JP6665054B2 - Mattress device and postural change support unit - Google Patents

Description

  The present invention relates to a mattress device having a posture change function and a posture change support unit.

  In recent years, the importance of home care has increased with the aging of society. In home care, a person who is not necessarily a care professional, such as a patient's family, often provides care, and reducing the burden on caregivers is a social need. In particular, to prevent pressure ulcers (bedsores) and to support the ADL (Activities of Daily Living), it is necessary to periodically change the patient's posture. It is a heavy burden.

JP-A-2006-016151

  An object of the present invention is to provide a mattress device and a posture change support unit that can change the position of a user.

  The mattress device according to the present invention includes a mat, a first fluid cell disposed at a central portion on the head side of the mat, and a second fluid cell disposed on one of left and right sides of the first fluid cell in the mat. A third fluid cell disposed at the foot center of the mat, a fourth fluid cell disposed on the one side of the third fluid cell in the mat, the first fluid cell, and the second fluid. A control unit capable of supplying a fluid to the cell, the third fluid cell, and the fourth fluid cell independently of each other.

  The postural change support unit according to the present invention includes a support sheet disposed on or below a mat, a first fluid cell disposed at a central portion on the head side of the support sheet, and the first fluid cell in the support sheet. A second fluid cell disposed on one side of the left and right of the third sheet, a third fluid cell disposed on a foot-side central portion of the support sheet, and a third fluid cell disposed on the one side of the third fluid cell on the support sheet. A fourth fluid cell, and a control unit capable of supplying a fluid to the first fluid cell, the second fluid cell, the third fluid cell, and the fourth fluid cell independently of each other.

  ADVANTAGE OF THE INVENTION According to this invention, the mattress apparatus which can change a user's position and a position change assistance unit can be implement | achieved.

It is a perspective view showing the mattress device concerning a 1st embodiment. It is a perspective view showing arrangement of an air cell in a 1st embodiment. (A)-(c) is a figure which shows the air cell of 1st Embodiment, (a) is a perspective view which shows the air cell of the both sides gusset, and (b) is a two-step type air cell with both sides gusset. FIG. 3C is a perspective view showing a single-side gusseted air cell. It is a figure which shows the positional relationship between a left end cell and a user. FIG. 2 is a front view illustrating the remote controller according to the first embodiment. (A)-(c) is a front view which shows a side position conversion operation | movement. 10 is a timing chart showing an operation of supplying air to the left scapula cell and the left thigh cell in the lateral position changing operation, with time on the horizontal axis and the state of the electromagnetic valve communicating with the air cell on the vertical axis. It is a perspective view which shows a side position conversion operation | movement. It is a figure showing an automatic side reclining position change operation. (A) And (b) is a perspective view which shows the conversion operation | movement from a side recumbent state to an end sitting position. It is a side view which shows the operation | movement which moves a user to a longitudinal direction. It is a side view which shows the operation | movement which prevents a user slipping down when raising a bed back. It is a perspective view which shows a trunk holding operation. (A)-(c) is a figure which shows a leaving-bed assistance operation | movement, and is the figure which looked at the user from behind. (A)-(c) is a figure which shows a leaving-bed assistance operation | movement, and is the figure which looked at the user from the side. 5 is a timing chart showing the operation of supplying air to two left end cells in the bed leaving assisting operation, with time on the horizontal axis and the state of the solenoid valve communicating with the air cell on the vertical axis. It is a perspective view showing the mattress device concerning a 2nd embodiment. It is a perspective view showing a posture change support unit concerning a 3rd embodiment.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a first embodiment will be described.
FIG. 1 is a perspective view showing a mattress device according to the present embodiment.
FIG. 2 is a perspective view showing the arrangement of the air cells in the present embodiment.
3 (a) to 3 (c) are views showing an air cell of the present embodiment, (a) is a perspective view showing an air cell with a gusset on both sides, and (b) is a two-stage type with an gusset on both sides. It is sectional drawing which shows an air cell, (c) is a perspective view which shows the air cell of the one side gusset type.
FIG. 4 is a diagram showing a positional relationship between the left end cell and the user.
FIG. 5 is a front view showing the remote controller according to the present embodiment.

  As shown in FIG. 1, in a mattress device 1 according to the present embodiment, a mat 10, for example, 12 air cells 20 provided in the mat 10, air is supplied to the air cell 20, and air is supplied from the air cell 20. A control unit 30 for discharging is provided. The mat 10 is placed on a bed 100 (see FIG. 13) capable of raising the back, on which a user P such as a patient (see FIG. 13) sleeps.

  The control section 30 includes a main body section 31, twelve air tubes 32, and a remote controller 33. In the main body 31, a housing 34 is provided, and a pump (not shown), a solenoid valve (not shown), a control board (not shown), and the like are housed in the housing 34. . The pump supplies air to the air cell 20 and discharges air from the air cell 20. The air tube 32 is connected between the pump and each of the air cells 20 to allow air to flow. The solenoid valve opens and closes each air tube 32. For example, when the solenoid valve is off, the air path is closed, and when the solenoid valve is on, the air path is open. The control board controls the operation of the solenoid valve.

