CN111481781A

CN111481781A - Positive and negative pressure alternative respiration support system

Info

Publication number: CN111481781A
Application number: CN201910086757.XA
Authority: CN
Inventors: 田鸣; 高宏; 黄东晓; 丁娴; 蔡惠梁
Original assignee: Wuxi Shengnuoya Technology Co Ltd
Current assignee: Wuxi Shengnuoya Technology Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-08-04

Abstract

The invention discloses a positive-negative pressure alternative respiration support system, which comprises a positive-pressure oxygen supply device, a negative-pressure suction device and a positive-negative pressure alternative control device, wherein the positive-negative pressure alternative control device can control and manage the positive-pressure oxygen supply device and the negative-pressure suction device independently or simultaneously; the positive-negative pressure alternative control device can perform pulse type management on the positive-pressure oxygen supply device and adjust oxygen supply frequency, air quantity and upper pressure limit; the negative pressure suction device can be managed in a pulse mode, and the negative pressure frequency and the lower pressure limit are adjusted; when the positive pressure oxygen supply device and the negative pressure suction device operate simultaneously, the positive pressure oxygen supply time of the positive pressure oxygen supply device and the negative pressure suction time of the negative pressure suction device are distributed in a crossed manner, and the positive pressure oxygen supply and the negative pressure suction operate alternately. Gas can enter the lung cavity more easily during positive pressure oxygen supply, and gas in the lung can be discharged out of the lung cavity more easily during negative pressure suction, so that the gas exchange in the lung is very favorable, secretion in the oral cavity can be effectively cleaned, the occurrence of aspiration is avoided, and the safety is greatly improved.

Description

Positive and negative pressure alternative respiration support system

Technical Field

The invention relates to a medical respiration support system, in particular to a positive and negative pressure alternative respiration support system.

Background

At present, in the process of intravenous anesthesia, a patient is in a sleeping state, and the respiratory depression condition can occur, particularly in the patient with snore, the respiratory depression condition is more serious. Accordingly, there is a need to provide a system that can provide respiratory support to a patient during anesthesia. The outpatient intravenous anesthesia operation time is short, and tracheal intubation is not necessary. When respiratory depression occurs, the mask is troublesome to ventilate, and when oral secretion of a patient is more, secretion is easy to suck by mistake, so that serious respiratory complications are caused, and even the life is threatened.

The high-flow oxygen inhalation device is widely applied to outpatient anesthesia, achieves certain effect and is already put into practice in some hospitals. But the high flow oxygen inhalation relies on the positive pressure of the oxygen outlet to supply oxygen to the lungs of the patient. Although respiratory depression occurs while maintaining the patient's oxygen saturation for more than ten minutes, its disadvantages are significant, and carbon dioxide gas cannot be effectively expelled from the patient's body, resulting in carbon dioxide accumulation and other risks, particularly aspiration.

The high-frequency jet breathing has obvious effect on the respiratory depression of patients, is commonly used in the vein anesthesia of patients with airway examination, and is particularly suitable for patients taking out tracheobronchial foreign bodies. The method is characterized in that a gas oscillation effect is applied, and oxygen in the lung generates a flow exchange effect to generate a gas exchange effect. However, the disadvantage is similar to high flow rate oxygen uptake, and carbon dioxide accumulation also occurs. The essence of high-frequency jet respiration is that positive pressure impact is continuously applied to the air passage, and when oxygen continuously impacts the air passage and the lung, the positive pressure is always kept in the air passage, and the change of the positive pressure and the negative pressure is severe. If pulse type management can be realized on high-frequency jet respiration, the oxygen jet clearance at each time is changed into negative pressure in the oral cavity, so that the discharge of carbon dioxide in the lung can be realized by being beneficial to the outflow of gas in the airway and the lung, and the pulse type management is very beneficial to the airway management of a patient.

Meanwhile, the negative pressure suction in the oral cavity is an important clinical treatment means, so that the excessive accumulation of the oral cavity secretion can be avoided, and the mistaken suction of the secretion can be fundamentally avoided. If the negative pressure is continuously given when the secretion is cleared by the negative pressure suction, the negative pressure suction port of the suction pipeline is adsorbed on the oral mucosa, and the suction port is blocked. Therefore, when the negative pressure suction is carried out to clean oral secretion, the negative pressure needs to be given intermittently to avoid the blockage of the negative pressure suction port.

If pulse type high-frequency jet breathing and negative pressure suction can be combined to be synchronously implemented, the positive pressure oxygen supply time of the positive pressure oxygen supply device and the negative pressure suction time of the negative pressure suction device are distributed in a cross way, the positive pressure oxygen supply and the negative pressure suction are alternately operated, so that gas can more easily enter a lung cavity during the positive pressure oxygen supply, and gas in the lung can more easily be discharged out of the lung cavity during the negative pressure suction, thereby being very beneficial to gas exchange in the lung, also effectively cleaning secretions in a mouth cavity, avoiding the occurrence of aspiration and greatly improving the safety.

Disclosure of Invention

The invention aims to provide a positive and negative pressure alternative respiration support system which can provide respiration support for a patient in an anesthesia process.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a positive-negative pressure alternative respiration support system comprises a positive pressure oxygen supply device, a negative pressure suction device, and a positive-negative pressure alternative control device which can control and manage the positive pressure oxygen supply device and the negative pressure suction device independently or simultaneously; the positive-negative pressure alternative control device can perform pulse type management on the positive-pressure oxygen supply device and adjust oxygen supply frequency, air quantity and upper pressure limit; the negative pressure suction device can be managed in a pulse mode, and the negative pressure frequency and the lower pressure limit are adjusted; when the positive pressure oxygen supply device and the negative pressure suction device operate simultaneously, the positive pressure oxygen supply time of the positive pressure oxygen supply device and the negative pressure suction time of the negative pressure suction device are distributed in a crossed manner, and the positive pressure oxygen supply and the negative pressure suction operate alternately.

Preferably, the positive and negative pressure alternative control device comprises a positive pressure oxygen supply tube, a negative pressure suction tube and a positive and negative pressure alternative controller;

one end of the positive pressure oxygen supply pipe is arranged on the head side of the patient, and the other end of the positive pressure oxygen supply pipe is connected with the positive pressure oxygen supply device; one end of the negative pressure suction tube is arranged on the head side of the patient, and the other end of the negative pressure suction tube is connected with the negative pressure suction device; the positive-negative pressure alternating controller comprises a positive pressure controller arranged on the positive pressure oxygen supply pipe and a negative pressure controller arranged on the negative pressure suction pipe; the positive pressure controller is connected with the positive pressure valve, and the negative pressure controller is connected with the negative pressure valve.

Preferably, the positive-negative pressure alternative control device further comprises a double-channel positive-negative pressure alternative breathing support pipeline, and the tail ends of the double-channel positive-negative pressure alternative breathing support pipeline are respectively provided with a connector; the positive pressure oxygen supply tube and the negative pressure suction tube are of a double-pipeline structure; the tail ends of the double pipelines are respectively provided with a connector which is matched with the connector at the tail end of the double-pipeline positive-negative pressure alternative breathing support pipeline.

Preferably, the positive and negative pressure alternation controller is a single alternation control switch; the alternating control switch comprises a positive and negative pressure pipeline fixing seat, two ends of the positive and negative pressure pipeline fixing seat are convex, a push rod is arranged in the middle of the positive and negative pressure pipeline fixing seat, the push rod is of an asymmetric structure, the radius of the semicircle on one side of the push rod is smaller than that of the semicircle on the other side of the push rod, the push rod is arranged on an output shaft of an external rotating device, supporting plates are arranged on two sides of the positive and negative pressure pipeline fixing seat, the two supporting plates are elastically connected through a first spring, two supporting plates are respectively provided with a top block on one side of the positive and negative pressure pipeline fixing seat, and the size of the top block is matched with the convex structures; the positive pressure oxygen supply pipe and the negative pressure suction pipe respectively penetrate into the protruding structures at the two ends of the positive and negative pressure pipeline fixing seat.

