Body position changing device, mattress device, bed device, and body position changing method

Abstract

The present invention provides a body position conversion device comprising: a left shoulder fluid bag disposed at a position corresponding to a shoulder joint part on the left side of a person to be cared in a supine position, and a left shoulder fluid bag disposed at a position corresponding to a shoulder joint part on the right side of the person to be cared in a supine position; a left back fluid bag which is disposed at a position corresponding to the left back of the person to be cared in the supine position and which is driven independently of the left shoulder fluid bag; a right shoulder fluid bag disposed at a position corresponding to the shoulder joint on the right side of the person to be cared in the supine position; and a right back fluid bag which is disposed at a position corresponding to the back of the right side of the person to be cared in the supine position and which is driven independently of the right shoulder fluid bag.

Description

Technical Field

[0001] The present invention relates to a body position changing device, a mattress device, a bed device and a body position changing method, and in particular to a body position changing device, a mattress device, a bed device and a body position changing method for changing the sleeping position of a person who needs care. Background Art

[0002] For people who need to stay in bed for a long time and have difficulty moving their bodies on their own, such as critically ill patients, it is difficult to change their sleeping position, so it is difficult for blood to flow adequately to the parts of the body that bear their weight. If the blood is difficult to flow for a long time, the skin in that part will ulcerate or get wounded. If the bedsores thus produced become severe, they may cause deep damage to exposed muscle tissue or bones. In order to prevent bedsores and avoid them from becoming severe, the sleeping position of the bedridden person needs to be changed frequently, for example, every 2 hours. In this way, it takes a lot of labor for the caregiver to manually change the body position of the caregiver, which becomes a burden on the caregiver.

[0003] In recent years, the burden on caregivers has been reduced by using a mattress that has air chambers on a mattress on which a care receiver is placed and inflates and deflates the air chambers with an air pump to tilt the mattress and change the body position of the care receiver (for example, Patent Document 1).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 8-52180 Summary of the invention

[0007] Problems to be solved by the invention

[0008] In conventional mattresses, the sleeping position of the care receiver is tilted to change the body position according to the tilt of the mattress, but the care receiver may feel uncomfortable during the process of changing the body position by tilting the sleeping position. There is room for improvement from the perspective of the care receiver's feeling of use.

[0009] The present invention is completed in view of such actual conditions, and its purpose is to provide a body position changing device, a mattress device, a bed device and a body position changing method, wherein the body position changing device can change the body position in a natural posture without making the person being cared for feel uncomfortable.

[0010] Problem Solving Methods

[0011] The inventors of the present application have noticed that simply tilting the body of a care receiver as a whole is not a natural turning posture, and have conducted intensive studies focusing on the movements of the joints of the care receiver when turning over, thereby arriving at the present invention.

[0012] According to the present invention, a posture changing device is provided, which includes: a left shoulder fluid bag, the left shoulder fluid bag is arranged at a position corresponding to the shoulder joint of the left side of the nursing person in a supine sleeping position; a left back fluid bag, the left back fluid bag is arranged at a position corresponding to the back of the left side of the nursing person in a supine sleeping position, and is driven independently of the left shoulder fluid bag; a right shoulder fluid bag, the right shoulder fluid bag is arranged at a position corresponding to the shoulder joint of the right side of the nursing person in a supine sleeping position; and a right back fluid bag, the right back fluid bag is arranged at a position corresponding to the back of the right side of the nursing person in a supine sleeping position, and is driven independently of the right shoulder fluid bag. Here, the shoulder joint refers to the area of ​​the deltoid lateral part (the middle part of the deltoid) and the posterior part of the deltoid including the fitting part of the acromion and the humeral head. In addition, the so-called position corresponding to the shoulder joint refers to the position where the peripheral part of the left (right) shoulder fluid bag overlaps at least a part of the area of ​​the shoulder joint of the left (right) side defined above when viewed from above (when viewed in the positive direction of the Z axis). In addition, the back refers to an area corresponding to a position on the spine side compared to the shoulder joint with the thoracic vertebra as the center. In addition, the so-called arrangement at a position corresponding to the back refers to a position where the peripheral edge of the left (right) back fluid bag overlaps at least a part of the area of ​​the left (right) back defined above when viewed from above (when viewed in the positive direction of the Z axis).

[0013] By providing a shoulder fluid bag at a position corresponding to the shoulder joint of the person being cared for, even without the help of a caregiver or the like, the shoulder blades of the person being cared for can be opened by the expansion of the shoulder fluid bag, and the back can be slightly arched in the shoulder width direction (the direction in which the body position is to be changed) to change the body position. By providing a back fluid bag, the back fluid bag can be inflated and the back can be lifted in conjunction with the slightly arched posture of the back of the person being cared for in the shoulder width direction formed by the expansion of the shoulder fluid bag, so that turning over is closer to natural, and the body position change is in a natural posture, thereby reducing the discomfort of the person being cared for. In addition, when the body position change device of the present invention is arranged on the bottom side of a mattress (hereinafter also referred to as a cushion part) and the body position of the person being cared for is changed via the cushion part, the above-mentioned action is exerted, so turning over is closer to natural, and the body position change is in a natural posture, thereby reducing the discomfort of the person being cared for.