  The remote controller 33 is pulled out of the main body 31 by a cable 35. Note that an operation panel may be attached to the housing 34 instead of the remote controller 33. A hook 36 is attached to an upper portion of the housing 34. The main body 31 can be attached to the bed 100 by hooking the hook 36 on the board 101 (see FIG. 13) of the bed 100.

  Hereinafter, in this specification, the side where the user's head is placed on the mat 10 when the user is in the supine position on the mat 10, that is, when lying on his back, is referred to as “head side”, The side on which the left hand is arranged is referred to as “foot side”, the side on which the left hand is arranged is referred to as “left side”, and the side on which the right hand is arranged is referred to as “right side”. The direction from the head side to the foot side is called "longitudinal direction", and the direction from left side to right side is called "width direction".

  In the mat 10, a bottom layer 11 and a top layer 12 are provided. On the upper surface of the bottom layer 11, a concave portion (not shown) for accommodating the air cell 20 is formed. The depth of the recess is such that the upper surface of the air cell 20 and the upper surface of the bottom layer 11 form substantially the same plane when the air cell 20 is exhausted. A groove (not shown) for disposing the air tube 32 is also formed on the upper surface of the bottom layer 11.

  The top layer 12 is disposed on the bottom layer 11, the air cell 20, and the tube 32. That is, the air cell 20 is sandwiched between the bottom layer 11 and the top layer 12. The shape of the top layer 12 is plate-like, and the thickness is substantially uniform. The bottom layer 11 and the top layer 12 are formed of a flexible material. Further, the mat 10 is provided with a highly flexible cover (not shown) that integrally wraps the bottom layer 11, the air cell 20, the portion of the tube 32 disposed inside the mat 10, and the top layer 12. .

  As shown in FIG. 2, the air cell 20 includes a head-side central cell 21, a left scapula cell 22, a right scapula cell 23, a foot-side central cell 24, a left thigh cell 25, a right thigh cell 26, an upper body left cell 27L, There is an upper body right cell 27R, left end cells 28A and 28B, and right end cells 29A and 29B. The term "air cell 20" is a general term for these twelve cells 21 to 29B. The control unit 30 is a set including a head-side central cell 21, a left scapula cell 22, a right scapula cell 23, a foot-side central cell 24, a left thigh cell 25, a right thigh cell 26, an upper body left cell 27L, and an upper body right cell 27R. The air can be supplied to and discharged from the left end cell 28A, the left end cell 28B, the right end cell 29A, and the right end cell 29B independently of each other.

  The head-side center cell 21 is provided on the head side of the mat 10 and at the center in the width direction. The head-side central cell 21 is arranged so as to be located immediately below the scapula on both the left and right sides when the user lies on the center of the mat 10 in the width direction. The left scapula cell 22 is arranged on the left side of the head-side central cell 21. However, the right part of the left scapula cell 22 is overlaid on the left part of the head-side central cell 21. The right scapula cell 23 is arranged on the right side of the head-side central cell 21. However, the left portion of the right scapula cell 23 is overlaid on the right portion of the head-side central cell 21. With respect to a center line C extending in the longitudinal direction of the mat 10, the left scapular cell 22 and the right scapular cell 23 are symmetrical and are separated from each other. The left scapula cell 22 and the right scapula cell 23 are arranged so as to be located immediately below the left scapula and immediately below the right scapula, respectively, when the user lies on the mat 10.

  The foot-side center cell 24 is provided on the foot side of the mat 10 and at the center in the width direction. The foot-side center cell 24 is arranged so as to be located immediately below the left and right thighs when the user lies on the center of the mat 10 in the width direction. The left thigh cell 25 is arranged on the left side of the foot-side central cell 24. However, the right part of the left thigh cell 25 is overlaid on the left part of the foot-side central cell 24. The right thigh cell 26 is arranged on the right side of the foot-side central cell 24. However, the left part of the right thigh cell 26 is overlaid on the right part of the foot-side central cell 24. With respect to the center line C, the left thigh cell 25 and the right thigh cell 26 are symmetrical and are separated from each other. The left thigh cell 25 and the right thigh cell 26 are arranged so as to be located immediately below the left thigh and right below the right thigh, respectively, when the user lies on the mat 10.

  The upper body left cell 27L is arranged on the left side and the foot side of the left shoulder blade cell 22. However, the head-side right part of the upper body left cell 27L is overlapped below the left foot-side part of the left shoulder blade cell 22. The upper body right cell 27R is arranged on the right side and the foot side of the right scapula cell 23. However, the head left side portion of the upper body right cell 27R is overlapped below the right foot side portion of the right shoulder blade cell 23. The upper body left cell 27L and the upper body right cell 27R are symmetrical about the center line C and are separated from each other. The upper body left cell 27L and the upper body right cell 27R are arranged so as to be located outside the left and right upper arms when the user lies on the mat 10.

