Plasma negative pressure suction device with automatic pressure regulating function

Abstract

The invention belongs to the technical field of medical instruments, and relates to a plasma negative pressure suction device with an automatic pressure regulating function, which comprises a casing, a liquid bottle and a negative pressure unit, the negative pressure unit comprises a vacuum pump, a negative pressure interface and a vacuum meter, and the plasma negative pressure suction device is characterized in that the negative pressure unit further comprises a negative pressure regulating valve and an electric field sterilizer, an electric field sterilizer is connected to the pipeline between the vacuum pump and the negative pressure connector, a negative pressure adjusting valve is further connected to the vacuum pump through a pipeline, and the negative pressure adjusting valve is electrically connected with a pressure adjusting key arranged on the machine shell. The plasma negative pressure suction device with the automatic pressure regulating function is scientific and reasonable in design, has the advantages of being capable of automatically regulating negative pressure, safe, reliable, capable of reducing spreading of germs and easy to implement, and has high innovativeness.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices and relates to an aspirator, in particular to a plasma negative pressure aspiration device with an automatic voltage regulation function. Background Art

[0002] Negative pressure aspirator is an instrument used to remove bleeding, exudate, pus, and contents of chest organs during surgery to make the surgery clear and reduce the chance of contamination. Different negative pressure values ​​need to be set according to the corresponding surgical operation. The more commonly used negative pressure values ​​include 20kpa, 40kap, 60kpa and 80kpa. The existing technology needs to be set manually, which is time-consuming, labor-intensive, and inconvenient to operate.

[0003] At the same time, if the suction device is used on patients with infectious diseases, while sucking out residual liquid through negative pressure, it will also suck out gases containing viruses and bacteria. After the attracted gases are directly discharged into the atmosphere 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

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a plasma negative pressure suction device with automatic negative pressure regulation, which is safe and reliable, reduces the spread of germs, and is easy to implement and has an automatic pressure regulation function.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] A plasma negative pressure suction device with automatic pressure regulation function comprises a casing, a liquid bottle and a negative pressure unit, wherein the liquid bottle is installed on the side of the casing, and the negative pressure unit is installed inside the casing, the negative pressure unit comprises a vacuum pump, a negative pressure interface and a vacuum gauge, the negative pressure interface and the vacuum gauge are connected to the vacuum pump through a pipeline, the vacuum gauge is embedded in the casing, the negative pressure interface extends from the top of the casing, the liquid bottle is connected to the negative pressure interface through a pipeline with a filter installed, and is characterized in that: the negative pressure unit also comprises a negative pressure regulating valve and an electric field sterilizer, the electric field sterilizer is connected to the pipeline between the vacuum pump and the negative pressure interface, the vacuum pump is also connected to a negative pressure regulating valve through a pipeline, and the negative pressure regulating valve is electrically connected to a pressure regulating button arranged on the casing.

[0007] Moreover, the negative pressure regulating valve comprises a mounting frame, a pressure regulating motor, a connecting sleeve, a valve sleeve, a valve core, and a limit switch. A pressure regulating motor is mounted at the bottom of the mounting frame, and a driving shaft of the pressure regulating motor extends into the interior of the mounting frame. An inverted T-shaped connecting sleeve is driven and mounted on the driving shaft. A valve core is fixed inside the connecting sleeve by a pin. The valve core is threadedly connected inside the valve sleeve formed on the top of the mounting frame. A limit switch is mounted above the horizontal portion of the connecting sleeve on the mounting frame.

[0008] The valve sleeve is threadedly installed on the top of the frame, and the valve sleeve includes a valve core active cavity and a vacuum pump interface made on the top of the valve core active cavity. The vacuum pump interface is connected to the negative pressure port on the vacuum pump through a pipeline, and an exhaust port is provided on the valve core active cavity.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] The advantages and positive effects of the present invention are:

[0013] 1. This plasma negative pressure suction device with automatic pressure regulation function realizes the purpose of automatic pressure regulation through the setting of negative pressure regulating valve. According to the use needs, the corresponding pressure output can be realized by operating the corresponding case, avoiding the inconvenience caused by the previous manual knob adjustment; through the setting of electric field disinfector 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.

