Respiratory rehabilitation auxiliary device for critical medicine patient

Abstract

The invention discloses a respiratory rehabilitation assisting device for a patient in critical medicine, and relates to the technical field of medical rehabilitation equipment, the device comprises a bed body frame, a mattress, a respiration monitoring assembly, a respiration assisting assembly, a medicine atomization mechanism and a control box, and all the parts form a complete respiratory rehabilitation assisting system through mechanical connection and circuit connection; the mattress is fixed to the upper portion of the bed body frame, sensors of the respiration monitoring assembly are embedded into the mattress and an airway connector of the respiration assisting assembly, and the respiration assisting assembly is fixed to the side portion of the bed body frame through a support and connected with an airway of a patient through a pipeline. The medicine atomization mechanism is installed at the end of the bed body frame through a fixing frame and communicates with the respiration assisting assembly through a conveying pipeline, and the control box is fixed to the side face of the bed body frame and connected with all electric components through wires. The breathing rehabilitation effect of critical patients is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical rehabilitation equipment, in particular to a respiratory rehabilitation auxiliary device for critical medical patients, which is especially suitable for the rehabilitation treatment of patients with impaired respiratory function in the intensive care unit. BACKGROUND

[0002] After experiencing severe diseases or surgery, critical medical patients often have impaired respiratory function, such as weakened respiratory muscle function and decreased pulmonary ventilation efficiency, and need systematic respiratory rehabilitation treatment to restore respiratory function. The respiratory rehabilitation equipment currently used in clinical practice has the problems of dispersed structure and poor coordination. Respiratory monitoring equipment, ventilation auxiliary devices, and drug atomizers are often independent devices that need to be operated and arranged separately, which not only occupies the space of the ward, but also makes it difficult to achieve precise coordination control between devices.

[0003] In the prior art, some integrated respiratory rehabilitation equipment adopts modular design, but there are defects in mechanical structure connection: the air path pipeline of the respiratory auxiliary assembly is arranged in disorder, which is easy to cause the pipeline to fall off due to patient activity; the connection between the drug atomization mechanism and the respiratory auxiliary device is not close, and the delivery efficiency of atomized drugs is low; the installation position of the monitoring sensor is unreasonable, resulting in inaccurate detection of respiratory parameters. These mechanical structure problems directly affect the effectiveness and safety of respiratory rehabilitation assistance. SUMMARY

[0004] The purpose of the present application is to overcome the above-mentioned problems in the prior art and provide a respiratory rehabilitation auxiliary device for critical medical patients. The device is optimized in design, clearly defines the connection relationship and position relationship of each component, improves the structural stability and coordination efficiency of the device,

[0005] The technical solution adopted by the present application to solve the technical problem is: a respiratory rehabilitation auxiliary device for critical medical patients, comprising a bed frame, a mattress, a respiratory monitoring assembly, a respiratory auxiliary assembly, a drug atomization mechanism, and a control box. Each component is connected by mechanical connection and electrical connection to form a complete respiratory rehabilitation auxiliary system.

[0006] The bed frame, as the basic support structure of the entire device, is welded from rectangular steel pipes, and the four corners at the bottom are fixedly installed with universal wheels with braking function, which facilitates the movement and fixation of the device.

[0007] The mattress adopts a three-layer composite structure design, the bottom layer is a hard sponge layer with a thickness of 10 cm, which plays a basic supporting role; the middle layer is a memory cotton layer with a thickness of 5 cm, which has good conformability and air permeability; the surface layer is a medical air-permeable fabric layer made of antibacterial non-woven fabric material, the overall size of the mattress matches the size of the tabletop of the bed frame, the bottom four corners of the mattress are fixedly connected with the upper tabletop of the bottom support frame through bolts, which prevents displacement during use, the mattress is provided with an internal interlayer at the position corresponding to the chest and abdomen of the patient, the interlayer is provided with a sensor installation space and a lead channel, and a lead outlet hole is formed in the side surface.

