacer sleeve and the second high-voltage pole are assembled, and the second high-voltage pole is connected to the first high-voltage pole. At the same time, this two-stage structure is also convenient for adapting to ground pole body shells of different lengths to meet sterilization requirements.

[0050] The high-voltage connection spring sheet is formed by bending a spring sheet, and includes a vertical insertion portion 49 and connection portions 48 inclined upward at the upper and lower ends of the vertical insertion portion. The vertical insertion portion is inserted into the high-voltage pole body of the high-voltage pole through a through hole set in the middle thereof, and high-voltage connection spring sheet fastening nuts 45 threadedly connected to the high-voltage pole are set at both ends of the vertical insertion portion, and the two connection portions are crimped on the inner wall of the high-voltage pole tube. A sealing gasket 40 for gas sealing is sandwiched between the ground pole body shell and the flange on the insulating spacer sleeve.

[0051] During operation, the contaminated gas is sucked into the liquid storage bottle through the rotary cutting needle, and enters the electric field sterilizer through the overflow prevention bottle for disinfection: under the action of the alternating electric field (the frequency of the alternating electric field is 30K Hz, the electric field strength is 2200V / mm, and the air flow speed is 3M / S), the air is sterilized and disinfected (when the earth electrode body shell is forcibly grounded and the high-voltage pole is connected to a high-voltage AC signal, an alternating electric field is formed in the disinfection air gap. When the external alternating electric field is greater than or equal to 2000V / mm, the air in the disinfection air gap will be ionized to generate plasma. If the gas in the disinfection air gap contains organisms such as bacteria and viruses, in the plasma state, the organisms will react with the oxygen in the air to generate carbon dioxide and water, thereby achieving sterilization and disinfection, and the single disinfection rate can reach 99.99%), the sterilized air is discharged from the gas outlet, and finally discharged into the atmosphere by the muffler of the multi-stage vacuum pump group.

[0052] The electric rotary cutting needle comprises a feeding rotating part 53 and a driving part 54. Buckles 52 are provided at both ends of the upper part of the driving part housing, and the feeding rotating part is mounted on the driving part through the buckles.

[0053] The feed rotating part includes an inner knife tube 58, an outer knife tube 50, an outer knife tube seat 51, a feed drive housing 57, a guide groove 60, a screw sleeve 62, an inner knife seat 59, a feed gear 63 and a rotating gear 64. The outer knife tube seat is fixedly installed at the rear end of the outer knife tube, and the outer knife tube seat is threadedly connected to the front end of the feed drive housing. The feed drive housing is a structure with a mounting cavity in the middle, and a driving opening is provided at the bottom of the mounting cavity. The inner knife seat is coaxially passed through the inside of the feed drive housing, and the inner knife tube is fixedly installed at the front end of the inner knife seat. The inner knife tube is connected to the feed drive housing. The front end of the inner knife seat extends out and is installed inside the outer knife tube, the rear part of the inner knife seat extends out from the rear end of the feed drive housing, a negative pressure pipeline interface 56 and a peristaltic pump interface 55 are provided at the rear end of the inner knife seat, a rotating gear is connected to the outer wall of the inner knife seat, a feed gear is provided at the front end of the rotating gear, a screw sleeve is meshed on the inner wall of the feed gear, the screw sleeve is sleeved on the inner knife seat and is limited by a shaft retaining ring 61 provided on the outer wall of the inner knife seat, the screw sleeve is slidably installed in a guide groove formed on the inner wall of the installation cavity, and the rotating gear and the feed gear extend out from the drive opening;

[0054] The driving part includes a driving part housing 65, a feed DC motor 66, a feed drive gear 67, a rotating DC motor 69, a rotating drive gear 68, a button trigger 70 and a travel switch 71. The driving part housing includes a horizontal part and an inclined part which is arranged at the rear end of the horizontal part and is inclined downward and backward. A feed drive gear driven by the feed DC motor and a rotating drive gear driven by the rotating DC motor are arranged in the horizontal part. The feed drive gear is meshed with the feed gear, and the rotating drive gear is meshed with the rotating gear. A trigger mounting port is arranged on the inner end surface of the inclined part, and a button trigger is hinged at the trigger mounting port. A travel switch controlled by a trigger button is arranged in the inclined part, and the travel switch is connected to the controller signal arranged on the casing.

[0055] The working principle of the electric rotary cutting needle is:

[0056] Feeding action: the feed DC motor drives the feed drive gear to rotate, the feed drive gear meshes with the feed gear to rotate, the feed gear meshes with the screw sleeve connected with its inner wall thread, and the screw sleeve is limited in the guide groove, and the front end is limited to the rear of the shaft retaining ring. Therefore, the screw sleeve can drive the inner tool holder to make a forward and backward linear motion along the guide groove;

[0057] Rotational action:

[0058] The rotary DC motor drives the rotary drive gear to rotate, and the rotary drive gear meshes with the rotary gear to rotate. Since the rotary gear is keyed to the outer wall of the inner tool holder, the rotary gear can drive the inner tool holder to rotate, and will not interfere with the inner tool holder when it makes a linear motion.