Preferably, the positive-negative pressure alternative controller is used by connecting two alternative control switches, and the positive-pressure oxygen supply pipe is arranged in a protruding structure of the positive-negative pressure pipeline fixing seat on one side of one alternative control switch; the negative pressure suction tube is arranged in the bulge structure of the positive and negative pressure pipeline fixing seat on one side of the other alternative control switch.

Preferably, the positive and negative pressure alternating controller comprises an air inlet and outlet piston cylinder, one side of the air inlet and outlet piston cylinder is provided with a first oxygen inlet, the air inlet and outlet piston cylinder is connected with an oxygen supply device through a first oxygen inlet, a first one-way valve is arranged on the first oxygen inlet, a first oxygen outlet is arranged on the air inlet and outlet piston cylinder on the same side as the first oxygen inlet, the air inlet and outlet piston cylinder is connected with the positive pressure oxygen supply pipe through the first oxygen outlet, a second one-way valve is arranged on the first oxygen outlet, a first positive pressure adjustable safety escape valve is arranged on the air inlet and outlet piston cylinder on the same side as the first oxygen outlet, the upper pressure limit value of the first positive pressure adjustable safety escape valve can be adjusted, when the gas pressure exceeds the set upper pressure limit of the first positive pressure adjustable safety escape valve, gas can escape through the first positive pressure adjustable safety escape valve;

the first air inlet piston head, the first air inlet piston rod, the first air inlet driven wheel, the first air inlet driving wheel and the first air inlet power device are sequentially arranged in the air inlet and outlet piston cylinder, the first air inlet piston head is fixedly connected with the first air inlet piston rod, the other end of the first air inlet piston rod is fixed on the first air inlet driven wheel, the first air inlet driven wheel is meshed with the first air inlet driving wheel, the first air inlet driving wheel is connected with the power output end of the first air inlet power device, the first air inlet power device is positioned on one side of the relative position of the first oxygen inlet, the first oxygen outlet or the first positive pressure adjustable safety escape valve, and a first negative pressure gas inlet, a first negative pressure gas outlet and a first negative pressure adjustable safety air inlet valve are arranged at one end of the relative position of the first oxygen inlet, the first oxygen outlet or the first positive pressure adjustable safety escape valve on the air inlet and outlet piston cylinder, the first negative pressure gas inlet is connected with the negative pressure suction pipe, a first liquid storage bag is arranged on the negative pressure suction pipe, a first waterproof vent valve is arranged at the outlet of the first liquid storage bag, a third one-way valve is arranged on the first negative pressure gas inlet, a first negative pressure gas outlet is connected with the negative pressure suction device, a fourth one-way valve is arranged on the first negative pressure gas outlet, the lower limit value of the negative pressure of the first negative pressure adjustable safety air inlet valve can be adjusted, and when the gas negative pressure is lower than the lower limit of the set pressure of the first negative pressure adjustable safety air inlet valve, gas can gain through the first negative pressure adjustable safety air inlet valve.

Preferably, the positive and negative pressure alternating controller comprises a positive pressure frequency controller and a negative pressure frequency controller;

the positive pressure frequency controller comprises an air inlet piston cylinder, a second oxygen inlet connected with an external oxygen supply device is arranged on the air inlet piston cylinder, a fifth one-way valve is arranged on the second oxygen inlet, a second air inlet piston head, a second air inlet piston rod, a second air inlet driven wheel, a second air inlet driving wheel and a second air inlet power device are sequentially arranged in the air inlet piston cylinder, the power output end of the second air inlet power device is connected with the second air inlet driving wheel, the second air inlet driving wheel is meshed with the second air inlet driven wheel, one end of the second air inlet piston rod is installed on the second air inlet driven wheel, the other end of the second air inlet piston rod is fixed with the second air inlet piston head, a second oxygen outlet is arranged on one side of the air inlet piston cylinder, which is not provided with the second air inlet power device, and is connected with the positive pressure oxygen supply pipe, a sixth one-way valve is arranged on the second oxygen outlet, and the first positive pressure adjustable safety escape valve is arranged on the air inlet piston cylinder adjacent to the second oxygen outlet;

the negative pressure frequency controller comprises a second liquid storage bag connected with the negative pressure suction tube, a second waterproof vent valve is arranged at the outlet end of the second liquid storage bag, the outlet end of the second liquid storage bag is connected with a second exhaled waste gas inlet on the air outlet piston cylinder, a seventh one-way valve is arranged on the second exhaled waste gas inlet, one end in the air outlet piston cylinder is connected with an air outlet piston rod through a sealed air outlet piston head, the other end of the air outlet piston rod is fixed with an air outlet driven wheel, the air outlet driven wheel is meshed with an air outlet driving wheel, the air outlet driving wheel is fixed with the power output end of the air outlet power device, a second exhaled waste gas outlet is arranged on one side of the air outlet piston cylinder, on which the air outlet power device is not arranged, the second exhaled waste gas outlet is connected with an external negative pressure suction device, and an eighth one-way valve is arranged on the second exhaled waste, and the air outlet piston cylinder adjacent to the second exhaled waste gas outlet is provided with the first negative pressure adjustable safety air inlet valve.

Preferably, the positive and negative pressure alternative controller further comprises a first air injection quantity adjusting mechanism capable of adjusting the moving range of the air inlet and outlet piston cylinder to further adjust the oxygen supply capacity, a second air injection quantity adjusting mechanism capable of adjusting the moving range of the air inlet piston cylinder to further adjust the oxygen supply capacity, and a third air injection quantity adjusting mechanism capable of adjusting the moving range of the air outlet piston cylinder to further adjust the exhaled waste gas suction capacity;

the first air injection quantity adjusting mechanism is a first air inlet piston rod with adjustable length and capable of being contracted and temporarily locked, the second air injection quantity adjusting mechanism is a second air inlet piston rod with adjustable length and capable of being contracted and temporarily locked, and the third air injection quantity adjusting mechanism is an air outlet piston rod with adjustable length and capable of being contracted and temporarily locked;

the first air injection quantity adjusting mechanism further comprises a first sliding groove arranged on the first air inlet driven wheel, and the first air inlet piston rod is movably arranged on the first sliding groove; the second air injection quantity adjusting mechanism further comprises a second sliding groove arranged on the second air inlet driven wheel, and the second air inlet piston rod is movably arranged on the second sliding groove; the third air injection quantity adjusting mechanism further comprises a third sliding groove formed in the air outlet driven wheel, and the air outlet piston rod is movably mounted on the third sliding groove.

