CN113398394A

CN113398394A - Portable general life support system for field emergency treatment

Info

Publication number: CN113398394A
Application number: CN202110682162.8A
Authority: CN
Inventors: 李会凤; 林淑芃; 史长虹
Original assignee: Sanhe Keda Industrial Co ltd
Current assignee: Sanhe Keda Industrial Co ltd
Priority date: 2021-06-20
Filing date: 2021-06-20
Publication date: 2021-09-17
Anticipated expiration: 2041-06-20
Also published as: CN113398394B

Abstract

The invention discloses a portable general life support system for field emergency treatment, which comprises a life support system host quickly positioned on a stretcher through a stretcher fixing device, wherein the life support system host comprises a host shell and a transfusion device; the fixed host computer main support that is provided with in inside of host computer shell, the inside location of host computer main support is provided with and is used for providing mixed oxygen and can avoid taking place the mechanical ventilation module of the unable exhaust condition of patient's expired gas and link to each other with mechanical ventilation module and be used for breathing the treatment and can guarantee the breathing module of patient's autonomic breathing to the patient, the inside of host computer main support still is provided with and is used for the whole power module that supplies power of carrying out for the device, the top of host computer main support is provided with system control module. The invention can realize the transfusion treatment and the respiratory treatment of the patient, can ensure that the patient continuously and normally carries out the respiratory treatment, and can not influence the normal respiration of the patient even if the device fails.

Description

Portable general life support system for field emergency treatment

Technical Field

The invention relates to the technical field of medical equipment, in particular to a portable universal life support system for field emergency treatment.

Background

In modern clinical medicine, a ventilator has been widely used in respiratory failure due to various reasons, anesthesia and breathing management during major surgery, respiratory support therapy and emergency resuscitation, and has a very important position in the modern medical field as an effective means for manually replacing the function of spontaneous ventilation. The breathing machine is a vital medical equipment which can prevent and treat respiratory failure, reduce complications and save and prolong the life of a patient.

Ventilators are artificial mechanical ventilators designed for patients requiring respiratory support, respiratory therapy, and resuscitation, and typically employ a high pressure gas source to provide artificial mechanical ventilation for patients requiring respiratory support, respiratory therapy, and resuscitation.

The war field wounded personnel can carry out on-site first aid, transfer and later delivery to a hospital in the golden time, and the death rate of the wounded personnel can be effectively reduced. At present, various medical devices occupy a large amount of space in the process of treating and transporting large-scale wounded persons, and more patients cannot be treated. And the emergency equipment has large volume, short oxygen supply time of the compressed oxygen bottle and danger. In the process of carrying out on-site first aid in a battlefield, the installation mode of the first aid equipment is complex and long in time. Therefore, the portable universal life support system integrates wounded personnel transportation and rescue implementation and has a high-level life support function.

Life support systems currently on the market have the following drawbacks:

1) dual-tube, electro-mechanical ventilation modules that support invasive ventilation typically include modules such as large-bore inhalation valves and safety valves, are complex, and add weight, volume, and cost, which are disadvantageous for portable, universal life support systems that require small size and light weight for use in field environments. And, if the valve on the mechanical ventilation module takes place the jam phenomenon, because of exhaling the passageway singleness, the gas of patient's exhalation can't be discharged, causes the influence to patient's personal safety.

2) The traditional breathing module only conveys oxygen stored in the box body to a patient for use through an oxygen conveying pipe and a breathing mask; however, when the power of the breathing module is interrupted or the breathing module fails, the patient cannot obtain oxygen through the portable life support system, and in the process, because the breathing mask is fastened on the face of the patient, the patient cannot inhale autonomously due to oxygen delivery shortage, and great potential safety hazard exists.

3) The existing life support system does not have the infusion function generally and has a single function. The life support system can be used in a severe outdoor environment, the infusion rod assembly on the market at present does not have a waterproof sealing function, and the situation that liquid in the infusion rod assembly enters the life support system due to jolt in the conveying process can occur when the infusion rod assembly on the market at present is arranged on the life support system, so that the function of the life support system is lost.

In addition, the transfusion rod component can move due to jolt in the conveying process, so that the transfusion rod component falls off from the life support system, and the normal use condition of the life support system is influenced due to instability.

4) The air mixer is part of the ventilator and functions to mix air with oxygen. The air mixer in the prior art does not usually have the function of heating the mixed gas, and the breathing machine in the alpine environment can supply the air for the breathing of the patient to be wet and cold, so that the patient is uncomfortable. In addition, the air and oxygen mixing mode of the existing air mixer is that the gas in the oxygen mixing cavity is pumped out by a turbine and is mixed in a flowing mode in the cavity, so that the mixing time is short, the mixing degree is insufficient, and the mixing efficiency is not high.

5) At present, the fixing device which can be quickly disassembled and assembled is not arranged on the market, the fixing device is also heavy and easy to fall off, the time for carrying out first aid on a patient is prolonged, and the fixing device cannot be suitable for the field quick first aid condition.

6) In the field transportation process, the condition that the rotational speed of the turbine is controlled unstably due to the bumping of the breathing module further causes the instability of the flow rate or pressure of mechanical ventilation, so that the comfort of the patient using the mechanical ventilation can be reduced, and even the treatment effect of the mechanical ventilation on the patient can be reduced.

7) The existing life support system has a complex structure, occupies a large amount of space, has heavier weight and is not beneficial to carrying.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a portable universal life support system for field emergency treatment, which is used for solving the problems in the background art, simplifying a mechanical ventilation module, meeting the requirements of the portable universal support system on weight and volume, preventing the situation that air cannot be exhausted when a valve on the mechanical ventilation module is blocked, enabling a patient to breathe autonomously when a breathing module fails, avoiding the situation of suffocation, enabling an infusion device of the life support system to have a waterproof sealing function, effectively enabling external liquid to enter the life support system, and ensuring the normal and continuous operation of the life support system.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows.

A portable general life support system for field emergency treatment comprises a life support system host quickly positioned on a stretcher through a stretcher fixing device, wherein the life support system host comprises a host shell and an infusion device which is arranged above the host shell and has a waterproof sealing function; the inside of host computer shell is fixed and is provided with the host computer main support, the inside location of host computer main support is provided with and is used for providing mixed oxygen and can avoid taking place the mechanical ventilation module of the unable exhaust condition of patient's expired gas and links to each other with mechanical ventilation module and be used for breathing the treatment and can guarantee the breathing module of patient's autonomic breathing, the inside of host computer main support still is provided with and is used for the whole power module that supplies power of device, the top of host computer main support is provided with system control module, the controlled end of mechanical ventilation module is connected in system control module's output.

According to the technical scheme, the mechanical ventilation module comprises an air inlet system used for providing an air source for a patient, an exhaust system used for exhausting air exhaled by the patient into the atmosphere, and an air delivery main pipe communicated between the air inlet system and the exhaust system and communicated with the breathing module.

According to the technical scheme, the air inlet system comprises an air conveying system for inputting air in the environment, a low-pressure oxygen conveying system for inputting low-pressure oxygen and a high-pressure oxygen conveying system for inputting high-pressure oxygen, the air conveying system, the low-pressure oxygen conveying system and the high-pressure oxygen conveying system are connected in an intersecting manner to form an oxygen mixing device, an air outlet end of the oxygen mixing device is connected with an air suction main pipe for providing an air source for a patient, a turbine for pumping mixed air in the oxygen mixing device is arranged on the air suction main pipe, a first one-way valve for preventing air exhaled by the exhaust system from entering the oxygen mixing device is further arranged on the air suction main pipe, and an air resistance passage connected in parallel with the first one-way valve is connected to the air suction main pipe between the air inlet end of the first one-way valve and the air outlet end of the first one-way;

the exhaust system comprises an expiration main pipe communicated with the gas transmission main pipe, and an expiration valve used for controlling the pressure and the flow rate of gas exhaled by the patient and a third one-way valve used for preventing external gas from entering the expiration main pipe are sequentially arranged on the expiration main pipe.

Further optimize technical scheme, inhale and be provided with the gaseous detection module that is used for detecting the gaseous situation on being responsible for and exhaling the person in charge respectively, gaseous detection module's output is connected in system control module's input, and gaseous detection module sets up on the host computer main support that is located the breathing module below.

According to the technical scheme, the turbine is a variable-speed turbine which adjusts output gas flow and pressure parameters in a variable-speed mode.

According to the technical scheme, the turbine is arranged in the main bracket of the main machine through a turbine fixing device;

the turbine fixing device comprises a turbine support arranged on the outer side of the turbine, a first through hole for allowing a motor, a wire and a terminal of the turbine to penetrate is formed in the bottom end of the turbine support, a second through hole communicated with an air inlet of the turbine is formed in the top end of the turbine support, and a notch communicated with an air outlet of the turbine is formed in the side portion of the turbine support; be provided with the first buffer assembly that is used for playing the cushioning effect between the casing bottom of the inner wall bottom of turbine support and turbine, be provided with the second buffer assembly that is used for playing the cushioning effect between the casing top of the inner wall top of turbine support and turbine.

According to the further optimized technical scheme, the oxygen mixing device comprises an oxygen mixing module main frame, an oxygen inlet, an air inlet and a mixed gas outlet are formed in the oxygen mixing module main frame, and valves are respectively arranged on the oxygen inlet and the air inlet; the inside of mixing oxygen module body frame is provided with the mixed oxygen cavity that is linked together with the mist export, and the inside intercommunication of mixing oxygen cavity is provided with respectively and is linked together with oxygen entry and air inlet, is used for adopting spiral mixed oxygen heating module that mixes the form of mixing gas and heat and carry out the heating with the oxygen that lets in, and the controlled end of spiral mixed oxygen heating module is connected in system control module's output.

According to the technical scheme, the breathing module is communicated with the gas transmission main pipe through a breathing gas interface module; the breathing module comprises a breathing air suction port module and a breathing air exhaust port module which are respectively communicated with the gas transmission main pipe;

the breathing air suction port module comprises an air suction port arranged on the main bracket of the main machine through a left fixed bracket, and the air suction port comprises an air suction port body; the right end of the air suction port body is an air inlet, and is arranged on the main bracket of the main machine through a right fixing bracket and communicated with an air inlet system of the mechanical ventilation module; the left end of the air suction port body is an air outlet for supplying air to a patient, and the left end of the air suction port body extends out of the left fixing support; an autonomous inspiration hole is further formed in the side wall of the inspiration port body, and an autonomous inspiration valve which enables an inspiration port at the left end of the inspiration port body to be communicated with the outside when a breathing module fails is assembled in the autonomous inspiration hole.

According to the technical scheme, the infusion device comprises an infusion rod component for hanging an infusion bag, a waterproof silica gel component for preventing liquid in the infusion rod component from flowing into a host shell and an infusion rod fixing component for positioning the infusion rod component and the waterproof silica gel component on the host shell; the waterproof silica gel component comprises a waterproof jacket which is embedded on the side part of the transfusion rod fixing component in a sealing manner and wraps the bottom end of the transfusion rod component.

According to the technical scheme, the stretcher fixing device comprises a stretcher supporting frame contacted with the side face of the stretcher and a stretcher rotating baffle matched with the stretcher supporting frame to clamp the stretcher, and the stretcher rotating baffle is arranged on the stretcher supporting frame through a rotating assembly capable of driving the stretcher rotating baffle to rotate so as to realize quick assembly and disassembly of the stretcher; the upper part of the stretcher supporting frame is connected with a stretcher adapter plate fixedly arranged on the main machine through a locking component.