[0059] During use, the doctor can select the surgical movement mode and the corresponding parameters of the relevant movement (stroke and speed) through the touch screen, and then press the button trigger on the electric rotary cutting needle during the operation to make the inner and outer surgical knife tubes work accordingly according to the required movement parameters and movement mode.

[0060] The purpose of the present invention is to provide a negative pressure suction rotary cutting system, which can achieve minimally invasive removal of lesions by rotary cutting and negative pressure. At the same time, the corresponding motion mode of rotary cutting is realized by electric mode, which can reduce the workload of the surgeon.

[0061] When working, the doctor holds the electric rotary cutting needle and makes a wound of about 5 mm at the corresponding position of the patient. Through the wound, the inner and outer knife tubes of the electric rotary cutting needle are inserted into the patient's body, the inner knife tube is pulled out, the outer knife tube is placed in the human body, and the fiber optic probe of the endoscope is inserted into the outer knife tube for observation to facilitate the determination of the rotary cutting position. After the determination is made, the endoscope is removed and the inner knife tube is inserted again. The doctor sets the movement speed and stroke as well as the turnover speed and stroke through the touch screen control interface, and selects the movement mode as "both movement" through the options. Other options include "only movement" and "only turnover". When the knife head reaches the lesion, the doctor presses the button trigger on the electric rotary cutting needle, and the button trigger triggers the travel switch. The travel switch transmits the signal to the control system through the control line, and the control system transmits the control signal to the electric rotary cutting needle through the control line according to the parameters set on the control interface on the touch screen.

[0062] Under the action of negative pressure, the accumulated fluid and dead flesh at the patient's lesion are sucked in through the square groove on the inner knife tube. Since the inner knife tube moves back and forth and repeatedly rotates relative to the outer knife tube, the dead flesh on the lesion is cut through the square grooves on the inner and outer knife tubes, and the cut dead flesh and accumulated fluid are sucked into the liquid storage bottle through negative pressure.

[0063] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A visual multifunctional negative pressure suction peeling system, characterized by: It includes a casing, a negative pressure unit and an electric peeling needle. The negative pressure unit includes a multi-stage vacuum pump group, a buffer bottle, a flow meter, an electric field sterilizer, a multi-way pipeline, a pressure regulating valve and a liquid storage bottle. The multi-stage vacuum pump group is installed on the inner bottom plate of the casing. The negative pressure interface of the multi-stage vacuum pump group is connected to the negative pressure outlet of the buffer bottle through a pipeline. The negative pressure inlet of the buffer bottle is connected to the gas outlet of the electric field sterilizer through a pipeline installed with a flow meter. A multi-way pipeline is connected to the gas inlet of the electric field sterilizer. One branch of the multi-way pipeline is connected to the liquid storage bottle through an electromagnetic valve, and one branch of the multi-way pipeline is connected to the pressure regulating valve installed on the casing. The liquid storage bottle is connected to the electric peeling needle through a pipeline.

2. A visual multifunctional negative pressure suction peeling system according to claim 1, characterized in that: The negative pressure unit further comprises an anti-overflow bottle, which is connected between the solenoid valve and the liquid storage bottle on the branch of the multi-channel pipeline.

3. A visual multifunctional negative pressure suction peeling system according to claim 2, characterized in that: There are two liquid storage bottles and two anti-overflow bottles, and the multi-way pipe is a four-way pipe. The first branch of the four-way pipe is connected to the electric field sterilizer, the second branch of the four-way pipe is connected to the pressure regulating valve, the third branch of the four-way pipe is connected to the first anti-overflow bottle through the pipe installed with the first solenoid valve, and the fourth branch of the four-way pipe is connected to the second anti-overflow bottle through the pipe installed with the second solenoid valve.

4. The visual multifunctional negative pressure suction peeling system according to claim 1, characterized in that: The multi-stage vacuum pump group includes four vacuum pumps, a solenoid valve, a manifold and a muffler. A negative pressure interface is provided on the upper end surface of the manifold, and four interfaces are provided at intervals on the lower end surface of the manifold. A vacuum pump connected to a solenoid valve is installed on each interface, and a muffler is installed on each of the four vacuum pumps.

5. The visual multifunctional negative pressure suction peeling system according to claim 1, characterized in that: It also includes a peristaltic pump and a liquid bag. The peristaltic pump is installed on the front end surface of the housing. One end of the peristaltic pump is connected to the liquid bag through a pipeline, and the other end of the peristaltic pump is connected to the electric rotary cutting needle through a pipeline.

