TWM587519U - Air cushion device and air cushion system for medical care - 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 transition unit. The sensing unit is provided on a supporting surface corresponding to the main airbag and has a conductive circuit pattern and a plurality of conductive blocks. The conductive circuit pattern forms a plurality of supporting surfaces distributed on the main airbag. A conductive block is arranged at the sensing point to connect the positive and negative leads of the corresponding sensing point, and when the pressure is applied, the corresponding sensing point is conducted and the impedance changes with different pressures. The transfer 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 the measured sensing signals and control the inflation and deflation of the air cushion module.

Description

Air cushion device and air cushion system for medical care

The present 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.

In general, patients who are bedridden for a long time cannot move their bodies voluntarily, and pressure ulcers are prone to be caused by the muscles touching the bed surface for a long time and the pressure of the body weight. Therefore, caregivers must frequently assist patients to turn the body to avoid pressure ulcers.

In order to reduce the burden on caregivers, there is an existing air bed that utilizes airbags that can be alternately inflated and deflated to release the pressure of muscles in various parts of the patient's body in turn. The principle is to arrange multiple tubular airbags side by side to form a mattress size. Two or three sets of adjacent airbags are used, and the airbags of the same group take turns to deflate and inflate. Take two groups as an example. When one of the airbags is inflated, the other airbag is deflated, so that 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 the pressure of the patient's muscles, and then deflated The airbag inflates and deflates the inflated airbag, so alternately inflating and deflating can enable the patient's body muscles to release pressure in turn, so as to reduce the risk of pressure ulcers.

However, due to the different body shapes and weights of various patients, existing air mattresses cannot ensure that the pressure of the airbag is sufficient to support the patient during use. When the pressure of the airbag is too low, the patient's body will be pressed on all the airbags. , Even if some of the airbags are flat, 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 effect of releasing the pressure of the muscles is not a problem to be solved.

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

Therefore, in some embodiments, the novel air cushion device for medical care includes an air cushion module, a pressure sensing system, and a host. The air cushion module includes a plurality of tubular main airbags that can be alternately inflated and deflated. Each main airbag extends in a lateral direction and has a supporting surface facing upward. The main airbags are arranged side by side in a longitudinal direction to jointly form an air cushion main 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 transmission circuit capable of conducting electricity. The sensing modules are respectively disposed on at least a part of the number of main airbags. Each sensing module includes a sensing unit and a transfer unit. The sensing unit is provided on a supporting surface corresponding to the main airbag and has a conductive structure. 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 support surface and arranged in the lateral direction, and each of the sensing points is respectively used as a positive electrode and The negative electrode is composed of the conductive blocks, and the conductive blocks are respectively arranged at the sensing points to connect the positive and negative leads of the corresponding sensing points, and when the pressure is applied, the positive and negative leads of the corresponding sensing points are electrically conducted and are subjected to 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 a sensing signal measured by the sensing unit to the bus transmission module. The host is 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 signals measured by the pressure sensing system and control the air cushion. 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. 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 signals received from the first switching circuit are integrated and then transmitted to the second switching circuit. To the circuit, so that the number of wires of the second transfer circuit is less than that of the first transfer 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 fixed in combination with the corresponding main airbag in a thermocompression bonding manner.

In some embodiments, the sensing unit is detachably combined with the corresponding main airbag and fixed.

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 near the adapter unit, and one of the wires is a common wire, and the remaining wires are independent wires. Each of the independent wires also has a terminal at the end. The first electrode portion and the common wire have a plurality of second electrode portions that are respectively matched with the first electrode portions so that each second electrode portion and a corresponding first electrode portion together form one of the sensing points.

In some embodiments, the wires are printed by conductive silver paste as a whole, and the first electrode portions and the second electrode portions are printed on the surface of the conductive silver paste and covered with a conductive ink having 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 covered by the base layer, and a layer of low conductivity material located on the surface layer and covered by the high conductivity material. The conductivity of the low conductivity material is lower than The high conductivity material.

In some embodiments, the high conductivity material is silver paste, and the low conductivity material is a 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, and the positions of the hollow areas are positive to the sensing points. The negative lead corresponds to adjust the contact area of the conductive layer with the corresponding positive and negative lead through the hollowed-out 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 yarn.

In some implementation forms, the air cushion module further includes a plurality of tubular head airbags and three air delivery pipes, the head airbags are side by side in the longitudinal direction and are located on one side of the main airbags, and the air delivery pipes Each of the roads extends in the longitudinal direction, and one of the first gas pipeline and one of the second gas pipeline alternately connects the main airbags to alternately supply and deflate the main airbags, and one of the third airpipes The head airbags are connected to supply air to the head airbags.