Due to the adoption of the technical scheme, the technical progress of the invention is as follows.

According to the invention, the infusion device with the waterproof sealing function is arranged on the main support of the main machine, and the mechanical ventilation module which provides mixed oxygen for a patient and can avoid the condition that the expired gas of the patient cannot be exhausted and the breathing module which is used for carrying out breathing treatment on the patient and can ensure that the patient can inhale the breath independently are arranged in the main support of the main machine, so that the infusion device can realize infusion treatment and breathing treatment on the patient, can ensure that the patient can continuously and normally carry out breathing treatment, cannot influence the normal breathing of the patient even if the device fails, is light and handy in the whole weight, is very convenient to install and disassemble, and can be better suitable for the outdoor quick first aid condition.

The invention can be used for, but is not limited to, portable universal life support systems, battery management modules, simplifies the electromechanical ventilation module, thereby meeting the requirements of the portable universal support system on weight and volume, and being a double-tube design for invasive ventilation. The invention cancels a large-diameter suction valve, and realizes the change of the required gas flow and pressure by the speed change of the turbine, thereby bringing the advantages of weight, volume and cost; the present invention eliminates the safety valve design and also brings the advantages of weight, volume and cost. According to the invention, the air resistance passage which is connected in parallel with the first one-way valve is connected and arranged on the air suction main pipe between the air inlet end of the first one-way valve and the air outlet end of the first one-way valve, so that when the expiratory valve is blocked, the air exhaled by a patient can be discharged into the atmosphere through the air resistance passage, and the condition that the air cannot be discharged when the valve on the mechanical ventilation module is blocked is effectively prevented.

According to the invention, the autonomous inspiration valve is arranged on the inspiration port body, so that the autonomous inspiration function of a patient can be realized when the breathing module fails, the patient can breathe normally, the asphyxia phenomenon is prevented, and safe and reliable treatment conditions are provided for the patient. The autonomous air suction one-way valve in the autonomous air suction valve is of a diaphragm structure, has the characteristics of light weight and high reliability, and is suitable for the use requirement of a portable universal life support system.

The invention can bear heavier infusion bags, keep good stability after hanging the infusion bags, has good stability and strength, can be well sealed with the life support system, and effectively ensures that external liquid enters the life support system. According to the invention, the waterproof sleeve is embedded on the side part of the transfusion rod fixing component in a sealing manner and wraps the bottom end of the transfusion rod component, so that liquid in the transfusion rod component can be effectively prevented from entering the host, the transfusion device of the life support system has a waterproof sealing function, external liquid can effectively enter the life support system, and the normal and continuous operation of the life support system is ensured.

The spiral oxygen mixing and heating module can mix air and oxygen and heat the mixed air, so that the spiral oxygen mixing and heating module can be applied to mixing of air and oxygen in a high-cold environment, the spiral oxygen mixing and heating module adopts a spiral air mixing mode, the mixing efficiency is high, the oxygen and the air are respectively introduced into two spiral pipelines, due to the characteristic of a spiral structure, the air is accelerated in the pipelines, and the air and the oxygen respectively collide through the inclined through holes in the pipelines, so that the air mixing efficiency is improved, and comfortable air is provided.

The stretcher rotating baffle plate is arranged on the stretcher supporting frame through the rotating assembly, and when the stretcher needs to be disassembled, the rotating assembly is only required to be rotated, so that the rapid disassembly and assembly of the stretcher are realized; the stretcher supporting frame is connected with the stretcher transfer plate through the locking assembly, so that the rapid disassembly and assembly of the host and the fixing device can be realized; the fixing scheme can ensure that the host is reliably fixed on the stretcher and can adapt to the complex severe environment in the field.

The turbine is clamped up and down through the first buffer assembly and the second buffer assembly arranged in the turbine support, so that the turbine can be restrained to be firm and reliable, and the turbine is prevented from loosening; the device can play a role in vibration reduction, reduces damage to the turbine caused by external impact, and simultaneously constructs a channel connected with the outlet and the inlet of the turbine, so that reliable sealing between the channel and the turbine is ensured.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a life support system host according to the present invention;

FIG. 2 is a front view of FIG. 1 in accordance with the present invention;

FIG. 3 is a rear view of FIG. 1 in accordance with the present invention;

FIG. 4 is a left side view of FIG. 1 in accordance with the present invention;

FIG. 5 is a top view of FIG. 1 in accordance with the present invention;

FIG. 6 is a bottom view of FIG. 1 of the present invention;

FIG. 7 is a schematic diagram of the mechanical breather module of the present invention;

FIG. 8 is an exploded view of the oxygen mixing device of the present invention;

FIG. 9 is a rear view of the oxygen mixing device of the present invention;

FIG. 10 is a cross-sectional view taken along line A-A of FIG. 9 in accordance with the present invention;

FIG. 11 is a schematic structural view of a main frame of an oxygen mixing module in the oxygen mixing device according to the present invention;

FIG. 12 is an exploded view of the turbine fixture of the present invention;

FIG. 13 is a schematic illustration of the vibration signal calculation of the present invention;

FIG. 14 is a schematic diagram of vibration signal compensation according to the present invention;

FIG. 15 is an exploded view of the respiratory inhalation module of the present invention;

FIG. 16 is a schematic view of an infusion device in accordance with the present invention;

FIG. 17 is a cross-sectional view of an infusion device in accordance with the disclosures made herein;

FIG. 18 is a schematic view of a portion of the structure of FIG. 17 in accordance with the present invention;

fig. 19 is an exploded view of the litter securing device of the invention;

fig. 20 is a schematic view of the construction of the litter securing device of the invention;

fig. 21 is a cross-sectional view of the litter securing device of the invention.

Wherein: 1. the main frame comprises a main frame main support 11, a main frame bottom plate 12, a main frame shell 13, an interface board 14, trachea limiting metal plates a and 15, a first cushion pad of an exhalation assembly, 16, a second cushion pad of the exhalation assembly, 17, a first pipeline, 18, a trachea limiting metal plate 19, a second pipeline, 20 and a third pipeline;

2. a breathing module, 21, a breathing gas interface module, 22, a breathing gas inlet module, 221, an inlet body, 222, an autonomous inhalation valve sealing ring, 223, an autonomous inhalation valve seat, 224, an autonomous inhalation check valve, 225, a plug sealing ring, 226, an autonomous inhalation check valve seat, 227, a left fixing support, 228, an exhalation reverse check valve, 229, an exhalation reverse check valve sealing ring, 2210, an exhalation reverse check valve seat, 2211, a flow sensor, 2212, a right fixing support, 2213, a fastening screw, 23 and a breathing gas outlet module;

3. a mechanical ventilation module 31, an air delivery pipeline 32, a low-pressure oxygen delivery pipeline 33, a high-pressure oxygen delivery pipeline 35, a turbine 36, an inspiration main pipe 37, a first one-way valve 38, an air resistance passage 310, a first filter 311, a second filter 312, a second one-way valve 313, a third filter 314, a second pressure sensor 315, a fourth filter 316, a first flow sensor 317, a second flow sensor 318, an expiration main pipe 320, an expiration valve 321, a third one-way valve 322, an air delivery main pipe 323 and a proportional valve;

4. the system comprises an oxygen mixing device, 41, an oxygen mixing module main frame, 42, a spiral oxygen mixing heating module, 421, an oxygen mixing heating rod, 422, an oxygen mixing heating rod outer sleeve, 423, a spiral oxygen pipeline, 424, a spiral air pipeline, 425, an inclined through hole, 43, an oxygen inlet, 44, an air inlet, 45, an oxygen conveying cavity, 46, an air conveying cavity, 47, an air inlet turbine pressurizing valve, 471, a turbine pressurizing valve end cover, 472, a turbine fan, 473, a turbine pressurizing valve main frame, 48, an air outlet turbine pressurizing valve, 49, an oxygen mixing cavity, 491, an oxygen mixing module rear baffle, 492, an oxygen mixing module front baffle, 410 and a mixed gas outlet;

5. the turbine fixing device comprises a turbine fixing device 52, a turbine reverse snap ring 53, a turbine fixing pin 54, a turbine outlet silicone tube 55, a turbine damping pad 56, a turbine base support 57, a turbine inlet silicone tube 58, a turbine top support 59 and a fastening screw;

6. the infusion device comprises an infusion device body 61, an infusion rod assembly 61a, an infusion rod hook 61b, an infusion rod 61c, a spring piece 61d, a pressing column 61e, an unlocking column 62, a waterproof silica gel assembly 62a, an interface plug 62b, a waterproof sleeve 63, an infusion rod fixing assembly 63a, an infusion rod fixing sleeve 63b and an infusion rod fixing nut;

7. the stretcher fixing device comprises a stretcher fixing device 71, a stretcher rotating baffle plate 72, a clamping friction plate 73, a silica gel gasket 74, a friction gasket 75, a stretcher rotating shaft 76, a stretcher 77, a stretcher supporting frame 78, a rotating handle 79, an unlocking handle 79a, an unlocking handle hook 710, a limiting positioning pin 711, a compression spring 712, a stretcher supporting frame pad 713, a guide column 714, a stretcher adapter plate 714a and a stretcher adapter plate bayonet;

8. a system control module;

9. the system comprises a gas detection module, 911, a first pressure detection mechanism, 911, a first connecting branch pipe, 912, a first electromagnetic valve, 913, a first pressure sensor, 914, a sixth filter, 92, an expiration detection mechanism, 921, a third flow sensor, 922, an expiration branch pipe, 923, a fifth filter, 924, a seventh filter, 925, a second electromagnetic valve, 926, a third electromagnetic valve, 927, a third pressure sensor, 928 and a fourth pressure sensor;

10. power module, 101, lithium ion battery, 102, battery interface board.

Detailed Description

The invention will be described in further detail below with reference to the figures and specific examples.

A portable universal life support system for field emergency treatment, as shown in fig. 1 to 21, comprises a life support system host quickly positioned on a stretcher 76 by a stretcher fixing device 7, wherein the life support system host comprises a host shell and an infusion device 6 which is arranged above the host shell and has a waterproof sealing function. The inside of host computer shell is fixed and is provided with host computer main support 1, and the inside location of host computer main support 1 is provided with mechanical ventilation module 3 and breathing module 2, and mechanical ventilation module 3 is located breathing module 2's top. The mechanical ventilation module 3 is used for providing mixed oxygen for the patient and can avoid the situation that the expired gas of the patient cannot be exhausted. Breathing module 2 links to each other with mechanical ventilation module 3 and is used for breathing the treatment to the patient to can guarantee that the patient is independently breathed in, when the device is whole to break down unable normal air feed promptly, can carry out the outside air of automatic inhaling through breathing module 2, the gas of patient's exhalation can be discharged through mechanical ventilation module 3.

A system control module 8 is arranged above the main support 1 of the main machine, and the controlled end of the mechanical ventilation module 3 is connected with the output end of the system control module 8.

Mechanical ventilation module 3, shown in connection with fig. 7, includes an air inlet system for providing a source of air to the patient, an exhaust system for exhausting the patient's exhaled air to the atmosphere, and an air delivery manifold 322 disposed in communication between the air inlet system and the exhaust system and in communication with breathing module 2.

The air intake system comprises an air delivery system, a low-pressure oxygen delivery system, a high-pressure oxygen delivery system, an oxygen mixing device 4, a main air suction pipe 36, a turbine 35, a first one-way valve 37 and an air blocking passage 38.