[0008] The breathing monitoring assembly is used for real-time acquisition of the breathing related parameters of the patient, including a chest and abdomen pressure sensor, an airflow sensor, an oxygen saturation sensor and a signal processing box, the chest and abdomen pressure sensor adopts a thin strain gauge type sensor, which is embeddedly installed in the internal interlayer at the chest and abdomen position of the mattress, the upper surface of the sensor is in close contact with the memory cotton layer, and the lower surface is fixed on the hard sponge layer through an adhesive, so as to ensure that the chest and abdomen pressure change during the patient's breathing can be accurately detected, the airflow sensor adopts a thermal gas flow sensor, which is fixedly installed at the end of the airway interface of the breathing auxiliary assembly through a threaded connection, the detection probe of the sensor extends into the airway interface, which is used for detecting the speed and flow parameters of the respiratory airflow, the oxygen saturation sensor adopts a finger clip type design, which is connected with the signal processing box through a 2-meter shielding lead, and is convenient for the patient to wear, the signal processing box adopts an aluminum alloy shell, which is fixedly installed in the middle position of the side beam of the bed frame through four screws, and is internally provided with a signal amplification circuit, a filter circuit and an A / D conversion module, the output signal lines of the sensors are connected with the input end of the signal processing box, and the output end of the signal processing box is connected with the control box through a shielding cable.

[0009] The breathing auxiliary assembly is used for providing breathing support for a patient, comprising an airway interface, a main gas path pipeline, an air inlet valve, an air outlet valve, a gas filter, a gas pressure pump and a pressure sensor, the airway interface is made of medical silica gel material, and a standard interface is arranged at an end portion for connecting a patient breathing mask or a tracheal cannula, the main gas path pipeline is made of medical grade PVC pipe with an inner diameter of 8 mm, the pipelines are connected in a sealed manner through threaded joints or quick plug joints to ensure no gas leakage, the air inlet valve and the air outlet valve are both electromagnetic proportional valves, and are fixedly installed on a side beam of a bed body frame through L-shaped metal supports, an input end of the air inlet valve is connected with the gas filter through a pipeline, and an output end is connected with the pressure sensor through a pipeline; an input end of the air outlet valve is connected with the pressure sensor through a pipeline, and an output end is connected with the airway interface through a pipeline, the gas filter adopts a cylindrical structure, is internally provided with a high-efficiency filter membrane, and is fixed on the upper side of the gas pressure pump through a support, is used for filtering and purifying the gas entering the gas path, the gas pressure pump is a medical oil-free air compressor, is fixedly installed on a damping mounting seat in the control box through bolts, an output end of the gas pressure pump is connected with an input end of the gas filter through a high-pressure hose, and the pressure sensor is a high-precision diffused silicon pressure sensor, is installed on the main gas path pipeline between the air inlet valve and the air outlet valve in a series connection manner through a three-way joint, and is used for monitoring the airway pressure in real time, and a metal corrugated pipe protective sleeve is arranged on the outer side of the main gas path pipeline, the protective sleeve is fixed on the side beam of the bed body frame through pipe clamps at intervals to prevent the pipeline from being accidentally damaged.

