TW202103668A - Air cushion device and air cushion system for medical care including an air cushion module, a pressure sensing system and a host - Google Patents

Abstract

An air cushion device and an air cushion system for medical care include an air cushion module, a pressure sensing system and a host. The air cushion module includes a plurality of main airbags. The pressure sensing system includes a bus transmission module and a plurality of sensing modules. Each sensing module includes a sensing unit and a switching unit. The sensing unit is arranged on a supporting surface corresponding to a corresponding main airbag and has a conductive circuit pattern and a plurality of conductive blocks. The conductive circuit pattern forms sensing points distributed on the supporting surface of the main airbag. The conductive blocks are set at the sensing points to connect positive and negative wires of the sensing points. When the sensing points are pressed, the sensing points are turned on and their impedances change according to different pressures. The switching unit is electrically connected to the sensing unit and the bus transmission module. The host is connected to the air cushion module and the bus transmission module to receive measured sensing signals and control inflation and deflation of the air cushion module.

Description

Air cushion device and air cushion system for medical care

The invention relates to an air cushion device for medical care, in particular to an air cushion device and an air cushion system for medical care with a pressure sensing function.

Generally, patients who are bedridden for a long time cannot move their body autonomously, they are prone to pressure ulcers due to long-term muscle contact with the bed surface and pressure from body weight. Therefore, caregivers must frequently assist the patient to turn the body to avoid pressure ulcers.

In order to reduce the burden of caregivers, there is an existing air bed that uses airbags that can be alternately inflated and deflated to release the pressure on the muscles of the patient's body in turn. The principle is to arrange multiple tubular airbags side by side along a straight line to form the size of a mattress. Take adjacent airbags in groups of two or three. The airbags in the same group are deflated and inflated in turn. Take two groups as an example. When one of the airbags is inflated, the other airbag is deflated. In this way, each group of inflated airbags supports the patient's body, and each group of deflated airbags does not contact the patient's body, thereby releasing pressure from the patient's muscles, and then deflating for a period The airbag inflates and deflates the inflated airbag, so that alternate inflation and deflation can allow the patient's body muscles to release pressure in turn to reduce the risk of pressure sores.

However, since the body shape and weight of various patients are different, the existing air bed cannot ensure whether the pressure of the airbag is sufficient to support the patient when the patient uses it. When the pressure of the airbag is too low, the patient's body will press on all the airbags. , Even if part of the airbag is deflated, the effect of releasing muscle pressure cannot be achieved. How to monitor the patient's contact with the airbag in real time to avoid the failure of the muscles to release pressure is a problem to be solved.

Therefore, one of the objectives of the present invention is to provide an air cushion device and an air cushion system for medical care that can solve the aforementioned problems.

Therefore, in some embodiments, the air cushion device for medical care of the present invention includes an air cushion module, a pressure sensing system, and a host. The air cushion module includes a plurality of tubular main airbags which can be alternately inflated and deflated. Each main airbag extends in a lateral direction and has an upward supporting surface. The main airbags are arranged side by side in a longitudinal direction to jointly form the main air cushion structure. The pressure sensing system includes a bus transmission module and a plurality of sensing modules. The bus transmission module extends in the longitudinal direction and is located on one side of the air cushion module in the lateral direction, and has a conductive transmission circuit. The sensing modules are respectively arranged in at least a part of the main airbags. Each sensing module includes a sensing unit and a switching unit. The sensing unit is arranged on the supporting surface corresponding to the main airbag and has a conductive A circuit pattern and a plurality of conductive blocks. The conductive circuit pattern includes a plurality of wires to form a plurality of sensing points distributed on the supporting surface and arranged in the lateral direction. The negative wire is composed of the conductive blocks, which are respectively set at the sensing points to connect the positive and negative wires of the corresponding sensing point and make the positive and negative wires of the corresponding sensing point electrically conductive when pressed and follow different pressures An impedance change is generated, and the switching unit is electrically connected to the sensing unit and the bus transmission module to transmit the sensing signal measured by the sensing unit to the bus transmission module. The host is connected to the air cushion module and the confluence transmission module of the pressure sensing system, and includes a control module and an air supply module to receive the sensing signal measured by the pressure sensing system and control the air cushion The module is inflated and deflated.

In some embodiments, the switching unit has a first switching circuit, a second switching circuit, and a microprocessor, the first switching circuit is electrically connected to the sensing unit, and the second switching circuit is electrically connected to the sensing unit. The circuit is electrically connected to the bus transmission module, the microprocessor is electrically connected to the first switching circuit and the second switching circuit, and the sensing signal received from the first switching circuit is integrated and then transmitted to the second switching circuit. The circuit is connected so that the number of wires of the second switching circuit is less than that of the first switching circuit.

In some embodiments, the sensing unit further has a flexible substrate, and the conductive circuit pattern is formed on the surface of the flexible substrate by printing.

In some embodiments, the sensing unit is combined and fixed with the corresponding main airbag in a thermocompression bonding manner.

In some embodiments, the sensing unit is detachably fixed to the corresponding main airbag.

In some embodiments, the sensing unit further has a protective film to cover the conductive circuit pattern and the conductive blocks.

In some embodiments, the wires of the conductive circuit pattern each have a connection end close to the switching unit, and one of the wires is a common wire, and the other wires are independent wires, and each of the independent wires has a terminal at the end. The first electrode part, the common wire has a plurality of second electrode parts respectively matched with the first electrode parts so that each second electrode part and the corresponding first electrode part jointly form one of the sensing points.

In some embodiments, the wires are entirely printed by conductive silver paste, and the first electrode portion and the second electrode portion are also printed on the surface of the conductive silver paste and covered with a conductive ink with a conductivity lower than that of the conductive silver paste. .

In some embodiments, each conductive block has a base layer and a conductive layer covering the base layer.

In some embodiments, the conductive layer includes a layer of high-conductivity material covering the base layer, and a layer of low-conductivity material on the surface layer and covering the high-conductivity material, and the low-conductivity material has a conductivity lower than The high conductivity material.

In some embodiments, the high conductivity material is silver paste, and the low conductivity material is conductive ink.

In some embodiments, an insulating layer is provided between the conductive layer of each conductive block and the corresponding sensing point, and the insulating layer has a plurality of hollow areas. , The negative wire is corresponding, so that the contact area between the conductive layer and the corresponding positive and negative wires can be adjusted by the hollow areas.

In some embodiments, the conductive layer is formed on the surface of the base layer by printing, and the insulating layer is formed on the surface of the conductive layer by printing.

In some embodiments, the conductive blocks are made of conductive rubber.