The air conveying system is used for inputting air in the environment, the air conveying system comprises an air conveying pipeline 31, one end of the air conveying pipeline is communicated with the outside atmosphere, the other end of the air conveying pipeline is communicated with the oxygen mixing device 4, a first filter 310 and a second filter 311 are arranged on the air conveying pipeline 31, and the first filter 310 and the second filter 311 are used for filtering the outside air.

The low-pressure oxygen delivery system is used for inputting low-pressure oxygen, the low-pressure oxygen delivery system comprises a low-pressure oxygen delivery pipeline 32, one end of the low-pressure oxygen delivery pipeline is communicated with the low-pressure oxygen delivery device, the other end of the low-pressure oxygen delivery pipeline is communicated with the oxygen mixing device 4, and a second one-way valve 312, a third filter 313 and a second flow sensor 317 are arranged on the low-pressure oxygen delivery pipeline 32. The second check valve 312 is provided to prevent the high pressure oxygen in the mixer of the oxygen mixing device 4 and the high pressure oxygen delivery system from entering the low pressure oxygen delivery device. The third filter 313 is used for filtering the low pressure oxygen on the low pressure oxygen delivery line 32. Second flow sensor 317 is used to detect the total flow of oxygen delivered by the low pressure oxygen delivery system as well as the high pressure oxygen delivery system.

The high pressure oxygen delivery system is used for inputting high pressure oxygen, the high pressure oxygen delivery system comprises a high pressure oxygen delivery pipeline 333, one end of the high pressure oxygen delivery pipeline is communicated with the high pressure oxygen delivery device, the other end of the high pressure oxygen delivery pipeline is communicated with the low pressure oxygen delivery pipeline 32, and a fourth filter 315, a second pressure sensor 314 and a proportional valve 323 are arranged on the high pressure oxygen delivery pipeline 333. The fourth filter 315 is used to filter the high pressure oxygen, and the second pressure sensor 314 is used to detect the pressure of the high pressure oxygen delivery line 333. The proportional valve 323 is used to regulate the flow rate of the high pressure oxygen.

The air delivery system, the low-pressure oxygen delivery system and the high-pressure oxygen delivery system are connected with an oxygen mixing device 4 in an intersecting manner, the air outlet end of the oxygen mixing device 4 is connected with an air suction main pipe 36 for providing an air source for a patient, a turbine 35 is arranged on the air suction main pipe 36, and the turbine 35 is used for pumping mixed gas in the oxygen mixing device 4 and adjusting the flow and pressure parameters of the output gas in a speed-changing manner.

The main inspiration pipe 36 is also provided with a first one-way valve 37 for preventing the gas exhaled by the exhaust system from entering the oxygen mixing device 4, and a gas resistance passage 38 connected in parallel with the first one-way valve 37 is connected to the main inspiration pipe 36 between the gas inlet end of the first one-way valve and the gas outlet end of the first one-way valve.

A first flow sensor 316 for detecting the flow rate of gas in the main intake pipe 36 is provided in the main intake pipe 36 between the turbine 35 and the first check valve 37.

The exhaust system comprises an expiration main pipe 318 communicated with an air delivery main pipe 322, and an expiration valve 320 and a third one-way valve 321 are sequentially arranged on the expiration main pipe 318.

The exhalation valve 320 is used to control the pressure and flow rate of the patient's exhaled air.

The third check valve 321 is used to prevent outside air from entering the expiratory main duct 318.

Compared with the defects of the traditional electromechanical ventilation module, the mechanical ventilation module adopts the following measures:

A. the large-diameter air suction valve (the large-diameter air suction valve is an electrically controllable valve, and the flow and pressure parameters of the output gas of the turbine are adjusted by adjusting the opening of the valve) at the downstream of the turbine in the traditional electromechanical ventilation module, and the flow and pressure parameters of the output gas are directly adjusted by the variable speed of the turbine.

B. And (C) changing a turbine driving circuit and driving software (or algorithm) to change constant speed control into variable speed control correspondingly to the step A.

C. Because a large-diameter inhalation valve is eliminated, a safety valve of a traditional electromechanical ventilation module is eliminated (note: the traditional safety valve is realized by matching an electromagnet with the large-diameter valve and is used for providing an autonomous inhalation passage when the respirator fails), and an autonomous inhalation passage is directly provided by a turbine air inlet and a turbine.

D. Because a large-diameter inhalation valve is cancelled, a first one-way valve is added in the main inhalation pipe, and the phenomenon that the exhaled gas flows back to the main inhalation pipe to cause CO when a double-pipe ventilation exhalation phase is avoided₂The harm of repeated inhalation.

E. Because the first one-way valve is added to the main inspiration pipe, the first one-way valve is connected with the air resistance passage in parallel, and the condition that the patient does not have an expiration passage when a single fault occurs (the expiration valve is blocked) is prevented. When the exhalation valve is blocked, the patient's exhaled air can be vented to atmosphere through the air lock passage 38.

The main inspiration pipe 36 and the main expiration pipe 318 are respectively provided with a gas detection module 9 for detecting gas conditions, the output end of the gas detection module 9 is connected to the input end of the system control module 8, and the gas detection module 9 is arranged on the main host bracket 1 below the breathing module 2.

The gas detection module 9 includes a first pressure detection mechanism 911 and an exhalation detection mechanism 92. The first pressure detection means 911 is provided in the main intake pipe 36, and detects the gas pressure in the main intake pipe 36. The exhalation detection mechanism 92 is disposed on the exhalation main tube 318 for detecting the gas flow and pressure on the exhalation main tube 318.

The first pressure detection mechanism 911 comprises a first connecting branch pipe 911 connected and arranged on the side portion of the main suction pipe 36, a sixth filter 914, a first electromagnetic valve 912 and a first pressure sensor 913 are sequentially arranged on the first connecting branch pipe 911, the sixth filter 914 is used for filtering gas to be detected, the first electromagnetic valve 912 is used for controlling the on-off of the first connecting branch pipe 911, and the first pressure sensor 913 is used for detecting the gas pressure in the first connecting branch pipe 911.

The exhalation detection mechanism 92 includes a third flow sensor 921 provided on the exhalation main pipe 318, and an exhalation pressure detection unit provided on the exhalation main pipe 318 in parallel with the third flow sensor 921.

The expiratory pressure detection unit comprises an expiratory branch pipe 922 which is connected with the third flow sensor 921 in parallel and arranged on the expiratory main pipe 318, and a fifth filter 923, a second electromagnetic valve 925, a third pressure sensor 927, a fourth pressure sensor 928, a third electromagnetic valve 926 and a seventh filter 924 are sequentially arranged on the expiratory branch pipe 922. The fifth filter 923 and the seventh filter 924 are used for filtering the gas exhaled by the patient. The third pressure sensor 927 and the fourth pressure sensor 928 are used to detect the air pressure in the main exhalation pipe 318.

The oxygen mixing device 4 of the present invention, as shown in fig. 8 to 11, includes an oxygen mixing module main frame 41 and a system control module, wherein the oxygen mixing module main frame 41 is provided with an oxygen inlet 43, an air inlet 44 and a mixed gas outlet 410, and the oxygen inlet 43 and the air inlet 44 are respectively provided with a valve.

The oxygen mixing module main frame 41 is internally provided with an oxygen mixing cavity 49 communicated with the mixed gas outlet 410. The oxygen mixing module main frame 41 is internally provided with an oxygen mixing module rear baffle 491, the end part of the oxygen mixing module main frame 41 is provided with an oxygen mixing module front baffle 492, and the oxygen mixing cavity 49 is formed by enclosing the oxygen mixing module rear baffle 491, the oxygen mixing module front baffle 492 and the inner wall of the oxygen mixing module main frame 41.

The oxygen inlet 43 is provided at the top end of the oxygen mixing module main frame 41, and the air inlet 44 is provided on the oxygen mixing module rear baffle 491.

An oxygen conveying cavity 45 communicated with the oxygen inlet 43 is formed in the top wall of the oxygen mixing module main frame 41, and oxygen can be conveyed into the oxygen conveying cavity 45; an air conveying cavity 46 communicated with the air inlet 44 is formed in the bottom wall of the oxygen mixing module main frame 41, and air can be conveyed into the air conveying cavity 46.

The air inlet 44 is provided with an air inlet turbo pressurizing valve 47 and an air pump, the mixed air outlet 410 is provided with an air outlet turbo pressurizing valve 48 with the same structure as the air inlet turbo pressurizing valve 47, and the controlled ends of the air inlet turbo pressurizing valve 47 and the air outlet turbo pressurizing valve 48 are respectively connected to the output end of the system control module.

The intake turbo pressure valve 47 includes a turbo pressure valve end cover 471, a turbo fan 472, and a turbo pressure valve main frame 473, the turbo pressure valve end covers 471 are respectively provided on both sides of the turbo pressure valve main frame 473, and the turbo fan 472 is provided inside the turbo pressure valve main frame 473.

The oxygen inlet 43 is provided with an oxygen flow sensor and a proportional valve, the oxygen flow sensor is used for detecting the oxygen flow at the oxygen inlet, the proportional valve is used for controlling the input oxygen flow, the output end of the oxygen flow sensor is connected to the input end of the system control module, and the controlled end of the proportional valve is connected to the output end of the system control module.

The mixture outlet 410 is provided with a total flow sensor for detecting the total flow of the mixture at the mixture outlet 410, and the output end of the total flow sensor is connected to the input end of the system control module.

The inside of the oxygen mixing cavity 49 is communicated with a spiral oxygen mixing heating module 42, and the controlled end of the spiral oxygen mixing heating module 42 is connected with the output end of the system control module. The spiral oxygen mixing and heating module 42 is respectively communicated with the oxygen inlet 43 and the air inlet 44 and is used for mixing the introduced oxygen and the introduced air in a spiral gas mixing mode and heating the introduced oxygen and the introduced air.

The spiral oxygen mixing and heating module 42 comprises an outer oxygen mixing and heating rod sleeve 422, an oxygen mixing and heating rod 421, a spiral oxygen pipeline 423 and a spiral air pipeline 424.

The outer sleeve 422 of the oxygen mixing and heating rod is connected and arranged between the top wall and the bottom wall of the main frame 41 of the oxygen mixing module, and the outer side wall of the outer sleeve 422 of the oxygen mixing and heating rod is provided with an exhaust hole communicated with the oxygen mixing cavity 49, so that the mixed oxygen and air can enter the oxygen mixing cavity 49 through the exhaust hole.

The oxygen mixing heating rod 421 is arranged inside the outer sleeve 422 of the oxygen mixing heating rod, and the controlled end of the oxygen mixing heating rod 421 is connected to the output end of the system control module. The top wall and the bottom wall of the oxygen mixing module main frame 41 are respectively provided with a hole groove, and the oxygen mixing heating rod 421 is arranged in the hole grooves.

A spiral oxygen pipeline 423 communicated with the oxygen conveying cavity 45 and a spiral air pipeline 424 communicated with the air conveying cavity 46 are sequentially and spirally wound outside the oxygen mixing heating rod 421. Specifically, the outer side wall of the oxygen mixing heating rod 421 is sequentially provided with a first spiral groove and a second spiral groove. The first spiral groove is used for embedding the spiral oxygen pipeline 423, and the second spiral groove is used for embedding the spiral air pipeline 424.