[0010] The drug atomization mechanism is used for atomizing and delivering therapeutic drugs to the respiratory tract of a patient, comprising a medicine box, an atomization generator, an atomization delivery pipe, a drug amount monitoring sensor and a temperature adjusting sleeve, the medicine box is made of a transparent acrylic material in a rectangular cuboid structure, has a volume of 500 ml, is installed on an end beam of a bed body frame through an L-shaped metal fixing support, is provided with a screw type sealing cover with a silica gel sealing ring on the top for conveniently adding liquid medicine, and is provided with a flow guide plate with an inclination angle of 15° on the bottom, the lowest part of the flow guide plate is provided with a liquid outlet connected with a liquid inlet of the atomization generator through a pipeline, the atomization generator is an ultrasonic atomizer, is installed on a fixing support below the medicine box, an output port of the atomization generator is connected with the atomization delivery pipe through a pipeline, the atomization delivery pipe is made of medical silica gel pipe with an inner diameter of 6 mm and has good flexibility, one end is connected with the output port of the atomization generator, and the other end is connected with the pipeline between the air outlet valve of the main gas path pipeline and the airway interface through a three-way joint with a one-way valve, the one-way valve ensures that the atomized gas can only flow to the airway interface, preventing the main gas path gas from flowing reversely into the atomization delivery pipe, the drug amount monitoring sensor is an ultrasonic liquid level sensor, is fixedly installed on a central mounting seat on the bottom of the medicine box through screw connection, a sensor probe is upwardly inserted into the inside of the medicine box for detecting the liquid level height of the liquid medicine, and the temperature adjusting sleeve comprises a heating wire and a heat preservation layer, the heating wire is made of a nichrome alloy wire and is spirally wound on the middle outer wall of the atomization delivery pipe, and is wrapped with a 5 mm thick silica gel heat preservation layer outside, for adjusting the temperature of the atomized medicine.

[0011] The control box, as the control core of the whole device, adopts a stainless steel shell and is fixed and installed on the side beam of the bed body frame by four bolts, and the position height is convenient for medical staff to operate, and the front panel of the control box is designed in an inclined manner with an angle of 30 degrees with the horizontal plane, and a 10.1-inch touch screen display screen is embedded in the upper part, and 12 waterproof and dustproof operation buttons, including a power button, an emergency stop button, a mode switching button and a parameter adjusting button, are arranged in a matrix manner below the display screen, and the inside of the control box is divided into a power supply area, a control area and a gas pump area by a partition plate, and the power supply area is provided with a switching power supply module for converting AC 220V into DC 24V and DC 5V; the control area is provided with a microprocessor, a data storage module, a relay module and a signal interface board, the microprocessor adopts an STM32 series high-performance single-chip microcomputer, and the data storage module adopts an SD card with a capacity of 16 GB; the gas pump area is provided with a gas pressure pump and a shock absorbing mounting seat, the side surface of the control box is provided with a louvered heat dissipation hole to ensure good heat dissipation of the internal devices, and the back surface is provided with a power supply interface, a network interface and a plurality of standby interfaces, and the microprocessor in the control box is connected with the signal processing box, the display screen, the operation button, the angle sensor, the drug amount monitoring sensor, the pressure sensor, the air inlet valve, the air outlet valve, the gas pressure pump, the back driving electric push rod, the leg driving electric push rod, the atomization generator and the heating wire of the temperature adjusting sleeve through wires to realize centralized control of the whole device.

[0012] The circuit connection between the components adopts a star topology structure, the microprocessor in the control box is taken as the center, the signal lines of all the sensors are connected to the signal processing box through shielded cables, and after processing, the signal lines are connected to the signal input end of the microprocessor through a main cable; all the execution components such as electric push rods, electromagnetic valves and gas pressure pumps are connected with the output end of the microprocessor through the relay module, and the working state of the execution components is controlled by the microprocessor, the power supply system adopts a centralized power supply mode, the switching power supply module in the control box provides the working voltage required by each component, and the power supply lines of each component are fixed in the inside of the side beam of the bed body frame through wire grooves or wire pipes to ensure that the wiring is neat and safe.

[0013] The present application has the following advantages: accurate and reliable respiratory monitoring: the chest and abdominal pressure sensor is embeddedly installed in the mattress, and can directly detect the chest and abdominal fluctuation change during breathing; the airflow sensor is installed at the end of the airway interface, and can accurately detect the respiratory airflow parameter; a plurality of sensors work cooperatively to comprehensively reflect the respiratory state of the patient.

