Plasma negative pressure aspirator with automatic pressure regulating function

Abstract

The utility model belongs to the technical field of medical instruments, and relates to a plasma negative pressure aspirator 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 aspirator 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 aspirator with the automatic pressure regulating function has the advantages of being scientific and reasonable in design, capable of automatically regulating negative pressure, safe, reliable, capable of reducing spreading of germs and easy to achieve, and has high innovativeness.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical instruments, and relates to a suction apparatus, in particular to a plasma negative pressure suction apparatus with automatic pressure regulating function. BACKGROUND

[0002] The negative pressure suction apparatus is used for sucking and removing bleeding, exudate, pus and contents in thoracic organs during operation, so that the operation is clear and the pollution opportunity is reduced. According to corresponding operation, different negative pressure values need to be set, and the commonly used negative pressure values include four gears of 20kpa, 40kap, 60kpa and 80kpa. The prior art needs to be set manually by artificial hand, and there are problems of time-consuming and laborious, inconvenient operation and the like.

[0003] Meanwhile, if the suction apparatus acts on a patient with infectious diseases, the gas with viruses and bacteria is also sucked while the residual liquid is sucked by the negative pressure, and after the sucked gas is directly discharged to the atmosphere without treatment, the air is full of viruses and bacteria, which threatens the health of people around. SUMMARY

[0004] The utility model aims at overcoming the defects of the prior art, and provides a plasma negative pressure suction apparatus with automatic pressure regulating function, which is safe and reliable, reduces the spread of bacteria and is easy to implement.

[0005] The utility model solves the technical problem by adopting the following technical scheme:

[0006] A plasma negative pressure suction apparatus with automatic pressure regulating function, comprising a casing, a liquid bottle and a negative pressure unit, the liquid bottle is installed on the side of the casing, the negative pressure unit is installed in 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 is extended from the top of the casing, the liquid bottle is connected to the negative pressure interface through a pipeline with a filter, characterized by: the negative pressure unit further 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 negative pressure regulating valve is further connected to the vacuum pump through a pipeline, and the negative pressure regulating valve is electrically connected to the 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, the pressure regulating motor is mounted at the bottom of the mounting frame, the driving shaft of the pressure regulating motor extends into the mounting frame, a reverse T-shaped connecting sleeve is mounted on the driving shaft, the valve core is fixed in the connecting sleeve through a pin, the valve core is screwed in the valve sleeve at the top of the mounting frame, and the limit switch is mounted above the horizontal part of the connecting sleeve on the mounting frame.

[0008] The valve sleeve is screwed at the top of the mounting frame, the valve sleeve comprises a valve core movable cavity and a vacuum pump interface arranged at the top of the valve core movable cavity, the vacuum pump interface is connected with a negative pressure port of a vacuum pump through a pipeline, and an exhaust port is arranged on the valve core movable cavity.

[0009] Moreover, the electric field sterilizer comprises a ground pole body shell, an insulating support frame, an insulating medium pipe, a high-voltage pole pipe, a high-voltage pole rod and a high-voltage connecting spring sheet, a gas inlet and a gas outlet are arranged at two ends of the ground pole body shell respectively, the insulating medium pipe is mounted in the ground pole body shell through the insulating support frame, a sterilization air gap is formed between the insulating medium pipe and the ground pole body shell, the high-voltage pole pipe is coaxially sleeved in the insulating medium pipe, the high-voltage pole rod is arranged in the high-voltage pole pipe, the high-voltage connecting spring sheet is arranged on the high-voltage pole rod and abuts against the high-voltage pole pipe, one end of the high-voltage pole rod extends out of the ground pole body shell, and a wire connected to a power panel is arranged on the high-voltage pole rod.

[0010] Moreover, the insulating support frame comprises a disc support part and a cylindrical insertion part, the cylindrical insertion part is coaxially arranged at the center of the inner side of the disc support part, the cylindrical insertion part is inserted into the end part of the high-voltage pole pipe, air gap notches are arranged at the outer edge of the disc support part at intervals, and a through hole for the high-voltage pole rod is arranged in the middle part of the cylindrical insertion part.