In some embodiments, the conductive blocks are fabrics made of conductive yarns.

In some embodiments, the air cushion module further includes a plurality of tubular head airbags and three air delivery pipes. The head airbags are arranged side by side in the longitudinal direction and are located on one side of the main airbags. The air delivery pipes Each path extends in the longitudinal direction, and one of the first gas pipelines and one of the second gas pipelines are alternately connected to the main airbags to alternately supply and deflate the main airbags, and one of the third gas pipelines The road is connected to the head airbags to supply air to the head airbags.

In some embodiments, the third gas pipeline is provided with a plurality of check valves, the air cushion module further includes at least one external airbag unit, and the external airbag unit includes one of the reverse valves provided in the third gas pipeline. An external control valve of the check valve and two tubular expansion airbags respectively located on both sides of the main airbags in the transverse direction, the two expansion airbags each extend in the longitudinal direction and are connected to the external control valve to be controlled by the external control valve Gas supply.

In some embodiments, the external control valve has a body, a microprocessor, and a shunt control gas valve. The body has three vent pipes for connecting to one of the third gas pipelines. The check valve and the two expansion airbags, the microprocessor is arranged in the body and is electrically connected to the bus transmission module to be electrically connected to the host through the bus transmission module, and the shunt control air valve is arranged in the body and It is electrically connected with the microprocessor to be controlled by the microprocessor to open or close the gas flow path connecting the two expansion airbags.

Furthermore, in some embodiments, the air cushion system for medical care of the present invention includes an air cushion module, a bus transmission module, a plurality of sensing modules, and a host. The air cushion module includes a plurality of inflatable and deflated tubular main airbags side by side, and each main airbag has a supporting surface facing upward. The bus transmission module is arranged on one side of the air cushion module. The sensing modules are electrically connected to the bus transmission module and are respectively disposed in at least a part of the main airbags of the air cushion module, and each sensing module can sense the support applied to the corresponding main airbag A contact pressure on the surface generates a contact pressure sensing signal, and outputs the contact pressure sensing signal to the bus transmission module. The host includes a control module electrically connected to the bus transmission module to receive the contact pressure sensing signals, an air supply module controlled by the control module to inflate and deflate the main airbags, and a A gas pressure sensor, which is electrically connected to the control module and detects a gas pressure of the gas supply module to generate a gas pressure sensing signal, and transmits the gas pressure sensing signal to the control module; wherein When the host starts to operate, the control module controls the air supply module to inflate the main airbags according to the gas pressure sensing signals and the contact pressure sensing signals until the inflation pressure reaches a first target value and A maximum value of the contact pressure of the main airbags reaches a second target value.

In some embodiments, after the inflation pressure reaches the first target value and the maximum value of the contact pressure of the main airbags reaches the second target value, the control module determines that the air cushion module is set to operate at In an alternate mode, the control module controls the air supply module to inflate a part of the main airbags spaced apart and deflate another part of the main airbags spaced apart, and sense the signal according to the gas pressure And the contact pressure sensing signals to generate a control signal to control the air supply module to adjust the inflation pressure so that the inflation pressure can be maintained at the first target value and the maximum value of the contact pressure of the main airbags Maintain the second target value.

In some implementation aspects, the control module determines that the inflated main airbags have completed inflation and the deflated main airbags have completed deflation and have not received a shutdown signal, and the control module determines that they have reached the preset value. When an alternate time is set, the control module generates an alternate control signal and transmits the alternate control signal to the air supply module, so that the air supply module switches to deflate and deflate the inflated main airbags The main airbags are inflated.

In some implementations, during the operation of the host, the control module will continuously determine whether the user is in bed based on the value of the contact pressure corresponding to the contact pressure sensing signals. If not, Then it is judged that the user got out of bed and recorded; if yes, the control module further analyzes the numerical change and distribution range of the contact pressure to judge the posture of the user lying in bed and record it.

In some implementations, the host further includes an output unit electrically connected to the control module, and the control module determines a continuous state of the user maintaining the same bed position according to the numerical change and distribution range of the contact pressure When the time reaches a preset value, the control module will output a pressure sore risk warning notification through the output unit.

In some implementations, the control module analyzes the value change and distribution range of the contact pressure, and when it determines that the user is in a sitting posture, the control module controls the air supply module to adjust the inflation pressure for use The sitting posture is comfortable, and a sitting up notification is output through the output unit.

In some implementations, the control module determines that the user is in a sitting posture and continuously determines that the contact pressure's center of gravity position moves toward the bedside and is close to a critical value for getting out of bed based on the numerical change and distribution range of the contact pressure. When the time, the control module will output an early warning notification of getting out of bed through the output unit.

In some implementations, after the control module sends out the warning notice of getting out of bed, the control module will continue to determine that the change in the value of the contact pressure is less than that after getting out of bed based on the numerical change and distribution range of the contact pressure. When the threshold is reached, the control module will output a notification of getting out of bed through the output unit.

In some embodiments, in the alternate mode, the control module continuously determines that the contact pressure value of the inflated main airbags fails to reach a minimum preset value based on the contact pressure sensing signals And when the value of the contact pressure of the deflated main airbags is not lower than a maximum preset value, the control module will output a bottoming warning notification through the output unit.

In some embodiments, the output unit includes a display and a speaker, which displays the notification from the control module on the display and causes the speaker to emit a warning sound.

In some implementations, the output unit includes a wireless transmission module that sends notifications from the control module to a mobile device or a cloud server, and the cloud server can communicate with a The mobile device or a monitor is connected so that the mobile device or the monitor can receive notifications through the cloud server and remotely monitor the air cushion system for medical care.

The present invention has at least the following effects: the pressure sensing system is arranged on at least a part of the sensing modules of the main airbags, and each sensing module has multiple sensing points distributed in the corresponding main airbag, so that the patient can be monitored in real time. The contact status with the main airbag ensures that the patient’s muscles can release pressure regularly, effectively reducing the risk of pressure sores.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

1 and 2, a first embodiment of the air cushion device for medical care of the present invention includes an air cushion module 1, a pressure sensing system 2 and a host 3.