[0014] The respiratory assistance is safe and effective: the airway pipeline adopts medical grade material and is provided with a metal corrugated pipe protective sleeve to reduce the damage risk; the closed loop control system composed of the air inlet valve, the air outlet valve and the pressure sensor can accurately adjust the airway pressure to avoid damage to the patient's lung caused by excessively high pressure.

[0015] High efficiency of drug aerosol delivery: the inclined baffle design of the drug tank reduces drug liquid residue; the temperature regulating sleeve can heat the aerosolized drug to an appropriate temperature; the one-way valve design prevents gas backflow, improving drug utilization rate.

[0016] Convenient operation and maintenance: the universal wheels at the bottom of the device facilitate movement and fixation; the modular mechanical design of each component facilitates disassembly, maintenance and replacement; the inclined panel and touch screen design of the control box are intuitive and easy to operate.

[0017] High safety: all components in contact with patients are made of medical-grade materials; the device has perfect alarm and safety protection functions to detect and handle abnormal situations in time, ensuring patient safety.

[0018] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the internal structure of the control box of the present application;

[0021] Figure 3 It is a schematic diagram of the gas path connection structure of the breathing assistance assembly of the present application;

[0022] Figure 4 It is a schematic diagram of the connection structure of the drug aerosolization mechanism and the breathing assistance assembly of the present application;

[0023] Figure 5 It is a schematic diagram of the connection structure of the breathing monitoring assembly and the mattress of the present application.

[0024] Markings in the figure: 1, bed body frame; 2, mattress; 3, control box; 4, universal wheel; 5, chest and abdominal pressure sensor; 6, air flow sensor; 7, blood oxygen saturation sensor; 8, signal processing box; 9, airway interface; 10, main gas path pipeline; 11, air inlet valve; 12, air outlet valve; 13, gas filter; 14, air pressure pump; 15, pressure sensor; 16, drug tank; 17, aerosol generator; 18, aerosol delivery tube; 19, drug amount monitoring sensor; 20, temperature regulating sleeve; 21, display screen; 22, operation button; 23, microprocessor; 24, data storage module; 25, relay module; 26, power module; 27, metal corrugated tube protective sleeve; 28, tube clamp; 29, baffle; 30, heat dissipation hole. DETAILED DESCRIPTION

[0025] The present application will be further described below in conjunction with the drawings. DETAILED DESCRIPTION

[0026] Inventions such as Figure 1 As shown, the overall structure of the present invention includes a bed frame 1, a mattress 2, a respiratory monitoring component, a respiratory assistance component, a position adjustment mechanism, a drug atomization mechanism and a control box 3. The bed frame 1 is welded with rectangular steel pipes to provide stable support for the entire device. The mattress 2 is fixed to the upper table of the bed frame 1 by bolts, and is in direct contact with the patient to provide a comfortable lying experience. The sensors of the respiratory monitoring component are respectively installed at key positions of the mattress 2 and the respiratory assistance component to collect the patient's respiratory data in real time; the respiratory assistance component is fixed to the side of the bed frame 1 by a bracket, and is connected to the patient's airway through a pipeline; the drug atomization mechanism is installed on the end of the bed frame 1 through a fixing frame, and is connected to the main airway pipeline 10 of the respiratory assistance component through the atomization delivery pipe 18; the control box 3 is fixed to the side column of the bed frame 1, serving as the control core of the entire device.

[0027] like Figures 3-5 As shown, the chest and abdomen pressure sensor 5 of the respiratory monitoring component is embedded in the mattress 2 at the position corresponding to the patient's chest and abdomen. In the three-layer structure of the mattress 2, the bottom hard sponge provides stable support, and the middle memory foam has good deformation ability. When the patient breathes, the chest and abdomen rise and fall, driving the memory foam to deform, causing the pressure on the chest and abdomen pressure sensor 5 to change. The sensor converts the pressure change into an electrical signal output. The airflow sensor 6 is fixed to the end of the airway interface 9 through a threaded connection. When the patient breathes, airflow flows through the airway interface 9. The airflow sensor 6 can detect parameters such as airflow velocity and flow. The blood oxygen saturation sensor 7 is a finger-clip design. The patient can detect blood oxygen saturation by wearing it on the finger. It is connected to the signal processing box 8 through a wire. The signal processing box 8 is fixed to the side beam of the bed frame 1, receives the original signal of each sensor, and transmits the digital signal to the microprocessor 23 of the control box 3 after amplification, filtering and A / D conversion.

