JP7001542B2 - Mattress device - Google Patents

Description

The present invention relates to a mattress device.

Various proposals have been made for mattresses to improve the comfort and safety of users. For example, in the mattress described in Patent Document 1, by inserting an airbag that supports the back and the waist between the air cells above and below the mattress, it is possible to lift up a part of the body with a small volume without deteriorating the sleeping comfort.

Further, in the mattress described in Patent Document 2, the mattress is divided into a plurality of air cell groups in the longitudinal direction, and the pressure on the back and the thigh is increased to stably support the buttocks of a person and increase the thickness of the mattress. It is supposed to be able to efficiently disperse body pressure while suppressing it.

Japanese Unexamined Patent Publication No. 2007-082861 Japanese Unexamined Patent Publication No. 2011-160892

The thicker the mattress, the more the user can sink, increasing the contact area between the mattress and the body and reducing the pressure on the body.

However, if the thickness of the mattress is increased, the relative height of the bed fence to the mattress is lost, and there is a problem that the risk of falling over the fence (side rail) on the side of the bed increases.

Further, in the mattress described in Patent Document 1, if an airbag is inserted under the back or waist, there is a problem that the size of the airbag does not fit due to the physique of the bed user.

In the mattress described in Patent Document 2, by increasing the pressure on the back and thigh, the thickness of the mattress can be suppressed while the buttocks can be kept at a low pressure and the contact area can be increased, but the contact area is mainly in the longitudinal direction of the mattress. However, there was a problem that the contact area and the sense of stability in the lateral direction could not be increased.

In addition, in order to prevent the patient from falling and to stabilize the posture, a method of arranging a support member on the mattress can be considered. However, the bed device performs various operations such as a back-raising operation, a knee-raising operation, and a leg-lowering operation, and does not always require support.

Specifically, the patient may be displaced during use, the effort may be used for positioning (inserting a pillow between the patient's body and the mat), the same positioning may not be possible every time, and everyone may have the same positioning. There was a problem that it did not become. Furthermore, when supporting a patient using pillows, there are problems that the number of pillows is insufficient for the patient and the pillows are bulky, so that it is difficult to secure a storage place when not in use.

In view of the above-mentioned problems, it is an object of the present invention to provide a mattress device capable of realizing a highly safe and convenient bed device by controlling a bed device and a support cell according to a patient's condition. And.

The mattress device of the present invention
A mattress device composed of air cells,
The air cell includes a main cell and a support cell.
The main cells are formed along the lateral direction of the mattress, and are arranged side by side in a plurality of rows along the longitudinal direction of the mattress.
The support cells are formed along the longitudinal direction of the mattress, are arranged on the left and right sides of the user so as to sandwich the user under the main cell, and the length of the support cell in the longitudinal direction is the longitudinal length of the mattress. Formed shorter than the length in the direction,
Further, the air cell control device for controlling the air cell is provided.

Further, the mattress includes a detecting means for detecting the state of the bed device on which the air cell control device is mounted.
When the air cell control device controls the air cell, it is preferable to control the air cell according to the state of the acquired bed device.

Further, the state of the bed device preferably includes at least one of the back-raising angle, the knee-raising angle, and the bed height of the bed device.

Further, it is preferable that the air cell control device controls the main cell and the support cell, respectively.

Further, it is preferable that the air cell control device controls the left and right support cells, respectively.

The mattress device of the present invention detects the back-raising motion or the knee-raising motion of the bed device, and when the back-raising motion or the knee-raising motion of the bed device is detected, air is supplied so that the support cell reaches the set pressure. By doing so, the internal pressure of the support cell will be controlled. Therefore, even if the posture of the patient changes due to the back-raising motion or the knee-raising motion of the bed device, the internal pressure of the support cell is appropriately controlled, and it is possible to maintain an appropriate posture at all times. ..

It is an overall view of the bed device in this embodiment. It is a figure of the bed device in this embodiment. It is a schematic diagram about the operation of the bed device in this embodiment. It is a functional block diagram of the bed apparatus in this embodiment. It is an operation flow of the 1st processing example in this embodiment. It is an operation flow of the 1st processing example in this embodiment. It is an operation flow of the 2nd processing example in this embodiment. It is an operation flow of the 2nd processing example in this embodiment. It is an operation flow of the 3rd processing example in this embodiment. It is an operation flow of the 3rd processing example in this embodiment. It is an operation flow of the 4th processing example in this embodiment. It is an operation flow of the 4th processing example in this embodiment. It is an operation flow of the 5th processing example in this embodiment. It is an operation flow of the 6th processing example in this embodiment.