[0011] Moreover, the high-voltage connecting spring sheet is bent from one spring sheet and comprises a vertical insertion part and two connecting parts which are inclined upward at the upper and lower ends of the vertical insertion part, the vertical insertion part is inserted into the high-voltage pole rod through the through hole arranged in the middle part of the vertical insertion part, high-voltage connecting spring sheet fastening nuts are arranged at the two ends of the vertical insertion part and are screwed on the high-voltage pole rod, and the two connecting parts are press-connected to the inner wall of the high-voltage pole pipe.

[0012] The utility model discloses the advantages and positive effects are:

[0013] 1、The plasma negative pressure aspirator with automatic pressure regulating function, through the setting of the negative pressure regulating valve, realizes the purpose of automatic pressure regulating, according to the use needs, the corresponding case is operated, and the corresponding pressure output is realized, avoids the inconvenience problem caused by the previous manual knob adjusting, through the setting of the electric field sterilizer on the negative pressure pipeline, the gas of negative pressure suction can be sterilized and filtered, the bacteria in the gas are killed and then discharged into the atmosphere, and the spread of bacteria is avoided.

[0014] 2、The utility model discloses scientific and reasonable design has the advantages of negative pressure automatic regulation, safe and reliable, reduce the spread of bacteria, easy to realize, is a kind of plasma negative pressure aspirator with automatic pressure regulating function with higher innovation. SHEET

[0015] Figure 1 It is the structure schematic diagram of the utility model;

[0016] Figure 2 It is the structure schematic diagram of the utility model after removing the casing;

[0017] Figure 3 It is Figure 2 The top view;

[0018] Figure 4 It is the structure schematic diagram of negative pressure regulating valve of the utility model;

[0019] Figure 5 It is the structure schematic diagram of electric field sterilizer;

[0020] Figure 6 It is the sectional view of electric field sterilizer of the utility model;

[0021] Figure 7 It is the structure schematic diagram of electric field sterilizer insulating support frame of the utility model;

[0022] Figure 8 It is the structure schematic diagram of electric field sterilizer high pressure connecting spring piece of the utility model.

[0023] Explanation of attached drawings

[0024] 1-liquid bottle, 2-filter, 3-negative pressure interface, 4-vacuum gauge, 5-casing, 6-pressure regulating 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-mounting frame, 15-horizontal part of connecting sleeve, 16-pressure regulating motor,

[0025] 17-gas inlet, 18-ground electrode outer shell, 19-gas outlet, 20-flange, 21-flange fastening nut, 22-separation sleeve fastening nut, 23-second high-voltage electrode sealing fastening nut, 24-high-voltage electrode rod, 25-connection boss, 26-connection spring, 27-high-voltage electrode sealing fastening insulation nut, 28-insulation support frame, 29-high-voltage electrode rod body, 30-high-voltage connection spring sheet, 31-insulation medium tube, 32-high-voltage electrode tube, 33-flange fastening screw, 34-sealing gasket, 35-insulation separation sleeve, 36-high-voltage electrode top connecting rod body, 37-first high-voltage electrode sealing fastening nut, 38-sterilization air gap, 39-high-voltage connection spring sheet fastening nut, 40-disc support part, 41-cylindrical plug-in part, 42-connection part, 43-vertical through part. DETAILED DESCRIPTION

[0026] The embodiments of the utility model will be further described in combination with the drawings:

[0027] A plasma negative pressure aspirator with automatic pressure regulating function, comprising a casing 5, a liquid bottle 1 and a negative pressure unit, a liquid bottle is installed on the side of the casing, and a negative pressure unit is installed in the casing, the negative pressure unit comprises a vacuum pump 8, a negative pressure interface 3 and a vacuum gauge 4, 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, and the negative pressure interface extends from the top of the casing, the outlet of the liquid bottle is connected to the negative pressure interface through a pipeline on which a filter 2 is installed, and the inlet of the liquid bottle is connected to a human body through a pipeline, and the utility model has the advantages of simple structure, convenient use, high safety and high reliability.