The air cushion module 1 includes a plurality of tubular main airbags 11 that can be alternately inflated and deflated. Each main airbag 11 extends in a lateral direction D1 and has an upward supporting surface 111. The main airbags 11 are arranged side by side in a longitudinal direction D2. Together they constitute the main structure of the air cushion. In this embodiment, the air cushion module 1 further includes a plurality of tubular head airbags 12 and three gas pipelines 13,14,15. The head airbags 12 are arranged side by side in the longitudinal direction D2 and are located in the main airbags. On one side of 11, the gas pipelines 13, 14, 15 each extend in the longitudinal direction D2, and a first gas pipeline 13 and a second gas pipeline 14 are alternately connected to the main airbags 11 to align each other. The main airbags 11 alternately supply and deflate air, and one of the third air pipelines 15 connects the head airbags 12 to supply air to the head airbags 12. In detail, in this embodiment, the first gas pipeline 13 and the second gas pipeline 14 are respectively located at positions corresponding to the two ends of the main airbags 11, and the third gas pipeline 15 is located in the first gas pipeline 13 and In the middle of the second gas pipeline 14, each main airbag 11 is provided with an air nozzle 112, and the air nozzle 112 is close to one end of the main airbag 11 to connect the first air pipeline 13 or the second air pipeline 14, as shown in FIG. Show direction, from the right side, the nozzle 112 of the main airbag 11 in the odd-numbered position is connected to the first gas pipeline 13, and the nozzle 112 of the main airbag 11 in the even-numbered position is connected to the second gas pipeline 14, so that The main airbags 11 located in the odd-numbered positions are controlled to be inflated or deflated together, and the main airbags 11 located in the even-numbered positions are controlled to be inflated or deflated together. When the main airbags 11 in the odd-numbered positions are inflated together, the main airbags 11 in the even-numbered positions are deflated together. On the contrary, when the main airbags 11 in the even-numbered positions are inflated together, the main airbags 11 in the even-numbered positions are inflated together. The main airbags 11 are deflated together, so that the adjacent main airbags 11 are alternately inflated and deflated. In addition, in this embodiment, two head airbags 12 are used as an example. Each head airbag 12 is also provided with an air nozzle 121. The air nozzle 121 of the head airbag 12 is located in the middle position to be in line with the third air pipeline. 15 is connected, and the head airbag 12 remains inflated during use to support the patient's head.

The pressure sensing system 2 includes a bus transmission module 4 and a plurality of sensing modules 5. The bus transmission module 4 extends in the longitudinal direction D2 and is located on one side of the air cushion module 1 in the lateral direction D1, that is, at one end of the adjacent main airbags 11, and has a conductive transmission circuit 41 for To transmit power and signals. The sensing modules 5 are respectively provided in at least a part of the main airbags 11. In this embodiment, only a few of the main airbags 11 are provided with the sensing modules 5. However, all the main airbags 11 can also be installed in accordance with requirements. All set up the sensing module 5. 3 and 4 in conjunction, each sensing module 5 includes a sensing unit 51 and a switching unit 52, the sensing unit 51 is provided on the supporting surface 111 corresponding to the main airbag 11 and has a conductive circuit pattern 512 and a plurality of conductive blocks 513. The conductive circuit pattern 512 includes a plurality of conductive lines 512a, 512b to form a plurality of sensing points 512c distributed on the supporting surface 111 and arranged in the lateral direction D1, and each sensing point 512c has two of them as positive and The negative leads 512a, 512b are formed, and the conductive blocks 513 are respectively arranged at the sensing points 512c to connect the positive and negative leads 512a, 512b of the corresponding sensing point 512c, and make the positive and negative leads 512a, 512b of the corresponding sensing point 512c when pressure is applied. , The negative lead wires 512a, 512b are electrically conductive and change in impedance with different pressures. Specifically, when the sensing point 512c is pressed, the contact force between the conductive block 513 and the positive and negative wires 512a, 512b will be increased, so that the conductive material in the conductive block 513 will contact the positive and negative wires 512a, 512b, thereby connecting The positive and negative wires 512a, 512b are conductive, and when the pressure at the sensing point 512c increases, more conductive materials in the conductive block 513 conduct with the positive and negative wires 512a, 512b to reduce the impedance, which can be measured The pressure condition at the sensing point 512c. In this embodiment, the sensing points 512c are distributed at different positions of the supporting surface 111 of the main airbag 11 in the lateral direction D1, and can sense whether the patient is in contact with the main airbag 11 and the pressure generated during contact, thereby monitoring Does it really release the patient’s muscle pressure?

In this embodiment, the sensing unit 51 further has a flexible substrate 511, such as a film made of thermoplastic polyurethane (TPU), polyurethane (PU) and other polymer materials, and the conductive circuit pattern 512 is formed on the substrate by printing. On the surface of the flexible substrate 511, the wires 512a, 512b of the conductive circuit pattern 512 each have a connection end 512d close to the switching unit 52, and one of the wires is a common wire 512a, and the remaining wires are independent wires 512b. If the common wire 512a is set If it is a positive electrode, the independent lead 512b is a negative electrode. On the contrary, if the common lead 512a is set as a negative electrode, the independent lead 512b is a positive electrode. That is, the common lead 512a and the independent lead 512b have different polarities. Each of the independent wires 512b also has a first electrode portion 512e at the end, and the common wire 512a has a plurality of second electrode portions 512f respectively matched with the first electrode portions 512e so that each second electrode portion 512f and The corresponding first electrode portions 512e jointly form one of the sensing points 512c. Understandably, in a modified embodiment, the plurality of second electrode portions 512f may also be formed on different wires. The wires 512a, 512b are printed with conductive silver paste as a whole, and the first electrode portions 512e and the second electrode portions 512f are also printed on the surface of the conductive silver paste to cover a layer of conductive ink with a conductivity lower than that of the conductive silver paste, for example Carbon-based conductive ink to reduce the conductivity sensitivity of the first electrode portion 512e and the second electrode portion 512f. Each conductive block 513 has a base layer 513a and a conductive layer 513b covering the base layer 513a. In this embodiment, the conductive layer 513b includes a layer of high conductivity material 5131 covering the base layer 513a, and a layer on the surface layer. And the low conductivity material 5132 covered on the high conductivity material 5131 has a conductivity lower than that of the high conductivity material 5131. The base layer 513a can be, for example, a film made of polymer materials such as polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), polyurethane (PU), etc. The high conductivity material 5131 is silver paste, and the low conductivity material 5132 is conductive ink and carbon-based conductive ink is preferred. The conductive block 513 can be fixed by thermocompression bonding or gluing through the base layer 513a and the flexible substrate 511. The conductive layer 513b is formed on the base layer 513a by printing, and the impedance of the low-conductivity material 5132 can be adjusted according to usage requirements. The low conductivity material 5132 not only protects the silver paste from oxidation, but also prevents the high conductivity material 5131 from directly contacting the first electrode portion 512e and the second electrode portion 512f so that the sensing point 512c is always on. The state cannot have a sensing function. In other words, due to the low conductivity of the low conductivity material 5132, when the sensing point 512c is not pressed, the impedance is large, so that the first electrode portion 512e and the second electrode portion 512f are in a non-conducting state. When pressed, the high-conductivity material 5131 will participate in the conduction and reduce the impedance. The greater the pressure of the sensing point 512c, the more the high-conductivity material 5131 will participate in the conduction and reduce the impedance. Similarly, the low conductivity material 5132 is located on the surface to contact the first electrode portion 512e and the second electrode portion 512f to reduce the conductivity sensitivity, which can increase the operating range of the sensing circuit to increase the information available for analysis.