Subsequently, an embodiment to which the mattress device of the present invention is applied will be described. In this embodiment, the bed device 1 including the mattress device will be described as an example.

[1. overall structure]
The overall configuration of the bed device 1 in the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a view of the bed device 1 as viewed from above. FIG. 2 is a view showing the bed device 1 from the front on the foot side (the air cell control device 20 side in FIG. 1).

In the bed device 1, the mat body 7 is placed on the base 5. Here, the mat body 7 is configured such that a plurality of main cells 12 using air cells are continuously arranged in the longitudinal direction. The mat body 7 is formed by being covered with a cover.

A support cell 10 which is an air cell for supporting the patient P is provided between the mat body 7 and the base 5. The support cell 10 will support the body of patient P.

Here, the bed device 1 is used so that the foot side of the patient P is in the F direction of FIG. 1 and the head side is in the H direction of FIG. Therefore, the right side of the patient is the R direction in FIG. 1, and the left side is the L direction in FIG.

Further, the support cell 10 is composed of a support cell 10R on the right side and a support cell 10L on the left side.

A blow tube is connected to each air cell (support cell 10, main cell 12) from the air cell control device 20. For example, the air cell control device 20 and the support cell 10 are connected by a blower tube 16, and air is supplied and exhausted from a pump provided in the air cell control device 20. Further, the main cell 12 is divided into several cell groups, each of which is connected to the air cell control device 20 by a blower tube (not shown).

Further, the base 5 of the bed device 1 is divided into a plurality of bases, and can perform operations such as a back-raising operation, a knee-raising operation, and a leg-lowering operation. In order to explain the operation, FIG. 3 is shown as a schematic diagram. The base is divided into a base 5a (back bottom), a base 5b (waist bottom), a base 5c (knee bottom), and a base 5d (foot bottom), and the base 5a, the base 5c, and the base 5d are rotatably configured. ing.

Here, in the present embodiment, the angle α at which the base 5a (back bottom) moves is referred to as the back-raising angle, and the angle β at which the base 5c (knee bottom) moves is referred to as the knee-raising angle. Since FIG. 3 is a schematic diagram, for example, the base may be further divided.

Further, the mat body 7, the air cell 10, and the air cell control device 20 may be integrally formed as a mattress device. In this case, the mattress device will be mounted on the base 5. The air cell control device 20 may not be integrally formed, but may be connected to the outside via, for example, an air supply / exhaust pipe.

[2. Function configuration]
Subsequently, the functional configuration of the bed device 1 including the air cell control device 20 will be described. As shown in FIG. 4, the bed device 1 includes a control unit 100, a support cell control unit 110, a main cell control unit 120, a storage unit 130, a pump unit 140, a bed drive unit 145, and bed information acquisition. It includes a unit 150, a patient information acquisition unit 160, an environmental information acquisition unit 170, an operation unit 180, and a notification unit 190.

The control unit 100 is a functional unit for controlling the entire bed device 1. The control unit 100 realizes various functions by reading and executing various programs stored in the storage unit 130, and is configured by, for example, a CPU (Central Process Unit) or the like.

The support cell control unit 110 is a functional unit for controlling and adjusting the internal pressure of the support cell 10. The pump unit 140 is controlled to supply and exhaust air to and from the support cell 10. Further, the main cell control unit 120 is a functional unit for controlling and adjusting the internal pressure of the main cell 12. The pump unit 140 is controlled to supply and exhaust air to each main cell 12. The pump unit 140 is connected to the support cell 10 and the main cell 12 by a blower tube, and when the pump unit 140 operates, air is supplied and exhausted to the support cell 10 and the main cell 12. As a result, the internal pressure of the air cell (support cell 10, main cell 12) is adjusted.

The storage unit 130 is a functional unit that stores various programs and various data necessary for the operation of the bed device 1. The storage unit 130 is composed of, for example, a semiconductor memory, an HDD (Hard Disk Drive), or the like.

Further, the storage unit 130 stores the support cell pressure information 132, the bed information 134, the patient information 136, and the environmental information 138. Each piece of information stores a value acquired by another functional unit or a preset value.