  The left end cells 28A and 28B are arranged at the left end of the mat 10 along the longitudinal direction of the mat 10 and are separated from each other. The left end cell 28B is arranged on the foot side of the left end cell 28A. The right end cells 29A and 29B are arranged at the right end of the mat 10 along the longitudinal direction of the mat 10 and are separated from each other. The right end cell 29B is arranged on the foot side of the right end cell 29A.

As shown in FIGS. 3A to 3C, there are a plurality of types of air cells.
As shown in FIG. 3A, air cells 20a with a gusset on both sides are used for the head-side central cell 21, the foot-side central cell 24, the upper body left cell 27L, and the upper body right cell 27R. In the air cell 20a with a gusset on both sides, a gusset 20e is provided on both sides of the main body 20d. When air is injected into the air cell 20a having the gusset on both sides and inflated, the air cell 20a becomes a rounded rectangular parallelepiped.

  As shown in FIG. 3B, the left shoulder blade cell 22, the right shoulder blade cell 23, the left thigh cell 25, and the right thigh cell 26 use double-sided air cells 20b with gussets on both sides. The two-stage air cell 20b with gussets on both sides is provided with a lower sub cell 20f and an upper sub cell 20g. The upper subcell 20g is overlaid on the lower subcell 20f, and the gussets 20e on one side are joined. Further, a hole 20h through which air flows is formed between the lower subcell 20f and the upper subcell 20g. As a result, when air is injected into the two-stage air cell 20b with gussets on both sides, the non-joined side swells greatly to form a rounded fan shape.

  As shown in FIG. 3 (c), the left end cells 28A and 28B and the right end cells 29A and 29B use a single-sided gusseted air cell 20c. In the single-side gusseted air cell 20c, the gusset 20e is provided only on one side of the main body 20d. Thus, when air is injected into the one-sided gusseted air cell 20c, the side on which the gusset 20e is not provided swells greatly, forming a rounded triangular prism shape. For this reason, the central portion of the mat 10 in the air cell 20c is higher than the end portion.

  As shown in FIG. 4, when air is injected into the left end cells 28A and 28B, the distance D1 between the vertex 28Ap of the left end cell 28A and the vertex 28Bp of the left end cell 28B is equal to the distance between the right and left buttock of the user P. It is longer than the distance D2 between the vertices Pp. That is, D1> D2. On the other hand, the distance D3 between the left end cell 28A and the left end cell 28B is shorter than the width D4 of the buttocks of the user. That is, D3 <D4.

  As shown in FIG. 5, for example, eight operation buttons are provided on the front surface of the remote controller 33 of the control unit 30. The operation button 33a (leftward) is a button that is pressed when the body position of the user who is lying on his back is changed to the left sideways lateral position. The operation button 33b (rightward) is a button that is pressed when converting the body position of the user in the supine position to the rightward lateral position. The operation button 33c (posture holding) is a button that is pressed when holding the trunk of the user when the bed is raised. The operation button 33d (rise) is a button that is pressed when assisting a user sitting on the edge of the bed to stand up. The operation button 33e (exhaust) is a button pressed when exhausting air from the air cell. The operation button 33f (stop) is a button pressed when stopping the operation. The operation button 33g (power supply) is a button that is pressed when turning on the power to the control unit 30 to enable the operation and when turning off the power and invalidating the operation. The operation button 33h (automatic) is a button that is pressed when the body position is automatically changed according to a preset program. These operations will be described later.

  Next, the operation of the mattress device according to the present embodiment will be described.

<Side position conversion>
First, the lateral position conversion operation will be described.
6 (a) to 6 (c) are front views showing the lateral position conversion operation.
FIG. 7 is a timing chart showing the operation of supplying air to the left scapula cell and the left thigh cell in the lateral position conversion operation, with the horizontal axis taking time and the vertical axis taking the state of the solenoid valve communicating with the air cell.
FIG. 8 is a perspective view showing the lateral position conversion operation.
In FIGS. 6A to 6C, the illustration of the top layer 12 (see FIG. 1) and the cover is omitted.

  As shown in FIG. 6A, when the operation button 33g (power) of the remote controller 33 is pressed to turn on the control unit 30, the operation of all the operation buttons of the remote controller 33 becomes valid. In addition, a small amount of air is supplied to the head-side central cell 21, and the other air cells 20 are exhausted. At this time, the upper surface of the mat 10 is substantially flat. The purpose of supplying a small amount of air to the head-side central cell 21 is to improve the sleeping comfort of the user P. This state is referred to as an initial state.