[0028] like Figure 3As shown, the gas path connection of the breathing auxiliary assembly adopts a series connection mode, the airway interface 9 is connected with the outlet valve 12, the pressure sensor 15, the inlet valve 11 and the gas filter 13 in sequence through the main gas path pipeline 10, the gas filter 13 is connected with the output end of the air pressure pump 14 through a pipeline, the inlet valve 11 and the outlet valve 12 are electromagnetic proportional valves, which are fixed on the side beam of the bed body frame 1 through an L-shaped support, can accurately control the on-off and gas flow of the gas path, the high-efficiency filter membrane inside the gas filter 13 can filter impurities and microorganisms in the air, so as to ensure that the gas entering the airway of the patient is clean and sterile, the air pressure pump 14 is installed on the damping mounting seat inside the control box 3, the vibration generated during work is effectively absorbed, reducing the influence on other parts of the device, the pressure sensor 15 is connected in series in the main gas path pipeline 10, which can detect the pressure value in the gas path in real time, the metal bellows protective sleeve 27 outside the main gas path pipeline 10 is fixed on the side beam of the bed body frame 1 through the pipe clamp 28, one pipe clamp 28 is arranged every cm, which ensures that the main gas path pipeline 10 is arranged neatly and is not easy to shake.

[0029] As shown in Figures 3-4 The medicine box 16 of the drug atomization mechanism is made of transparent acrylic material, so that medical staff can directly observe the internal liquid medicine level. The medicine adding port at the top of the medicine box 16 is provided with a sealing cover. The liquid medicine can be added by opening the sealing cover. After the addition is completed, the sealing cover is tightened to ensure the sealing. The deflector 29 at the bottom of the medicine box 16 is inclined at an angle of 15°, so that the liquid medicine can flow to the liquid outlet completely, and the liquid medicine is not left. The atomization generator 17 is installed below the medicine box 16 and connected with the liquid outlet at the bottom of the medicine box 16 through a pipeline to atomize the liquid medicine into small particles. The atomization delivery pipe 18 is made of medical silica gel pipe and has good flexibility and biocompatibility. One end of the atomization delivery pipe 18 is connected with the output port of the atomization generator 17, and the other end is connected with the main gas path pipeline 10 through a three-way joint provided with a one-way valve. The flow direction of the one-way valve is from the atomization generator 17 to the airway interface 9, so as to prevent the gas in the main gas path from flowing back into the atomization delivery pipe 18. The medicine amount monitoring sensor 19 is installed at the center of the bottom of the medicine box 16. The liquid level height of the liquid medicine is detected by ultrasonic waves. When the liquid level is lower than the preset value, the alarm function of the control box 3 is started to remind medical staff to add medicine. The temperature adjusting sleeve 20 is sleeved on the middle part of the atomization delivery pipe 18. The heating wire inside the temperature adjusting sleeve 20 generates heat when electrified to heat the atomized medicine in the atomization delivery pipe 18. The external heat preservation layer reduces heat loss, so that the temperature of the atomized medicine is close to the body temperature of human body, and the comfort of the patient is improved.