In some embodiments, the third gas transmission 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 gas pipelines provided in the third gas transmission pipeline. An external control valve of the check valve and two tubular expansion airbags located on both sides of the main airbags in the transverse direction, the two expansion airbags each extending in the longitudinal direction and connected with the external control valve to be controlled by the external control valve Gas supply.

In some embodiments, the external control valve has a main body, a microprocessor, and a shunt control air valve. The main body has three ventilation pipe portions for connecting one of the third gas transmission lines to one The check valve and the two expansion airbags, the microprocessor is disposed 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 disposed on the body and It is electrically connected to the microprocessor to open or close the gas flow path connecting the two expansion airbags under the control of the microprocessor.

Furthermore, in some embodiments, the new air cushion system for medical care 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 tubular main airbags which are inflated and deflated side by side, and each main airbag has a supporting surface facing upward. The bus transmission module is disposed 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. 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, a gas 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; 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.

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 in the main airbags and deflate another part of the main airbags spaced in the main airbags, and senses the signal according to the gas pressure And the contact pressure sensing signals, a control signal is generated 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 can be maintained. Maintained at this 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 did not receive a shutdown signal, and the control module determines that the pre- 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 is switched to deflate the main airbags being inflated and deflate. These main airbags are inflated.

In some implementation aspects, during the operation of the host, the control module will continuously determine whether the user is bedridden according to the magnitude of the contact pressure corresponding to the contact pressure sensing signal, and if not, Then the user is judged to leave the bed and recorded; if so, the control module further analyzes the numerical change and distribution range of the contact pressure to judge the user's bed posture 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 posture according to the numerical change and distribution range of the contact pressure. When the time reaches a preset value, the control module outputs a pressure ulcer risk warning notification through the output unit.

In some implementation aspects, the control module analyzes the numerical changes and distribution ranges of the contact pressures, and determines that the user is in a sitting posture, and the control module controls the air supply module to adjust the inflation pressure for use. The sitting position is comfortable, and a sitting-up notification is output through the output unit.

In some implementation aspects, the control module determines that the user is in a sitting posture and continuously determines the position of the center of gravity of the contact pressure toward the bedside and approaches a critical value of leaving the bed based on the numerical change and distribution range of the contact pressure. At that time, the control module outputs a warning of leaving the bed through the output unit.

In some implementation aspects, after the control module sends out the warning of leaving the bed, the control module continuously judges that the changes in the value of the contact pressure are less than one after leaving the bed after the change in the value of the contact pressure and the distribution range. When the threshold value is reached, the control module will output a notification of leaving the bed through the output unit.

In some implementations, in the alternate mode, the control module continuously judges that the value of the contact pressure of the inflated main airbag fails to reach a minimum preset value according to the contact pressure sensing signals. And when the value of the contact pressure of the deflated main airbags is not lower than a highest preset value, the control module will output a bottom warning alarm through the output unit.

In some embodiments, the output unit includes a display and a speaker, which displays a 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, and the wireless transmission module sends a notification 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 notification through the cloud server and remotely monitor the air cushion system for medical care.

The new model has at least the following effects: the pressure sensing system is provided in at least a part of the number of main airbag sensing modules, and each sensing module distributes multiple sensing points in the corresponding main airbag, so that the patient can be monitored in real time The contact condition with the main airbag ensures that the muscles of each part of the patient can release pressure regularly, which effectively reduces the risk of pressure ulcers.

Before the new model is described in detail, it should be noted that in the following description, similar elements are represented by the same number.