Preferably, the first positive pressure adjustable safety escape valve comprises a first sleeve, a first loop bar vertically penetrates through the first sleeve, a through hole is formed in the bottom of the first sleeve and is communicated with an air inlet and outlet piston cylinder, the first sleeve is communicated with the outside, a second spring, a first safety valve plate and a first adjustable valve plate are sequentially sleeved on the first loop bar from bottom to top, threads are arranged on the outer wall of the first loop bar, threads are arranged on the inner wall of the first adjustable valve plate, the first adjustable valve plate is in threaded connection with the first sleeve bar, the first safety valve plate and the first loop bar are movably connected, a through hole is formed in the first adjustable valve plate, a sealing ring is arranged on the periphery of the first adjustable valve plate, ribs are arranged on two sides of the inner wall of the first sleeve, grooves matched with the ribs are formed on the peripheries of the first safety valve plate and the first adjustable valve plate, the first air inlet piston head, the first air inlet piston rod, the first air inlet driven wheel, the first air inlet driving wheel and the first air inlet power device are sequentially arranged in the air inlet and outlet piston cylinder, the first air inlet piston head is fixedly connected with the first air inlet piston rod, the other end of the first air inlet piston rod is fixed on the first air inlet driven wheel, the first air inlet driven wheel is meshed with the first air inlet driving wheel, the first air inlet driving wheel is connected with the power output end of the first air inlet power device, the first air inlet power device is positioned on one side of the relative position of the first oxygen inlet, the first oxygen outlet or the first positive pressure adjustable safety escape valve, and a first negative pressure gas inlet, a first negative pressure gas outlet and a first negative pressure adjustable safety air inlet valve are arranged at one end of the relative position of the first oxygen inlet, the first oxygen outlet or the first positive pressure adjustable safety escape valve on the air inlet and outlet piston cylinder, the first negative pressure gas inlet is connected with the negative pressure suction pipe, the negative pressure suction pipe is provided with a first liquid storage bag, the outlet of the first liquid storage bag is provided with a first waterproof vent valve, the first negative pressure gas inlet is provided with a third one-way valve, the first negative pressure gas outlet is connected with the negative pressure suction device, and the first negative pressure gas outlet is provided with a fourth one-way valve.

Preferably, the first negative pressure adjustable safety air inlet valve comprises a second sleeve, a second loop bar is vertically arranged in the second sleeve in a penetrating way, the bottom of the second sleeve is provided with a through hole which is communicated with the second sleeve, the second sleeve is communicated with the outside, the second loop bar is sleeved with a second adjustable valve plate, a second safety valve plate and a third spring from bottom to top in sequence, the outer wall of the second sleeve rod is provided with threads, the inner wall of the second adjustable valve plate is provided with threads, the second adjustable valve plate is in threaded connection with the second sleeve rod, the second safety valve plate is movably connected with the second sleeve rod, the bottom of the second sleeve rod is provided with a limit block for placing the third spring, the second adjustable valve plate is provided with a through hole, the periphery of the second adjustable valve plate is provided with a sealing ring, two sides of the inner wall of the second sleeve are provided with convex edges, and grooves matched with the convex ribs are formed in the peripheries of the second safety valve plate and the second adjustable valve plate.

By adopting the technical scheme, (1) the negative pressure expiration leading-out system is arranged to effectively lead the gas expired by the patient out of the body, so as to prevent the accumulation of carbon dioxide waste gas in the patient body; (2) the alternative opening or closing of the positive pressure oxygen supply pipe and the negative pressure suction pipe can be conveniently controlled through the positive and negative pressure alternative control, the negative pressure suction pipe is in a closed state when oxygen enters the process, and the positive pressure oxygen supply pipe is in the closed state when exhaled waste gas or liquid secretion is output into the body.

Drawings

FIG. 1 is a schematic view of one configuration of a positive pressure oxygen supply tube and a negative pressure suction tube of the present invention;

FIG. 2 is a schematic view of another configuration of the positive pressure oxygen supply tube and the negative pressure suction tube of the present invention;

FIG. 3 is a schematic structural view of a positive-negative pressure alternation controller of the invention in embodiment 1;

FIG. 4 is a schematic diagram of an alternate control switch according to the present invention;

FIG. 5 is a schematic structural diagram of a positive-negative pressure alternation controller of the invention in embodiment 4;

FIG. 6 is a schematic representation of a first positive pressure adjustable safety escape valve of the present invention;

FIG. 7 is a schematic diagram of the components of a first positive pressure adjustable safety escape valve of the present invention;

FIG. 8 is a schematic view of a first variable inlet vacuum valve of the present invention;

FIG. 9 is a schematic diagram of the components of the first variable inlet vacuum valve of the present invention;

FIG. 10 is a schematic diagram of a positive pressure frequency controller according to the present invention;

fig. 11 is a schematic structural diagram of the negative pressure frequency controller of the present invention.

In the figure, 1-a positive pressure oxygen supply pipe, 2-a negative pressure suction pipe, 3-a positive pressure controller, 4-a negative pressure controller, 5-a positive pressure valve, 6-a negative pressure valve, 7-a positive and negative pressure pipeline fixing seat, 8-a top rod, 9-a supporting plate, 10-a first spring, 11-a top block, 12-an air inlet and outlet piston cylinder, 13-a first oxygen inlet, 14-a first one-way valve, 15-a first oxygen outlet, 16-a second one-way valve, 17-a first positive pressure adjustable safety escape valve, 1701-a first sleeve, 1702-a first sleeve rod, 1703-a second spring, 1704-a first safety valve plate, 1705-a first adjustable valve plate, 18-a first air inlet piston head, 19-a first air inlet piston rod, 20-a first air inlet driven wheel, 201-a first sliding groove, 21-a first air inlet driving wheel, 22-a first air inlet power device, 23-a first negative pressure air inlet, 24-a first negative pressure air outlet, 25-a first negative pressure adjustable safety air inlet valve, 2501-a second sleeve, 2502-a second sleeve rod, 2503-a second adjustable valve plate, 2504-a second safety valve plate, 2505-a third spring, 26-a first liquid storage bag, 27-a first waterproof ventilation valve, 28-a third one-way valve, 29-a fourth one-way valve, 30-an air inlet piston cylinder, 31-a second air inlet, 32-a fifth one-way valve, 33-a second air inlet piston head, 34-a second air inlet piston rod, 35-a second air inlet driven wheel, 36-a second air inlet driving wheel, 37-a second air inlet power device, 38-a second oxygen outlet, 39-a sixth one-way valve, 40-a second sliding groove, 41-a second liquid storage bag, 42-a second waterproof vent valve, 43-an air outlet piston cylinder, 44-a second exhaled waste gas inlet, 45-a seventh one-way valve, 46-an air outlet piston head, 47-an air outlet piston rod, 48-an air outlet driven wheel, 49-an air outlet driving wheel, 50-an air outlet power device, 51-a second exhaled waste gas outlet, 52-an eighth one-way valve and 53-a third sliding groove.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

A positive-negative pressure alternative respiration support system comprises a positive-pressure oxygen supply device, a negative-pressure suction device and a positive-negative pressure alternative control device which can independently or simultaneously control the oxygen delivery of the positive-pressure oxygen supply device in an alternative way and lead out control and management of waste gas exhaled by the negative-pressure suction device; the positive-negative pressure alternative control device can perform pulse type management on the positive-pressure oxygen supply device and adjust oxygen supply frequency, air quantity and upper pressure limit; the negative pressure suction device can be managed in a pulse mode, and the negative pressure frequency and the lower pressure limit are adjusted; when the positive pressure oxygen supply device and the negative pressure suction device operate simultaneously, the positive pressure oxygen supply time of the positive pressure oxygen supply device and the negative pressure suction time of the negative pressure suction device are distributed in a crossed manner, and the positive pressure oxygen supply and the negative pressure suction operate alternately.