Oblique through holes 425 are respectively formed in the side walls of the spiral oxygen pipeline 423 and the spiral air pipeline 424, air and oxygen respectively penetrate through the oblique through holes in the pipelines to collide, air mixing efficiency is improved, and comfortable air is provided.

In order to ensure that the ejected mixed gas has a certain humidity, the oxygen mixing chamber 49 of the present invention is further provided with an air humidification film inside, and the mixed gas can pass through the air humidification film and then be discharged from the mixed gas outlet 410.

In order to ensure that the whole device has a heat preservation function and the temperature of the heated mixed gas is kept in a certain range to provide air with comfortable temperature for a patient, the heating plate is arranged on the outer wall of the oxygen mixing module main frame 41, the heat preservation is carried out on the interior of the oxygen mixing module main frame 41 through the heating plate, the controlled end of the heating plate is connected to the output end of the heat preservation controller, the heat preservation controller is provided with a bus interface, and the heat preservation controller is in interactive connection with the system control module.

When the oxygen mixing device 4 is assembled, two turbine fans are respectively assembled on positioning columns at two sides of a main frame of the turbine pressurizing valve, two end covers of the turbine pressurizing valve are respectively assembled at two sides of the main frame of the turbine pressurizing valve, the two installed turbine pressurizing valves are respectively assembled at an air inlet 44 and a gas mixing outlet 410, a spiral oxygen pipeline 423 and a spiral air pipeline 424 are respectively wound in a reserved groove of an oxygen mixing heating rod 421, the oxygen mixing heating rod 421 is inserted into a hole groove reserved in the oxygen mixing heating rod, the outer sleeve 422 of the oxygen mixing heating rod is sleeved outside the oxygen mixing heating rod 421, the assembled oxygen mixing heating rod 421 is installed in a cavity at the rear part of the oxygen mixing module main frame 41, the spiral oxygen pipeline 423 is connected to the upper side of the oxygen mixing module main frame 41, the spiral air pipeline 424 is connected to the lower side of the oxygen mixing module main frame 41, and the oxygen mixing module rear baffle 491 is assembled at the rear part of the oxygen mixing module main frame 41.

The upstream of the air inlet 44 of the present invention is the external environment, when the oxygen mixing device 4 of the present invention works, according to the set oxygen concentration value, the proportional valve and the oxygen flow sensor output oxygen with a certain flow rate through feedback control, the oxygen enters the oxygen conveying cavity 45 through the proportional valve, then the oxygen enters the spiral oxygen pipeline 423 and is discharged into the outer sleeve 422 of the oxygen mixing heating rod from the inclined through hole of the spiral oxygen pipeline 423. At the same time, air is pumped from the air inlet 44 into the air delivery chamber 46, then into the helical air conduit 424, and out of the angled through-holes of the helical air conduit 424 into the oxygen mixing heating rod outer sleeve 422. Air and oxygen respectively penetrate through the inclined through holes in the pipeline to collide, so that the air mixing efficiency is improved, and comfortable air is provided.

In the process of conveying and mixing the air and the oxygen, the oxygen mixing heating rod 421 heats the air and the oxygen, so that the mixed gas has a certain temperature, and the mixed gas is discharged into the oxygen mixing cavity 49 from the outer sleeve 422 of the oxygen mixing heating rod.

The turbine at the downstream of the mixed gas outlet can suck oxygen in the mixing device and a part of air entering the mixing device from the air inlet, uniformly mix the oxygen and the air, and send the mixture to the downstream, and meanwhile, the total flow rate is monitored by the total flow sensor, the total flow sensor feeds back detection information to the system control module, and the current oxygen concentration is calculated by the system control module.

In addition, the interior of the oxygen mixing device can be arranged to be a labyrinth structure, a section of containing cavity with a labyrinth structure stroke is arranged between the oxygen inlet and the air inlet, the labyrinth structure can temporarily store oxygen, and the breathing module can output gas with 100% oxygen concentration.

When the oxygen concentration of 100% needs to be controlled, the gas extracted by the turbine must be completely oxygen output by the proportional valve, but due to the control delay and the error of the flow sensor, the gas flow rate a extracted by the turbine cannot be guaranteed to be the same as the gas flow rate b delivered by the proportional valve, and the gas flow rate a always floats up and down on the gas flow rate b with the continuous feedback control. When the flow rate b of the gas delivered by the proportional valve is greater than the flow rate a1 of the gas extracted by the turbine, the excess gas flows towards the air inlet, because the labyrinth structure cavity is formed between the oxygen inlet and the air inlet, oxygen cannot be immediately discharged from the air inlet, when the total flow sensor detects that the flow rate a1 of gas extracted by the turbine is smaller than the flow rate b of gas controlled by the proportional valve, the flow rate a1 extracted by the turbine is increased, the flow rate extracted by the turbine is increased from a1 to a2, the flow rate a2 extracted by the turbine is larger than the flow rate b provided by the proportional valve, the gas in the labyrinth structure in the oxygen mixing device is extracted into the turbine, since the gas in the labyrinth structure is the oxygen which is just discharged from the oxygen inlet, it can be ensured that although the turbine extracts the gas in the oxygen mixing device, but is still 100% pure oxygen, thereby ensuring the accuracy of the control of the 100% oxygen concentration.

The turbine 35 of the present invention is disposed inside the main frame 1 of the main unit through the turbine fixing device 5. The turbine fixing device 5, as shown in fig. 12, includes a turbine support disposed outside the turbine 35, a first through hole for allowing the motor, the wire, and the terminal of the turbine 35 to pass through is disposed at the bottom end of the turbine support, a second through hole communicated with the air inlet of the turbine 35 is disposed at the top end of the turbine support, and a notch communicated with the air outlet of the turbine 35 is disposed at the side of the turbine support.

The turbine support comprises a turbine base support 56 and a turbine top support 58 which are detachably connected, a first through hole is formed in the turbine base support 56, and a second through hole is formed in the turbine top support 58.

Be provided with the first buffer assembly that is used for playing the cushioning effect between the casing bottom of turbine support's inner wall bottom and turbine 35, be provided with the second buffer assembly that is used for playing the cushioning effect between the casing top of the inner wall top of turbine support and turbine 35.

The first damping assembly includes a turbine damping pad 55, and the bottom end of the turbine damping pad 55 is fixed to the top end of the turbine base bracket 56 and the top end is fixed to the bottom end of the casing of the turbine 35. The turbine vibration damping pad 55 has a hollow structure inside. The turbine vibration damping pad 55 is provided with a third through hole, and the motor, the wire and the terminal of the turbine 35 can penetrate through the third through hole.

The top end face of the turbine vibration damping pad 55 is provided with a first clamping groove, and the bottom end face of the shell of the turbine 35 is provided with a plurality of first clamping bulges matched with the first clamping groove.

A plurality of first reverse buckling structures are integrally arranged at the bottom end of the turbine vibration damping pad 55, and a plurality of first clamping holes matched with the first reverse buckling structures are formed in the turbine base support 56.

First back-off structure sets up respectively in the bottom in first joint groove, and the pinhole has been seted up to structural correspondence respectively of first joint groove, first joint arch and first back-off, fixes through the turbine fixing pin 53 that passes the pinhole between the casing of turbine base support 56, turbine damping pad 55, turbine 35.

The second cushion assembly includes a silicone pad secured to the bottom end of the turbine top support 58 and the top end of the housing of the turbine 35. The inside of silica gel pad sets up to hollow structure.

A second clamping groove is formed in the bottom end face of the silica gel pad, and a plurality of second clamping protrusions matched with the second clamping groove are arranged on the top end face of the shell of the turbine 35.

A plurality of second back-off structures are integrally arranged at the top end of the silica gel pad, and a plurality of second clamping holes matched with the second back-off structures are formed in the turbine top support 58.

The second back-off structure sets up respectively on the top in second joint groove, and the pinhole has been seted up to second joint groove and the structural correspondence respectively of second back-off, fixes through the second turbine fixing pin that passes the pinhole between turbine top support 58, silica gel pad, the casing of turbine 35.

The silicone pad is integrally connected with a turbine inlet silicone tube 57 which penetrates through the second through hole and is communicated with the air inlet of the turbine 35.

An air inlet of the turbine 35 is fixedly provided with a turbine inverted buckle ring 52, and the turbine 35 and the turbine inverted buckle ring 52 are fixed through gluing. The turbine inlet silicone tube 57 is interference fitted over the turbine retaining ring 52.

The breathing module turbine fixing device further comprises a turbine outlet silicone tube 54, and the turbine outlet silicone tube 54 is in interference fit with the air outlet of the turbine 35 and extends out of the notch of the turbine support.

The left side of the turbine base support 56 is bent upwards to form a clamping seat, and the left side of the turbine top support 58 is provided with an opening. The clamping groove is formed in the turbine outlet silicone tube 54 and matched with the clamping seat to restrain circumferential and front-back movement of the turbine outlet silicone tube 54.

When the turbine outlet silica gel pipe 54 is assembled, the turbine 35 and the turbine inverted buckle ring 52 are fixed through gluing, a thread is tapped at one end of the turbine fixing pin 53, the turbine fixing pin 53 is screwed into a corresponding pin hole of the turbine 35 through the thread, the turbine outlet silica gel 54 pipe is inserted into an outlet of the turbine 35, the turbine outlet silica gel 54 is made of silica gel, the silica gel is soft and elastic, the turbine outlet silica gel pipe 54 is in interference fit with the outlet of the turbine 35, and the outlet of the turbine 35 and the turbine outlet silica gel pipe 54 are sealed through interference in the radial direction.

The turbine vibration damping pad 55 is sleeved in the

turbine base support

56, 53 reversing structures are arranged on the turbine vibration damping pad 55, the turbine vibration damping pad is made of silica gel, the 53 reversing structures of the turbine vibration damping pad 55 can be clamped into corresponding holes of the turbine base support 56, and the turbine vibration damping pad 55 is fixed on the turbine base support 56 through the reversing structures of the turbine vibration damping pad 55.

The turbine 35 is inserted into the turbine vibration damping pad 55, and the motor, the wire, and the terminal of the turbine 35 pass through the turbine vibration damping pad 55 and the first through hole of the turbine base bracket 56. During assembly, turbine fixing pins 53 mounted on the turbine 35 are inserted into corresponding holes of the turbine damping pads 55 and the turbine base bracket 56.

The turbine outlet silicone tube 54 is provided with a clamping groove, the clamping groove of the turbine outlet silicone tube 54 arranged on the turbine 35 is clamped into the clamping seat of the turbine base support 56, and the circumferential and front-back movement of the turbine outlet silicone tube 54 is restrained through the matching of the clamping groove and the clamping seat.

In emboliaing turbine top support 58 with turbine entry silicone tube 57, there are 52 back-off structures on the top of the silica gel pad of turbine entry silicone tube 57 body coupling, and the material of turbine entry silicone tube 57 is silica gel, and 52 back-off structures of silica gel pad can be blocked in the pinhole that turbine top support 58 corresponds, through the back-off structure of silica gel pad, fix silica gel pad and turbine entry silicone tube 57 on turbine top support 58.

The turbine inlet silicone tube 57 is sleeved on the turbine 35, the turbine inlet silicone tube 57 and the turbine inverted buckle ring 52 which is fixed on the turbine 35 through gluing are in interference fit, and sealing between the turbine inlet silicone tube 57 and the inlet of the turbine 35 is achieved through interference deformation of the turbine inlet silicone tube 57 in the diameter direction. During assembly, the screw holes of the turbine top bracket 58 are aligned with the screws of the turbine base bracket 56, and locked and fastened by the fastening screws 59.