In the initial state, the user P is lying on the center of the mat 10 in the width direction. From this state, the body position of the user P is converted to the right lateral recumbent position.
First, as shown in FIGS. 1 and 5, the caregiver presses the operation button 33 b (rightward) of the remote controller 33. Thereby, as shown in FIGS. 2, 6 (b) and 7, the pump of the control unit 30 operates to supply air to the head-side central cell 21 and the left scapula cell 22 via the air tube 32. At the beginning, these cells begin to swell. Then, after a lapse of a certain time Δt, air starts to be supplied from the control unit 30 to the foot-side central cell 24 and the left thigh cell 25 via the air tube 32, and these cells start to expand. The time Δt is, for example, 15 seconds. However, the optimal value of the time Δt differs depending on the capacity of the pump, the weight of the user P, and the like. As described above, the control unit 30 can realize a state in which air is supplied to all of the head-side central cell 21, the left scapula cell 22, the foot-side central cell 24, and the left thigh cell 25. After the supply of the air to the left scapula cell 22 is completed, the supply of the air to the head-side central cell 21 may be started. Similarly, after the supply of the air to the left thigh cell 25 is completed, the supply of the air to the foot-side central cell 24 may be started.

  As a result, as shown in FIGS. 6B and 8, the inflating air cell 20 pushes up the left scapula and the left thigh of the user P via the top layer 12, and the body of the user P becomes right Lean on. At this time, the left scapula cell 22 expands, the head-side central cell 21 expands, the left thigh cell 25 expands, and the foot-side central cell 24 expands. Further, the left scapula cell 22 and the left thigh cell 25 Because of the stepped cell, the body of the user P leans to the right more than usual. Also, as shown in FIG. 7, the left scapula of the user P is pushed up first, and after the user's eyes turn right, the left thigh is pushed up. As a result, it is possible to reduce the user's discomfort and to ensure safety.

  Then, as shown in FIG. 5, when the caregiver presses the operation button 33f (stop) of the remote controller 33, or when the head-side central cell 21, the left scapula cell 22, the foot-side central cell 24, and the left thigh cell 25 are turned on. When inflated to a predetermined size, the control unit 30 stops supplying air to these cells. As a result, as shown in FIG. 8, the body position of the user P is in the lateral recumbent position facing the right side.

  In this way, by changing the position of the user P from the supine position to the lateral position, the occurrence of pressure sores can be prevented. In addition, since the buttocks are lifted by lifting the left scapula and the left thigh, the caregiver can easily access the buttocks of the user P. As a result, operations such as diaper replacement are facilitated.

  Thereafter, as shown in FIG. 5, when the caregiver presses the operation button 33 e (exhaust) of the remote controller 33, the pump of the control unit 30 operates to discharge air from the left scapula cell 22 and the left thigh cell 25. . Thereby, these cells shrink, and the inclination angle of the user P decreases. Then, if the caregiver presses the operation button 33f (stop), the evacuation is stopped, and the inclination is fixed at the inclination angle at that time. If the caregiver does not press the operation button 33f (stop), the upper surface of the mat 10 returns to horizontal.

Thereafter, when the caregiver presses the operation button 33g (power supply) of the remote controller 33 to shut off the power of the control unit 30, the solenoid valve closes and the pump stops, and the air injected into each air cell 20 is sealed as it is. You. Thereby, the state of each air cell 20 is fixed. When the power of the control unit 30 is shut off, the operation buttons other than the operation button 33g (power) become invalid.
In the above description, an example has been described in which the body position is the right sidely lying position, but the same applies to the case where the body position is the left sidely lying position.

  In the above-described operation, the left scapula cell 22 contacts the left scapula of the user P, and the left thigh cell 25 contacts the left thigh of the user P. Since the scapula and the thigh are rigid portions without joints, the user P does not absorb the expansion of the cell by bending the joints, and can displace the entire body of the user P.

  Further, since the left scapula cell 22 and the left thigh cell 25 are each a two-stage air cell 20b shown in FIG. 3B, the left body of the user P can be lifted high. Thereby, a large inclination angle of, for example, about 75 ° can be realized.

  Further, when the left scapula cell 22 and the left thigh cell 25 are inflated, the head-side central cell 21 and the foot-side central cell 24 are also inflated, so that the shoulder and thigh are not cramped, and the user feels uncomfortable. Can be reduced.

  On the other hand, as shown in FIG. 6 (c), if the head-side central cell 21 and the foot-side central cell 24 are not inflated, the user P cannot use the depression formed by the mat 10 and the left scapula cell 22. , And fall into the depression formed by the mat 10 and the left thigh cell 25, and the shoulders and thighs become cramped, giving a sense of discomfort.

Next, an applied operation of the lateral position conversion will be described.
First, automatic lateral position conversion by a timer will be described.
FIG. 9 is a diagram illustrating an automatic lateral position conversion operation.