As shown in fig. 1-3, the positive-negative pressure alternative control device comprises a positive pressure oxygen supply tube 1, a negative pressure suction tube 2 and a positive-negative pressure alternative controller;

one end of the positive pressure oxygen supply pipe 1 is arranged on the head side of a patient, the other end of the positive pressure oxygen supply pipe is connected with a positive pressure oxygen supply device, one end of the negative pressure suction pipe 3 is arranged on the head side of the patient, the other end of the negative pressure suction pipe is connected with a negative pressure suction device, gas exhaled by the patient can be effectively discharged out of the body through the negative pressure suction pipe 2, accumulation of carbon dioxide waste gas in the body of the patient is prevented, meanwhile, liquid secretion such as saliva secreted by the patient can be effectively discharged out of the body through the discharge device, and the serious consequence caused by; the positive-negative pressure alternative controller comprises a positive pressure controller 3 arranged on the positive pressure oxygen supply tube 1 and a negative pressure controller 4 arranged on the negative pressure suction tube 2, and the positive pressure controller 3 and the negative pressure controller 4 are used for controlling the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 to be switched on and off so as to achieve the effect of positive-negative pressure alternative control;

preferably, the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 are parallel double tubes, and the parallel double tubes are convenient to be placed on the head side of a patient together, so that misoperation is prevented; preferably, the positive pressure controller 3 is connected with a positive pressure valve 5, the negative pressure controller 4 is connected with a negative pressure valve 6, the safety of the invention can be increased by arranging the positive pressure valve 5 and the negative pressure valve 6, and when the pressure in the positive pressure oxygen supply pipe 1 is too large and exceeds a set value, the positive pressure valve 5 is opened to release the pressure to a safety range; when the negative pressure in the negative pressure suction tube 2 is too large, the negative pressure valve 6 is opened to increase the pressure to a safe range;

during the use, through on positive pressure controller 3 and the negative pressure controller 4 parameter value control such as frequency, interval time control respectively the opening or the closing frequency of malleation oxygen supply pipe 1 and negative pressure suction pipe 2, guarantee simultaneously that malleation oxygen supply pipe 1 and negative pressure suction pipe 2's continuous alternate work.

Example 2

A positive and negative pressure alternative breathing support system includes a positive and negative pressure alternative control device that alternately controls oxygen delivery and exhaled exhaust gas extraction.

As shown in fig. 4, the positive-negative pressure alternative control device comprises a positive pressure oxygen supply tube 1, a negative pressure suction tube 2 and a positive-negative pressure alternative controller;

the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 are as described in embodiment 1; the positive and negative pressure alternative controller is a single alternative control switch, the alternative control switch comprises a positive and negative pressure pipeline fixing seat 7, two ends of the positive and negative pressure pipeline fixing seat 7 are in a convex shape, and the middle part of the positive and negative pressure pipeline fixing seat 7 is provided with a positive and negative pressure pipelineEjector rod 8The ejector rod 8 is an asymmetric structure with the semicircular radius of one side smaller than that of the other side, the ejector rod 8 can be mounted on an output shaft of an external rotating device and can perform circular motion under the driving of the rotating device, the rotating device can be selected and is not limited to a motor, the ejector rod 8 is located on two sides of the positive and negative pressure pipeline fixing seats 7 and is provided with supporting plates 9, the two supporting plates 9 are elastically connected through a first spring 10, ejector blocks 11 are respectively arranged on one sides, located on the positive and negative pressure pipeline fixing seats 7, of the two supporting plates 9, the size of each ejector block 11 is matched with the protruding structures at two ends of the positive and negative pressure pipeline fixing seats 7, and the ejector blocks 11 can be inserted into the protruding parts of the positive and negative pressure pipeline fixing seats 7 on one side of the same.

When the device is used, the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 respectively pass through the convex part of the positive and negative pressure pipeline fixing seat 7, the ejector rod 8 can do circular motion by taking the rotating shaft of the external rotating device as the center of a circle under the driving of the external rotating device, because the ejector rod 8 is of an asymmetric structure, when the semicircle on the side with larger radius of the ejector rod 8 moves to one side of the positive and negative pressure pipeline fixing seat 7, the ejector rod 8 pushes the supporting plate 9 connected with the ejector block 11 into the convex structure on one side of the positive and negative pressure pipeline fixing seat 7, so as to close the positive pressure oxygen supply tube 1 or the negative pressure suction tube 2 in the ejector rod, the semicircle on the side with smaller radius of the ejector rod 8 moves to the other side of the positive and negative pressure pipeline fixing seat 7, and under the elastic force of the first spring 10, the first spring 10 pulls the supporting plate 9 fixed with the ejector block 11 to move out of, therefore, the negative pressure suction tube 2 or the positive pressure oxygen supply tube 1 in the protruding structure of the positive and negative pressure pipeline fixing seat 7 is opened, the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 are alternately opened or closed, the negative pressure suction tube 2 is in a closed state when oxygen enters, the positive pressure oxygen supply tube 1 is in a closed state when exhaled waste gas or liquid secretion is output into a body, the switching frequency of the alternating control switch can be controlled by regulating and controlling the rotation frequency of an external rotating device, and the air intake and exhalation extraction frequency is further controlled.

Example 3

The positive-negative pressure alternative control device comprises a positive pressure oxygen supply tube 1, a negative pressure suction tube 2 and a positive-negative pressure alternative controller;

the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 are as described in embodiment 1; the positive-negative pressure alternative controller is used together for the double alternative control switches, when in use, the positive-pressure oxygen supply tube 1 is arranged in the protruding structure of the positive-negative pressure pipeline fixing seat 7 on one side of one alternative control switch, the negative-pressure suction tube 2 is arranged in the protruding structure of the positive-negative pressure pipeline fixing seat 7 on one side of the other alternative control switch, the motion directions of the ejector rods 8 of the two alternative control switches are controlled by respectively controlling the external rotating devices of the two alternative control switches, the positive-pressure oxygen supply tube 1 is ensured to be in a closed state when in work, the negative-pressure suction tube 2 is in a closed state, the positive-pressure oxygen supply tube 1 and the negative-pressure suction tube 2 are alternately opened or closed, and the air inlet and expiration leading-out frequencies can be respectively controlled by respectively controlling the rotating frequencies of the external.