[0030] As shown in Figure 2As shown, the front panel of the control box 3 is designed in an inclined manner, the display screen 21 is a touch screen, which can display the respiratory parameters (such as respiratory rate, tidal volume, airway pressure, oxygen saturation, etc.), the working state of the device (such as body position angle, atomization amount, airway pressure, etc.) and the operation menu, and the operation button 22 includes physical buttons for power switch, emergency stop operation and quick trigger of common functions. The control box 3 is divided into three areas by a partition plate. The power module 26 in the power area converts AC 220V mains into DC 24V and DC 5V direct current to power the power components of the entire device. The microprocessor 23 in the control area is the core control unit, which is an STM32F4 series single-chip microcomputer with powerful data processing capability and rich interface resources. The data storage module 24 uses an SD card to store the patient's respiratory data and device operation log. The relay module 25 is used to control the on-off of high-power execution components. The air pressure pump 14 installed in the air pump area is fixed by a shock-absorbing mounting seat to reduce working vibration and noise. The heat dissipation holes 30 on the side of the control box 3 are designed in a louvered manner to prevent dust from entering while ensuring heat dissipation effect. In terms of circuit connection, the microprocessor 23 is connected with the signal processing box 8, the display screen 21, the operation button 22, the angle sensor, the drug amount monitoring sensor 19, and the pressure sensor 15 through wires to receive the input signals of each component. The relay module 25 is connected with the air inlet valve 11, the air outlet valve 12, the air pressure pump 14, the atomization generator 17, and the heating wire of the temperature adjusting sleeve 20 to control the working state of each execution component.

[0031] The working process of the device is as follows: first, the medical staff places the patient on the mattress 2, adjusts the position of the mattress 2 according to the patient's body type, ensures that the chest and abdominal pressure sensor 5 is located below the patient's chest and abdomen, connects the airway interface 9 of the respiratory auxiliary assembly to the patient's respiratory mask or tracheal cannula, wears the oxygen saturation sensor 7 for the patient, and sets the patient's basic information and treatment parameters such as target respiratory rate, airway pressure range, body position angle, atomization drug dose and temperature through the display screen 21 and operation button 22 of the control box 3.

[0032] After starting the device, the respiratory monitoring assembly starts to work: the chest and abdominal pressure sensor 5 detects the chest and abdominal pressure changes when the patient breathes, the airflow sensor 6 detects the airflow parameters at the airway interface 9, and the oxygen saturation sensor 7 detects the patient's oxygen saturation. These raw signals are transmitted to the microprocessor 23 of the control box 3 after being processed by the signal processing box 8. The microprocessor 23 analyzes and processes the data to judge the patient's respiratory state in real time.

[0033] When the patient's respiratory function is weak and needs assisted ventilation, the microprocessor 23 controls the operation of the breathing assistance assembly: the air pressure pump 14 starts to generate compressed gas, which is filtered through the gas filter 13 and enters the main gas path pipeline 10. The inlet valve 11 opens according to the preset parameters, and the compressed gas is delivered to the airway interface 9 through the main gas path pipeline 10 to provide inspiratory support for the patient. When exhaling, the inlet valve 11 is closed, the outlet valve 12 is opened, and the patient's exhaled gas is discharged through the outlet valve 12. The pressure sensor 15 monitors the airway pressure in real time. When the pressure exceeds the preset upper limit, the microprocessor 23 controls the inlet valve 11 to close or the air pressure pump 14 to slow down to reduce the airway pressure. When the pressure is lower than the preset lower limit, the inlet valve 11 is controlled to open or the air pressure pump 14 is controlled to speed up to ensure that the airway pressure is within a safe range.

[0034] During drug aerosol treatment, medical staff add the required drug solution to the medicine box 16, and the microprocessor 23 controls the operation of the atomizer 17 according to the preset parameters to atomize the drug solution into small particles with a diameter of 1-5 μm. The atomized drug is delivered through the atomization delivery pipe 18, and the heating wire of the temperature adjustment sleeve 20 is electrified to heat the atomized drug to near human body temperature to avoid cold stimulation of the patient's respiratory tract. The three-way connector with a one-way valve ensures that all the atomized drug enters the main gas path pipeline 10 and enters the patient's respiratory tract with the respiratory airflow. The drug amount monitoring sensor 19 monitors the amount of drug solution in the medicine box 16 in real time. When the drug solution is insufficient, the display screen 21 displays a low drug amount prompt and sends a prompt sound through the alarm module to remind medical staff to replenish the drug solution in time.