For example, the support cell pressure information 132 stores the internal pressure value when the support cell 10 increases the internal pressure to support the patient. When supporting the patient, the support cell control unit 110 adjusts the internal pressure to the set pressure set in the support cell pressure information. For example, as the set pressure, "4 kPa" is set as the left and right support cells. The set pressures of the left and right support cells may be stored as the same value or may be stored as different values on the left and right. Further, in the case of a configuration having a plurality of support cells, the set pressure for each support cell may be stored.

The bed drive unit 145 is a drive device and a control device for performing a back-raising operation, a knee-raising operation, a leg-lowering operation, and a height (high / low operation) of the bed device 1 with respect to the bed device 1. For example, by using an actuator and driving the actuator, a back-raising operation is realized.

The bed information acquisition unit 150 is a functional unit for acquiring the current bed state and outputting the acquired value as bed information 134 to the storage unit 130. Here, as the bed information 134, in the present embodiment, the back-raising angle, the knee-raising angle, the bed height, and the like of the bed are acquired.

The patient information acquisition unit 160 is a functional unit for acquiring information about the patient and outputting the acquired state as patient information 136 to the storage unit 130. Here, as the patient information 136, in the present embodiment, the contracture information of the patient, the posture of the patient, the center of gravity of the patient, the sleeping state of the patient, and the like are acquired.

The environment information acquisition unit 170 is a functional unit for acquiring an environment in which the bed device 1 is located and outputting the acquired environment as environment information 138 to the storage unit 130. Here, as the environmental information 138, in the present embodiment, the illuminance of the room, the temperature of the room, and the like are acquired.

The operation unit 180 is a functional unit for a user such as a patient or a caregiver, a nurse, or a doctor to give an input instruction in order to perform a predetermined operation. For example, it is composed of a remote control device using a hardware key or a software key, an operation panel provided on the bed device 1, and another terminal such as a smartphone. By operating the operation unit 180, it is possible to perform the back-raising operation and the knee-raising operation of the bed device 1, adjust the internal pressure of the cell, and set the set pressure.

The notification unit 190 is a functional unit for performing various notifications by the user. For example, various notification devices such as a liquid crystal display indicating a state, a buzzer for indicating the position of a patient, and a lamp are assumed.

[3. Processing example]
Subsequently, a processing example of the bed device 1 in the present embodiment will be described.

[3.1 First processing example]
First, a first processing example will be described. The first processing example realizes a processing of increasing the internal pressure by supplying air to the support cell 10 or decreasing the internal pressure by exhausting the air from the support cell 10 according to the back-raising operation of the bed device 1. ..

[3.1.1 Processing when raising the back]
First, the process of raising the back will be described with reference to FIG. When the back-raising operation is detected from the operation unit 180 (step S102), it is confirmed whether or not the back-raising angle has changed by the threshold value or more (step S104). Thereby, for example, if it is possible to support the patient without using the support cell 10, it can be realized that the support cell is not supplied with air.

When the back-raising angle fluctuates by a threshold value or more (that is, when the back-raising bottom above a predetermined threshold value rises) (step S104; Yes), the air supply control of the support cells 10 on both sides is performed (step S106). Then, when the internal pressure of the support cell 10 reaches a predetermined set pressure (step S108; Yes), the supply air of the support cells 10 on both sides is stopped (step S110).

Then, the back-raising angle after the back-raising operation is completed is acquired (step S112), and the main cell control unit 120 controls the main cell according to the back-raising angle (step S114). For example, when the back-raising angle is large (when the back-raising is frequently performed), the internal pressure of the main cell in the buttocks is increased to prevent the patient from bottoming out.

In this process, the back-raising operation and the air supply control of the support cell are operated in parallel, but the back-raising operation is performed or the back-raising operation is completed after the air supply of the support cell is completed first. It may be possible to start supplying air to the support cell later. That is, the process may be such that the back-raising operation is stopped in step S106 and the back-raising operation is restarted after the step S110 is completed.

Further, when the support cell is supplied with air, a process of changing the speed of the back-raising operation may be performed. For example, when the air supply control of the support cell is performed in step S106, it is also possible to perform a process such as slowing down the speed of the back-raising operation.

Further, the main cell control in step S114 is also executed after the back-raising operation of step S112 is completed in FIG. 5, but it may be performed at the same time as, for example, the back-raising operation.

In the above-mentioned processing example, for example, when the support cell 10 is used immediately during the back-raising operation, the threshold value in step S104 may be set to "0".