Example 4

as shown in fig. 5 to 9, the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 are as described in example 1; the positive-negative pressure alternative controller comprises an air inlet and outlet piston cylinder 12, a first oxygen inlet 13 is arranged on one side of the air inlet and outlet piston cylinder 12, the air inlet and outlet piston cylinder 12 is connected with an oxygen supply device through the first oxygen inlet 13, a first one-way valve 14 is arranged on the first oxygen inlet 13, and oxygen output from the oxygen supply device can only enter the air inlet and outlet piston cylinder 12 through the first one-way valve 14 and cannot return from the air inlet and outlet piston cylinder 12; a first oxygen outlet 15 is arranged on the air inlet and outlet piston cylinder 12 on the same side as the first oxygen inlet 13, the air inlet and outlet piston cylinder 12 is connected with the positive pressure oxygen supply pipe 1 through the first oxygen outlet 15, a second one-way valve 16 is arranged on the first oxygen outlet 15, and oxygen can only be input into the positive pressure oxygen supply pipe 1 from the air inlet and outlet piston cylinder 12 through the second one-way valve 16 but cannot return into the air inlet and outlet piston cylinder 12; a first positive pressure adjustable safety escape valve 17 is arranged on the air inlet and outlet piston cylinder 12 on the same side as the first oxygen outlet 15, the first positive pressure adjustable safety escape valve 17 comprises a first sleeve 1701, a first sleeve 1702 vertically penetrates through the first sleeve 1701, a through hole is formed in the bottom of the first sleeve 1701, the through hole is communicated with the air inlet and outlet piston cylinder 12 and is used for introducing oxygen in the air inlet and outlet piston cylinder 12 into the first sleeve 1701, the first sleeve 1701 is communicated with the outside, a second spring 1703, a first safety valve plate 1704 and a first adjustable valve plate 1705 are sequentially sleeved on the first sleeve 1702 from bottom to top, threads are arranged on the outer wall of the first sleeve 1702, threads are arranged on the inner wall of the first adjustable valve plate 1705, the first adjustable valve plate 1705 is in threaded connection with the first sleeve 1702, and the first safety valve plate 1704 is movably connected with the first sleeve 1702, the first adjustable valve plate 1705 is provided with a through hole for introducing oxygen into the air inlet and outlet piston cylinder 12, a sealing ring is arranged on the periphery of the first adjustable valve plate 1705 to prevent the oxygen from leaking from the contact part of the first adjustable valve plate 1705 and the first sleeve 1701, ribs are arranged on two sides of the inner wall of the first sleeve 1701, grooves matched with the ribs are arranged on the peripheries of the first safety valve plate 1704 and the first adjustable valve plate 1705 to circumferentially fix the first safety valve plate 1704 and the first adjustable valve plate 1705 and prevent the first safety valve plate 1704 and the first adjustable valve plate 1705 from inclining in the installation process; a first air inlet piston head 18, a first air inlet piston rod 19, a first air inlet driven wheel 20, a first air inlet driving wheel 21 and a first air inlet power device 22 are sequentially arranged in the air inlet and outlet piston cylinder 12, the first air inlet piston head 18 is fixedly connected with the first air inlet piston rod 19, the other end of the first air inlet piston rod 19 is fixed on the first air inlet driven wheel 20, the first air inlet driven wheel 20 is meshed with the first air inlet driving wheel 21, the first air inlet driving wheel 21 is connected with a power output end of the first air inlet power device 22, the first air inlet power device 22 can be selected from a motor but not limited to a motor, the first air inlet power device 22 is positioned on one side of the position opposite to the first oxygen inlet 13, the first oxygen outlet 15 or the first positive pressure adjustable safety escape valve 17, and the first air inlet power device 22 drives the first air inlet driving wheel 21 to rotate, the first air inlet driving wheel 21 drives the first air inlet driven wheel 20 to rotate, and further drives the first air inlet piston rod 19 and the first air inlet piston head 18 to do piston motion back and forth; a first negative pressure gas inlet 23, a first negative pressure gas outlet 24 and a first negative pressure adjustable safety air inlet valve 25 are arranged at one end of the air inlet and outlet piston cylinder 12, which is opposite to the first oxygen inlet 13, the first oxygen outlet 15 or the first positive pressure adjustable safety escape valve 17, the first negative pressure gas inlet 23 is connected with the negative pressure suction tube 2, a first liquid storage bag 26 is arranged on the negative pressure suction tube 2, a first waterproof ventilation valve 27 is arranged at the outlet of the first liquid storage bag 26, liquid secretion can be secreted in the process of leading out gas exhaled by a patient, when the liquid secretion is conveyed to the first liquid storage bag 26, the liquid secretion falls into the first liquid storage bag 26 under the action of gravity, so that the device behind the liquid secretion is prevented from being polluted, the device behind the liquid secretion can be further prevented from entering by arranging the first waterproof ventilation valve 27, a third one-way valve 28 is arranged on the first negative pressure gas inlet 23, exhaust gas exhaled by the patient can only enter the air inlet piston cylinder 12 through the third one-way valve 28 and cannot reversely escape; the first negative pressure gas outlet 24 is connected with a negative pressure suction device, a fourth one-way valve 29 is arranged on the first negative pressure gas outlet 24, and the exhaled waste gas in the air inlet and outlet piston cylinder 12 can only be discharged into the negative pressure suction device through the fourth one-way valve 29 and cannot reversely enter the air inlet and outlet piston cylinder 12; the first negative pressure adjustable safety air intake valve 25 comprises a second sleeve 2501, a second sleeve 2502 is vertically arranged in the second sleeve 2501 in a penetrating manner, a through hole is formed in the bottom of the second sleeve 2501 and communicated with the second sleeve 2501, the second sleeve 2501 is communicated with the outside, a second adjustable valve plate 2503, a second safety valve plate 2504 and a third spring 2505 are sequentially sleeved on the second sleeve 2502 from bottom to top, a thread is arranged on the outer wall of the second sleeve 2502, a thread is arranged on the inner wall of the second adjustable valve plate 2503, the second adjustable valve plate 2503 is in threaded connection with the second sleeve 2502, the second safety valve plate 2504 is movably connected with the second sleeve 2502, and a limiting block for placing the third spring 2505 is arranged at the bottom of the second sleeve 2502,

be equipped with the through-hole on the adjustable valve piece of second 2503, the adjustable valve piece of second 2503 periphery is equipped with the sealing washer, prevent that outside air from second adjustable valve piece 2503 with in the contact department of second sleeve 2501 gets into second sleeve 2501, second sleeve 2501 inner wall both sides are equipped with the bead, second safety valve piece 2504 and the adjustable valve piece of second 2503 periphery be equipped with bead assorted recess is used for right the fixing of second safety valve piece 2504 and the adjustable valve piece of second 2503 circumference prevents to take place to incline at the in-process of installation.

When the invention is used, oxygen enters the positive pressure side of the air inlet and outlet piston cylinder 12 from the external oxygen supply device through the first one-way valve 14, the first air inlet power device 22 in the air inlet and outlet piston cylinder 12 drives the first air inlet driving wheel 21 to rotate, the first air inlet driving wheel 21 drives the first air inlet driven wheel 20 to rotate, so as to drive the first air inlet piston rod 19 on the first air inlet driven wheel 20 and the first air inlet piston head 18 to carry out piston movement back and forth, so as to push the oxygen in the air inlet and outlet piston cylinder 12 to enter the positive pressure oxygen supply pipe 1 through the first one-way valve 14, so as to be input to the head side of a patient, when the oxygen pressure at one side in the air inlet and outlet piston cylinder 12 is smaller than the elastic force of the second spring 1703, the second spring 1703 pushes against the first safety valve plate 1704 on the first adjustable valve plate 1705 through the elastic force, so that oxygen cannot enter the first sleeve 1701 through the through hole on the first adjustable valve plate 1705; when the pressure of oxygen entering and exiting from the positive pressure side in the air piston cylinder 12 is greater than the elastic force of the second spring 1703, the pressure of the oxygen pushes the first safety valve piece 1704 on the first adjustable valve piece 1705, the oxygen enters the first sleeve 1701 and is communicated with the outside atmosphere, the pressure relief effect is achieved, the lung of a patient is prevented from being impacted or damaged due to the fact that the pressure of the oxygen entering the patient is too high, the compression amount of the second spring 1703 can be adjusted by adjusting the relative position of the first adjustable valve piece 1705 on the first sleeve 1702, and the limit value of the pressure of the oxygen entering and exiting from the air piston cylinder 12 is controlled; exhaled waste gas enters one side of the negative pressure of the air inlet and outlet piston cylinder 12 through the third one-way valve 28 under the traction of the negative pressure suction device, and then enters the negative pressure suction device from the first negative pressure gas outlet 24 on one side of the negative pressure, when the first air inlet piston head 18 and the first air inlet piston rod 19 push one side of the positive pressure, one side of the negative pressure can be pulled, so that the positive pressure and the negative pressure on two sides of the air inlet and outlet piston cylinder 12 can be ensured to work alternately, the rotating speeds of the first air inlet driving wheel 21 and the first air inlet driven wheel 20 can be regulated and controlled by regulating the power output speed of the first air inlet power device 22, the piston motion frequency of the first air inlet piston head 18 is further controlled, and the frequency of air inlet and exhalation extraction is controlled; when the external atmospheric pressure is smaller than the elastic force of the third spring 2505, the third spring 2505 abuts against the second safety valve plate 2504 below the second adjustable valve plate 2503 through the elastic force, so that the external atmospheric air cannot enter the second sleeve 2501 through the through hole on the second adjustable valve plate 2503; when the pressure of the external atmosphere is greater than the elastic force of the third spring 2505, the pressure of the external atmosphere pushes the second safety valve plate 2504 below the second adjustable valve plate 2503 down to enter the second sleeve 2501, the second sleeve 2501 is communicated with the negative pressure side of the air inlet and outlet piston cylinder 12, so that the pressure boosting effect is achieved, the situation that the lung of a patient is damaged due to the fact that the suction force of the negative pressure suction device is too large is prevented, the compression amount of the third spring 2505 can be adjusted by adjusting the relative position of the second adjustable valve plate 2503 on the second sleeve rod 2502, and the pressure limit value of the negative pressure side in the air inlet and outlet piston cylinder 12 is controlled.