[0014] 2. The present invention is scientifically and reasonably designed, has the advantages of automatic negative pressure adjustment, safety and reliability, reduction of the spread of germs, and easy implementation. It is a highly innovative plasma negative pressure suction device with automatic pressure adjustment function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention without the casing;

[0017] Figure 3 for Figure 2 A top view of

[0018] Figure 4 It is a structural schematic diagram of the negative pressure regulating valve of the present invention;

[0019] Figure 5 It is a structural schematic diagram of an electric field sterilizer;

[0020] Figure 6 is a cross-sectional view of the electric field sterilizer of the present invention;

[0021] Figure 7 It is a structural schematic diagram of the insulating support frame of the electric field sterilizer of the present invention;

[0022] Figure 8 It is a schematic structural diagram of the high voltage connecting spring sheet of the electric field sterilizer of the present invention.

[0023] Description of Reference Numerals

[0024] 1-liquid bottle, 2-filter, 3-negative pressure interface, 4-vacuum gauge, 5-housing, 6-pressure adjustment button, 7-negative pressure regulating valve, 8-vacuum pump, 9-electric field sterilizer, 10-valve sleeve, 11-exhaust port, 12-valve core, 13-limit switch, 14-installation frame, 15-horizontal part of the connecting sleeve, 16-pressure regulating motor,

[0025] 17-gas inlet, 18-earth pole body shell, 19-gas outlet, 20-flange, 21-flange fastening nut, 22-spacer sleeve fastening nut, 23-second high-voltage pole sealing fastening nut, 24-high-voltage pole, 25-connecting boss, 26-connecting spring, 27-high-voltage pole sealing fastening insulating nut, 28-insulating support frame, 29-high-voltage pole body, 30-high-voltage connecting spring sheet, 31-insulating medium pipe, 32-high-voltage pole tube, 33-flange fastening screw, 34-sealing gasket, 35-insulating spacer sleeve, 36-high-voltage pole top connecting rod body, 37-first high-voltage pole sealing fastening nut, 38-disinfection air gap, 39-high-voltage connecting spring sheet fastening nut, 40-disc support part, 41-cylindrical insertion part, 42-connecting part, 43-vertical penetration part. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0027] A plasma negative pressure suction device with automatic pressure regulation function comprises a casing 5, a liquid bottle 1 and a negative pressure unit, wherein a liquid bottle is installed on the side of the casing, and a negative pressure unit is installed inside the casing, wherein the negative pressure unit comprises a vacuum pump 8, a negative pressure interface 3 and a vacuum gauge 4, wherein the negative pressure interface and the vacuum gauge are connected to the vacuum pump through a pipeline, wherein the vacuum gauge is embedded in the casing, wherein the negative pressure interface extends from the top of the casing, wherein the outlet of the liquid bottle is connected to the negative pressure interface through a pipeline on which a filter 2 is installed, wherein the inlet of the liquid bottle is connected to the human body through the pipeline, wherein the innovation lies in that the negative pressure unit also comprises a negative pressure regulating valve 7 and an electric field sterilizer 9, wherein the electric field sterilizer is connected to the pipeline between the vacuum pump and the negative pressure interface, wherein a negative pressure regulating valve is also connected to the vacuum pump through a pipeline, and wherein the negative pressure regulating valve is electrically connected to a pressure regulating button 6 provided on the casing.

[0028] The negative pressure regulating valve comprises a mounting frame 14, a pressure regulating motor 16, a connecting sleeve, a valve sleeve 10, a valve core 12 and a limit switch 13. A pressure regulating motor is mounted at the bottom of the mounting frame, and a driving shaft of the pressure regulating motor extends into the interior of the mounting frame. An inverted T-shaped connecting sleeve is driven and mounted on the driving shaft. A valve core is fixed inside the connecting sleeve by a pin. The valve core is threadedly connected inside the valve sleeve formed on the top of the mounting frame. A limit switch is mounted on the horizontal portion 15 of the connecting sleeve on the mounting frame.

[0029] The valve sleeve is threadedly installed on the top of the frame, and the valve sleeve includes a valve core active cavity and a vacuum pump interface made on the top of the valve core active cavity. The vacuum pump interface is connected to the negative pressure port on the vacuum pump through a pipeline, and an exhaust port 11 is provided on the valve core active cavity.

[0030] Select the pressure value as needed and press the pressure regulating button. The pressure regulating button includes four gears: 20kPa, 40kap, 60kPa and 80kPa. The microprocessor on the main control board of the aspirator controls the operation of the pressure regulating motor by comparing the real-time measurement value and the set value of the pressure sensor on the vacuum pump pipeline. The pressure regulating motor drives the valve core to adjust the size of the venting port, thereby controlling the pressure.