In a modified embodiment, referring to FIGS. 5 and 6, the conductive layer 513b of the conductive block 513 can also be formed of a single material, for example, formed by printing a conductive ink on the base layer 513a, and the conductive layer 513b of each conductive block 513 and An insulating layer 513c can also be provided between the corresponding sensing points 512c, and the insulating layer 513c has a plurality of hollow areas 5131. The positions of the hollow areas 5131 and the positive and negative electrodes 512a, 512b of the sensing point 512c ( That is, the first electrode portion 512e and the second electrode portion 512f) correspond to each other, so as to adjust the contact area between the conductive layer 513b and the corresponding positive and negative electrode wires 512a, 512b through the hollow areas 5131. In other words, the shape, size, and quantity of the hollow area 5131 can be changed and adjusted. For example, FIG. 7 shows another layout of the hollow area 5131. By adjusting the thickness of the insulating layer 513c and the shape, size and quantity of the hollow area 5131, the conductive layer 513b and the positive and negative leads 512a, 512b (that is, the first electrode portion 512e and the second electrode portion 512e and the second electrode portion 512e) can be adjusted when the patient presses the conductive block 513. The contact area of the electrode portion 512f), and by reducing the contact area between the conductive layer 513b and the positive and negative wires 512a, 512b, the conductivity sensitivity can be reduced, and the active range of the sensing circuit can be increased to increase the information available for analysis. The insulating layer 513c can be a part of the conductive block 513. For example, it is formed on the surface of the conductive layer 513b by printing, which is more convenient to manufacture. However, the insulating layer 513c can also be made separately from the conductive block 513. After the insulating layer 513c is provided on the surface of the pattern 512, the conductive block 513 is provided. In other variations, the conductive block 513 can also be made of conductive rubber, or a fabric made of conductive yarns. Both conductive rubber and fabrics made of conductive yarns can increase conductivity (reduce impedance) due to pressure. ).

1 to 4 again, the sensing unit 51 further has a protective film 514 to cover the conductive circuit pattern 512 and the conductive blocks 513 to protect the conductive circuit pattern 512 and the conductive blocks 513. The sensing unit 51 can be combined and fixed with the corresponding main airbag 11 in a thermocompression bonding manner, or can be fixed in a detachable combination with the corresponding main airbag 11, for example, fixed with double-sided adhesive tape so as to be detachable. When the sensing unit 51 is combined with the corresponding main airbag 11, the side of the flexible substrate 511 that is not provided with the conductive circuit pattern 512 may face the main airbag 11, or the flexible substrate 511 may be provided with the conductive circuit pattern 512. The side facing the main airbag 11 is not limited. In a modified embodiment, the conductive circuit pattern 512 can also be directly printed on the surface of the main airbag 11.

The switching unit 52 is electrically connected to the sensing unit 51 and the bus transmission module 4 to transmit the sensing signal measured by the sensing unit 51 to the bus transmission module 4. In this embodiment, the switching unit 52 is a flexible circuit board with a first switching circuit 521, a second switching circuit 522, and a microprocessor 523. The first switching circuit 521 is electrically connected to the sensing unit 51, the second switching circuit 522 is electrically connected to the bus transmission module 4, and the microprocessor 523 is electrically connected to the first switching circuit 521 and the first switching circuit 521. The second switching circuit 522 integrates the sensing signal received from the first switching circuit 521 and then transmits it to the second switching circuit 522, so that the number of wires 512a, 512b of the second switching circuit 522 is less than that of the first switching circuit 522. A switching circuit 521. Specifically, in this embodiment, the first switching circuit 521 has seven lines in total to match the number of wires 512a and 512b of the conductive circuit pattern 512, and the conductive circuit pattern 512 uses seven wires 512a and 512b to form six sensing points 512c. The number of wires 512a and 512b of the conductive circuit pattern 512 can be increased or decreased according to the number of sensing points 512c required. The number of wires of the first switching circuit 521 is adjusted to match the number of wires 512a and 512b of the conductive circuit pattern 512. The microprocessor 523 sets an identification (ID) corresponding to each sensing point 512c to identify the sensing point 512c at which position the sensing signal originated from, and integrates the signal through two of the second switching circuits 522 Two lines transmit signals to the bus transmission module 4. In this embodiment, the second switching circuit 522 has four lines in total, two of which transmit signals and the other two transmit power. However, in a modified embodiment, the second switching circuit 522 may also have only two lines, so that Power and signal share line transmission. In other words, the number of lines of the first switching circuit 521 needs to be adjusted in accordance with the number of wires 512a and 512b of the conductive circuit pattern 512, and the signal received from the sensing unit 51 is processed by the microprocessor 523 and then transmitted to the second switching circuit 522 Therefore, the second switching circuit 522 only needs two wires to transmit the signals processed by the microprocessor 523. That is, when the number of wires 512a, 512b of the conductive circuit pattern 512 increases to increase the number of sensing points 512c, the first The second switching circuit 522 still only needs two lines or four lines, so that the transmission circuit 41 of the bus transmission module 4 cooperates with the second switching circuit 522 only needs two lines or four lines, which can reduce the bus transmission. The number of lines of the transmission circuit 41 of the module 4 does not need to be adjusted corresponding to the number of wires 512a and 512b of the conductive line pattern 512. In this embodiment, the transmission circuit 41 of the bus transmission module 4 cooperates with the second switching circuit 522 to have four lines for one-to-one electrical connection between the lines of the second switching circuit 522 and the transmission circuit 41.