[0028] The negative pressure regulating valve comprises an installation frame 14, a pressure regulating motor 16, a connecting sleeve, a valve sleeve 10, a valve core 12 and a limit switch 13, the pressure regulating motor is installed at the bottom of the installation frame, the driving shaft of the pressure regulating motor extends into the inside of the installation frame, a connecting sleeve in the shape of inverted T is drivenly installed on the driving shaft, the valve core is fixedly installed in the inside of the connecting sleeve through a pin, and the valve core is screw-connected in the valve sleeve at the top end of the installation frame, and the limit switch is installed above the horizontal part 15 of the connecting sleeve on the installation frame.

[0029] The valve sleeve is screw-connected at the top of the installation frame, the valve sleeve comprises a valve core movable cavity and a vacuum pump interface formed at the top of the valve core movable 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 formed in the valve core movable cavity.

[0030] According to the need to select the pressure value, press the pressure regulating button, the pressure regulating button includes 20kpa, 40kap, 60kpa and 80kpa four gears, the microprocessor on the aspirator master control board controls 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 air outlet size, thereby controlling the pressure.

[0031] The electric field sterilizer comprises a ground electrode body shell 18, an insulating support frame 28, an insulating medium pipe 31, a high-voltage electrode pipe 32, a high-voltage electrode rod 24, a high-voltage connection spring sheet 30, a high-voltage electrode sealing fastening insulating nut 27, a connection spring 26, a first high-voltage electrode sealing fastening nut 37, an insulating spacer sleeve 35, a flange plate 20, a flange fastening screw 33, a spacer sleeve fastening nut 22 and a second high-voltage electrode sealing fastening nut 23, a gas inlet 17 and a gas outlet 19 are arranged at two ends of the ground electrode body shell respectively for air entering sterilization and being discharged after sterilization, the high-voltage electrode pipe and the insulating medium pipe are coaxially arranged in and out of each other, the insulating medium pipe is made of quartz glass, ceramic or other insulating materials, two ends of the insulating medium pipe are coaxially supported and installed in the ground electrode body shell through the insulating support frames, the two insulating support frames are located between the two air inlets and outlets, a sterilization air gap 38 is formed between the insulating medium pipe and the ground electrode body shell, the high-voltage electrode rod is coaxially arranged in the high-voltage electrode pipe, the high-voltage connection spring sheet is arranged on the high-voltage electrode rod, the outer ring of the high-voltage connection spring sheet abuts against the high-voltage electrode pipe, both ends of the high-voltage electrode rod are stretched out by the insulating support frames at both ends, the high-voltage electrode sealing fastening insulating nut is installed on the high-voltage electrode rod stretched out at one end, the high-voltage electrode sealing fastening insulating nut is connected to the connecting boss 25 of the ground electrode body shell through the connection spring, the first high-voltage electrode sealing fastening nut abutting against the end of the insulating support frame and the T-shaped insulating spacer sleeve are installed on the high-voltage electrode rod stretched out at the other end from inside to outside, the flange plate is sleeved on the insulating spacer sleeve and fixed by the spacer sleeve fastening nut, the flange plate is connected to the ground electrode body shell through the flange fastening screw, the flange fastening nut 21 is connected to the flange fastening screw, and the second high-voltage electrode sealing fastening nut is arranged on the high-voltage electrode rod outside the insulating spacer sleeve.

[0032] The ground pole body shell is integrally formed by stainless steel, which comprises a ground pole body, an end plate arranged at one end of the ground pole body, the outer diameter of the end plate being greater than or equal to the outer diameter of the ground pole body, a connecting boss for mounting a connecting spring arranged at the middle position of the inner side of the end plate, a turn-up structure with an outward turn-up edge arranged at the other end of the ground pole body, flange holes for connecting the flange plate arranged at intervals on the turn-up structure, and air inlets and outlets arranged at both ends of the tube body of the ground pole body. In the specific assembly, a fastening clamp made of conductive material (such as stainless steel) is mounted outside the ground pole body, the fastening nut of the fastening clamp is directly grounded or connected to the ground pole of the power supply, and the power supply outputs an alternating 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 ground pole body shell.