Referring to FIG. 1 and FIG. 2, a first embodiment of the new type of air cushion device for medical care 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 a support surface 111 facing upward. The main airbags 11 are arranged side by side in a longitudinal direction D2. Together form 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 delivery lines 13, 14, 15, and the head airbags 12 are side by side in the longitudinal direction D2 and are located on the main airbags. On one side of 11, the gas transmission lines 13, 14, 15 each extend in the longitudinal direction D2, and a first gas transmission line 13 and a second gas transmission line 14 are alternately connected for the main airbags 11 to The main airbags 11 are alternately supplied and deflated, and one of the third air delivery lines 15 is connected to 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 located at positions corresponding to both ends of the main airbags 11, and the third gas pipeline 15 is located at the first gas pipeline 13 and At the middle of the second gas pipeline 14, each main airbag 11 is provided with an air nozzle 112, and one end of the gas nozzle 112 is close to the main airbag 11 to connect the first gas pipeline 13 or the second gas pipeline 14, as shown in FIG. 1. In the direction shown from the right, the air nozzle 112 of the main airbag 11 at the singular position is connected to the first gas pipeline 13 and the air nozzle 112 of the main airbag 11 at the even position is connected to the second gas pipeline 14. The main airbags 11 located in the singular position are controlled to be inflated or deflated together, and the main airbags 11 located in the even position are controlled to be inflated or deflated together. When the main airbags 11 in the singular position are inflated together, the main airbags 11 in the even position are deflated together. Conversely, when the main airbags 11 in the even position are inflated together, the The main airbags 11 are deflated together, thereby causing adjacent main airbags 11 to alternately inflate and deflate. In addition, in this embodiment, two head airbags 12 are taken as an example, and each head airbag 12 is also provided with an air nozzle 121, and the air nozzle 121 of the head airbag 12 is located at an intermediate position to communicate with the third gas 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 transverse 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 module 5, but all the main airbags 11 may be provided according to requirements. All are equipped with a sensing module 5. 3 and 4, each sensing module 5 includes a sensing unit 51 and an adapter unit 52. The sensing unit 51 is disposed 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 wires 512a, 512b to form a plurality of sensing points 512c distributed on the support surface 111 and arranged in the lateral direction D1. Each of the sensing points 512c is respectively used as a positive electrode and a positive electrode. The negative conductors 512a and 512b are formed, and the conductive blocks 513 are respectively provided at the sensing points 512c to connect the positive and negative conductors 512a and 512b corresponding to the sensing points 512c and make the positives of the corresponding sensing points 512c under pressure. The negative leads 512a and 512b are electrically connected and generate impedance changes with different pressures. Specifically, when the pressure at the sensing point 512c is increased, the contact force between the conductive block 513 and the positive and negative lead wires 512a and 512b is increased, so that the conductive substance in the conductive block 513 is in contact with the positive and negative lead wires 512a and 512b. The positive and negative lead wires 512a and 512b are conducted, and when the pressure on the sensing point 512c is greater, more conductive substances in the conductive block 513 are conducted with the positive and negative lead wires 512a and 512b to reduce the impedance. The pressure condition at the sensing point 512c. In this embodiment, the sensing points 512c are distributed at different positions of the support surface 111 of the main airbag 11 in the lateral direction D1, and can detect whether the patient is in contact with the main airbag 11 and the pressure generated during the contact, thereby monitoring. Whether the muscle pressure of the patient is really released.

In this embodiment, the sensing unit 51 further has a flexible substrate 511, for example, a film made of a polymer material such as thermoplastic polyurethane (TPU), polyurethane (PU), and the like, and the conductive circuit pattern 512 is formed on the printed circuit. On the surface of the flexible substrate 511, the wires 512a, 512b of the conductive circuit pattern 512 each have a connection end 512d near the adapter unit 52, and one of the wires is a common wire 512a, and the remaining wires are independent wires 512b. For the positive electrode, the independent lead 512b is the negative electrode. On the other hand, if the common lead 512a is set to the negative electrode, the independent lead 512b is the 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 matching the first electrode portions 512e so that each of the second electrode portions 512f and The corresponding first electrode portions 512e collectively form one of the sensing points 512c. Understandably, in a different embodiment, a plurality of second electrode portions 512f may also be formed on different wires. The wires 512a and 512b are printed by 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 and covered with a conductive ink having a conductivity lower than that of the conductive silver paste, such as The carbon-based conductive ink reduces 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 high-conductivity coefficient material 5131 covered on the base layer 513a, and a layer on the surface layer. The low-conductivity material 5132 covered with the high-conductivity material 5131 has a lower conductivity than the high-conductivity material 5131. The base layer 513a can be, for example, a film made of a polymer material such as polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), polyurethane (PU), etc. The high-conductivity coefficient material 5131 is a silver paste, and the low-conductivity material 5132 is a conductive ink and a carbon-based conductive ink is preferred. The conductive block 513 can be bonded to the flexible substrate 511 by thermocompression or adhesively fixed through the base layer 513a. The conductive layer 513b is formed on the base layer 513a by printing, and the impedance of the low-conductivity coefficient material 5132 can be adjusted according to use requirements. In addition to protecting the silver paste from being oxidized, the low-conductivity material 5132 is also used to prevent 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. Status cannot be sensed. In other words, due to the low conductivity of the low-conductivity coefficient material 5132, the impedance is large when the sensing point 512c is not stressed, so that the first electrode portion 512e and the second electrode portion 512f are in a non-conducting state. When pressure is applied, the high-conductivity-coefficient material 5131 will participate in conduction to reduce the impedance. The greater the pressure at the sensing point 512c, the more high-conductivity-coefficient material 5131 will participate in conduction to reduce the impedance. Similarly, the low-conductivity coefficient material 5132 is located on the surface to be in contact with the first electrode portion 512e and the second electrode portion 512f to reduce the conductivity sensitivity. This can increase the action range of the sensing circuit and increase the information available for analysis.