  In order to perform this operation, a timer is built in the control unit 30. Also, a predetermined program is stored in the control unit 30. Then, when the caregiver presses the operation button 33h (automatic) of the remote controller 33, the control unit 30 automatically operates, and automatically changes the position of the user P at appropriate time intervals. For example, as shown in FIG. 9, the inclination angle of the user P in the width direction is changed from 0 ° (horizontal state) to + 25 ° (a state inclined to the right side by 25 °) at predetermined time intervals, for example, every 30 minutes. , + 50 °, + 75 °, + 50 °, + 25 °, 0 °, -25 ° (in a state inclined to the left by 25 °), -50 °, -75 °, -50 °, -25 °, 0 ° Change. Thus, for example, when the user is sleeping on the mat 10 at night, the position of the user P can be changed without the caregiver assisting each time. As a result, the pressure ulcer of the user P can be prevented, and the burden on the caregiver can be reduced.

  Note that a breathing sensor may be provided near the bed, and the posture may be changed when the user P stops breathing. Thereby, the user P is encouraged to breathe, and the symptoms of apnea syndrome can be reduced. Alternatively, a microphone may be provided on the head side of the bed, and the body position may be changed when snoring is detected. Thereby, snoring can be suppressed.

Next, an operation of sitting on the end of the bed from the laterally lying state will be described.
FIGS. 10A and 10B are perspective views showing the operation of converting from the lateral position to the end sitting position.

  First, as shown in FIG. 10A, the body position of the user P is changed from the supine state to the right lateral recumbent state by the above-described operation (see FIGS. 6A and 6B). At this stage, the left foot of the user P is above the right foot.

  Next, as shown in FIG. 10B, the bed 100 is raised. At this time, the user P lowers both feet to the floor from the right end of the bed 100 with the help of the user or a caregiver. Then, the user can easily sit on the end of the bed by raising the upper body using the twisting motion. As a result, the range of action of the user P is widened, and ADL (daily activities) is supported.

Next, an operation of moving the user P in the height direction, that is, in the longitudinal direction of the mat 10 while the user P is lying on the back will be described.
FIG. 11 is a side view showing the operation of moving the user in the longitudinal direction.

  Normally, on the back of a person, the buttocks protrude more than the back and the thighs. Therefore, when the user P lying on the back is moved in the longitudinal direction, a large frictional force is generated between the buttocks and the mat. I do. For this reason, it is extremely difficult for the caregiver to move the user alone in the longitudinal direction.

  Therefore, in the present embodiment, as shown in FIG. 11, the control unit 30 expands the head-side central cell 21 and the foot-side central cell 24. Thereby, the scapula and the right and left thighs of the user P are lifted from the mat 10, and the buttocks Pb are raised. As a result, the frictional force between the buttocks and the mat 10 is reduced, and the caregiver can insert the arm between the mat 10 and the user P, so that the user P can be easily moved in the longitudinal direction. become.

Next, an operation for preventing the user from slipping to the foot side when the bed is raised will be described.
FIG. 12 is a side view showing an operation of preventing a user from sliding down when the bed is raised.

  As shown in FIG. 12, when the bed 100 is raised, if the bed 100 does not have the function of raising the feet, the user P slips down to the feet. Therefore, in the present embodiment, the control unit 30 inflates the foot-side central cell 24, and then raises the bed 100. Thereby, it is possible to prevent the buttocks Pb of the user P from being sandwiched between the back plate of the bed 100 and the foot-side central cell 24 and slipping to the foot side. A dedicated air cell may be provided at the position of the knee and inflated.

<Trunk retention>
Next, the trunk holding operation will be described.
FIG. 13 is a perspective view showing a trunk holding operation.

  As shown in FIG. 13, the mat 10 according to the present embodiment is placed on a bed 100. The bed 100 is a bed that can be raised. That is, a portion 102 of the floor plate of the bed 100 on which the upper body of the user P rides is inclined upward. Thereby, the upper body of the user P can be raised. Also, of the floor plate of the bed 100, the portion 103 on which the knee of the user P rides is bent so as to be convex upward. Thus, when the upper body of the user P is raised, the user P can be prevented from slipping down to the foot side.

  Then, the mattress device 1 according to the present embodiment holds the trunk of the user P so that the user P does not incline left and right when the bed 100 performs the back raising operation. Hereinafter, this operation will be described in detail.

  First, as shown in FIG. 5, the caregiver presses the operation button 33c (holding posture) of the remote controller 33. Thereby, as shown in FIG. 2 and FIG. 13, the control unit 30 supplies air to the upper body left cell 27L and the upper body right cell 27R to inflate these cells. The upper body left cell 27L and the upper body right cell 27R bulge outside the upper arm of the user P, and hold the upper part of the upper body of the user P from right and left via the top layer 12 (see FIG. 1).