In conjunction with FIG. 8, the host 3 is connected to the air cushion module 1 and the confluence transmission module 4 of the pressure sensing system 2, and includes a control module 31 and an air supply module 32. The control module 31 receives The pressure sensing system 2 detects the sensing signal and controls the air supply module 32 to inflate and deflate the air cushion module 1. Specifically, the control module 31 includes a control panel, a processor, a memory, a power supply circuit, etc., and the air supply module 32 includes an air pump drive circuit, an air pump, an air diverter control valve, and the like. In addition, the host 3 is also provided with a gas pressure sensor (not shown), and the gas pressure sensor is electrically connected to the processor and detects a gas pressure of the gas supply module 32 to generate a gas pressure sensor. The signal is detected, and the gas pressure sensing signal is sent to the processor of the control module 31. The control panel is used for the caregiver to operate to control the operation of the host 3. The processor is electrically connected to the bus transmission module 4, control panel, memory, power line, gas pressure sensor and air pump drive circuit, etc., to process and receive signals and generate control commands to control the air supply module 32 Inflate and deflate the air cushion module 1 so that the head airbag 12 and the main airbag 11 of the air cushion module 1 can maintain proper air pressure, that is, the contact of the patient is sensed by the sensing modules 5 located in different main airbags 11 The pressure and related information are transmitted to the processor of the control module 31, and the processor of the control module 31 can adjust the air pressure of the main airbag 11 according to the pressure information sensed to ensure that the muscles of each part of the patient can be released regularly Pressure to reduce the risk of pressure ulcers. In addition, in this embodiment, the host 3 further includes an output unit, the output unit includes a wireless transmission module 33, the wireless transmission module 33 can be connected to the control module 31 and a mobile device (not (Illustration) transfer information between mobile devices, such as mobile phones, tablets, laptops, etc., for caregivers to monitor the status of the patient using the air cushion module 1, for example, when the air pressure control fails and the main airbag 11 cannot reach the turn During the decompression function, a warning message is displayed on the mobile device, so that the caregiver can check whether the air cushion device is working properly and provide assistance to the patient to avoid the patient's discomfort. In addition, the output unit may also include a display and a speaker, which can display the warning information or warning notification from the control module 31 on the display and make the speaker emit a warning sound.

9 and 10, the second embodiment of the air cushion device for medical care of the present invention is different from the first embodiment in that, in the second embodiment, the third gas pipeline 15 is provided with a plurality of backstops. The air cushion module 1 also includes two external airbag units 16. Each external airbag unit 16 includes an external control valve 161 arranged on one of the check valves 151 of the third air pipeline 15 and in the transverse direction D1 There are two tubular expansion airbags 162 respectively located on both sides of the main airbags 11, the two expansion airbags 162 each extend in the longitudinal direction D2 and are connected to the external control valve 161 to be controlled by the external control valve 161 to supply air. The external control valve 161 has a body 161a, a microprocessor 161b, and a flow control valve 161c. The main body 161a has three vent pipe portions 1611 for connecting to one of the check valves 151 and the two expansion airbags 162 respectively provided in the third gas pipeline 15. The vent pipe portion 1611 can be connected to the expansion airbags by, for example, a hose. 162 gas nozzle (not shown). The microprocessor 161b is arranged in the body 161a and is electrically connected to the bus transmission module 4 to be electrically connected to the host 3 through the bus transmission module 4, and the microprocessor 161b can be connected to the bus transmission module through a wire 4Electrical connection. The flow control gas valve 161c is arranged on the main body 161a and is electrically connected to the microprocessor 161b to be controlled by the microprocessor 161b to open or close the gas flow path connecting the two expansion airbags 162. That is, the flow control valve 161c can be controlled by the host 3 through the microprocessor 161b to inflate or deflate the two expansion airbags 162. The external airbag unit 16 can be set according to use requirements to increase the length of the air cushion module 1 in the lateral direction D1, which is suitable for larger patients. On the basis of the air cushion module 1 of the first embodiment, at least one external airbag can be added. The unit 16, that is, only one external airbag unit 16 or two or more external airbag units 16 can also be implemented. For example, in the second embodiment, the third gas pipeline 15 is preset with four check valves 151, and only the two check valves 151 in the middle are connected to the external airbag unit 16 at the head and tail ends of the entire row of main airbags 11. The valve 151 is not connected to the external airbag unit 16.

Furthermore, an embodiment of the method for controlling the inflation and deflation of the air cushion module 1 by the air cushion system for medical care of the present invention is shown in FIG. 11. First, as shown in step S11 of FIG. 11, when the host 3 starts to operate, the control module 31 in the host 3 will be based on the gas pressure sensor that detects the inflation pressure of the gas supply module 31 The returned gas pressure sensing signal and the contact pressure sensing signal returned by the sensing points 512c of the sensing modules 5 know a gas pressure inside the main airbag 11 (that is, the The inflation pressure is equivalent to the gas pressure inside the main airbags 11) and a contact pressure caused by the user outside the main airbags 11, and as shown in step S12 of FIG. 11, the inflation pressure and the contact pressures are generated A control signal controls the air supply module 32 to inflate the main airbags 11 through the first air pipeline 13 and the second air pipeline 14. Specifically, the control module 31 generates the control signal according to the difference between the inflation pressure and a preset first target value and the difference between a maximum value of the contact pressures and a second target value, so as to control The air supply module 32 adjusts the inflation air pressure output to the first air pipeline 13 and the second air pipeline 14 and continuously inflates the main airbags 11.

Then, as shown in step S13 of FIG. 11, the control module 31 determines whether the inflation air pressure reaches the first target value, and whether the maximum value of the contact pressure of the main airbags 11 has reached the second target value If not, return to step S11 again, and continue to control the air supply module 32 to inflate the main airbags 11; if yes, as shown in step S14 of FIG. 11, the control module 32 determines the air cushion module 1 Whether it is set to operate in the alternate mode, if not, go back to step S11 to continuously control the air supply module 32 to inflate the main airbags 11 to maintain the air pressure of the main airbags 11 at the target value; if yes, then In step S15 of FIG. 11, the control module 31 controls the air supply module 32 to alternately supply and deflate the main airbags 11 through the first air pipe 13 and the second air pipe 14, for example, The first gas pipeline 13 inflates the main airbag 11 at the odd-numbered position, and the second air pipeline 14 deflates the main airbag 11 at the even-numbered position; then, in step S16 of FIG. 11, the control module 31. Continue to learn the gas inside the inflated main airbag 11 according to the gas pressure sensing signal returned by the gas pressure sensor and the contact pressure sensing signal returned by the sensing modules 5 Pressure and the external contact pressure.

Then in step S17 of FIG. 11, the control module 31 generates a control signal according to the above-mentioned inflation air pressure and the contact pressures to control the air supply module 32 to adjust the inflation air pressure. Specifically, the control module 31 generates the control signal according to the difference between the inflation air pressure and the first target value, and controls the air supply module 32 to appropriately adjust the inflation air pressure so that the inflation air pressure can be used in the alternate mode. Maintain the first target value.