[3.1.2 Processing when lowering the back]
Next, the processing at the time of the back-down operation will be described. When the back-lowering motion is detected from the operation unit 180 (step S152), it is confirmed whether or not the back-raising angle has changed by the threshold value or more (step S154).

When the back-raising angle fluctuates by a threshold value or more (that is, when the back-raising bottom is lowered by a predetermined threshold value or more) (step S154; Yes), the exhaust control of the support cells 10 on both sides is performed (step S156). Then, when the internal pressure of the support cell 10 reaches the set pressure (step S158; Yes), the exhaust of the support cells 10 on both sides is stopped (step S160). Here, the back raising angle after the back lowering operation is completed is acquired (step S162). Then, the main cell is controlled according to the back-raising angle (step S164).

As a specific example, for example, when the base 5 is flattened (the back raising angle is "0" degrees), the process of setting the internal pressure of the support cell 10 to "0" is executed.

As described in [3.1.1], the back-lowering operation and the support cell operation may be executed in parallel or sequentially. In addition, processing such as changing the operation speed of the back-lowering operation may be performed. Then, these operations may be selectable by the user.

[3.2 Second processing example]
Next, a second processing example will be described. In the second processing example, depending on the knee-raising operation of the bed device 1, the internal pressure is lowered by exhausting from the support cell 10 to eliminate the feeling of oppression, or the internal pressure is increased by supplying air to the support cell 10. Realize the processing to be done.

[3.2.1 Processing when raising the knee]
First, the process of raising the knee will be described with reference to FIG. 7. When the knee-raising motion is detected from the operation unit 180 (step S202), it is confirmed whether or not the knee-raising angle has changed by the threshold value or more (step S204).

When the knee raising angle fluctuates by a threshold value or more (that is, when the knee bottom above a predetermined threshold value rises) (step S204; Yes), the supply / exhaust control of the support cells 10 on both sides is performed (step S206). Here, when the internal pressure of the support cell reaches the set pressure (step S208; Yes), the supply / exhaust of the support cells on both sides is stopped (step S210), and the current knee raising angle is acquired (step S212). Then, the control of the main cell is executed according to the state of the patient P at this time (step S214).

In this process, the knee-raising operation and the air supply / exhaust control of the support cell are operated in parallel, but the knee-raising operation is performed or the back-raising operation is completed after the air supply / exhaust of the support cell is completed first. It may be possible to start supplying air to the support cell later. That is, the knee raising operation may be stopped in step S206, and the knee raising operation may be restarted after the completion of step S210.

Further, a process of changing the speed of the knee raising operation may be performed at the time of supplying and exhausting the support cell. For example, when the supply / exhaust control of the support cell is performed in step S206, it is possible to perform a process such as slowing down the knee raising operation speed.

Further, although the main cell control in step S214 is also executed after the knee raising operation in step S212 is completed in FIG. 7, for example, it may be performed at the same time as the knee raising operation.

In the above-mentioned processing example, for example, when the support cell 10 is used immediately during the knee-raising operation, the threshold value in step S204 may be set to "0".

[3.2.2 Processing when lowering the knee]
Subsequently, the process at the time of the knee lowering motion will be described with reference to FIG. When the knee lowering motion is detected from the operation unit 180 (step S252), it is confirmed whether or not the knee raising angle has changed by the threshold value or more (step S254).

When the knee raising angle fluctuates by a threshold value or more (that is, when the knee bottom is lowered by a predetermined threshold value or more) (step S254; Yes), the supply / exhaust control of the support cell is performed (step S256). Then, when the internal pressure of the support cell 10 reaches the set pressure (step S258; Yes), the supply / exhaust of the support cell 10 is stopped (step S260). Then, the main cell is controlled according to the knee raising angle (step S264).

As described in [3.1.1], the back-lowering operation and the support cell operation may be executed in parallel or sequentially. In addition, processing such as changing the operation speed of the back-lowering operation may be performed. Then, these operations may be selectable by the user.

[3.3 Example of 3rd processing]
Subsequently, a third processing example will be described with reference to FIG. The third processing example realizes processing for adjusting the internal pressure of the support cell 10 according to the height (high / low) of the bed device 1.

First, the bed height is input from the operation unit 180 (step S302). After that, when the height of the bed device 1 changes (step S304; Yes), the exhaust control of the support cells 10 on both sides is performed (step S306). Here, when the internal pressure of the support cell 10 reaches the set pressure (step S308; Yes), the exhaust of the support cells 10 on both sides is stopped (step S310).