The turbine 35 is clamped up and down by the turbine inlet silicone tube 57 and the turbine damping pad 55 to restrain the up and down movement of the turbine 35, and the turbine fixing pin 53 fixed on the turbine 35 is inserted into the corresponding holes of the turbine damping pad 55 and the turbine base bracket 56 to restrain the front, back, left and right movement and rotation movement of the turbine 35.

The turbine damping pad 55 is of a hollow structure, the bottom of the turbine damping pad 55 is supported through rib positions, and the rib positions are hollow, so that the turbine damping pad 55 can deform after being stressed, vibration energy is consumed, and vibration damping between the turbine 35 and the turbine base support 56 and between the turbine top support 58 is realized. Meanwhile, an inverted buckling structure of a turbine damping pad 55 is arranged between the turbine fixing pin 53 and the turbine base support 56, so that the damping effect of the turbine fixing pin 53 and the turbine base support 56 in the horizontal direction is realized.

In the field transportation process, the condition that the rotational speed of the turbine is controlled unstably due to the bumping of the breathing module further causes the instability of the flow rate or pressure of mechanical ventilation, so that the comfort of the patient using the mechanical ventilation can be reduced, and even the treatment effect of the mechanical ventilation on the patient can be reduced. Generally, the turbine of the breathing module is flexibly connected with the housing of the breathing module, and external disturbance is isolated from the turbine by a mechanical device, but the capacity of suppressing the disturbance is limited. In ventilation control, a flow rate or pressure control loop is arranged on the outer layer of the turbine rotating speed loop, the influence of unstable turbine rotating speed on ventilation control can be reduced through feedback control of the outer layer loop, but the influence of disturbance on ventilation cannot be timely counteracted due to time delay of sampling of flow rate or pressure signals.

In order to solve the technical problem, the turbine 35 in the present invention is a variable speed turbine that adjusts output gas flow and pressure parameters in a variable speed manner, so as to solve the problems of unstable rotation speed control and unstable flow rate and pressure control caused by the bumping of the breathing module, so as to suppress the influence of the bumping of the breathing module on the ventilation of the breathing module.

Referring to fig. 13 and 14, the method of the present invention for controlling the turbine speed change includes: an accelerometer is arranged in the breathing module, disturbance signals influencing the control of the turbine operation parameters from the outside are obtained through the accelerometer, the turbine rotating speed control input is compensated according to the disturbance signals, and the influence of the disturbance on the turbine rotating speed control is reduced. The turbine operating parameter includes turbine speed, flow rate, or pressure.

The method specifically comprises the following steps:

and S1, acquiring a rotation speed control model of the turbine according to motor parameters provided by a turbine manufacturer or by adopting a system identification method.

And S2, mounting an accelerometer inside the respiration module.

After the accelerometer is installed inside the breathing module, the turbine operates at a constant speed, the breathing module is used in a simulated field environment, signals reflecting the vibration degree of the breathing module body are extracted from the acceleration signals, and meanwhile, the rotating speed signals of the turbine are recorded.

And S3, establishing a disturbance channel model from the vibration signal to the turbine speed signal by adopting system identification.

And S4, designing a controller for actively reducing the disturbance influence according to the frequency domain characteristics of the vibration signal, wherein the controller comprises a main controller and a compensation controller.

Before the controller is designed, a rotation speed control model and a disturbance channel model of the turbine are obtained. In the design process of the main controller for controlling the rotating speed, on the premise of ensuring the quick response of the system, the main controller can play a role in isolating the disturbance signal according to the frequency band of the vibration signal.

Meanwhile, a compensation controller compensated according to the disturbance can be designed according to the disturbance channel model.

The main controller and the compensation controller are designed pertinently according to vibration signals or disturbance channel models, and the influence of vibration on the rotating speed of the turbine can be greatly reduced.

And S5, extracting a method for reflecting vibration strength from the acceleration signal, and acquiring a one-dimensional vibration strength signal.

In step S5, a neural network may be used to input acceleration signals in three directions, i.e., the X axis, the Y axis, and the Z axis, to the learning model, so as to obtain a one-dimensional vibration intensity signal. The vibration signal calculation method is not limited to the neural network, and can also convert the three-dimensional signal into a one-dimensional signal in other modes, and the modulus of the synthetic vector of the acceleration in three directions can be simply adopted.

S6 and S1-S5 are all off-line designs, and when the breathing module operates on line, signals which are extracted from the acceleration signals and reflect the vibration strength are input to the compensation controller for compensation.

According to the invention, the accelerometer is arranged in the breathing module, the vibration signal is extracted, and the controller for actively reducing disturbance influence is designed according to the frequency domain characteristic of the vibration signal, so that the stable control of the rotating speed of the turbine can be ensured, and further the stable control of the flow speed or pressure signal of the turbine can be ensured, and the breathing module can obtain good ventilation treatment effect even in a field environment.

The breathing module 2 of the invention is in communication with a gas delivery manifold 322 via a breathing gas interface module 21. The breathing module 2 comprises a breathing air inlet module 22 and a breathing air outlet module 23 which are respectively communicated with the air transmission manifold 322.

The respiration intake module 22, as shown in fig. 15, includes an intake port mounted on the main frame of the main machine through a left fixing frame 227, and the intake port includes an intake port body 221. The right end of the air suction port body is an air inlet, and is arranged on the main bracket of the main machine through a right fixed bracket 2212 and communicated with an air inlet system of the mechanical ventilation module 3; the left end of the air inlet body 221 is an air outlet for supplying air to a patient, and the left end of the air inlet body 221 extends out of the left fixing bracket.

An autonomous inspiration hole is further formed in the side wall of the inspiration port body, and an autonomous inspiration valve which enables an inspiration port at the left end of the inspiration port body to be communicated with the outside when a breathing module fails is assembled in the autonomous inspiration hole.

The autonomous suction valve comprises an autonomous suction valve seat 223, an autonomous suction check valve 224 and an autonomous suction check valve seat, the autonomous suction valve seat 223 is assembled on the autonomous suction hole, and the autonomous suction valve seat 223 is of a cylindrical structure with two open ends. The inner end of the self-air suction valve seat 223 is communicated with the air suction body through a self-air suction hole, the self-air suction check valve 224 is arranged in the cylinder of the self-air suction valve seat 223, the self-air suction check valve seat 226 is assembled at the outer end of the self-air suction valve seat 223, and a plurality of vent holes are formed in the self-air suction check valve seat 226. The self-inspiration check valve seat 226 is matched with the self-inspiration check valve 224 to realize the opening and closing of the self-inspiration passage.

The self-suction one-way valve seat 226 is in threaded connection with the inner side end face of the outer end of the self-suction valve seat 223, and a plug sealing ring 225 is embedded between the annular joint of the self-suction one-way valve seat 226 and the self-suction valve seat 223; an autonomous suction valve sealing ring 222 is arranged between the annular seam formed by assembling the autonomous suction valve seat 223 and the autonomous suction hole. By arranging the plug sealing ring 225 and the self-suction valve sealing ring 222, the sealing of the suction port in a normal working state can be realized, and the problem of air leakage is avoided.

In the invention, the autonomous air suction one-way valve 224 is of an umbrella-shaped structure and is made of rubber; the umbrella skirt of the self-inspiration one-way valve clings to the surface of the self-inspiration one-way valve seat 226 and completely covers all the air vents, the umbrella handle of the self-inspiration one-way valve 224 is provided with an annular barb, and the umbrella handle of the self-inspiration one-way valve 224 is assembled with the central air vent of the self-inspiration one-way valve seat 226 to realize the positioning of the self-inspiration one-way valve 224. During the assembly process, the umbrella stem barb structure of the self-suction one-way valve 224 is inserted into the central vent hole of the self-suction one-way valve seat 226, the barb structure applies a reverse force to the self-suction one-way valve 224, and when the surface pressure of the umbrella skirt towards the suction port body is greater than or equal to the surface pressure towards the self-suction one-way valve seat 226, the umbrella skirt of the self-suction one-way valve 224 clings to the surface of the self-suction one-way valve seat 226 to realize sealing; when the surface pressure of the skirt towards the air inlet body is smaller than the surface pressure towards the self-suction one-way valve seat 226, the skirt deforms from the self-suction one-way valve seat 226 towards the air inlet body, the self-suction one-way valve 224 is opened, and the air in the external environment enters the valve body through the vent hole in the self-suction one-way valve seat 226.

In order to ensure the reliable and firm installation of the autonomous air suction valve, the outer wall of the autonomous air suction valve seat 223 is provided with an annular groove, and correspondingly, one side of the left fixed bracket 227 facing the autonomous air suction hole is provided with an arc-shaped fixture block; when the air suction valve is installed, the arc-shaped clamping block is clamped in the annular groove, so that the positioning of the automatic air suction valve seat and the air suction port body is realized; meanwhile, the left side and the right side of the outer wall of the self-air suction valve seat 223 are symmetrically provided with a pair of positioning columns with internal threads, and the internal threads of the positioning columns are assembled with fastening screws 2213 for pressing the arc-shaped clamping block on the outer wall of the air suction port body.

In order to prevent the gas exhaled by the patient from reversely entering the oxygen duct, the air inlet and the breathing module, the invention is provided with the matched reverse expiratory check valve 228 and a reverse expiratory check valve seat 2210 in the air outlet at the right end of the air inlet body. An annular sealing groove is formed in the outer circumference of the exhalation reversal one-way valve seat 2210, an exhalation reversal one-way valve sealing ring 229 is embedded in the annular sealing groove, and the exhalation reversal one-way valve sealing ring 229 is tightly attached to the inner wall of the air suction port body to achieve sealing of the air outlet.

In order to accurately measure the oxygen delivery amount or the spontaneous respiration flow, a flow sensor 2211 is arranged between the air outlet at the right end of the air suction port body and a right fixed support 2212, the left end of the flow sensor 2211 is in threaded connection with an exhalation reverse one-way valve seat 2210, and the right end of the flow sensor 2211 is assembled with an oxygen delivery hole in the side wall of the box body. The left end and the right end of the bottom end face of the flow sensor are respectively provided with a positioning hole, the corresponding bottom end face of the air suction port body and the bottom end face of the right fixing support are coaxially provided with a positioning column with an internal thread, and the flow sensor, the air suction port body and the right fixing support are installed through fastening screws penetrating through the positioning holes and the positioning columns.

During assembly, the self-inspiration valve sealing ring 222 is firstly sleeved at the position corresponding to the self-inspiration valve seat 223, then the plug sealing ring 225 is sleeved on the self-inspiration one-way valve seat 226, and then the self-inspiration one-way valve 224 is arranged on the self-inspiration one-way valve seat 226; then the autonomous suction valve seat 223 is installed in the autonomous suction hole of the suction port body 221, then the arc-shaped fixture block of the left fixing bracket 227 is inserted into the corresponding annular groove of the autonomous suction valve seat 223, the fastening screw is tightened, the left fixing bracket 227 plays a role in fixedly connecting the autonomous suction valve seat 223 with the suction port 1, and the suction port fixing bracket 227 is tightened with the suction port 1 through the fastening screw.