[0033] The insulating support frame is made of a material with good heat resistance, voltage resistance and insulation, such as polytetrafluoroethylene material, which is composed of a disc support part 40 and a cylindrical plug-in part 41, the cylindrical plug-in part is coaxially arranged at the center position of the inner side of the disc support part, the cylindrical plug-in part is plugged into the end of the high-voltage pole tube, air gap notches are arranged at intervals on the outer edge of the disc support part, and a through hole for passing the high-voltage pole rod is arranged at the middle part of the cylindrical plug-in part.

[0034] The high-voltage pole rod is made of conductive material and is resistant to corrosion as much as possible, such as stainless steel material. In order to facilitate assembly, it is designed as a two-section structure, that is, it is composed of a high-voltage pole rod body 29 and a high-voltage pole top connecting rod body 36. The high-voltage pole rod body is plugged into the insulating support frame, the high-voltage pole rod body is designed as a threaded structure on the outside, which facilitates the connection of the high-voltage pole sealing and fastening insulating nut, the high-voltage connecting spring fastening nut and the high-voltage pole sealing and fastening nut. The high-voltage pole top connecting rod body is composed of a top connecting disc and a through rod horizontally arranged at the center position of the rear part of the top connecting disc. The through rod is a structure with a light rod at the front end and a threaded structure at the rear end. The top connecting disc of the high-voltage pole top connecting rod body is connected to the end face of the high-voltage pole rod body. The light rod part of the through rod of the high-voltage pole top connecting rod body is plugged into the insulating spacer sleeve, and the threaded part of the through rod that protrudes out of the insulating spacer sleeve is threadedly connected with a second high-voltage pole sealing and fastening nut.

[0035] The two-section structure of the high-voltage pole rod can realize the modular assembly of the sterilization device. That is, the high-voltage pole rod body, the insulating medium tube, the high-voltage pole, the high-voltage connecting spring, the insulating support frame, the high-voltage pole sealing and fastening insulating nut and the connecting spring are assembled into one body to form a sterilization module. In the overall assembly, the sterilization module is assembled into the ground pole body shell, and then the flange plate, the insulating spacer sleeve and the second high-voltage pole rod are assembled. The second high-voltage pole rod is connected to the first high-voltage pole rod. At the same time, this two-section structure also facilitates the adaptation of ground pole body shells of different lengths to meet the sterilization requirements.

[0036] The high-voltage connecting spring piece is bent from a spring piece and comprises a vertical penetrating part 43 and two connecting parts 42 which are inclined upward at the upper and lower ends of the vertical penetrating part, the vertical penetrating part is penetrated on the high-voltage pole body of the high-voltage pole through the hole penetratingly arranged in the middle part of the vertical penetrating part, the high-voltage connecting spring piece fastening nut 39 which is screwed on the high-voltage pole is arranged at the two ends of the vertical penetrating part, and the two connecting parts are crimped on the inner wall of the high-voltage pole.

[0037] In work, the bacteria-containing gas is sucked into the liquid bottle through the negative pressure interface, enters the electric field sterilizer through the pipeline and is sterilized: under the action of the alternating electric field (the frequency of the alternating electric field is 30 KHz, the electric field strength is 2200 V / mm, and the air flow speed is 3 M / S), the air is sterilized (when the high-voltage pole is connected with the high-voltage alternating current signal, the alternating electric field is formed in the sterilization air gap, when the external alternating electric field is greater than or equal to 2000 V / mm, the air in the sterilization air gap is ionized to generate plasma, if the gas in the sterilization air gap contains bacteria, viruses and other organisms, the organisms will react with oxygen in the air in the plasma state to generate carbon dioxide and water, so that sterilization and disinfection are realized, and the single-time sterilization and disinfection rate can reach 99.99%), and the sterilized air is discharged from the vacuum pump positive pressure port.