Then, in step S18 of FIG. 1, the control module 31 again determines whether the main airbags 11 that have been inflated have completed the air supply (that is, the inflation pressure has reached the first target value and the maximum value of the contact pressure has been reached). Reach the second target value), if not, go back to step S16, continue to detect the inflation air pressure and the contact pressure outside the main airbags, and repeat step S17; if yes, go to step S19 in FIG. 11, the The control module 31 determines whether a shutdown signal is received. If it is, the control module 31 will stop operating. If not, as shown in step S20 in FIG. 1, the control module 31 determines whether a preset alternate time has been reached, such as 15 If not, go back to step S16, continue to detect the inflation pressure and the contact pressure outside the main airbags 11, and repeat step S17, if yes, go to step S21 of FIG. 11 to generate an alternate control signal and Send the alternate control signal to the air supply module 32, and return to step S15 to change the air supply module 32 to, for example, the first air pipe 13 to deflate the main airbag 11 at the odd position, and the airbag 11 The second gas pipeline 14 inflates the main airbag 11 located at an even-numbered position. Thereby, the air pressure in the main airbags 11 can be maintained at the target value during the alternate inflation and deflation process. And the control module 31 also records alternate events, such as recording alternate time points and alternate current gas pressure inside the main airbags 11 and the external contact pressure, etc., for subsequent analysis. The alternate mode is useful for improving the user’s bed rest. Application of questions, etc.

Furthermore, during the operation of the host 3, the control module 31 can also analyze the contact pressure represented by the contact pressure sensing signal returned from the sensing point 512c of each sensing module 5. Determine whether the user (patient) is in bed or not and the posture of the user (patient) and record it. First, as shown in step S21 of FIG. 12, the control module 31 continuously receives the contact pressure sensing signals returned from each sensing point 512c, and knows the contact pressure sensing signals from the contact pressure sensing signals. The contact pressure outside the inflated main airbag 11 and the contact pressure outside the deflated main airbag 11. Then, as shown in step S22 of FIG. 12, the control module 31 will periodically, such as but not limited to every 1 minute, determine whether the user is lying in bed according to the value of the contact pressure of the main airbags 11. If so, that is, the contact pressure values of some of the main airbags 11 are significantly higher than the contact pressures of the remaining parts of the main airbag 11, for example, the difference between the two pressure values is higher than a first preset value, the control The module 31 determines that the user is in bed.

Then, as shown in step S23 of FIG. 12, the control module 31 further analyzes the change in the value of the contact pressure corresponding to the contact pressure sensing signal returned by the sensing point 512c and its distribution range to determine The user's posture in bed is lying on his back, lying on the right side, lying on the left side, or sitting up. For example, when the area with higher contact pressure is mainly distributed in the middle position of the air cushion bed composed of the main airbags 11, the control module 31 determines that the user is in a lying (lying) posture; when the contact pressure is higher When the area is mainly distributed on the right side of the air bed, the control module 31 determines that the user is lying on the right side; when the area with higher contact pressure is mainly distributed on the left side of the air bed, the control module 31 determines The user is lying on the left side. Then, as shown in step S24 of FIG. 12, the control module 31 records the result of the judgment, which includes but is not limited to the posture of lying in bed and judgment of the current time.

In this way, the control module 31 can monitor a duration for the user to maintain the same bed posture, and determine that the duration reaches a preset value, for example, two hours, that is, it is determined that there is a risk of pressure sores. Therefore, the control model Group 31 will timely output a pressure sore risk warning notification through the output unit according to the pressure sore risk.

In addition, the control module 31 analyzes the value changes and distribution ranges of the contact pressures corresponding to the contact pressure sensing signals returned by the sensing points 512c, and determines that the user is in a sitting posture and controls the The air supply module 32 increases the inflation air pressure, that is, increases the internal air pressure of the main airbags 11 that are inflated, so that the user sits more comfortably, and the control module 31 outputs a sitting up through the output unit Notice.

In step S22, if the control module 31 determines that the user is not lying in bed (that is, getting out of bed) according to the contact pressure corresponding to the contact pressure sensing signal returned from each sensing point 512c, for example, all the senses The value of the contact pressure corresponding to the contact pressure sensing signal returned by the measuring point 512c has little difference and is less than a second preset value, the control module 31 determines that the user gets out of bed, and executes step S24 to record The result of the judgment, such as recording the current time of judgment (ie, time to get out of bed). At the same time, the control module 31 also outputs a bed exit notification through the output unit.

Alternatively, after determining that the user is in a sitting posture, the control module 31 will continue to determine when the position of the center of gravity of the contact pressure moves toward the bedside and is close to a critical value based on the numerical change and distribution range of the contact pressure. If it is determined that the user may want to get out of bed, the control module 31 will output a bed out warning notification through the output unit. In addition, after the control module 31 sends out the warning notice of getting out of bed, it will continue to determine that the change in the value of the contact pressure is less than a critical value based on the change in the value and the distribution range of the contact pressure, and then it is determined that the user has got out of bed. , The control module 31 will output a notification of getting out of bed through the output unit.

Then, in step S25 of FIG. 11, the control module 31 determines whether a shutdown signal is received, if so, it stops the air cushion device, and if not, it returns to step S21 again.

In addition, in the alternate mode, when the control module 31 finds that the air pressure in the main airbags 11 cannot reach the target value during the alternate inflation and deflation process, for example, the control module 31 will continue to respond to the contact pressure. By measuring the signal, it is determined that the value of the contact pressure of the inflated main airbags 11 fails to reach a minimum preset value within a preset time (for example, 5 minutes), and the deflated main airbags 11 When the value of the contact pressure does not fall below a maximum preset value within the preset time, the control module 31 determines that the inflation and deflation are abnormal and outputs a bottom out warning notification through the output unit.

In addition, the aforementioned output unit outputs the pressure ulcer risk warning notice, the getting out of bed warning notice, the out of bed warning notice, and the bottoming out warning notice to the display and causing the speaker to emit a corresponding warning sound. The output unit also sends (transmits) to the mobile device or a monitor of the caregiver through the wireless transmission module 33, so that the caregiver can send control signals or setting information to the control through the mobile device or the monitor. The module 31 can remotely monitor the air cushion module 1; or the wireless transmission module 33 can also send the above notifications to a cloud server (not shown), and the caregiver can communicate with the cloud server The mobile device or the monitor connected to the device receives the aforementioned notification messages from the cloud server, and sends control signals or setting information to the control module 31 through the cloud server to remotely monitor the air cushion module 1.