  Next, the caregiver operates the bed 100 and raises his / her back. Thereby, the portion 103 is bent so as to be convex upward, and then the portion 102 rises. As a result, the upper body of the user P can be raised, and the sitting posture can be taken. At this time, since the trunk of the user P is held from the left and right by the upper body left cell 27L and the upper body right cell 27R, it is possible to suppress the user P from leaning left and right. As a result, it is possible to prevent the user P from falling due to the back-up operation. In addition, the caregiver need not always support the user P during the back-up operation, so that the burden on the caregiver is reduced.

<Support for leaving bed>
Next, the leaving support operation will be described.
14 (a) to 14 (c) are diagrams showing the leaving-bed assisting operation, and are diagrams in which the user is viewed from behind.
FIGS. 15A to 15C are diagrams showing the leaving-bed assisting operation, and are diagrams in which the user is viewed from the side.
FIG. 16 is a timing chart showing the operation of supplying air to the two left end cells in the bed leaving assisting operation, with the horizontal axis taking time and the vertical axis taking the state of the solenoid valve communicating with the air cell.

  As shown in FIGS. 14A and 15A, in the initial state, a small amount of air is injected into the head-side central cell 21 (see FIG. 2), and the other air cells 20 are in the exhaust state. . Then, the user P is sitting on the left end of the bed 100. At this time, as shown in FIG. 4, the user P places the buttocks Pb directly above the left end cell 28A and right above the left end cell 28B according to a guide (not shown) drawn on the cover of the mat 10, for example. And the two apexes Pp of the buttocks are arranged between the apex 28Ap of the left end cell 28A and the apex 28Bp of the left end cell 28B. Also, the feet should be located behind the knees as much as possible.

  From this state, as shown in FIG. 5, the caregiver presses the operation button 33d (rise). Thereby, as shown in FIG. 1 and FIG. 17, the control unit 30 alternately and intermittently supplies air to the left end cells 28A and 28B. As a result, as shown in FIGS. 14 (b) and 15 (b), the left end cells 28A and 28B alternately and gradually expand, and the buttocks of the user P are pushed up. In addition, since the left end cells 28A and 28B in the inflated state are higher at the center in the width direction of the mat 10 than at the edge, the head and upper body of the user P are pushed forward.

  At this time, since the left end cells 28A and 28B located on the left and right as viewed from the user P alternately expand, the trunk of the user P is swung right and left little by little. Accordingly, the user P tries to unconsciously correct the posture, and tries to bring the center axis Lp of the trunk closer to the center line Lc between the left end cell 28A and the left end cell 28B. As a result, the center axis Lp of the trunk of the user P does not largely incline left and right with respect to the center line Lc. For this reason, it can suppress that a user falls right and left.

  Then, as shown in FIGS. 14C and 15C, when the left end cells 28A and 28B are sufficiently expanded, the upper body of the user P is largely pushed forward. As a result, with a little more self-help or assistance, the user P can stand up with his upper body positioned just above his feet. In this way, it is possible to assist the user P in leaving the bed.

  As shown in FIG. 16, in the above-described bed leaving assisting operation, pressure sensors are provided in the left end cells 28A and 28B, respectively, and the time for supplying air to the left end cell 28A based on the detection results of these pressure sensors. The duty ratio {tA / (tA + tB)} between tA and time tB for supplying air to the left end cell 28B may be controlled. In this case, for example, more air may be supplied to the cell having the lower pressure so that the pressure of the two cells may be uniform, or more air may be supplied to the cell having the higher pressure to obtain a higher pressure. The height of one cell may be uniform. Which of the methods has less discomfort for the user P depends on the physique, physical ability, and the like of the user P.

  In the above description, the example in which the user P is seated on the left end of the bed 100 and the left end cells 28A and 28B are inflated to support the rising motion of the user P has been described. The same is true. That is, when the user P is sitting on the right end of the bed 100, the right end cells 29A and 29B are expanded to assist the user P in starting up.

<Effect>
Next, effects of the present embodiment will be described.
As described above, according to the mattress device according to the present embodiment, the lateral position conversion that changes the posture of the user from the back to the side, the trunk holding when the user's upper body is raised, and the user's standing up are supported. Can be performed.

  In the lateral position conversion, the control unit 30 inflates the head-side central cell 21, the left scapula cell 22, the foot-side central cell 24, and the left thigh cell 25, thereby changing the posture of the user from the supine position to the right lateral position. Can be converted to Similarly, by inflating the head-side central cell 21, the right scapula cell 23, the foot-side central cell 24, and the right thigh cell 26, the control unit 30 can convert to the left lateral recumbent position.

  At this time, by forming the left scapula cell 22, the right scapula cell 23, the left thigh cell 25, and the right thigh cell 26 as two-stage air cells, the half body of the user P can be lifted high and the inclination angle can be increased. can do. Further, the left scapula cell 22 and the right scapula cell 23 partially overlap with the head-side central cell 21, and the left thigh cell 25 and right thigh cell 26 partially overlap with the foot-side central cell 24. The inclination angle can be further increased.