The exhalation reversal one-way valve 228 is installed in the exhalation reversal one-way valve seat 2210, then the exhalation reversal one-way valve sealing ring 229 is installed in the annular sealing groove corresponding to the exhalation reversal one-way valve seat 2210, the exhalation reversal one-way valve seat 2210 is installed in the air outlet of the air inlet body, then the flow sensor 2211 is installed in the air outlet of the air inlet body, and the flow sensor is respectively connected with the right fixing support 2212 and the air inlet body through fastening screws.

When the self-inspiration check valve is used for normal ventilation, the umbrella skirt of the self-inspiration check valve 224 is tightly attached to the self-inspiration check valve seat 226, the umbrella skirt completely blocks the ventilation hole on the self-inspiration check valve seat 226, and the gas in the air inspiration body is not discharged from the ventilation hole of the self-inspiration check valve seat 226 and is conveyed to a patient through the expiration reverse check valve 228 and the flow sensor 2211. When the power supply is interrupted and the patient needs to independently inhale, the umbrella skirt of the self-inhaling one-way valve 224 deforms, the air vent of the self-inhaling one-way valve seat 226 covered by the self-inhaling one-way valve 224 is exposed, and the outside air flows into the air inlet body 221 from the air vent of the self-inhaling one-way valve seat 226 and then enters the patient from the air inlet body 221, so that the self-inhaling is realized.

The infusion device 6, as shown in fig. 16 to 18, includes an infusion rod assembly 61, a waterproof silicone assembly 62, and an infusion rod fixing assembly 63.

The infusion rod assembly 61 is used for hanging an infusion bag, and the infusion rod assembly 61 comprises an infusion rod 61b, a connecting rod and an infusion rod hook 61 a.

The transfusion rod 61b is arranged in a hollow cavity shape, and the transfusion rod 61b is a thin-wall stainless steel pipe. The connecting rod is transversely arranged at the top end of the transfusion rod 61 b.

The transfusion rod hook 61a is arranged on the connecting rod. The transfusion rod hook 61a is in an annular shape bent inwards, and the structure ensures that a hung transfusion bag is not easy to fall off.

The transfusion rod 61b and the connecting rod, and the connecting rod and the transfusion rod hook 61a are fixed together in a welding mode.

The infusion rod assembly 61 is made of stainless steel, so that the strength of the infusion rod assembly can be guaranteed, and the infusion rod assembly does not rust when used under severe external conditions for a long time.

The transfusion rod fixing assembly 63 is used for positioning the transfusion rod assembly 61 and the waterproof silica gel assembly 62 on the main machine rear shell 12.

The infusion rod fixing component 63 comprises an infusion rod fixing sleeve 63a used for embedding the infusion rod 61b and an infusion rod fixing nut 63b in threaded fit with the infusion rod fixing sleeve 63a, and the infusion rod fixing nut 63b is used for positioning the infusion rod component 61 on the main machine rear shell 12.

The infusion rod fixing sleeve 63a comprises a flange structure and a fixing sleeve integrally arranged with the flange structure. The outer side wall of the fixing sleeve is provided with an external thread matched with the transfusion rod fixing nut 63 b.

The waterproof silicone assembly 62 is used to prevent the liquid in the transfusion rod assembly 61 from flowing into the main machine rear shell 12. The waterproof silicone rubber assembly 62 includes a waterproof jacket 62b and an interface plug 62 a. The interface plug 62a and the waterproof jacket 62b are both of compressible silicone material.

The waterproof sleeve 62b is embedded on the side of the transfusion rod fixing component 63 in a sealing mode, wraps the bottom end of the transfusion rod component 61, and can effectively prevent liquid inside the transfusion rod component 61 from entering the main machine.

Annular groove has been seted up to fixed sleeve's lateral wall bottom, and waterproof cover 62 b's bottom an organic whole is provided with the cyclic annular board with the sealed assembly of annular groove, and then makes waterproof cover 62b sealed assembly on fixed sleeve, is difficult for droing. A sealed cavity structure with an open top end is formed between the infusion rod fixing sleeve 63a and the waterproof sleeve 62 b.

The interface plug 62a is hermetically pressed between the infusion rod fixing sleeve 63a and the main machine rear shell 12 and is used for preventing liquid from entering the main machine. When the threads of the infusion rod fixing sleeve 63a and the infusion rod fixing nut 63b are completely screwed, the interface plug 62a is compressed, the gap between the infusion rod fixing sleeve 63a and the host computer rear shell 12 is completely filled, and external liquid can be effectively prevented from entering the host computer through the host computer rear shell 12.

The interface plug 62a includes a first plug pad and a second plug pad bent downward in a groove shape. The top end of the side wall of the fixing sleeve is provided with an annular groove, the second plug pad is embedded in the annular groove and is tightly extruded on the main machine rear shell 12 by the infusion rod fixing sleeve 63a and the infusion rod fixing nut 63 b. The top end of the first plug pad is contacted with the bottom end of the flange structure of the infusion rod fixing sleeve 63 a.

The inside of transfusion rod 61b is provided with the auto-lock structure, and the auto-lock structure is used for fixing transfusion rod subassembly 61 locking position on transfusion rod fixed cover 63a to guarantee transfusion rod subassembly 61 stability. The self-locking structure comprises an elastic sheet 61c, a pressing column 61d, an unlocking column 61e and a locking groove.

The elastic sheet 61c is arranged inside the transfusion rod 61b and is in a U-shaped arrangement, one side of the elastic sheet 61c is a fixed end fixedly arranged on the inner side wall of the transfusion rod 61b, and the other side of the elastic sheet 61c is a movable end.

The movable end of the elastic sheet 61c is provided with a pressing column 61d and an unlocking column 61e which sequentially and movably penetrate through the transfusion rod 61b from top to bottom at intervals, two through holes are formed in the side wall of the transfusion rod 61b, and the pressing column 61d and the unlocking column 61e respectively penetrate through one through hole. The pressing post 61d and the unlocking post 61e are fixed to the spring piece 61c by welding.

The inner side wall of the fixed sleeve is provided with a locking groove matched with the unlocking column 61e, and the unlocking column 61e is clamped inside the locking groove.

When the infusion device 6 is assembled, the interface plug 62a is sleeved on the infusion rod fixing sleeve 63a and then penetrates through the circular hole on the main machine rear shell 12, then the infusion rod fixing nut 63b is connected to the infusion rod fixing sleeve 63a in a threaded mode, and the interface plug 62a is extruded, so that the interface plug 62a has a sealing and waterproof effect. Subsequently, the waterproof cover 62b is fitted into the annular groove of the infusion rod fixing cover 63 a.

When the infusion rod is not inserted, the plug (i.e., the second plug pad) on the interface plug 62a is pressed into the annular groove of the infusion rod fixing sleeve 63a, and due to the presence of the waterproof sleeve 62b, even if the interface plug 62a is not pressed into the annular groove of the infusion rod fixing sleeve 63a, the liquid entering the infusion rod fixing sleeve 63a can be effectively blocked.

When the infusion rod component 61 is inserted, the pressing column 61d is pressed, the elastic sheet 61c deforms under the action of force, the unlocking column 61e is driven to move, and the infusion rod 61b is vertically inserted into the sealed cavity structure; when the infusion rod 61b is inserted in place, the pressing column 61d is loosened, the unlocking column 61e returns to move outwards due to the elastic factor and slides into the locking groove of the infusion rod fixing sleeve 63a, and the locking and positioning of the infusion rod component 61 and the infusion rod fixing component 63 are realized. At the moment, the infusion rod assembly 61 cannot fall off due to movement in the vertical direction, and the structural stability of the infusion rod assembly is ensured.

The stretcher fixing device 7, as shown in fig. 19 to 21, includes a stretcher support frame 77, a stretcher rotation blocking plate 71, a rotating assembly, a locking assembly, and a stretcher adapter plate 714.

The stretcher support frame 77 is in contact with the side surface of the stretcher 76, and the stretcher support frame 77 is in contact with the top surface, the bottom surface, and one side surface of the stretcher 76. The stretcher support frame 77 comprises a long top plate, a long vertical plate, a short bottom plate and a short vertical plate which are integrally connected, the bottom end face of the long top plate of the stretcher support frame 77 is in contact with the top end face of the stretcher 76, the inner side face of the long vertical plate of the stretcher support frame 77 is in contact with the side face of the stretcher 76, and the top end face of the short vertical plate of the stretcher support frame 77 is in contact with the bottom end face of the stretcher 76.

The stretcher rotation baffle 71 is matched with the stretcher support frame 77 to clamp the stretcher 76, and the stretcher rotation baffle 71 is arranged on the stretcher support frame 77 through a rotating component.

The rotating component is used for driving the stretcher rotating baffle 71 to rotate so as to realize the rapid disassembly and assembly of the stretcher 76. The rotating assembly includes a stretcher shaft 75 and a rotating handle 78. Through holes are formed in the long vertical plate and the short vertical plate of the stretcher support frame 77, the stretcher rotating shaft 75 penetrates through the stretcher support frame 77 and is rotatably arranged on the stretcher support frame 77, and two ends of the stretcher rotating shaft 75 extend out of the stretcher support frame 77. The rotating handle 78 is fixed to one end of the stretcher rotating shaft 75 by screws. The stretcher rotation baffle 71 is fixed to the other end of the stretcher rotation shaft 75 by screws.

The inner side surface of the stretcher rotation baffle 71 is fixedly provided with a clamping friction plate 72 through screws, the clamping friction plate 72 is in contact with the stretcher 76, and the inner side surface of the clamping friction plate 72 is a friction surface which can increase the friction force between the inner side surface and the side wall of the stretcher 76.

A friction washer 74 and a silica gel washer 73 are also sleeved on the stretcher rotating shaft 75 between the stretcher rotating baffle 71 and the stretcher supporting frame 77. The friction washer 74 is in contact with the stretcher support frame 77. The silicone washer 73 is fixedly disposed between the friction washer 74 and the stretcher rotation flap 71.

The stretcher rotation baffle 71 is provided with a limit positioning pin 710 for limiting the rotation angle of the rotating assembly, and the inner side surface of the stretcher rotation baffle 71 is provided with a groove matched with the limit positioning pin 710.

A stretcher transfer plate 714 fixedly arranged on the main machine is connected and arranged above the stretcher supporting frame 77 through a locking component.

The locking component comprises an unlocking handle 79 arranged on the stretcher supporting frame 77, a plurality of unlocking handle clamping hooks 79a are arranged on the unlocking handle 79, and a stretcher transfer plate bayonet 714a matched with the unlocking handle clamping hooks 79a is arranged on the stretcher transfer plate 714.

Specifically, a sliding groove is formed in the top end of the stretcher support frame 77, the unlocking handle 79 is slidably fitted and arranged in the sliding groove, one end of the unlocking handle extends out of the stretcher support frame 77, a guide post 713 which is arranged in a tapered manner and enables the unlocking handle 79 to pass through is fixedly arranged on the top end face of the stretcher support frame 77, the unlocking handle hook 79a passes through the guide post 713, and a tapered shell matched with the guide post 713 is arranged on the stretcher transition plate 714. One end of the unlocking handle 79 is provided with a convex column positioned inside the guide column 713, and the convex column is sleeved with a compression spring 711, one end of the compression spring is in contact with the unlocking handle 79, and the other end of the compression spring is in contact with the inner wall of the guide column 713.

A groove is formed on the top end face of the top plate of the stretcher supporting frame 77, a stretcher supporting pad 712 is further arranged between the stretcher supporting frame 77 and the stretcher changeover plate 714, and the stretcher supporting pad 712 is embedded in the groove.