In summary, the pressure sensing system 2 is provided in at least a portion of the sensing modules 5 of the main airbag 11, and each sensing module 5 has a plurality of sensing points 512c distributed on the corresponding main airbag 11, and The contact status between the patient and the main airbag 11 can be monitored in real time to ensure that the muscles of each part of the patient can release the pressure regularly, which effectively reduces the risk of pressure sores.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1: Air cushion module 11: Main airbag 111: support surface 112: Gas Mouth 12: Head airbag 121: Gas Mouth 13: The first gas pipeline 14: The second gas pipeline 15: The third gas pipeline 151: check valve 16: External airbag unit 161: External control valve 161a: body 1611: Snorkel 161b: Microprocessor 161c: Diversion control valve 162: Expand the airbag 2: Pressure sensing system 3: host 31: control module 32: Air supply module 33: wireless transmission module 4: Confluence transmission module 41: Transmission circuit 5: Sensing module 51: sensing unit 511: Flexible substrate 512: Conductive circuit pattern 512a: shared wire 512b: Independent wire 512c: sensing point 512d: connecting end 512e: first electrode part 512f: second electrode part 513: Conductive block 513a: grassroots 513b: conductive layer 5131: High conductivity material 5132: Low conductivity material 513c: insulating layer 5131: hollow area 514: protective film 52: transfer unit 521: first switching circuit 522: second switching circuit 523: Microprocessor D1: horizontal D2: Portrait S11~S21: steps S21~S25: steps

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Fig. 1 is a schematic diagram of a first embodiment of an air cushion device for medical care of the present invention; Figure 2 is a perspective view illustrating the main airbag of the first embodiment; FIG. 3 is a schematic diagram illustrating the sensing module of the first embodiment; 4 is a schematic partial cross-sectional view illustrating the sensing unit of the sensing module of the first embodiment; Fig. 5 is a view similar to Fig. 4, illustrating the implementation of changes; FIG. 6 is a schematic diagram illustrating the insulating layer of the sensing unit; Fig. 7 is a view similar to Fig. 6 illustrating the implementation of changes; Figure 8 is a block diagram illustrating the host of the first embodiment; 9 is a schematic diagram of the second embodiment of the air cushion device for medical care of the present invention; FIG. 10 is a schematic diagram of the external control valve of the second embodiment; 11 illustrates the control flow of alternately inflating and deflating the air cushion module when an embodiment of the air cushion system for medical care of the present invention operates in an alternate mode; and FIG. 12 illustrates the flow of detecting the contact pressure of the air cushion module to determine the user's bed posture according to an embodiment of the air cushion system for medical care of the present invention.

1: Air cushion module

11: Main airbag

111: support surface

112: Gas Mouth

12: Head airbag

121: Gas Mouth

13: The first gas pipeline

14: The second gas pipeline

15: The third gas pipeline

2: Pressure sensing system

3: host

4: Confluence transmission module

41: Transmission circuit

5: Sensing module

51: sensing unit

52: transfer unit

D1: horizontal

D2: Portrait

Claims (29)