Preferably, the first air inlet piston rod 19 is a length adjustable rod which can be contracted and temporarily locked, and can regulate and control the air inflow amount of primary oxygen and the exhaust amount of primary exhaled waste gas, and the first air inlet piston rod 19 is adjusted to be long, so that the distance for making piston movement is short, and the volumes of oxygen and exhaled waste gas in the air inlet piston cylinder 12 and the air outlet piston cylinder 12 are small; in the same principle, the first air intake driven wheel 20 is provided with a first sliding groove 201, the first air intake piston rod 19 is movably mounted on the first sliding groove 201, and the first sliding groove 201 allows the distance between the first air intake piston rod 19 and the first air intake driven wheel 20 to be adjusted, thereby achieving the effect of adjusting the amount of piston movement.

Example 5

as shown in fig. 10 and 11, the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 are as described in example 1; the positive and negative pressure alternating controller comprises a positive pressure frequency controller and a negative pressure frequency controller;

the positive pressure frequency controller comprises an air inlet piston cylinder 30, a second oxygen inlet 31 connected with an external oxygen supply device is arranged on the air inlet piston cylinder 30, when oxygen enters the air inlet piston cylinder 30 from the external oxygen supply device, the air inlet pressure of the oxygen can play an effective buffering role, a fifth one-way valve 32 is arranged on the second oxygen inlet 31, the oxygen of the oxygen supply device can only enter the air inlet piston cylinder 30 through the fifth one-way valve 32 and cannot return from the air inlet piston cylinder 30, a second air inlet piston head 33, a second air inlet piston rod 34, a second air inlet driven wheel 35, a second air inlet driving wheel 36 and a second air inlet power device 37 are sequentially arranged in the air inlet piston cylinder 30, the power output end of the second air inlet power device 37 is connected with the second air inlet driving wheel 36, and the second air inlet driving wheel 36 is meshed with the second air inlet driven wheel 35, one end of the second air inlet piston rod 34 is mounted on the second air inlet driven wheel 35, and the other end of the second air inlet piston rod is fixed to the second air inlet piston head 33, the second air inlet power device 37 may be, but is not limited to, a motor, the second air inlet power device 37 drives the second air inlet driving wheel 36 to rotate, the second air inlet driving wheel 36 drives the second air inlet driven wheel 35 to rotate, and thus the second air inlet piston rod 34 and the second air inlet piston head 33 on the second air inlet driven wheel 35 are driven to perform piston motion back and forth; one side that does not set up the second power device 37 that admits air on the piston tube 30 that admits air is equipped with second oxygen export 38, second oxygen export 38 with malleation oxygen supply pipe 1 links to each other, be equipped with sixth check valve 39 on the second oxygen export 38, oxygen in the piston tube 30 that admits air gets into malleation oxygen supply pipe 1 through sixth check valve 39 and inputs patient's head side, and oxygen can not return through sixth check valve 39 and get into piston tube 30 that admits air, be equipped with on the piston tube 30 that admits air that second oxygen export 38 is adjacent first malleation adjustable safety escape valve 17,

preferably, the second air inlet piston rod 34 is a length adjustable rod which can be contracted and temporarily locked, and can adjust and control the air inflow of primary oxygen, and if the second air inlet piston rod 34 is adjusted to be long, the piston movement distance is short, the oxygen volume in the air inlet piston cylinder 30 is small, and therefore the oxygen intake amount of the primary piston movement is small; on the same principle, a second sliding groove 40 is arranged on the second air inlet driven wheel 35, the second air inlet piston rod 34 is movably mounted on the second sliding groove 40, and by arranging the second sliding groove 40, the distance between the second air inlet piston rod 34 and the second air inlet driven wheel 35 can be adjusted, so that the effect of adjusting the oxygen inlet amount of the piston movement is achieved;

when the positive pressure oxygen supply device is used, oxygen enters the air inlet piston cylinder 30 from the external oxygen supply device through the fifth one-way valve 32, the second air inlet power device 37 in the air inlet piston cylinder 30 drives the second air inlet driving wheel 36 to rotate, the second air inlet driving wheel 36 drives the second air inlet driven wheel 35 to rotate, so that the second air inlet piston rod 34 and the second air inlet piston head 33 on the second air inlet driven wheel 35 are driven to reciprocate to perform piston motion, so that the oxygen in the air inlet piston cylinder 30 is pushed to enter the positive pressure oxygen supply pipe 1 through the sixth one-way valve 39 to enter the head side of a patient, and when the pressure of the oxygen in the air inlet piston cylinder 30 is smaller than the set pressure value of the first positive pressure adjustable safety escape valve 17, the oxygen normally enters the head side of the patient; when the oxygen pressure in the air inlet piston cylinder 30 is greater than the pressure value set by the first positive pressure adjustable safety escape valve 17, the first positive pressure adjustable safety escape valve 17 can play a role of pressure relief, so that the impact or damage to the lung of the patient caused by the overlarge oxygen pressure entering the patient is prevented;

the negative pressure frequency controller comprises a second liquid storage bag 41 connected with the negative pressure suction tube 2, a second waterproof vent valve 42 is arranged at the outlet end of the second liquid storage bag 41, the outlet end of the second liquid storage bag 41 is connected with a second exhaled waste gas inlet 44 on an air outlet piston cylinder 43, a seventh one-way valve 45 is arranged on the second exhaled waste gas inlet 44, the exhaled waste gas can only enter the air outlet piston cylinder 43 through the seventh one-way valve 45 and cannot escape reversely, one end in the air outlet piston cylinder 43 is connected with an air outlet piston rod 47 through a sealed air outlet piston head 46, the air outlet piston head 46 can move back and forth along the inner wall of the air outlet piston cylinder 43 under the pushing of the air outlet piston rod 47, the other end of the air outlet piston rod 47 is fixed with an air outlet driven wheel 48, the air outlet driven wheel 48 is meshed with an air outlet driving wheel 49, and the air outlet driving wheel 49 is fixed with the power output end of an air outlet, the air outlet power device 50 can be selected from, but not limited to, a motor, the air outlet power device 50 drives the air outlet driving wheel 49 to rotate, and the air outlet driving wheel 49 drives the air outlet driven wheel 48 to rotate, so that the air outlet piston rod 47 and the air outlet piston head 46 on the air outlet driven wheel 48 are driven to do piston motion back and forth; a second exhaled waste gas outlet 51 is arranged on one side, which is not provided with the air outlet power device 50, of the air outlet piston cylinder 43, the second exhaled waste gas outlet 51 is connected with an external negative pressure suction device, an eighth one-way valve 52 is arranged on the second exhaled waste gas outlet 51, exhaled waste gas in the air outlet piston cylinder 43 can only be discharged into the external negative pressure suction device through the eighth one-way valve 52 and cannot return into the air outlet piston cylinder 43, and the first negative pressure adjustable safety air inlet valve 25 is arranged on the air outlet piston cylinder 43 adjacent to the second exhaled waste gas outlet 51;

when the negative pressure adjustable safety air inlet valve is used, exhaled waste gas enters the air outlet piston cylinder 43 through the seventh one-way valve 45 under the traction of the external negative pressure suction device, the air outlet power device 50 in the air outlet piston cylinder 43 drives the air outlet driving wheel 49 to rotate, the air outlet driving wheel 49 drives the air outlet driven wheel 48 to rotate, so that the air outlet piston rod 47 and the air outlet piston head 46 on the air outlet driven wheel 48 are driven to move back and forth to perform piston motion, the exhaled waste gas in the air outlet piston cylinder 43 is pushed to enter the external negative pressure suction device through the eighth one-way valve 52, the frequency of negative pressure extraction can be controlled by setting the motion frequency of the air outlet power device 50, and when the external atmospheric pressure is smaller than the set value of the first negative pressure adjustable safety air inlet valve 25, the exhaled waste gas in the air; when the pressure of the external atmosphere is greater than the set value of the first negative pressure adjustable safety air inlet valve 25, the first negative pressure adjustable safety air inlet valve 25 can be communicated with the external atmosphere to play a role in boosting pressure, so that the lung of the patient is prevented from being damaged due to overlarge suction force of the negative pressure suction device.