The assembly process of the stretcher securing device 7 of the present invention is as follows.

The clamping friction plate 72 and the stretcher rotation baffle 71 are fixed together by screws to form a clamping friction plate assembly. Then the rotating handle 78 is fixed with the stretcher rotating shaft 75 through screws and then inserted into the through hole of the stretcher supporting frame 77, the friction washer 74, the silica gel washer 73 and the clamping friction plate component are sequentially assembled on the other side of the stretcher rotating shaft 75, and finally the stretcher rotating baffle 71 and the stretcher rotating shaft 75 are fixed through screws.

The unlocking handle 79 is placed in the slide groove of the stretcher support frame 77, then the stretcher support pad 712 is attached to the surface of the stretcher support frame 77, and the guide post 713 and the stretcher support frame 77 are fixed by passing a screw through the through hole of the stretcher support frame 77.

In the practical use of the stretcher fixing device 7, the stretcher switching plate 714 is fixed in the host, when the host is put down, the inner taper hole of the upper taper shell of the stretcher switching plate 714 is attached to the outer taper surface of the guide column 713 under the action of the guide column 713, and simultaneously, under the action of gravity, the stretcher switching plate 714 drives the unlocking handle 79 to move in the falling process, and finally, the stretcher switching plate bayonet 714a and the unlocking handle hook 79a are mutually buckled to form a buckle structure, so that the stretcher switching plate 714 can be reliably fixed in the fixing device. When the host needs to be lifted from the fixing device, the handle of the unlocking handle 79 is pressed to drive the unlocking handle 79 to integrally translate, so that the unlocking handle hook 79a is separated from the stretcher adapter plate bayonet 714a, the fixing device is unlocked at the moment, and the host can be easily lifted.

The rotating handle 78, the stretcher rotating baffle 71 and the clamping friction plate 72 are linked under the action of the stretcher rotating shaft. When the rotating handle 78 is in the horizontal state, the clamping friction plate 72 and the stretcher rotating baffle 71 are in the vertical state, and at the same time, the clamping friction plate 72 tightly presses the stretcher 76 into the notch of the stretcher supporting frame 77, so that the fixing device and the stretcher are reliably connected.

When the fixing device needs to be taken down to separate the stretcher supporting frame 77 from the stretcher 76, the rotating handle 78 only needs to be rotated 790 degrees to be in a vertical state. When the rotating handle 78 rotates 790 degrees, the rotating handle 78 drives the stretcher rotating shaft 75, the stretcher rotating baffle 71 and the clamping friction plate 72 to rotate 790 degrees, and the stretcher 76 is not clamped by the stretcher rotating baffle 71 and the clamping friction plate 72 any more, and the stretcher 76 can be directly taken out.

The limiting positioning pin 710 is fixed on the stretcher supporting frame 77, and meanwhile, a groove matched with the limiting positioning pin 710 is processed on the inner surface of the stretcher rotating baffle plate 71, so that the limiting positioning pin 710 can limit the rotating angle of the rotating handle 78, the risk that the stretcher rotating baffle plate is stressed unevenly or the stretcher falls off due to the fact that the rotating amplitude of the stretcher rotating baffle plate 71 is not in place is avoided, and meanwhile, the time for installing and disassembling the fixing device is saved.

When the stretcher rotation baffle 71 and the stretcher rotation shaft 75 are fixed by screws, the silica gel washer 73 is compressed under the action of pressure, the rotation hand feeling of the rotation handle 78 can be increased at the moment, and meanwhile, the friction washer 74 is made of wear-resistant nylon materials, so that the reliability of the fixing device after long-term use is ensured.

The inside of the main frame 1 is also provided with a power module 10 for supplying power to the whole device, and the power module 10 is arranged at the rear of the main frame 1. The power module 10 includes a lithium ion battery 101 and a backup battery. The battery A and the battery B are arranged in the invention, and the battery A and the battery B can be switched for use.

The invention realizes power supply management through the MCU. The power module 10 is divided into the following module components:

a charging module: the method is characterized in that a BUCK topology is adopted, each battery is charged independently, the charging electrical performance is controlled by an MCU (microprogrammed control unit), trickle ISET1_ PWM charging is carried out firstly, then constant current ISET1_ PWM charging is carried out, and finally floating voltage VCHARGE _ PWM charging is carried out, and when the full-charge condition is reached, the MCU closes the charging; and realizing a dynamic power distribution function of the system by utilizing a power distribution function of the charging IC, and starting to limit the charging power when the power of the system reaches a limit threshold value, so as to preferentially ensure the power supply of the system.

A battery management module: the information of the battery state register is read through the I2C, the information is uploaded to an upper computer through a serial port, and once the battery is over-temperature, over-voltage and over-current abnormal, the MCU controls the charging module to stop charging and alarm.

The main/standby switching circuit: the main and standby switching circuits are divided into two paths: one circuit is a standby power supply circuit for supplying small current, VBUS _17V and output voltage of two batteries are switched through a common Schottky diode, and then a voltage-reducing output standby power supply 3V3_ STB is used for supplying power to an MCU and some control circuits; the other path is a main power circuit, two battery output voltages are firstly switched through an ideal diode with very small voltage drop by boosting VBUS _16.5V, VBUS _16.9V through a BOOST topology and converting the output VBUS _17V through DC _ IN, and the output bus voltage VBUS supplies power to a high-current load at the later stage. When the DC _ IN is on line, 17V is larger than 15V, and the DC _ IN supplies power; when the MCU detects that the DC _ OK is not on-line, the boosted 15V of the batteries A and B are regulated to 16.5V and 16.9V respectively to supply power to the rear stage, and the boosted voltage of the battery B is higher than that of the battery A, namely, the electric quantity of the battery B is preferentially used.

The low-power consumption management module: mainly to the power consumption management of standby battery, two batteries all increase a PMOS pipe to external the connecting, are controlled by BAT _ EN signal simultaneously, and MCU closes the PMOS when the power supply of battery is shut down, cuts off the battery and gives the power supply of back stage circuit, realizes giving power circuit zero-power consumption, and the singlechip gets into the dormancy state simultaneously, realizes the low-power consumption.

In order to improve the utilization rate of unit space and effectively reduce weight of a product, the invention adopts the following spatial arrangement structure:

assembling and fixing the turbine 35 to the middle part of the main bracket 1 of the main machine through screws, and limiting the turbine 35 by using two air pipe limiting metal plates 18; assembling and fixing the mechanical ventilation module 3 on the main frame 1 of the main machine through screws and connecting the mechanical ventilation module with the turbine 35 through an interface; the breathing gas interface module 21 is assembled and fixed on the side surface of the main frame 1 through screws, a pipeline is limited through screws by using a trachea limiting metal plate a14, and the breathing gas interface module 21 is connected with the mechanical ventilation module 3 through the first pipeline 17.

Assembling and fixing the gas detection module 9 on the main frame 1 of the main machine through screws; the breathing air suction port module 22 is fixed on the side surface of the main frame 1 of the main machine through screws; the first cushion 15 of the exhalation module is arranged on the side of the breathing air inlet module 22, the second cushion 16 of the exhalation module is arranged at the bottom of the breathing air inlet module 22, the breathing air inlet module 22 is connected with the turbine 35 through the second pipeline 19, the detection vent of the breathing air inlet module 22 is connected to the gas detection module 9 through a hose, the waste discharge port of the breathing air outlet module 23 is connected with the waste gas port through the third pipeline 20, and the detection vent of the breathing air outlet module 23 is connected to the gas detection module 9 through two hoses.

Assembling and fixing the power supply module 10 on the back of the main frame 1 of the host machine through screws, assembling and fixing the interface board 13 on the side surface of the main frame 1 of the host machine through screws, and assembling and fixing the system control module 8 on the top of the main frame 1 of the host machine through screws; the 2 battery interface boards 102 are respectively assembled and fixed on the back of the main frame 1 of the main machine by 2 screws, finally the 2 lithium ion batteries 101 are respectively inserted into the battery interface boards 102, and the main frame bottom plate 11 is assembled and fixed on the bottom of the main frame 1 of the main machine by the screws.

The on-site timely rescue is usually an outdoor environment, and the relevant electromagnetic standard immunity test grade of the outdoor environment is far higher than that of the common standard. The patient parameters of the life support system, which are derived from sensitive patient physiological signal analog quantities, are very susceptible to interference, so that the electromagnetic shielding effectiveness of the whole system is greatly challenged, and particularly, the display component is a weak point of electromagnetic shielding due to the process characteristics of the display component. Therefore, it is one of the problems that the skilled person needs to solve in the present stage that the electromagnetic shielding problem of the display module can be effectively solved.

In view of the above, the invention provides an EMC structure of a portable life support system adapted to a field environment, which comprises a casing for accommodating the life support system, wherein a circuit board is arranged in the casing, an inwardly recessed rectangular display screen hole is formed in the front casing of the casing, a display screen assembly is arranged on the display screen hole, the display screen assembly comprises a touch screen and a display screen which are sequentially arranged from outside to inside, bonded through a third adhesive layer and connected with the circuit board, a transparent glass substrate is arranged on the display screen hole, and a light-transmitting shielding net is bonded on the inner side surface of the transparent glass substrate through the first adhesive layer; the touch screen is arranged on the inner side face of the light-transmitting shielding net through the second adhesive layer, and the ITO coating used for shielding electromagnetic signals is arranged on the outer side face of the touch screen.

The invention also includes a body temperature sensor, an electrocardiograph sensor, and a blood oxygen sensor for a portable life support system adapted for use in an EMC environment. The body temperature sensor is used for measuring the temperature of a human body and converting the temperature into a usable output signal; the electrocardio sensor is used for collecting human heart signals; the blood oxygen probe sensor is used for measuring the oxygen concentration in human blood, namely the blood oxygen saturation.

The body temperature sensor comprises a body temperature probe sensor for measuring the body temperature of a human body, the signal output end of the body temperature probe sensor is connected with a signal transmission line for transmitting body temperature information, the other end of the signal transmission line is provided with a joint for connecting a life support system, and a magnetic ring for inhibiting the interference of a complex high-frequency signal of a field complex environment on the body temperature information transmitted on the signal transmission line is sleeved on the signal transmission line; the outside cladding of magnetic ring is used for preventing the damaged high-elastic rubber cover that moves on the signal transmission line of magnetic ring.

The electrocardio sensor comprises a plurality of disposable electrode patches which are used for being attached to the surface of the skin of a human body to collect electrocardiosignals, and the signal output ends of the electrode patches are connected with signal transmission lines for transmitting electrocardio information; the signal transmission line comprises a plurality of lead wires which are detachably connected with the electrode patches, the other ends of the lead wires are connected with a main cable through a junction box, the other end of the main cable is provided with a joint for connecting a life support system, and the main cable is sleeved with a magnetic ring for inhibiting interference of a complex high-frequency signal in a field complex environment on the electrocardio information transmitted on the signal transmission line; the outside cladding of magnetic ring is used for preventing the damaged high-elastic rubber cover that moves on main cable of magnetic ring.

The blood oxygen sensor comprises a blood oxygen probe sensor for measuring the oxygen concentration in human blood, wherein the signal output end of the blood oxygen probe sensor is connected with a signal transmission line for transmitting blood oxygen concentration information, and the other end of the signal transmission line is provided with a connector for connecting a life support system, wherein the signal transmission line is sleeved with a magnetic ring for inhibiting the interference of a complex high-frequency signal in a field complex environment on the blood oxygen concentration information transmitted on the signal transmission line; the outside cladding of magnetic ring is used for preventing the damaged high-elastic rubber cover that moves on signal transmission line of magnetic ring.