6. The visual multifunctional negative pressure suction peeling system according to claim 1, characterized in that: The electric field sterilizer comprises a geodetic body shell, an insulating support frame, an insulating medium tube, a high-voltage electrode tube, a high-voltage electrode rod and a high-voltage connecting spring sheet. A gas inlet and a gas outlet are respectively arranged at the two ends of the geodetic body shell. An insulating medium tube is installed inside the geodetic body shell through the insulating support frame. The gap between the insulating medium tube and the geodetic body shell forms a disinfection air gap. A high-voltage electrode tube is coaxially sleeved inside the insulating medium tube. A high-voltage electrode rod is inserted inside the high-voltage electrode tube. A high-voltage connecting spring sheet with an edge abutting against the high-voltage electrode tube is installed on the high-voltage electrode rod. One end of the high-voltage electrode rod extends out from one end of the geodetic body shell. A wire connected to a power board is connected to the extended high-voltage electrode rod.

7. A visual multifunctional negative pressure suction peeling system according to claim 6, characterized in that: The insulating support frame is composed of a disc support part and a cylindrical insertion part. The cylindrical insertion part is coaxially arranged at the inner center position of the disc support part. The cylindrical insertion part is inserted into the end of the high-voltage pole tube. Air-passing notches are arranged at intervals on the outer edge of the disc support part, and a through hole for inserting the high-voltage pole is provided in the middle of the cylindrical insertion part.

8. The visual multifunctional negative pressure suction peeling system according to claim 6, characterized in that: The high-voltage connecting spring sheet is formed by bending a spring sheet, and includes a vertical penetration portion and upwardly inclined connecting portions at the upper and lower ends of the vertical penetration portion. The vertical penetration portion is penetrated on the high-voltage pole through a through hole arranged in the middle thereof, and high-voltage connecting spring sheet fastening nuts threadedly connected to the high-voltage pole are arranged at both ends of the vertical penetration portion, and the two connecting portions are crimped on the inner wall of the high-voltage pole tube.

9. The visual multifunctional negative pressure suction peeling system according to claim 1, characterized in that: The electric rotary cutting needle comprises a feeding rotating part and a driving part. Buckles are arranged at both ends of the upper part of the driving part housing. The feeding rotating part is mounted on the driving part through the buckles. The feed rotating part includes an inner knife tube, an outer knife tube, an outer knife tube seat, a feed drive housing, a guide groove, a screw sleeve, a feed gear and a rotating gear. The outer knife tube seat is fixedly installed at the rear end of the outer knife tube, and the outer knife tube seat is threadedly connected to the front end of the feed drive housing. The feed drive housing is a structure with a mounting cavity in the middle, and a driving opening is provided at the bottom of the mounting cavity. The inner knife seat is coaxially penetrated inside the feed drive housing, and the inner knife tube is fixedly installed at the front end of the inner knife seat. The inner knife tube extends from the front end of the feed drive housing and penetrates the mounting cavity. Inside the outer knife tube, the rear part of the inner knife seat extends out from the rear end of the feed drive housing, a negative pressure pipeline interface and a peristaltic pump interface are arranged at the rear end of the inner knife seat, a rotating gear is connected to the outer wall of the inner knife seat, a feed gear is arranged at the front end of the rotating gear, a screw sleeve is meshed on the inner wall of the feed gear, the screw sleeve is sleeved on the inner knife seat and is limited by a shaft retaining ring arranged on the outer wall of the inner knife seat, the screw sleeve is slidably installed in a guide groove formed on the inner wall of the installation cavity, and the rotating gear and the feed gear extend out from the drive opening; The driving part includes a driving part housing, a feed DC motor, a feed drive gear, a rotating DC motor, a rotating drive gear, a button trigger and a travel switch. The driving part housing includes a horizontal part and an inclined part which is arranged at the rear end of the horizontal part and is inclined downward and backward. A feed drive gear driven by the feed DC motor and a rotating drive gear driven by the rotating DC motor are arranged in the horizontal part. The feed drive gear is meshed with the feed gear, and the rotating drive gear is meshed with the rotating gear. A trigger mounting port is arranged on the inner end surface of the inclined part, and a button trigger is hinged at the trigger mounting port. A travel switch controlled by a trigger button is arranged in the inclined part, and the travel switch is connected to the controller signal arranged on the casing.

10. A visual multifunctional negative pressure suction peeling system according to claim 9, characterized in that: It also includes an endoscope, the optical fiber probe of the endoscope is clamped on the driving part shell of the electric rotary cutting needle, and the touch screen of the endoscope is connected with the endoscope display screen placed on the shell by signal.

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