Preferably, the air outlet piston rod 47 is a length adjustable rod which can be contracted and temporarily locked, so that the air inflow of the primary exhaled waste gas can be adjusted and controlled, and the air outlet piston rod 47 is adjusted to be long, so that the piston movement distance is short, the exhaled waste gas capacity in the air outlet piston rod 47 is small, and the air output of the primary piston movement is small; in the same principle, the air outlet driven wheel 48 is provided with a third sliding groove 53, the air outlet piston rod 47 is movably mounted on the third sliding groove 53, and the distance between the air outlet piston rod 47 and the air outlet driven wheel 48 can be adjusted by arranging the third sliding groove 53, so that the air outlet amount of the piston movement can be adjusted.

When the device is used, the motion frequencies of the second air inlet power device 37 and the second air outlet power device 50 can be respectively controlled, the leading-out frequency of air inlet gas and the leading-out frequency of exhaled gas can be respectively controlled, and the alternation of air inlet and exhaled gas leading-out can be guaranteed.

The negative pressure expiration leading-out system can effectively lead the gas expired by the patient out of the body, and prevent the accumulation of carbon dioxide waste gas in the patient body; the alternate opening or closing of the positive pressure oxygen supply tube 1 and the negative pressure suction tube 2 can be conveniently controlled through the alternate control of positive pressure and negative pressure, so that the negative pressure suction tube 2 is in a closed state when oxygen enters the process, and the positive pressure oxygen supply tube 1 is in the closed state when exhaled waste gas or liquid secretion is output into the body.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. A positive and negative pressure alternating breathing support system, comprising: comprises a positive pressure oxygen supply device, a negative pressure suction device and a positive and negative pressure alternative control device which can control and manage the positive pressure oxygen supply device and the negative pressure suction device independently or simultaneously; the positive-negative pressure alternative control device can perform pulse type management on the positive-pressure oxygen supply device and adjust oxygen supply frequency, air quantity and upper pressure limit; the negative pressure suction device can be managed in a pulse mode, and the negative pressure frequency and the lower pressure limit are adjusted; when the positive pressure oxygen supply device and the negative pressure suction device operate simultaneously, the positive pressure oxygen supply time of the positive pressure oxygen supply device and the negative pressure suction time of the negative pressure suction device are distributed in a crossed manner, and the positive pressure oxygen supply and the negative pressure suction operate alternately.

2. The positive and negative pressure alternating breathing support system of claim 1, wherein: the positive-negative pressure alternative control device comprises a positive-pressure oxygen supply tube (1), a negative-pressure suction tube (2) and a positive-negative pressure alternative controller;

one end of the positive pressure oxygen supply pipe (1) is arranged on the head side of the patient, and the other end of the positive pressure oxygen supply pipe is connected with the positive pressure oxygen supply device; one end of the negative pressure suction tube (2) is arranged on the head side of the patient, and the other end of the negative pressure suction tube is connected with the negative pressure suction device; the positive-negative pressure alternative controller comprises a positive pressure controller (3) arranged on the positive pressure oxygen supply pipe (1) and a negative pressure controller (4) arranged on the negative pressure suction pipe (2); the positive pressure controller (3) is connected with the positive pressure valve (5), and the negative pressure controller (4) is connected with the negative pressure valve (6).

3. The positive and negative pressure alternating breathing support system of claim 2, wherein: the positive-negative pressure alternative control device also comprises a double-channel positive-negative pressure alternative breathing support pipeline, and the tail ends of the double-channel positive-negative pressure alternative breathing support pipeline are respectively provided with an interface; the positive pressure oxygen supply pipe (1) and the negative pressure suction pipe (2) are of a double-pipeline structure; the tail ends of the double pipelines are respectively provided with a connector which is matched with the connector at the tail end of the double-pipeline positive-negative pressure alternative breathing support pipeline.

4. The positive and negative pressure alternating breathing support system of claim 2, wherein: the positive and negative pressure alternative controller is a single alternative control switch; the alternating control switch comprises a positive and negative pressure pipeline fixing seat (7), two ends of the positive and negative pressure pipeline fixing seat (7) are in a convex shape, a push rod (8) is arranged in the middle of the positive and negative pressure pipeline fixing seat (7), the push rod (8) is of an asymmetric structure with the semi-circular radius of one side smaller than that of the other side, the push rod (8) is installed on an output shaft of an external rotating device, supporting plates (9) are arranged on two sides, located on the positive and negative pressure pipeline fixing seat (7), of the push rod (8), the two supporting plates (9) are elastically connected through a first spring (10), ejector blocks (11) are respectively arranged on one sides, located on the positive and negative pressure pipeline fixing seat (7), of the two supporting plates (9), and the size of each ejector block (11) is matched with the convex structures at two ends of the; the positive pressure oxygen supply pipe (1) and the negative pressure suction pipe (2) penetrate into the protruding structures at the two ends of the positive and negative pressure pipeline fixing seat (7) respectively.

5. The positive and negative pressure alternating breathing support system of claim 2, wherein: the positive-negative pressure alternative controller is used by connecting two alternative control switches, and the positive-pressure oxygen supply pipe (1) is arranged in a protruding structure of a positive-negative pressure pipeline fixing seat (7) on one side of one alternative control switch; the negative pressure suction tube (2) is arranged in a protruding structure of a positive and negative pressure pipeline fixing seat (7) on one side of the other alternative control switch.

6. The positive and negative pressure alternating breathing support system of claim 2, wherein: positive negative pressure alternative controller is including advancing air outlet piston barrel (12), one side of advancing air outlet piston barrel (12) is equipped with first oxygen entry (13), advance air outlet piston barrel (12) and link to each other with the apparatus of oxygen supply through first oxygen entry (13), be equipped with first check valve (14) on first oxygen entry (13), with be equipped with first oxygen export (15) on the business turn over air piston barrel (12) of the same one side of first oxygen entry (13), advance air outlet piston barrel (12) through first oxygen export (15) with malleation oxygen supply pipe (1) links to each other, be equipped with second check valve (16) on first oxygen export (15), with be equipped with first malleation adjustable safety escape valve (17) on business turn over air piston barrel (12) of the same one side of first oxygen export (15), the upper limit value of pressure of first malleation adjustable safety escape valve (17) can be adjusted, when the gas pressure exceeds the set upper pressure limit of the first positive pressure adjustable safety escape valve (17), gas can escape through the first positive pressure adjustable safety escape valve (17);