After that, the bed state is acquired (step S312), and the internal pressure of the main cell 12 is controlled according to the bed state (step S314). Specifically, when the patient moves at the stage where the height of the bed changes or when the center of gravity changes, control is performed to adjust the internal pressure of the main cell 12 so as to be in a state suitable for the patient.

An embodiment of the third processing example will be described. For example, when a nurse, a doctor, a caregiver, or the like raises the height of the bed so that the patient can easily change his / her position, change diapers, perform treatment, etc., the exhaust of the support cell 10 has priority over the other main cells 12. Will be done. As a result, the bed becomes flat sooner, so that it is possible to provide a bed device that is easy to use for nurses, doctors, caregivers, and the like.

Further, when the height of the bed is lowered in order for the patient to transfer to a wheelchair or the like, the support cell 10 is preferentially exhausted to provide an environment in which the patient can easily transfer. Further, in this case, control may be performed in which only the support cell 10 on the transfer side (for example, the side on which the wheelchair is placed) is exhausted. Specifically, when transferring from the right side of the bed device 1 (patient), the support cell 10L may be left as it is, and control may be performed to exhaust only the support cell 10R.

In the third processing example described above, the state in which the bed device 1 is already supplied with air to the support cell 10 in the normal state (before the processing of the third processing example) has been described. When it is lowered, it may operate so that air is supplied in reverse (FIG. 10). Air is supplied to the support cell 10 in step S352 of FIG. 10, and air supply to the support cell 10 is stopped in step S354. This is because when the patient sits on the end of the bed device 1 (mat body 7) at the time of transfer, a part of the main cell 12 bottoms out. By slightly increasing the internal pressure of the support cell 10, it is possible to prevent bottoming out even if the patient sits at the end of the bed device 1.

[3.4 Example of 4th processing]
Next, a fourth processing example will be described. In the fourth processing example, the body pressure in the bed device 1 (mat body 7), which is one of the patient information, is measured, and the processing is performed based on the body pressure.

[3.4.1 Support cell control according to the patient's posture]
The process of controlling the support cell 10 according to the posture of the patient P will be described with reference to FIG. First, the body pressure of the patient P is measured by the body pressure sensor (step S402). By measuring the body pressure, the posture of the patient P can be determined (step S404). When the posture of the patient P is biased (step S406; Yes), the support cell 10 is controlled (that is, the left and right support cells 10L / 10R are supplied and exhausted).

Specifically, for example, the internal pressure of the support cell 10L / 10R is adjusted while determining the body pressure value so that the body pressure value is equal to or less than a predetermined threshold value, and the posture of the patient P is controlled to be appropriate. In addition, when the posture of the patient P is biased due to hemiplegia, contracture of the lower limbs, etc., the support cell 10 on the side where the body pressure is concentrated is supplied with air and inflated to increase the contact area. , Reduce the body pressure value.

[3.4.2 Patients with or without contracture]
Subsequently, a processing example for controlling the support cell 10 based on the contracture information of the patient stored in the patient information 136 will be described with reference to FIG. First, the body pressure of the patient P is measured by the body pressure sensor (step S452). The posture of the patient P is determined based on the measured body pressure (step S454).

Here, when the contracture information of the patient P is included (stored) in the patient information 136 (step S456; Yes), the set pressures of the left and right support cells are determined according to the posture of the patient. (Step S458). Then, the support cell 10 is controlled so that the set pressure is determined (step S460).

Specifically, based on the contracture information, the support cell 10 on the side where the patient's posture is biased and concentrated is inflated. This makes it possible to increase the contact area between the patient and the cell and reduce the body pressure value.

[3.5 Example of 5th processing]
Subsequently, a fifth processing example will be described with reference to FIG. The fifth processing example may be executed in combination with the above-mentioned processing example, or may be executed independently.

First, the state of patient P is acquired (step S502). Then, the posture (position) of the patient P is determined (step S504), and whether or not the position of the patient P is on the support cell is determined (step S506).

When the position of the patient P is above the support cell 10 (step S506; Yes), a process of suppressing the supply of air from the support cell on the patient side is executed (step S508). That is, when the patient is sleeping in front of the support cell, it is possible to realize a process of not inflating the support cell on the side on which the patient is riding in order to prevent the patient from falling.

In step S508, the notification operation may be performed by the notification unit 190 in addition to suppressing the supply air. By performing the notification operation, the nurse, the doctor, the caregiver, etc. can change the posture of the patient P or shift the position.