[0035] The data storage module 24 of the control box 3 records the patient's respiratory parameters (respiratory rate, tidal volume, airway pressure, blood oxygen saturation, etc.), device operating parameters (body position angle, atomization amount, gas path pressure, etc.), and operation records in real time. Medical staff can query historical data through the display screen 21 to evaluate the patient's respiratory rehabilitation progress. The control box 3 can also upload data to the hospital information system through the network interface for remote monitoring and data management. When the device has abnormal conditions such as sensor failure, abnormal gas path pressure, and electric push rod jamming, the microprocessor 23 will immediately start the alarm module, display the fault code through the display screen 21, and send an audible and visual alarm signal. At the same time, safety protection measures are taken, such as stopping the air pressure pump 14 from working, closing the inlet valve 11, etc., to ensure patient safety.

[0036] The device fully considers the safety and reliability of medical equipment in mechanical design: all components in contact with the patient are made of medical-grade materials, which have good biocompatibility and antibacterial properties; the gas path pipeline is sealed to ensure that there is no gas leakage; the heat dissipation design of the control box 3 ensures that the internal components operate at a stable temperature; and the installation of each component uses detachable connection methods such as bolts and screws, which facilitates maintenance and replacement of components.

[0037] In summary, the application realizes the organic combination of respiratory monitoring, auxiliary ventilation, body position adjustment and drug atomization by optimizing the mechanical connection relationship and position relationship of each component, and each component cooperates to provide comprehensive respiratory rehabilitation assistance for critical medical patients. The device is stable in structure, convenient to operate, accurate in monitoring and good in auxiliary effect, can effectively improve the respiratory function of critical patients, promote the respiratory rehabilitation process, and has important clinical application value.

[0038] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

[0039] Other parts not described in the present application are all prior art, so they are not described here.

[0040] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A respiratory rehabilitation assist device for critically ill patients, characterized in that: The invention comprises a bed frame (1), a mattress (2), a respiratory monitoring component, a respiratory assistance component, a drug atomization mechanism and a control box (3), wherein the mattress (2) is fixedly connected to the upper table of the bed frame (1) by bolts; The respiratory monitoring component comprises a chest and abdomen pressure sensor (5), an airflow sensor (6), a blood oxygen saturation sensor (7) and a signal processing box (8); the chest and abdomen pressure sensor (5) is embedded in an inner interlayer of the mattress (2) corresponding to the chest and abdomen of the patient; the airflow sensor (6) is fixed to the end of the airway interface (9) of the respiratory assistance component through a threaded connection; the blood oxygen saturation sensor (7) is connected to the signal processing box (8) through a wire; and the signal processing box (8) is fixed to the side beam of the bed frame (1) through screws; The breathing assistance component comprises an airway interface (9), a main airway pipeline (10), an air inlet valve (11), an air outlet valve (12), a gas filter (13), an air pressure pump (14) and a pressure sensor (15). The airway interface (9) is connected to the air outlet valve (12), the pressure sensor (15), the air inlet valve (11) and the gas filter (13) in sequence through the main airway pipeline (10). The gas filter (13) is connected to the output end of the air pressure pump (14) through a pipeline. The air pressure pump (14) is fixed to the inside of the control box (3) by bolts. The air inlet valve (11) and the air outlet valve (12) are fixed to the side horizontal part of the bed frame (1) by a bracket. The medicine atomization mechanism comprises a medicine box (16), an atomization generator (17), an atomization delivery pipe (18), a medicine quantity monitoring sensor (19) and a temperature regulating sleeve (20), wherein the medicine box (16) is mounted on the end of the bed frame (1) through a fixing frame, the atomization generator (17) is connected to the bottom of the medicine box (16) through a pipeline, one end of the atomization delivery pipe (18) is connected to the output port of the atomization generator (17), and the other end is connected to the main gas pipeline (10) through a three-way joint, the medicine quantity monitoring sensor (19) is mounted on the inner bottom of the medicine box (16), and the temperature regulating sleeve (20) is sleeved on the middle outer wall of the atomization delivery pipe (18); The control box (3) is fixed to the side columns of the bed frame (1) by bolts. A microprocessor (23) and a data storage module (24) are provided inside the control box (3). A display screen (21) and operation buttons (22) are provided outside the control box (3). Universal wheels (4) are connected to the four corners of the bottom of the bed frame (1), and the universal wheels (4) are provided with brake components.