[0031] The electric field sterilizer comprises a ground electrode housing 18, an insulating support frame 28, an insulating medium tube 31, a high-voltage electrode tube 32, a high-voltage electrode rod 24, a high-voltage connecting spring sheet 30, a high-voltage electrode sealing and fastening insulating nut 27, a connecting spring 26, a first high-voltage electrode sealing and fastening nut 37, an insulating spacer sleeve 35, a flange 20, a flange fastening screw 33, a spacer sleeve fastening nut 22 and a second high-voltage electrode sealing and fastening nut 23. A gas inlet 17 and a gas outlet 19 are respectively arranged at both ends of the ground electrode housing 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 other insulating materials such as quartz glass and ceramics. The two ends of the insulating medium tube are coaxially supported and installed inside the ground electrode housing through an insulating support frame. The two insulating support frames are located between the two air inlets and outlets. The air between the insulating medium tube and the ground electrode housing is The gap forms a disinfection air gap 38, 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 rod, the outer ring of the high-voltage connecting spring sheet abuts on the high-voltage pole tube, both ends of the high-voltage pole rod 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 25 made of the earth pole body shell through a connecting spring, and the high-voltage pole extending at the other end is sequentially installed from the inside to the outside 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, a flange plate fixed by a spacer sleeve fastening nut is mounted on the insulating spacer sleeve, the flange plate is connected to the earth pole body shell through a flange fastening screw, a flange fastening nut 21 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.

[0032] The earth pole body shell is a stainless steel one-piece structure, which includes an earth pole tube body, 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.

[0033] 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 40 and a cylindrical insertion part 41. 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.

[0034] 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 29 and a high-voltage pole top connection rod body 36. 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 thread. 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.

[0035] 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.

[0036] The high-voltage connection spring sheet is formed by bending a spring sheet, and includes a vertical insertion portion 43 and connection portions 42 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 39 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 34 for gas sealing is sandwiched between the ground pole body shell and the flange on the insulating spacer sleeve.

[0037] During operation, the contaminated gas is sucked into the liquid bottle through the negative pressure interface, and enters the electric field sterilizer through the pipeline 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 airflow 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%), and the sterilized air is discharged from the positive pressure port of the vacuum pump.

[0038] 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 plasma negative pressure suction device with automatic pressure regulation function, comprising a housing, a liquid bottle and a negative pressure unit, wherein a liquid bottle is installed on the side of the housing, and a negative pressure unit is installed inside the housing, wherein the negative pressure unit comprises a vacuum pump, a negative pressure interface and a vacuum gauge, wherein the negative pressure interface and the vacuum gauge are connected to the vacuum pump through a pipeline, wherein the vacuum gauge is embedded in the housing, wherein the negative pressure interface extends from the top of the housing, wherein the liquid bottle is connected to the negative pressure interface through a pipeline equipped with a filter, wherein: The negative pressure unit also includes a negative pressure regulating valve and an electric field sterilizer. The electric field sterilizer is connected to the pipeline between the vacuum pump and the negative pressure interface. The vacuum pump is also connected to a negative pressure regulating valve through a pipeline. The negative pressure regulating valve is electrically connected to the pressure regulating button arranged on the casing.

2. The plasma negative pressure suction device with automatic voltage regulation function according to claim 1, characterized in that: The negative pressure regulating valve comprises a mounting frame, a pressure regulating motor, a connecting sleeve, a valve sleeve, a valve core and a limit switch. A pressure regulating motor is mounted at the bottom of the mounting frame, and a driving shaft of the pressure regulating motor extends into the interior of the mounting frame. An inverted T-shaped connecting sleeve is driven and mounted on the driving shaft. A valve core is fixed inside the connecting sleeve by a pin. The valve core is threadedly connected inside the valve sleeve formed at the top of the mounting frame. A limit switch is mounted above the horizontal portion of the connecting sleeve on the mounting frame. The valve sleeve is threadedly installed on the top of the frame, and the valve sleeve includes a valve core active cavity and a vacuum pump interface made on the top of the valve core active cavity. The vacuum pump interface is connected to the negative pressure port on the vacuum pump through a pipeline, and an exhaust port is provided on the valve core active cavity.

3. The plasma negative pressure suction device with automatic voltage regulation function 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.

4. The plasma negative pressure suction device with automatic voltage regulation function according to claim 3, 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.

5. The plasma negative pressure suction device with automatic voltage regulation function according to claim 3, 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.

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