In a modified embodiment, referring to FIG. 5 and FIG. 6, the conductive layer 513 b of the conductive block 513 may also be formed of a single material, for example, formed by printing conductive ink on the base layer 513 a, and the conductive layer 513 b of each conductive block 513 and An insulating layer 513c may also be provided between the corresponding sensing points 512c, and the insulating layer 513c has a plurality of hollow areas 5131, and the positions of the hollow areas 5131 and the positive and negative lead wires 512a, 512b of the sensing points 512c ( That is, the first electrode portion 512e corresponds to the second electrode portion 512f), so that the contact areas of the conductive layer 513b and the corresponding positive and negative lead wires 512a, 512b are adjusted by the hollow regions 5131. That is, the shape, size, and number of the hollowed-out areas 5131 can be changed and adjusted. For example, FIG. 7 shows another layout of the hollowed-out areas 5131. By adjusting the thickness of the insulating layer 513c and the shape, size, and number of the hollow areas 5131, the conductive layer 513b and the positive and negative lead wires 512a and 512b (that is, the first electrode portion 512e and the second The contact area of the electrode portion 512f), and by reducing the contact area of the conductive layer 513b and the positive and negative lead wires 512a, 512b, the conductive sensitivity can be reduced, and the action interval of the sensing circuit can be increased to increase the information that can be analyzed. The insulating layer 513c may be a part of the conductive block 513. For example, the insulating layer 513c is formed on the surface of the conductive layer 513b by printing, which is convenient in manufacturing. However, the insulating layer 513c can also be manufactured separately from the conductive block 513. A conductive block 513 is provided after an insulating layer 513c is provided on the surface of the pattern 512. In other variations, the conductive block 513 can also be made of conductive rubber, or a fabric made of conductive yarn, and both conductive rubber and fabric made of conductive yarn can increase conductivity due to compression (reduce impedance ).

Referring to FIG. 1 to FIG. 4 again, the sensing unit 51 further has a protective film 514 to cover the conductive circuit pattern 512 and the conductive blocks 513, thereby protecting the conductive circuit pattern 512 and the conductive blocks 513. The sensing unit 51 may be combined and fixed with the corresponding main airbag 11 in a thermocompression bonding manner or may be detachably combined with the corresponding main airbag 11 according to usage requirements, for example, it may be detached and fixed by double-sided adhesive bonding. When the sensing unit 51 is combined with the corresponding main airbag 11, the side of the flexible substrate 511 on which the conductive circuit pattern 512 is not provided may face the main airbag 11, or the conductive circuit pattern 512 is provided on the flexible substrate 511. The side facing the main airbag 11 is not limited. In a modified embodiment, the conductive circuit pattern 512 can also be printed directly 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 signals measured by the sensing unit 51 to the bus transmission module 4. In this embodiment, the switching unit 52 is a flexible circuit board, and has a first switching circuit 521, a second switching circuit 522, and a microprocessor 523. The first transfer circuit 521 is electrically connected to the sensing unit 51, the second transfer circuit 522 is electrically connected to the bus transmission module 4, and the microprocessor 523 is electrically connected to the first transfer circuit 521 and the first transfer circuit 521. The two switching circuits 522 and the sensing signals received from the first switching circuit 521 are transmitted 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 transfer circuit 521 has a total of seven lines to match the number of the conductive lines 512a and 512b of the conductive line pattern 512, and the conductive line pattern 512 forms six sensing points 512c with the seven conductive lines 512a and 512b. The number of wires 512a, 512b of the conductive circuit pattern 512 can be increased or decreased according to the number of required sensing points 512c. The number of lines of the first transfer circuit 521 is adjusted in accordance with the number of wires 512a, 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 from which the sensing signal originates, and integrates the signal through two of the second switching circuits 522. Transmission lines to the bus transmission module 4. In this embodiment, the second switching circuit 522 has a total of four lines, two of which transmit signals and the other two transmit power, but in a variant embodiment, the second switching circuit 522 may also have only two lines, so that Power and signal are transmitted on the same line. In other words, the number of lines of the first transfer circuit 521 needs to be adjusted in accordance with the number of wires 512a, 512b of the conductive line pattern 512, and the signal received from the sensing unit 51 is processed by the microprocessor 523 and then transmitted to the second transfer circuit 522. That is, the second switching circuit 522 only needs two lines to transmit the signals processed by the microprocessor 523, that is, when the number of the wires 512a, 512b of the conductive circuit pattern 512 is increased to increase the number of the sensing points 512c, the first The two switching circuits 522 still only need two lines or four lines, so that the transmission circuit 41 of the bus transmission module 4 and the second switching circuit 522 only need 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 for the number of wires 512 a and 512 b corresponding to the conductive line pattern 512. In this embodiment, the transmission circuit 41 of the bus transmission module 4 cooperates with the second transfer circuit 522 to have four lines for the one-to-one electrical connection between the line of the second transfer circuit 522 and the line of the transmission circuit 41.