2. A respiratory rehabilitation assist device for critical care patients according to claim 1, characterized in that: The mattress (2) adopts a three-layer structural design, including a bottom layer of hard sponge, a middle layer of memory foam, and a surface layer of breathable fabric. The chest and abdomen pressure sensor (5) is located in the interlayer between the middle layer of memory foam and the surface layer of breathable fabric. The lead of the sensor passes through a reserved hole on the side of the mattress (2) and is connected to the signal processing box (8).

3. A respiratory rehabilitation assist device for critical care patients according to claim 1, characterized in that: The main gas pipeline (10) is made of medical-grade PVC material, and the pipelines are connected by threaded joints or quick-connect joints. The outer surface of the pipeline is provided with a metal bellows protective sleeve (27), and the protective sleeve is fixed to the side beam of the bed frame (1) by a pipe clamp (28).

4. A respiratory rehabilitation assist device for critical care patients according to claim 1, characterized in that: The medicine box (16) is made of transparent acrylic material, and is provided with a medicine adding port with a sealing cover on the top, and an inclined guide plate (29) is provided on the bottom. The lowest point of the guide plate (29) is connected to the liquid inlet of the atomizer (17). The medicine amount monitoring sensor (19) is an ultrasonic liquid level sensor, which is fixed to the mounting seat at the bottom of the medicine box (16) through a threaded connection.

5. A respiratory rehabilitation assist device for critical care patients according to claim 1, characterized in that: The atomizing delivery tube (18) is a medical silicone tube, and the temperature regulating sleeve (20) includes a heating wire and a heat-insulating layer. The heating wire is spirally wound around the outer wall of the atomizing delivery tube (18), and the heat-insulating layer is wrapped around the outside of the heating wire. A one-way valve is provided at the three-way connection between the atomizing delivery tube (18) and the main gas pipeline (10).

6. A respiratory rehabilitation assist device for critically ill patients according to claim 1, characterized in that: The front panel of the control box (3) adopts an inclined design, the display screen (21) is embedded in the upper part of the panel, the operation buttons (22) are arranged in a matrix below the display screen (21), the side of the control box (3) is provided with a heat dissipation hole (30) and a power interface, and an independent power module (26) and a relay module (25) are provided inside.

7. A respiratory rehabilitation assist device for critically ill patients according to claim 1, characterized in that: The signal processing box (8) and the control box (3) are connected via a shielded cable, and the output signal lines of the chest and abdomen pressure sensor (5), the airflow sensor (6) and the pressure sensor (15) are all connected to the signal input end of the signal processing box (8), and the output end of the signal processing box (8) is connected to the microprocessor (23) in the control box (3) via a wire.

8. The respiratory rehabilitation assist device for critical care patients according to claim 1, characterized in that: The air inlet valve (11) and the air outlet valve (12) are both electromagnetic proportional valves. The control signal input end of the valve is connected to the relay module (25) in the control box (3) through a wire, and the motor control end of the air pressure pump (14) is connected to the output interface of the microprocessor (23) through a wire.

Images