An air cushion device for medical care, including: An air cushion module includes a plurality of tubular main airbags that can be alternately inflated and deflated, each of the main airbags extends in a transverse direction and has an upward supporting surface, and the main airbags are arranged side by side in a longitudinal direction to jointly form the air cushion main structure; A pressure sensing system, including A bus transmission module extending in the longitudinal direction and located on one side of the air cushion module in the lateral direction, and having a conductive transmission circuit, and A plurality of sensing modules are respectively arranged in at least a part of the main airbags. Each sensing module includes a sensing unit and a switching unit. The sensing unit is arranged on a supporting surface corresponding to the main airbag and has a A conductive circuit pattern and a plurality of conductive blocks, the conductive circuit pattern includes a plurality of wires to form a plurality of sensing points distributed on the supporting surface and arranged in the lateral direction, and each sensing point has two of them as positive electrodes respectively The conductive blocks are respectively arranged at the sensing points to connect the positive and negative leads of the corresponding sensing points and make the positive and negative leads of the corresponding sensing points electrically conductive when pressure is applied. The pressure generates an impedance change, and the switching unit is electrically connected to the sensing unit and the bus transmission module to transmit the sensing signal measured by the sensing unit to the bus transmission module; and A host connected to the air cushion module and the bus transmission module of the pressure sensing system, and includes a control module and an air supply module to receive the sensing signal measured by the pressure sensing system and control the The air cushion module is inflated and deflated. The air cushion device for medical care according to claim 1, wherein the switching unit has a first switching circuit, a second switching circuit, and a microprocessor, and the first switching circuit and the sensing unit are electrically connected to each other. Connected, the second switching circuit is electrically connected to the bus transmission module, and the microprocessor is electrically connected to the first switching circuit and the second switching circuit and integrates the sensing signal received from the first switching circuit And then transmit to the second switching circuit, so that the number of wires of the second switching circuit is less than that of the first switching circuit. The air cushion device for medical care according to claim 1, wherein the sensing unit further has a flexible substrate, and the conductive circuit pattern is formed on the surface of the flexible substrate by printing. According to claim 3, the air cushion device for medical care, wherein the sensing unit is combined and fixed with the corresponding main airbag in a thermocompression bonding manner. The air cushion device for medical care according to claim 3, wherein the sensing unit and the corresponding main airbag are detachably combined and fixed. The air cushion device for medical care according to claim 3, wherein the sensing unit further has a protective film to cover the conductive circuit pattern and the conductive blocks. The air cushion device for medical care according to claim 3, wherein the wires of the conductive circuit pattern each have a connection end close to the switching unit, and one of the wires is a common wire, and the remaining wires are independent wires. Each also has a first electrode portion at the end, and the common wire has a plurality of second electrode portions respectively matched with the first electrode portions so that each second electrode portion and the corresponding first electrode portion together form one of them Sensing point. The air cushion device for medical care according to claim 7, wherein the wires are entirely printed by conductive silver paste, and the first electrode part and the second electrode part are also printed on the surface of the conductive silver paste and covered with a layer of conductivity Conductive ink smaller than conductive silver paste. The air cushion device for medical care according to claim 1, wherein each conductive block has a base layer and a conductive layer covering the base layer. The air-cushion device for medical care according to claim 9, wherein the conductive layer includes a layer of high-conductivity material covering the base layer, and a layer of low-conductivity material on the surface layer and covering the high-conductivity material, the low-conductivity material The conductivity of the coefficient material is lower than that of the high conductivity material. The air cushion device for medical care according to claim 10, wherein the high conductivity material is silver paste, and the low conductivity material is conductive ink. The air cushion device for medical care according to claim 9, wherein an insulating layer is provided between the conductive layer of each conductive block and the corresponding sensing point, and the insulating layer has a plurality of hollow areas, and the positions where the hollow areas are distributed Corresponding to the positive and negative wires of the sensing point, the contact area between the conductive layer and the corresponding positive and negative wires is adjusted through the hollow areas. The air cushion device for medical care according to claim 12, wherein the conductive layer is formed on the surface of the base layer by printing, and the insulating layer is formed on the surface of the conductive layer by printing. The air cushion device for medical care according to claim 1, wherein the conductive blocks are made of conductive rubber. The air cushion device for medical care according to claim 1, wherein the conductive blocks are fabrics made of conductive yarns. The air-cushion device for medical care according to claim 1, wherein the air-cushion module further includes a plurality of tubular head airbags and three air delivery pipelines, and the head airbags are arranged side by side in the longitudinal direction and located between the main airbags. On one side, the gas pipelines each extend in the longitudinal direction, and one of the first gas pipeline and one of the second gas pipelines alternately connect the main airbags to alternately supply and deflate the main airbags, And one of the third gas pipelines is connected to the head airbags to supply air to the head airbags. The air cushion device for medical care according to claim 16, wherein the third gas pipeline is provided with a plurality of check valves, the air cushion module further includes at least one external airbag unit, and the external airbag unit includes An external control valve of one of the check valves of the gas pipeline and two tubular expansion airbags respectively located on both sides of the main airbags in the transverse direction, the two expansion airbags each extending in the longitudinal direction and connected to the external control valve The air supply is controlled by the external control valve. The air cushion device for medical care according to claim 17, wherein the external control valve has a main body, a microprocessor, and a shunt control air valve, and the main body has three vent pipes for connecting to the first One of the check valves of the three gas pipelines and the two expansion airbags, the microprocessor is arranged in the body and is electrically connected to the bus transmission module to be electrically connected to the host through the bus transmission module, and the shunt control The gas valve is arranged on the main body and is electrically connected with the microprocessor to be controlled by the microprocessor to open or close the gas flow path connecting the two expansion airbags. An air cushion system for medical care, including: An air cushion module, including Multiple tubular main airbags side by side that can be inflated and deflated, each of which has a supporting surface facing upwards; A bus transmission module, arranged on one side of the air cushion module; A plurality of sensing modules are electrically connected to the bus transmission module and are respectively provided in at least a part of the main airbags of the air cushion module, and each sensing module can sense the main airbag applied to the corresponding main airbag A contact pressure on the supporting surface generates a contact pressure sensing signal, and outputs the contact pressure sensing signal to the bus transmission module; and A host including A control module electrically connected with the bus transmission module to receive the contact pressure sensing signals; An air supply module controlled by the control module to inflate and deflate the main airbags; A gas pressure sensor is electrically connected to the control module and detects a gas pressure of the gas supply module to generate a gas pressure sensing signal, and transmits the gas pressure sensing signal to the control module; wherein When the host starts to operate, the control module controls the air supply module to inflate the main airbags according to the gas pressure sensing signal and the contact pressure sensing signals until the inflation pressure reaches a first target value and A maximum value of the contact pressure of the main airbags reaches a second target value. The air cushion system for medical care according to claim 19, wherein after the inflation air pressure reaches the first target value and the maximum value of the contact pressure of the main airbags reaches the second target value, the control module determines the air cushion When the module is set to operate in an alternate mode, the control module controls the air supply module to inflate a part of the main airbags that are spaced apart and deflate another part of the main airbags that are spaced apart according to The gas pressure sensing signal and the contact pressure sensing signals generate a control signal to control the air supply module to adjust the inflation pressure, so that the inflation pressure can be maintained at the first target value and the contact of the main airbags The maximum pressure can be maintained at the second target value. The air cushion system for medical care according to claim 20, wherein the control module determines that the inflated main airbags have completed inflation and the deflated main airbags have completed deflation without receiving a shutdown signal, and the control When the module determines that a preset alternate time has been reached, the control module generates an alternate control signal and transmits the alternate control signal to the air supply module, so that the air supply module switches to the inflated main The airbag is deflated and inflates the deflated main airbags. The air cushion system for medical care according to claim 20, wherein during the operation of the host, the control module will continuously determine the user based on the contact pressure values corresponding to the contact pressure sensing signals Whether the user is lying in bed or not, if not, it is determined that the user gets out of the bed and recorded; if yes, the control module further analyzes the numerical change and distribution range of the contact pressure to determine the posture of the user lying in bed and record it. According to claim 22, the air cushion system for medical care, wherein the host further includes an output unit electrically connected to the control module, and the control module determines that the user maintains according to the numerical change and distribution range of the contact pressure When a duration of the same bed posture reaches a preset value, the control module will output a pressure sore risk warning notification through the output unit. For example, the air cushion system for medical care according to claim 23, wherein the control module analyzes the numerical change and distribution range of the contact pressure, and when it determines that the user is in a sitting posture, the control module controls the air supply module to adjust The inflatable air pressure allows the user to sit comfortably, and a sitting-up notification is output through the output unit. The air cushion system for medical care according to claim 24, wherein the control module determines that the user is in a sitting posture and continuously determines that the center of gravity of the contact pressure moves to the side of the bed based on the numerical change and distribution range of the contact pressure And when approaching a critical value of getting out of bed, the control module will output an early warning of getting out of bed through the output unit. For example, the air cushion system for medical care according to claim 25, wherein after the control module sends out the warning notice of getting out of bed, the control module will continuously determine the value of the contact pressure according to the value change and distribution range of the contact pressure When the changes are less than a critical value after getting out of bed, the control module will output a notice of getting out of bed through the output unit. According to claim 23, the air cushion system for medical care, wherein in the alternate mode, the control module continuously determines that the value of the contact pressure of the inflated main airbags fails based on the contact pressure sensing signals When a minimum preset value is reached, and the value of the contact pressure of the deflated main airbags is not lower than a maximum preset value, the control module will output a bottoming warning notification through the output unit. The air cushion system for medical care according to any one of claims 23 to 27, wherein the output unit includes a display and a speaker, which displays the notification from the control module on the display and causes the speaker to emit a warning sound. The air cushion system for medical care according to any one of claim 23 to 27, wherein the output unit includes a wireless transmission module, and the wireless transmission module transmits a notification from the control module to a mobile device or a A cloud server, and the cloud server can be connected to a mobile device or a monitor, so that the mobile device or the monitor can receive notifications through the cloud server and remotely monitor the air cushion system for medical care.

Images