Referring also to FIG. 8, the host 3 is connected to the air cushion module 1 and the bus transmission module 4 of the pressure sensing system 2, and includes a control module 31 and a gas supply module 32. The control module 31 receives The sensing signal measured by the pressure sensing system 2 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 line, and the like, and the air supply module 32 includes an air pump driving circuit, an air pump, an air shunt 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 an inflation pressure of the gas supply module 32 to generate a gas pressure feeling. The measurement signal is transmitted to the processor of the control module 31. The control panel is used by a caregiver to control the operation of the host 3. The processor is electrically connected to the bus transmission module 4, the control panel, the memory, the power supply line, the gas pressure sensor, and the air pump drive line, and is used to process the received signal and generate control instructions to control the gas 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 patient's contact 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. The processor of the control module 31 can adjust the air pressure of the main airbag 11 correspondingly according to the sensed pressure information, so as to ensure that the muscles of all parts of the patient can be released regularly. Stress, which reduces the risk of pressure ulcers in patients. In addition, in this embodiment, the host 3 also includes an output unit, which includes a wireless transmission module 33. The wireless transmission module 33 can connect the control module 31 and a mobile device (not shown). (Pictured), mobile devices such as mobile phones, tablets, laptops, etc. can be used by caregivers to monitor the patient's use of the air cushion module 1, for example, when the air pressure control fails and the main airbag 11 cannot take turns During the decompression function, a warning message is displayed on the mobile device for the caregiver to check whether the air cushion device is operating normally and provide assistance to the patient in order to avoid the patient's discomfort. In addition, the output unit may further include a display and a speaker, which can display the warning information or the warning notification from the control module 31 on the display and make the speaker emit a warning sound.

Referring to FIG. 9 and FIG. 10, a second embodiment of the air cushion device for a new type of medical care is different from the first embodiment in that in the second embodiment, the third gas transmission pipeline 15 is provided with a plurality of backstops. Valve 151, the air cushion module 1 further includes two external airbag units 16, each external airbag unit 16 includes an external control valve 161 provided in one of the check valves 151 of the third gas pipeline 15, and in the transverse direction D1 Two tubular expansion airbags 162 are located on both sides of the main airbags 11, and the two expansion airbags 162 each extend in the longitudinal direction D2 and are connected to the external control valve 161 to control the air supply by the external control valve 161. The external control valve 161 has a body 161a, a microprocessor 161b, and a shunt control gas valve 161c. The main body 161a has three ventilation tube portions 1611 for connecting one of the check valves 151 and the two expansion airbags 162 provided in the third gas pipeline 15, respectively. The ventilation tube portion 1611 can be connected to the expansion airbag by using a hose, for example. 162 air nozzle (not shown). The microprocessor 161b is disposed 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. The microprocessor 161b can be connected to the bus transmission module through a wire. 4 电 连接。 Electrical connection. The shunt control gas valve 161c is disposed on the main body 161a and is electrically connected to the microprocessor 161b to be controlled by the microprocessor 161b to open or close a gas flow path communicating with the two expansion airbags 162. That is, the shunt control air 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 the needs of use to increase the length of the air cushion module 1 in the lateral direction D1, which is suitable for patients with a large size. 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 may be added, or two or more external airbag units 16 may be added. For example, in the second embodiment, the third gas transmission line 15 is preset with four check valves 151, and only the middle two check valves 151 are connected to the external airbag unit 16 respectively, and are located at both ends of the head and tail of the entire row of main airbags 11 The valve 151 is not connected to the external airbag unit 16.

Furthermore, an embodiment of a method for controlling the inflation and deflation of the air cushion module 1 of the novel air cushion system for medical care is shown in FIG. 11. First, as shown in step S11 in FIG. 11, when the host 3 starts to operate, the control module 31 in the host 3 will detect the gas pressure sensor of the gas pressure of the gas supply module 31 according to the gas pressure sensor. The gas pressure sensing signal returned and the contact pressure sensing signal returned by the sensing points 512c of the sensing modules 5 know that a gas pressure (i.e. 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 air pressure is generated according to the inflation air pressure and the contact pressures. A control signal controls the gas supply module 32 to inflate the main airbags 11 through the first gas pipeline 13 and the second gas 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 that the control signal The air supply module 32 adjusts the inflation pressure output to the first gas transmission line 13 and the second gas transmission line 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 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 so, 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, it returns to step S11 to continuously control the air supply module 32 to inflate the main airbags 11 so that the air pressure of the main airbags 11 is maintained at the target value; if so, then As shown in step S15 in FIG. 11, the control module 31 controls the gas supply module 32 to alternately supply and deflate the main airbags 11 through the first gas pipeline 13 and the second gas pipeline 14, for example, by the The first gas pipeline 13 inflates the main airbag 11 located in the singular position, and the second gas pipeline 14 deflates the main airbag 11 located in the even position; then, as shown in step S16 of FIG. 11, the control module 31 Continuously returns the gas pressure according to the gas pressure sensor Such sense signal sensing module 5 and return the contact pressure sense signal, and that the gas pressure inside the external those primary airbag 11 is inflated the contact pressure.