[3.6 Example of 6th processing]
Subsequently, a sixth processing example will be described with reference to FIG. The sixth processing example is a processing for controlling the support cell 10 based on the sleep state of the patient P.

First, the body pressure is measured by the body pressure sensor (step S602). Here, it is determined whether or not the patient P is in a sleeping state based on the movement of body pressure (step S604). Then, when it is determined that the patient is sleeping (step S606; Yes), the support cell 10 is controlled. For example, if you are sleeping, you should supply air to prevent falls during sleep. Then, the main cell 12 is controlled according to the patient's condition (step S610).

In the above-mentioned processing example, whether or not the patient P is in a sleeping state is determined by the body pressure sensor, but other means may be used. For example, it may be determined whether or not the person is in a sleeping state based on the environmental information 138 (for example, illuminance, etc.) acquired by the environmental information acquisition unit 170.

Further, in the above-mentioned processing example, the case of the sleeping state is determined, but it is also possible to control the exhaust from the support cell 10 when the state transitions to the awakening state, for example.

[4. Application example]
Of course, each of the above-mentioned processing examples can be operated in combination. For example, the first processing example is used during the back-raising operation, and the second processing example is executed during the knee-raising operation. Then, when raising the back, it is possible to execute the fourth embodiment based on the posture of the patient.

Further, the support cell control unit 110 and the main cell control unit 120 can be operated in cooperation with each other. That is, by adjusting the internal pressure of the main cell 12 based on the internal pressure of the support cell 10, it is possible to provide a comfortable bed device for the patient.

Further, the notification operation may be performed by the notification unit 190 according to the internal pressure of the support cell 10. For example, when there is a risk of falling because the patient P is biased (the internal pressure of one support cell 10L (10R) is higher than that of the other support cell 10R (10L)), the notification operation is performed. Can also be done.

[5. Modification example]
Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and the design and the like within a range not deviating from the gist of the present invention are also within the scope of claims. include.

Further, although the above-described embodiments are collectively described for convenience of explanation, it is a matter of course that the constituent requirements can be selected as needed. For example, in the first processing example, when the bed device that controls the support cell 10 in cooperation with the back-raising operation is provided, the patient information acquisition unit 160 and the environment information acquisition unit 170 are not required, and the patient information 136 and the environment are not required. It is not necessary to store the information 138.

Further, the air cell control device of the present invention only needs to be able to control the support cell 10 and the main cell 12. That is, it is not necessary to directly provide each functional unit, as long as it can be connected to an external device and controlled. That is, the processing example described may be realized by a program. The program may be executed by another device, or may be realized by, for example, a wirelessly connected mobile terminal or a smartphone.

Further, in the above-described embodiment, the mat body is also described as constituting the air mattress, but the mat body may be made of another material. That is, the mat body may be composed of a spring mattress, a urethane mattress, a polyester fiber mattress, a palm mattress, or the like.

1: Bed device 5, 5a, 5b, 5c, 5d: Base 7: Mat body 10, 10L, 10R: Support cell 12: Main cell 14: Pump unit 16: Blower tube 20: Air cell control device 100: Control unit 110: Support cell control unit 120: Main cell control unit 130: Storage unit 132: Support cell pressure information 134: Bed information 136: Patient information 138: Environmental information 140: Pump unit 145: Bed drive unit 150: Bed information acquisition unit 160: Patient Information acquisition unit 170: Environmental information acquisition unit 180: Operation unit 190: Notification unit

Claims (1)

A mattress device that is composed of an air cell and is mounted on a bed device that has at least a waist bottom, a knee bottom, and a foot bottom.
The air cell includes a main cell and a support cell.
The main cells are formed along the lateral direction of the mattress, and are arranged side by side in a plurality of rows along the longitudinal direction of the mattress.
The support cells are formed in an air chamber along the longitudinal direction of the mattress, and are arranged on the left and right at least at positions corresponding to the waist bottom of the bed device so as to sandwich the user under the main cell, and further, the support cells. The longitudinal length of the bed device is formed so that it extends from the position of the waist bottom of the bed device to the knee bottom but not to the foot bottom.
Further, an air cell control device for controlling the air cell is provided .
The air cell control device is a mattress device characterized in that when the angle of the knee bottom becomes an angle equal to or higher than a threshold value, the internal pressure of the support cell is controlled to be a set pressure .

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