a first air inlet piston head (18), a first air inlet piston rod (19), a first air inlet driven wheel (20), a first air inlet driven wheel (21) and a first air inlet power device (22) are sequentially arranged in the air inlet and outlet piston cylinder (12), the first air inlet piston head (18) is fixedly connected with the first air inlet piston rod (19), the other end of the first air inlet piston rod (19) is fixed on the first air inlet driven wheel (20), the first air inlet driven wheel (20) is meshed with the first air inlet driven wheel (21), the first air inlet driven wheel (21) is connected with the power output end of the first air inlet power device (22), the first air inlet power device (22) is positioned on one side of the relative position of the first air inlet (13), the first oxygen outlet (15) or the first positive pressure adjustable safety escape valve (17), and the air inlet and outlet piston cylinder (12) is connected with the first oxygen inlet (13), A first negative pressure gas inlet (23), a first negative pressure gas outlet (24) and a first negative pressure adjustable safety air inlet valve (25) are arranged at one end of the first oxygen outlet (15) or the first positive pressure adjustable safety escape valve (17) at the opposite position, the first negative pressure gas inlet (23) is connected with the negative pressure suction pipe (2), a first liquid storage bag (26) is arranged on the negative pressure suction pipe (2), a first waterproof ventilation valve (27) is arranged at the outlet of the first liquid storage bag (26), a third one-way valve (28) is arranged on the first negative pressure gas inlet (23), the first negative pressure gas outlet (24) is connected with a negative pressure suction device, a fourth one-way valve (29) is arranged on the first negative pressure gas outlet (24), the lower limit of the negative pressure of the first negative pressure adjustable safety air inlet valve (25) can be adjusted, and when the gas negative pressure is lower than the lower limit of the set pressure of the first negative pressure adjustable safety air inlet valve (25), gas can be gained through the first negative pressure adjustable safety air inlet valve (25).

7. The alternating positive and negative pressure respiratory support system according to claim 6, wherein: the positive and negative pressure alternating controller comprises a positive pressure frequency controller and a negative pressure frequency controller;

the positive pressure frequency controller comprises an air inlet piston cylinder (30), a second oxygen inlet (31) connected with an external oxygen supply device is formed in the air inlet piston cylinder (30), a fifth one-way valve (32) is formed in the second oxygen inlet (31), a second air inlet piston head (33), a second air inlet piston rod (34), a second air inlet driven wheel (35), a second air inlet driving wheel (36) and a second air inlet power device (37) are sequentially arranged in the air inlet piston cylinder (30), the power output end of the second air inlet power device (37) is connected with the second air inlet driving wheel (36), the second air inlet driving wheel (36) is meshed with the second air inlet driven wheel (35), one end of the second air inlet piston rod (34) is installed on the second air inlet driven wheel (35), and the other end of the second air inlet piston head (33) is fixed, a second oxygen outlet (38) is formed in one side, not provided with a second air inlet power device (37), of the air inlet piston cylinder (30), the second oxygen outlet (38) is connected with the positive pressure oxygen supply pipe (1), a sixth one-way valve (39) is arranged on the second oxygen outlet (38), and the first positive pressure adjustable safety escape valve (17) is arranged on the air inlet piston cylinder (30) adjacent to the second oxygen outlet (38);

the negative pressure frequency controller comprises a second liquid storage bag (41) connected with the negative pressure suction tube (2), a second waterproof vent valve (42) is arranged at the outlet end of the second liquid storage bag (41), the outlet end of the second liquid storage bag (41) is connected with a second exhaled waste gas inlet (44) on the air outlet piston cylinder (43), a seventh one-way valve (45) is arranged on the second exhaled waste gas inlet (44), one end in the air outlet piston cylinder (43) is connected with an air outlet piston rod (47) through a sealed air outlet piston head (46), the other end of the air outlet piston rod (47) is fixed with an air outlet driven wheel (48), the air outlet driven wheel (48) is meshed with the air outlet driving wheel (49), the air outlet driving wheel (49) is fixed with the power output end of the air outlet power device (50), a second exhaled waste gas outlet (51) is arranged on the side, on which is not provided with the air outlet power device (50), of the air outlet piston cylinder (43), the second exhale waste gas export (51) link to each other with external negative pressure suction device, be equipped with eighth check valve (52) on second exhale waste gas export (51), with be equipped with on the piston cylinder (43) of giving vent to anger that second exhale waste gas export (51) is adjacent first negative pressure adjustable safety admission valve (25).

8. The alternating positive and negative pressure respiratory support system according to claim 6 or 7, wherein: the positive and negative pressure alternating controller also comprises a first air injection quantity adjusting mechanism capable of adjusting the moving range of the air inlet and outlet piston cylinder (12) so as to adjust the oxygen supply capacity, a second air injection quantity adjusting mechanism capable of adjusting the moving range of the air inlet piston cylinder (30) so as to adjust the oxygen supply capacity, and a third air injection quantity adjusting mechanism capable of adjusting the moving range of the air outlet piston cylinder (43) so as to adjust the exhaled waste gas suction capacity;

the first air injection quantity adjusting mechanism is a first air inlet piston rod (19) which can be contracted and temporarily locked and has adjustable length, the second air injection quantity adjusting mechanism is a second air inlet piston rod (34) which can be contracted and temporarily locked and has adjustable length, and the third air injection quantity adjusting mechanism is an air outlet piston rod (47) which can be contracted and temporarily locked and has adjustable length;

the first air injection quantity adjusting mechanism further comprises a first sliding groove (201) arranged on the first air inlet driven wheel (20), and the first air inlet piston rod (19) is movably mounted on the first sliding groove (201); the second air injection quantity adjusting mechanism further comprises a second sliding groove (40) arranged on the second air inlet driven wheel (35), and the second air inlet piston rod (34) is movably mounted on the second sliding groove (40); the third air injection quantity adjusting mechanism further comprises a third sliding groove (53) arranged on the air outlet driven wheel (48), and the air outlet piston rod (47) is movably mounted on the third sliding groove (53).

9. The alternating positive and negative pressure respiratory support system according to claim 6 or 7, wherein: the first positive-pressure adjustable safety escape valve (17) comprises a first sleeve (1701), a first sleeve rod (1702) penetrates through the first sleeve (1701) vertically, a through hole is formed in the bottom of the first sleeve (1701), the through hole is communicated with an air inlet and outlet piston cylinder (12), the first sleeve (1701) is communicated with the outside, a second spring (1703), a first safety valve plate (1704) and a first adjustable valve plate (1705) are sequentially sleeved on the first sleeve rod (1702) from bottom to bottom, threads are arranged on the outer wall of the first sleeve rod (1702), threads are arranged on the inner wall of the first adjustable valve plate (1705), the first adjustable valve plate (1705) is in threaded connection with the first sleeve rod (1702), the first safety valve plate (1704) is movably connected with the first sleeve rod (1701702), a through hole is formed in the first adjustable valve plate (1705), and a sealing ring is arranged on the periphery of the first adjustable valve plate (5), first sleeve (1701) inner wall both sides are equipped with the bead, first safety valve block (1704) and first adjustable valve block (1705) periphery be equipped with bead assorted recess.

10. The alternating positive and negative pressure respiratory support system according to claim 6 or 7, wherein: the first negative pressure adjustable safety air inlet valve (25) comprises a second sleeve (2501), a second sleeve rod (2502) penetrates through the second sleeve (2501) vertically, a through hole is formed in the bottom of the second sleeve (2501), the through hole is communicated with the second sleeve (2501), the second sleeve (2501) is communicated with the outside, a second adjustable valve plate (2503), a second safety valve plate (2504) and a third spring (2505) are sequentially sleeved on the second sleeve rod (2502) from bottom to bottom, threads are arranged on the outer wall of the second sleeve rod (2502), threads are arranged on the inner wall of the second adjustable valve plate (2503), the second adjustable valve plate (2503) is in threaded connection with the second sleeve rod (2502), the second safety valve plate (2504) is movably connected with the second sleeve rod (2502), and a limiting block for placing the third spring (2505) is arranged at the bottom of the second sleeve rod (2502), be equipped with the through-hole on second adjustable valve block (2503), second adjustable valve block (2503) periphery is equipped with the sealing washer, second sleeve (2501) inner wall both sides are equipped with the bead, second safety valve block (2504) and second adjustable valve block (2503) periphery be equipped with bead assorted recess.