Next, as shown in step S17 in FIG. 11, the control module 31 generates a control signal to control the air supply module 32 to adjust the inflation pressure according to the aforesaid inflation pressure and the contact pressure. Specifically, the control module 31 generates the control signal according to the difference between the inflation pressure and the first target value, and controls the gas supply module 32 to appropriately adjust the inflation pressure so that the inflation pressure can be changed in the alternate mode. Maintained at this first target value.

Then, as shown in step S18 in FIG. 1, the control module 31 judges whether the supplied main airbags 11 have been supplied with air again (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 pressure and the contact pressure outside the main airbags, and repeat step S17; if yes, then as shown in step S19 of FIG. 11, the The control module 31 determines whether a shutdown signal is received. If so, the control module 31 will stop operating. If not, as shown in step S20 of FIG. 1, the control module 31 determines whether a preset alternate time is reached, such as 15 Minutes, if not, go back to step S16, continue to detect the inflation pressure and the contact pressure outside the main airbag 11, and repeat step S17, if yes, go to step S21 of FIG. 11 to generate an alternate control signal and Send the alternating control signal to the gas supply module 32, and return to step S15 to change the gas supply module 32 to, for example, deflate the main airbag 11 located in the singular position by the first gas transmission line 13 and be deflated by the 14 pairs of second gas pipelines are even-numbered The main airbag 11 inflated. Thereby, the air pressure in the main airbags 11 can be maintained at a target value during the process of alternately inflating and deflating. And the control module 31 also records alternation events, such as the time point of the alternation and the current gas pressure inside the main airbags 11 and the external contact pressure, etc., for subsequent analysis. The alternation mode is useful for improving the user's bed. Application of questions, etc.

In addition, 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 by the sensing point 512c of each sensing module 5, Determine whether the user (patient) is bedridden or not and record the bedridden posture. First, as shown in step S21 in FIG. 12, the control module 31 continuously receives the contact pressure sensing signal returned from each sensing point 512c, and learns 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 determine whether the user is lying in bed according to the magnitude of the contact pressure of the main airbag 11, such as, but not limited to, every 1 minute. If yes, that is, the values of the contact pressures of some of the main airbags 11 are significantly higher than those of the other main airbags 11, for example, the difference between the pressure values of the two is higher than a first preset value, the control The module 31 determines that the user has a bed.

Then, as shown in step S23 in FIG. 12, the control module 31 further analyzes the numerical changes of the contact pressures and the distribution ranges of the contact pressures corresponding to the contact pressure sensing signals returned by the sensing points 512 c to determine The bed posture of the user is lying on his back (lying on his back), lying on his right side, lying on his left side, or sitting up. For example, when the area with high 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 high, When the area is mainly distributed on the right side of the air bed, the control module 31 judges that the user is in the right lying posture; when the area with high contact pressure is mainly located on the left side of the air bed, the control module 31 determines The user is in a left lying position. Then, as shown in step S24 of FIG. 12, the control module 31 records the result of the judgment, including but not limited to the posture of lying in bed and judging the current time.

In this way, the control module 31 can monitor a duration for which the user maintains the same bed posture, and judge that the duration reaches a preset value, for example, when two hours, it is determined that there is a risk of pressure ulcers. Therefore, the control module 31 The group 31 will output a pressure ulcer risk warning notification through the output unit in time for the pressure ulcer risk.

In addition, the control module 31 analyzes the change and distribution range of the contact pressure corresponding to the contact pressure sensing signal returned by the sensing points 512c, and controls the user when the user is in a sitting posture. The air supply module 32 increases the inflation pressure, that is, increases the internal pressure of the inflated main airbags 11 to make the user sit more comfortable. At the same time, the control module 31 outputs a sit-up through the output unit. Notice.

In step S22, if the control module 31 determines that the user is not bedridden (that is, leaves the bed) according to the contact pressure corresponding to the contact pressure sensing signal transmitted back from each sensing point 512c, for example, all the sensors The value of the contact pressure corresponding to the contact pressure sensing signal returned by the measurement point 512c is not large and is less than a second preset value, the control module 31 determines that the user is out of bed, and executes step S24 to record The result of the judgment, such as recording the current time of judgment (that is, the time of leaving the bed). At the same time, the control module 31 also outputs a notification of leaving the bed through the output unit.

Alternatively, after determining that the user is in a sitting posture, the control module 31 will continue to judge when the position of the center of gravity of the contact pressure moves toward the bedside and approaches 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 leave the bed, the control module 31 outputs a warning of leaving the bed through the output unit. In addition, after the control module 31 sends out the bed warning notice, it will continue to judge that the value of the contact pressure is less than a critical value according to the change and distribution range of the contact pressure, and determine that the user has left the bed. Then, the control module 31 outputs a notification of having left the bed through the output unit.