The invention also comprises an ultrasonic detector for measuring the heart rate and the pulse rate, the ultrasonic detector is connected with the system control module through the USB interface and can transmit the detected heart rate and pulse rate signals to the system control module, and the system control module compares the detection signals with the internal set value to judge the health state of the human body.

In use, prior to initiating infusion, the infusion device of the portable universal life support system typically requires a self-check of the closed door to ensure that the door structure used to accommodate the position of the infusion device is reliably closed. In contrast, the door closing detection device is arranged, and a non-contact detection mode that the permanent magnet is matched with the Hall sensor is adopted, so that the structural design is simplified, the reliability of the product is improved, and the service life of the product is prolonged.

The working principle of the invention is as follows.

Under the very critical condition in the field battlefield, medical personnel lift the patient to the stretcher to fix life support system host computer to the stretcher fast, high-efficiently through the stretcher fixing device, hang the infusion package to infusion set 6 on, carry out the infusion for the patient through infusion set 6.

Meanwhile, the breathing air inlet module 22 and the breathing air outlet module of the breathing module 2 are connected to a breathing mask, and the breathing mask is covered on the mouth of a patient.

The system control module 8 controls the operation of the turbine 35 and the oxygen mixing device 4 in the mechanical ventilation module 3.

When the turbine 35 is operating, ambient air is drawn into the module via the first filter 310 and the second filter 311, while high pressure oxygen (O)₂) After entering the module through the high pressure oxygen inlet, filtered through the fourth filter 315, the second pressure sensor 314, after sensing the pressure, is adjusted in flow rate by the proportional valve 323 (in cooperation with the second flow sensor 317) and is also sucked in by the turbine 35. And low pressure oxygen (O)₂) After entering the module through the low pressure oxygen inlet and the second one-way valve 312, it is also sucked in by the turbine 35. It should be noted that the hyperbaric oxygen and the hypoxic oxygen are not connected in a ventilating manner.

The sucked air and oxygen are mixed in the oxygen mixing device 4, the oxygen enters the oxygen conveying cavity 45 through the proportional valve, then the oxygen enters the spiral oxygen pipeline 423 and is discharged into the oxygen mixing heating rod outer sleeve 422 from the inclined through hole of the spiral oxygen pipeline 423. At the same time, air enters the air delivery cavity 46 from the air inlet 44 by the action of the air pump, and then enters the helical air duct 424, and is discharged into the oxygen mixing heating rod outer sleeve 422 from the inclined through hole of the helical air duct 424. Air and oxygen respectively penetrate through the inclined through holes in the pipeline to collide, so that the air mixing efficiency is improved, and comfortable air is provided.

The air and oxygen are sucked in, and then output downstream (by the first pressure sensor 913 or the first flow sensor 316) in the form of a desired pressure or flow rate through the variable speed operation of the turbine 35, and finally output to the outside of the module after passing through the first check valve 37.

The gas of output enters into breathing module 2, carries out the air feed for the patient through breathing induction port module 22, and the gas after mixing passes through induction port body 221 and enters into respirator promptly, and the patient can directly inhale oxygen.

In the above description, the operation principle of the air intake system is described, and for the exhaust system, the gas exhaled by the patient is exhausted from the breathing exhaust port die set 23 to the mechanical ventilation module 3, and then enters the mechanical ventilation module 3, because the first check valve 37 is provided on the main inhalation pipe 36 according to the present invention, the gas exhaled by the patient cannot enter the main inhalation pipe 36, but enters the main exhalation pipe 318, and the pressure and flow rate of the gas exhaled by the patient are controlled by the exhalation valve 320 (matching with the third flow sensor 921), and finally are exhausted out of the module through the third check valve 321.

When the patient inhales, the rotational speed of the turbine 35 is increased, so that the mixed gas can be very quickly supplemented to the patient; when the patient exhales, the rotational speed of the turbine 35 is reduced so that the patient's exhaled air can be discharged through the exhalation main tube 318. When the exhalation valve 320 is blocked, because the rotation speed of the turbine 35 is very low, the gas exhaled by the patient can enter the main inhalation pipe 36 through the air blocking passage 38, then sequentially pass through the oxygen mixing device 4 and the air conveying pipeline 31, and is filtered by the first filter 310 and the second filter 311 on the air conveying pipeline 31 and then is exhausted to the atmosphere.

Claims

1. The utility model provides a portable general life support system is used in open-air emergent treatment which characterized in that: comprises a life support system host which is quickly positioned on a stretcher (76) through a stretcher fixing device (7), wherein the life support system host comprises a host shell and a transfusion device (6) which is arranged above the host shell and has a waterproof sealing function; the inside of host computer shell is fixed and is provided with host computer main support (1), the inside location of host computer main support (1) is provided with and is used for providing mixed oxygen and can avoid taking place the mechanical ventilation module (3) of the unable exhaust condition of patient's expired gas and link to each other with mechanical ventilation module (3) and be used for breathing treatment and can guarantee patient's breathing module (2) of independently breathing, the inside of host computer main support (1) still is provided with and is used for carrying out power module (10) of supplying power for the device is whole, the top of host computer main support (1) is provided with system control module (8), the controlled end of mechanical ventilation module (3) is connected in the output of system control module (8).

2. The portable universal life support system for field emergency treatment according to claim 1, wherein: the mechanical ventilation module (3) comprises an air inlet system for providing air source for a patient, an exhaust system for exhausting gas exhaled by the patient into the atmosphere and an air delivery manifold (322) communicated and arranged between the air inlet system and the exhaust system and communicated with the breathing module (2).

3. A portable universal life support system for field emergency treatment according to claim 2, wherein: the air intake system comprises an air delivery system for delivering air to the environment, a low pressure oxygen delivery system for delivering low pressure oxygen, and a high pressure oxygen delivery system for delivering high pressure oxygen, the air delivery system, the low-pressure oxygen delivery system and the high-pressure oxygen delivery system are connected with an oxygen mixing device (4) in an intersecting manner, the air outlet end of the oxygen mixing device (4) is connected with an air suction main pipe (36) for providing an air source for a patient, a turbine (35) for pumping mixed gas in the oxygen mixing device (4) is arranged on the air suction main pipe (36), a first one-way valve (37) for preventing the gas exhaled by the exhaust system from entering the oxygen mixing device (4) is also arranged on the air suction main pipe (36), an air resistance passage (38) which is connected in parallel with the first one-way valve (37) is connected and arranged on the air suction main pipe (36) between the air inlet end of the first one-way valve and the air outlet end of the first one-way valve;

the exhaust system comprises an expiration main pipe (318) communicated with an air delivery main pipe (322), and an expiration valve (320) used for controlling the pressure and the flow rate of the gas exhaled by the patient and a third one-way valve (321) used for preventing the outside gas from entering the expiration main pipe (318) are sequentially arranged on the expiration main pipe (318).

4. A portable universal life support system for field emergency treatment according to claim 3, wherein: inhale and be provided with respectively on being responsible for (36) and exhale the person in charge (318) and be used for detecting gaseous state gaseous detection module (9), the output of gaseous detection module (9) is connected in the input of system control module (8), and gaseous detection module (9) set up on being located main frame (1) of host computer below breathing module (2).

5. A portable universal life support system for field emergency treatment according to claim 3, wherein: the turbine (35) is a variable speed turbine which adjusts output gas flow and pressure parameters in a variable speed manner.

6. A portable universal life support system for field emergency treatment according to claim 3 or 5, wherein: the turbine (35) is arranged inside the main frame (1) of the main machine through a turbine fixing device (5);

the turbine fixing device (5) comprises a turbine support arranged on the outer side of the turbine (35), a first through hole for enabling a motor, a wire and a terminal of the turbine (35) to penetrate through is formed in the bottom end of the turbine support, a second through hole communicated with an air inlet of the turbine (35) is formed in the top end of the turbine support, and a notch communicated with an air outlet of the turbine (35) is formed in the side portion of the turbine support; be provided with the first buffer assembly that is used for playing the cushioning effect between the casing bottom of inner wall bottom of turbine support and turbine (35), be provided with the second buffer assembly that is used for playing the cushioning effect between the casing top of the inner wall top of turbine support and turbine (35).

7. A portable universal life support system for field emergency treatment according to claim 3, wherein: the oxygen mixing device (4) comprises an oxygen mixing module main frame (41), an oxygen inlet (43), an air inlet (44) and a mixed gas outlet (410) are formed in the oxygen mixing module main frame (41), and valves are respectively arranged on the oxygen inlet (43) and the air inlet (44); the oxygen mixing module main frame (41) is internally provided with an oxygen mixing cavity (49) communicated with a mixed gas outlet (410), the oxygen mixing cavity (49) is internally communicated with a spiral oxygen mixing heating module (42) which is respectively communicated with an oxygen inlet (43) and an air inlet (44) and used for mixing and heating introduced oxygen and air in a spiral gas mixing mode, and the controlled end of the spiral oxygen mixing heating module (42) is connected to the output end of the system control module.

8. A portable universal life support system for field emergency treatment according to claim 2, wherein: the breathing module (2) is communicated with the gas transmission main pipe (322) through a breathing gas interface module (21); the breathing module (2) comprises a breathing air suction port module (22) and a breathing air exhaust port module (23) which are respectively communicated with the air transmission main pipe (322);

the breathing air suction port module (22) comprises an air suction port arranged on a main bracket of the main machine through a left fixed bracket (227), and the air suction port comprises an air suction port body (221); the right end of the air suction port body is an air inlet, and is arranged on a main bracket of the main machine through a right fixed bracket (2212) and communicated with an air inlet system of the mechanical ventilation module (3); the left end of the air suction port body (221) is an air outlet for supplying air to a patient, and the left end of the air suction port body (221) extends out of the left fixing support; an autonomous inspiration hole is further formed in the side wall of the inspiration port body, and an autonomous inspiration valve which enables an inspiration port at the left end of the inspiration port body to be communicated with the outside when a breathing module fails is assembled in the autonomous inspiration hole.

9. The portable universal life support system for field emergency treatment according to claim 1, wherein: the infusion device (6) comprises an infusion rod assembly (61) used for hanging an infusion bag, a waterproof silica gel assembly (62) used for preventing liquid in the infusion rod assembly (61) from flowing into the main machine shell, and an infusion rod fixing assembly (63) used for positioning the infusion rod assembly (61) and the waterproof silica gel assembly (62) on the main machine shell; the waterproof silica gel assembly (62) comprises a waterproof sleeve (62b) which is embedded on the side part of the infusion rod fixing assembly (63) in a sealing mode and wraps the bottom end of the infusion rod assembly (61).

10. The portable universal life support system for field emergency treatment according to claim 1, wherein: the stretcher fixing device (7) comprises a stretcher supporting frame (77) contacted with the side surface of the stretcher (76) and a stretcher rotating baffle plate (71) matched with the stretcher supporting frame (77) to clamp the stretcher (76), wherein the stretcher rotating baffle plate (71) is arranged on the stretcher supporting frame (77) through a rotating component which is used for driving the stretcher rotating baffle plate (71) to rotate so as to realize the quick assembly and disassembly of the stretcher (76); the upper part of the stretcher supporting frame (77) is provided with a stretcher adapter plate (714) fixedly arranged on the host machine through a locking component in a connecting way.