  In addition, by inflating the head-side central cell 21 and the foot-side central cell 24 arranged at the center in the width direction of the mat 10 together with either the left or right air cell, the shoulder and thigh of the user become cramped. Can be prevented and the user's discomfort can be reduced.

  Further, after starting the supply of air to the air cell contacting the scapula, after a predetermined time Δt, the supply of air to the air cell contacting the thigh is started, whereby the posture of the user is improved. Before inclining in earnest, the gaze can be guided in the inclining direction. As a result, the user can be prevented from suddenly feeling, and safety is improved.

  By changing the posture of the user from the supine position to the lateral position, pressure ulcers can be prevented. In addition, by lifting the scapula and the thighs, the buttocks float, which facilitates operations such as changing diapers. Furthermore, after the user's posture is in the lateral position, the user can easily convert the user to the end sitting position by operating the bed raising function.

  In addition, by inflating only the head-side central cell 21 and the foot-side central cell 24, the user can be lifted in the supine position. As a result, access to the buttocks becomes easy, and it becomes easy to move the user in the height direction. Further, by inflating only the foot-side central cell 24, it is possible to prevent the user from shifting to the foot when using the function of raising the back of the bed.

  In the trunk holding, by operating the function of raising the back of the bed, when raising the user's upper body, the control unit 30 supplies air to the upper body left cell 27L and the upper body right cell 27R to inflate, The user's trunk can be sandwiched and held from both sides. As a result, it is possible to prevent the user from falling right and left during the raising operation. Further, since the user can be held at a high position by sandwiching the upper arm of the user, the stability is high.

  In the wake-up support, when the user is sitting on the left end of the bed, for example, the distance D1 between the vertices of the left end cells 28A and 28B in which the air is injected is equal to the left and right vertices of the buttocks of the user P. The distance D2 is longer than the distance D2 between Pp, and the distance D3 between the left end cell 28A and the left end cell 28B is shorter than the width D4 of the buttocks of the user. Then, the control unit 30 can support the rising of the user P by expanding the left end cells 28A and 28B or the right end cells 29A and 29B.

  At this time, the left end cell 28A and the left end cell 28B are independent of each other, and air does not flow from one side to the other, so that one air cell does not expand significantly more than the other air cell. As a result, the buttocks of the user are sandwiched between the two left end cells 28A and the left end cell 28B, and the posture is stabilized.

  Further, the control unit 30 alternately supplies the air to the left and right cells, for example, the left end cell 28A and the left end cell 28B when viewed from the user sitting on the seat, so that the user's trunk is chopped. To awaken the user's sense of balance. As a result, it is possible to prevent the upper body of the user from greatly tilting left and right, and to prevent the user from falling.

  In addition, according to the mattress device 1 according to the present embodiment, since the lateral position conversion operation and the bed support operation can be performed, the above-described conversion from the supine position to the lateral position and the lateral position using the bed raising function are performed. By continuously performing the conversion to the end sitting position and the support for leaving the bed from the end sitting position, the user sleeping on the back can also be made to stand.

  Furthermore, in the mattress device 1 according to the present embodiment, the remote controller 33 is separated from the main unit 31 in the control unit 30. Therefore, the main unit 31 is arranged in a dead space where access is inconvenient, and only the remote controller 33 is used by the caregiver. Can be placed in a location that is easily accessible. Thus, for example, even in the case of home care, where the space around the bed is limited, the space can be effectively used and the burden on the caregiver can be reduced. Further, since the hook 36 is attached to the main body 33, the hook 36 can be hooked on the board 101 of the bed 100. Thus, the dead space around the bed 100 can be effectively used.

  As described above, the mattress device according to the present embodiment can support various operations of the user. This can support the user's ADL and reduce the burden on the caregiver.

(Second embodiment)
Next, a second embodiment will be described.
FIG. 17 is a perspective view showing the mattress device according to the present embodiment.

  As shown in FIG. 17, in the mattress device 2 according to the present embodiment, the main body 31 of the control unit 30 is embedded in the bottom layer 11 of the mat 10. However, the remote controller 33 is drawn out of the mat 10 via the cable 35.

  According to the present embodiment, by not arranging the main body 31 of the control unit 30 outside the mat 10, space can be saved as compared with the first embodiment described above. As a result, the mattress device 2 can be installed even when there is almost no space around the bed. Other configurations, operations, and effects of the present embodiment are the same as those of the above-described first embodiment.

(Third embodiment)
Next, a third embodiment will be described.
FIG. 18 is a perspective view showing the postural change support unit according to the present embodiment.

  As shown in FIG. 18, in the postural change support unit 3 according to the present embodiment, a support sheet 40, an air cell 20, and a control unit 30 are provided. The support sheet 40 is formed of a tough and soft material, and has a rectangular sheet shape. The air cell 20 and the air tube 32 are attached to the support sheet 40. The type and arrangement of the air cells 20 are the same as in the first embodiment. The configuration of the control unit 30 is the same as that of the first embodiment.