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

In addition, in the alternating mode, when the control module 31 finds that the air pressure in the main airbags 11 cannot reach the target value during the process of alternate inflation and deflation, for example, the control module 31 will continuously A test signal to determine 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 that the When the value of the contact pressure does not fall below a highest 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 output unit described above, in addition to outputting the pressure ulcer risk warning notification, the bed departure warning notification, the bed departure notification, and the bottom warning notification, is output to the display and causes the speaker to emit a corresponding warning sound. The output unit will also send (transmit) 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. Module 31, which remotely monitors the air cushion module 1; or the wireless transmission module 33 can also send the above-mentioned 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 above-mentioned notification messages from the cloud server, and sends a control signal 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 part of the number of sensing modules 5 of the main airbag 11 and each sensing module 5 distributes a plurality of sensing points 512c in the corresponding main airbag 11, and The contact condition between the patient and the main airbag 11 can be monitored in real time to ensure that the muscles of various parts of the patient can release pressure regularly, effectively reducing the risk of pressure ulcers.

However, the above are only examples of the new model. When the scope of implementation of the new model cannot be limited by this, any simple equivalent changes and modifications made in accordance with the scope of the patent application of the new model and the content of the patent specification are still Within the scope of this new patent.

1‧‧‧Air cushion module

11‧‧‧ main airbag

111‧‧‧ support surface

112‧‧‧ Gas nozzle

12‧‧‧Head airbag

121‧‧‧ Gas nozzle

13‧‧‧The first gas pipeline

14‧‧‧Second Gas Pipeline

15‧‧‧ the third gas pipeline

151‧‧‧Check valve

16‧‧‧External airbag unit

161‧‧‧External control valve

161a‧‧‧Body

1611‧‧‧Snorkel Department

161b‧‧‧Microprocessor

161c‧‧‧ Diverting control valve

162‧‧‧Expansion airbag

2‧‧‧Pressure Sensing System

3‧‧‧host

31‧‧‧Control Module

32‧‧‧Air Supply Module

33‧‧‧Wireless Transmission Module

4‧‧‧Convergence transmission module

41‧‧‧Transmission Circuit

5‧‧‧ Sensor Module

51‧‧‧sensing unit

511‧‧‧flexible substrate

512‧‧‧ conductive circuit pattern

512a‧‧‧common wire

512b‧‧‧ independent wire

512c‧‧‧sensing point

512d‧‧‧connection end

512e‧‧‧First electrode section

512f‧‧‧Second electrode section

513‧‧‧Conductive block

513a‧‧‧ Grassroots

513b‧‧‧ conductive layer

5131‧‧‧High conductivity material

5132‧‧‧Low conductivity material

513c‧‧‧Insulation

5131‧‧‧Hollow area

514‧‧‧protective film

52‧‧‧ transfer unit

521‧‧‧First Transfer Circuit

522‧‧‧Second transfer circuit

523‧‧‧Microprocessor

D1‧‧‧Horizontal

D2‧‧‧Vertical

S11 ~ S21‧‧‧‧step

Steps S21 ~ S25‧‧‧‧

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

Claims (29)