[0038] Although the embodiments and drawings of the utility model are disclosed for the purpose of illustration, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, therefore, the scope of the utility model is not limited to the contents disclosed by the embodiments and drawings.

Claims

1. A plasma negative pressure aspirator with automatic pressure adjustment function, comprising a housing, a liquid bottle, and a negative pressure unit, wherein the liquid bottle is installed on the side of the housing, and the negative pressure unit is installed inside the housing, the negative pressure unit comprising a vacuum pump, a negative pressure interface, and a vacuum gauge, the negative pressure interface and the vacuum gauge being connected to the vacuum pump via pipes, the vacuum gauge being embedded in the housing, the negative pressure interface extending from the top of the housing, and the liquid bottle being connected to the negative pressure interface via a pipe with a filter installed, characterized in that: The negative pressure unit further comprises a negative pressure regulating valve and an electric field sterilizer, the electric field sterilizer is connected on the pipeline between the vacuum pump and the negative pressure interface, and the negative pressure regulating valve is connected on the vacuum pump through a pipeline, and the negative pressure regulating valve is electrically connected with the pressure regulating button arranged on the shell.

2. The plasma suction device with automatic pressure regulating 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, the pressure regulating motor is mounted at the bottom of the mounting frame, the driving shaft of the pressure regulating motor extends into the mounting frame, a connecting sleeve in the shape of an inverted T is driven and mounted on the driving shaft, the valve core is fixed in the connecting sleeve through a pin, and the valve core is threadedly connected in the valve sleeve arranged at the top of the mounting frame; and the limit switch is mounted above the horizontal part of the connecting sleeve on the mounting frame. The valve sleeve is threadedly mounted at the top of the mounting frame, the valve sleeve comprises a valve core movable cavity and a vacuum pump interface arranged at the top of the valve core movable cavity, the vacuum pump interface is connected with the negative pressure port on the vacuum pump through a pipeline, and an exhaust port is arranged on the valve core movable cavity.

3. The plasma suction device with automatic pressure regulating function according to claim 1, characterized in that: The electric field sterilizer comprises a ground electrode body shell, an insulating support frame, an insulating medium pipe, a high-voltage electrode pipe, a high-voltage electrode rod and a high-voltage connecting spring sheet, a gas inlet and a gas outlet are arranged at two ends of the ground electrode body shell respectively, the insulating medium pipe is mounted in the ground electrode body shell through the insulating support frame, a sterilization air gap is formed between the insulating medium pipe and the ground electrode body shell, the high-voltage electrode pipe is coaxially sleeved in the insulating medium pipe, the high-voltage electrode rod is inserted in the high-voltage electrode pipe, the high-voltage connecting spring sheet is mounted on the high-voltage electrode rod and abuts against the high-voltage electrode pipe, one end of the high-voltage electrode rod extends from one end of the ground electrode body shell, and a wire connected to a power panel is connected to the high-voltage electrode rod.

4. The plasma suction device with automatic pressure regulating 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 inside center position of the disc support part, the cylindrical insertion part is inserted at the end of the high-voltage electrode pipe, air gap notches are arranged at intervals on the outer edge of the disc support part, and a perforation for inserting the high-voltage electrode rod is arranged at the middle part of the cylindrical insertion part.

5. The plasma suction device with automatic pressure regulating function according to claim 3, characterized in that: The high-voltage connecting spring sheet is bent from one spring sheet and comprises a vertical insertion part and two connection parts which are inclined upward at the upper and lower ends of the vertical insertion part, the vertical insertion part is inserted on the high-voltage electrode rod through the perforation arranged at the middle part of the vertical insertion part, high-voltage connecting spring sheet fastening nuts are arranged at the two ends of the vertical insertion part and are threadedly connected on the high-voltage electrode rod, and the two connection parts are press-connected on the inner wall of the high-voltage electrode pipe.

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