  The support sheet 40 is used by being installed on an existing mat 110. The mat 110 is a normal mat having no active function, and is placed on the bed 100 (see FIG. 13). The outer shape of the support sheet 40 is the same as or smaller than the mat 110. Therefore, when the support sheet 40 is set on the mat 110, the support sheet 40 does not protrude from the mat 110. On the other hand, the control unit 30 is arranged outside the mat 110 and is hooked on, for example, the board 101 of the bed 100.

  The postural change support unit 3 according to the present embodiment can be installed on an existing mat 110. Therefore, the cost of the posture change support unit 3 itself can be reduced, and the user can continue to use the mat 110 that the user is accustomed to. As a result, there are few obstacles during introduction. Other configurations, operations, and effects of the present embodiment are the same as those of the above-described first embodiment.

  When the mat 110 is thin, the support sheet 40 may be arranged below the mat 110, that is, between the bed 100 and the mat 110. Also, in the present embodiment, the control unit 30 may be provided in the support sheet 40 as in the above-described second embodiment.

  In each of the above-described embodiments, an example is shown in which air is supplied to each air cell to inflate the air cell. However, the present invention is not limited to this. For example, a gas such as an inert gas, or a liquid such as water or oil may be used instead of air. Further, mechanical means such as an actuator may be provided instead of the air cell.

  Each of the above-described embodiments is one example in which the present invention is embodied, and the present invention is not limited to these embodiments. For example, in each of the above embodiments, some components or operations added, deleted or changed are also included in the present invention.

  1, 2: mattress device, 3: posture change support unit, 10: mat, 11: bottom layer, 12: top layer, 20, 20a, 20b, 20c: air cell, 20d: main body, 20e: gore, 20f: lower stage Subcell, 20g: Upper subcell, 20h: Hole, 21: Head-side central cell, 22: Left scapular cell, 23: Right scapular cell, 24: Foot-side central cell, 25: Left thigh cell, 26: Right thigh cell, 27L: Upper body left cell, 27R: Upper body right cell, 28A, 28B: Left end cell, 28Ap, 28Bp: Apex, 29A, 29B: Right end cell, 30: Control unit, 31: Main body, 32: Air tube, 33 : Remote control, 33a, 33b, 33c, 33d, 33e, 33f, 33g, 33h: operation button, 34: housing, 35: cable, 36: hook, 40: support Sheet, 100: bed, 101: board, 102, 103: part, 110: mat, C: center line, D1: distance between vertices of the left end cell, D2: distance between left and right vertices of the hip, D3: left end Distance between cells, D4: width of hip, Lc: center line, Lp: center axis, P: user, Pb: hip, Pp: apex of hip, Δt, tA, tB: time

Claims (7)

With a mat,
A first fluid cell disposed at a head-side central portion of the mat;
A second fluid cell disposed on one of the left and right sides of the first fluid cell in the mat;
A third fluid cell disposed in the center of the foot side of the mat;
A fourth fluid cell disposed on the one side of the third fluid cell in the mat;
A control unit that can supply fluid to the first fluid cell, the second fluid cell, the third fluid cell, and the fourth fluid cell independently of each other;
With
A mattress device , wherein a portion of the second fluid cell overlaps a portion of the first fluid cell .   The mattress device according to claim 1, wherein a part of the fourth fluid cell overlaps a part of the third fluid cell. A fifth fluid cell disposed on the left and right sides of the first fluid cell in the mat,
A sixth fluid cell disposed on the other side of the third fluid cell in the mat;
The mattress device according to claim 1 or 2, further comprising:   4. The mattress device according to claim 3, wherein a part of the fifth fluid cell overlaps a part of the first fluid cell.   The mattress device according to claim 3 or 4, wherein a part of the sixth fluid cell overlaps a part of the third fluid cell. When a person is lying on the mat, the second fluid cell is disposed immediately below the left scapula of the person, and the fourth fluid cell is disposed immediately below the left thigh of the person. The fluid cell according to any one of claims 3 to 5, wherein the fifth fluid cell is disposed immediately below the right scapula of the person, and the sixth fluid cell is disposed immediately below the right thigh of the person. Mattress equipment. With a support sheet placed on or below the mat,
A first fluid cell disposed at a central portion on the head side of the support sheet;
A second fluid cell disposed on one of left and right sides of the first fluid cell in the support sheet;
A third fluid cell disposed at the center of the foot side of the support sheet;
A fourth fluid cell disposed on the one side of the third fluid cell in the support sheet;
A control unit that can supply fluid to the first fluid cell, the second fluid cell, the third fluid cell, and the fourth fluid cell independently of each other;
With
A postural change assisting unit wherein a part of the second fluid cell overlaps a part of the first fluid cell .