An air cushion device for medical care includes:
An air cushion module includes a plurality of tubular main airbags that can be alternately inflated and deflated. Each main airbag extends in a lateral direction and has a support surface facing upward. The main airbags are arranged side by side in a longitudinal direction to form an air cushion main structure together.
A pressure sensing system includes a bus transmission module, which 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 and a plurality of sensing modules, respectively. At least a part of the number of main airbags, each sensing module includes a sensing unit and an adapter unit. The sensing unit is provided on the supporting surface of the main airbag and has a conductive circuit pattern and a plurality of conductive blocks. The conductive circuit pattern includes a plurality of conductive lines to form a plurality of sensing points distributed on the supporting surface and arranged in the lateral direction, and each sensing point is composed of two of the conductive lines serving as a positive electrode and a negative electrode, respectively. The blocks are respectively arranged at the sensing points to connect the positive and negative leads of the corresponding sensing points, and when the pressure is applied, the positive and negative leads of the corresponding sensing points are electrically connected and the impedance changes with different pressures. The transfer unit Electrically connecting 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, connecting the air cushion module and the bus transmission of the pressure sensing system Module And comprising a control module and a supply module, to receive the pressure measured by the sensing system and controls the sensing signal and deflated inflatable cushion module. 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 is electrically connected to the sensing unit. Connected, the second transfer circuit is electrically connected to the bus transmission module, the microprocessor is electrically connected to the first transfer circuit and the second transfer circuit and the sensing signals received from the first transfer circuit are integrated Transmitting 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. The air cushion device for medical care according to claim 3, wherein the sensing unit is fixed in combination with a corresponding main airbag in a thermocompression bonding manner. The air cushion device for medical care according to claim 3, wherein the sensing unit is detachably fixed to the corresponding main airbag. 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 near the adapter unit, and one of the wires is a common wire, and the remaining wires are independent wires. The independent wires Each also has a first electrode portion at the end, and the common wire has a plurality of second electrode portions that cooperate with the first electrode portions, respectively, so that each of the second electrode portions 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 printed by conductive silver paste as a whole, and the first electrode portions and the second electrode portions are printed on the surface of the conductive silver paste to cover 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 high-conductivity material covered on the base layer and a low-conductivity material on the surface layer and covered with 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 of the hollow areas are distributed. Corresponding to the positive and negative leads of the sensing point, the contact area between the conductive layer and the corresponding positive and negative leads is adjusted by the hollowed-out 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 yarn. 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 gas pipelines, and the head airbags are arranged side by side in the longitudinal direction and are located in the main airbags. On one side, the gas pipelines each extend in the longitudinal direction, and one of the first gas pipelines and one of the second gas pipelines are alternately connected for the main airbags to alternately supply and deflate the main airbags, One of the third gas transmission lines connects 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 transmission 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 a third airbag unit. An external control valve of one of the check valves of the gas pipeline and two tubular expansion airbags 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 Supply air is controlled by this external control valve. The air-cushion device for medical care according to claim 17, wherein the external control valve has a body, a microprocessor, and a shunt control air valve, and the body has three ventilation pipe parts for connecting to the first One of the check valves of the three gas pipelines and the two expansion airbags, the microprocessor is located 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 An air valve is disposed on the body and is electrically connected to the microprocessor to open or close a gas flow path communicating with the two expansion airbags under the control of the microprocessor. An air cushion system for medical care includes:
An air cushion module comprising a plurality of side-by-side inflatable and deflated tubular main airbags, each main airbag having a support surface facing upwards;
A bus transmission module, which is 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 disposed in at least a part of the main airbags of the air cushion module. Each sensing module can sense the airbag applied to the corresponding main airbag. A contact pressure on the support 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 to the bus transmission module to receive Such contact pressure sensing signals;
An air supply module controlled by the control module to inflate and deflate the main airbags;
A gas pressure sensor, which is electrically connected to the control module and detects an inflation 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 the control module determines the air cushion 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. 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 spaced out of the main airbags and deflate the other part of the main airbags spaced out of the main airbags, and according to The gas pressure sensing signal and the contact pressure sensing signals generate a control signal to control the gas 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 value of the pressure can be maintained at the second target value. The air cushion system for medical care according to claim 20, wherein the control module judges that the main airbags that have been inflated have completed inflation and the main airbags that have been deflated have completed deflation and have not received a shutdown signal, and the control When the module determines that a preset alternation time has been reached, the control module generates an alternation control signal and sends the alternation control signal to the gas supply module, so that the gas supply module is switched to the mains that are inflated. The airbag is deflated and inflates the main airbags. The air cushion system for medical care according to claim 20, wherein during the operation of the host, the control module continuously judges the user based on the numerical values of the contact pressures corresponding to the contact pressure sensing signals. Whether the bed is in bed, if not, it is judged that the user is out of bed and recorded; if so, the control module further analyzes the numerical change and distribution range of these contact pressures to determine the user's bed posture and record it. The air cushion system for medical care as described in claim 22, wherein the host further includes an output unit electrically connected to the control module, and the control module judges the user to maintain 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 outputs a pressure ulcer risk warning notification through the output unit. The air cushion system for medical care according to claim 23, wherein the control module analyzes the numerical changes and distribution ranges of the contact pressures, and determines that the user is in a sitting posture, the control module controls the adjustment of the air supply module The inflation pressure allows the user to sit comfortably, and outputs a sit-up notification through the output unit. The air cushion system for medical care according to claim 24, wherein the control module judges the user to be in a sitting posture and continuously moves the position of the center of gravity of the contact pressure to the bedside according to the numerical change and distribution range of the contact pressure When it is close to a critical value of leaving the bed, the control module outputs a warning of leaving the bed through the output unit. The air cushion system for medical care as described in claim 25, wherein after the control module issues the warning of leaving the bed, the control module will continuously judge the value of the contact pressure based on the change and distribution range of the contact pressure values When the changes are all less than a critical value after leaving the bed, the control module outputs a notification of having left the bed through the output unit. The air-cushion system for medical care according to claim 23, wherein in the alternating mode, the control module continuously judges that the value of the contact pressure of the inflated main airbag fails according to 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 outputs a bottom warning alarm 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 a notification from the control module on the display and causes the speaker to emit a warning sound. According to any one of claims 23 to 27, the air cushion system for medical care, 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 airbag system for medical care.