[0014] Preferably, the left back fluid bag and the right back fluid bag each have a concave cutout for the left shoulder fluid bag and the right shoulder fluid bag to fit in. By providing such a back fluid bag, a simple structure can be achieved that does not interfere with the lifting effect of the shoulder fluid bag while maintaining the lifting effect caused by the expansion of the back fluid bag.

[0015] Preferably, the left shoulder fluid bag and the right shoulder fluid bag are circular fluid bags in a flat state without fluid supply, and the left back fluid bag and the right back fluid bag each have a concave cutout for the left shoulder fluid bag and the right shoulder fluid bag to fit into, and each is a single rectangular fluid bag in a flat state without fluid supply. By providing the shoulder fluid bag and the back fluid bag of such shapes, a simpler structure can be achieved that does not interfere with the lifting effect of the shoulder fluid bag while maintaining the lifting effect caused by the expansion of the back fluid bag.

[0016] Preferably, the device further comprises: a left waist fluid bag, which is arranged at a position corresponding to the left waist of the person being cared for in a supine position; and a right waist fluid bag, which is arranged at a position corresponding to the right waist of the person being cared for in a supine position. By providing the fluid bag at a position corresponding to the waist, the lower body of the person being cared for can also be turned over, thereby enabling a more natural and effective change of body position. Here, the left (right) waist of the person being cared for refers to an area corresponding to the position of the left (right) lumbar spine and pelvis. In addition, the so-called arrangement at a position corresponding to the left (right) waist refers to a position where the peripheral edge of the left (right) waist fluid bag overlaps at least a portion of the area of ​​the left (right) waist defined above when viewed from above (when viewed in the positive direction of the Z axis).

[0017] Preferably, each of the left waist fluid bag and the right waist fluid bag is a single rectangular fluid bag in a flat state without fluid supply. By arranging such an integrated single waist fluid bag, it is possible to simplify its formation while maintaining the waist lifting effect of the waist fluid bag.

[0018] Preferably, a left back plate having a flat surface facing the left back of the care recipient is arranged above the left back fluid bag, and a right back plate having a flat surface facing the right back of the care recipient is arranged above the right back fluid bag. By arranging the plate between the care recipient and the fluid bag, the force caused by the expansion of the fluid bag effectively acts on the care recipient via the plate, thereby enabling the care recipient to change his / her body position.

[0019] In addition, preferably, a left shoulder board having a plane facing the left shoulder joint of the care receiver is arranged above the left shoulder fluid bag, and a right shoulder board having a plane facing the right shoulder joint of the care receiver is arranged above the right shoulder fluid bag. By arranging the board between the care receiver and the fluid bag, the force caused by the expansion of the fluid bag effectively acts on the care receiver via the board, thereby enabling the care receiver to change his / her body position.

[0020] Preferably, there is a control device for driving the left shoulder fluid bag, the left back fluid bag, the right shoulder fluid bag and the right back fluid bag respectively. By controlling the fluid bags to be driven respectively, appropriate body position changes can be repeated.

[0021] Preferably, the control device has a fluid flow path and a valve, the fluid flow path is connected to at least one of the left shoulder fluid bag, the left back fluid bag, the right shoulder fluid bag, and the right back fluid bag, the valve is arranged in the fluid flow path, the valve is configured to switch between an open state for passing fluid through the fluid flow path and a closed state for cutting off the fluid flow, and the control device is configured to open the valve when the power is interrupted. When the power is interrupted, since the valve of the control device is in an open state, even if the control device does not work due to a power outage, the person being cared for will not be placed in a tilted sleeping position, thereby improving the safety of the medical or nursing site.

[0022] Preferably, the left back fluid bag and the right back fluid bag have an expansion limiting portion for limiting the expansion state. By providing such an expansion limiting portion, the body (back) of the person being cared for or the bottom surface of the pad can be stably supported directly or via a plate, the body of the person being cared for or the bottom surface of the pad can be effectively pushed up to implement body position change, and the strength of the back fluid bag itself can be improved.

[0023] Preferably, the left waist fluid bag and the right waist fluid bag have an expansion limiting portion for limiting the expansion state. By providing such an expansion limiting portion, the waist of the care recipient or the bottom surface of the pad supporting the waist can be stably supported directly or via a plate, the waist of the care recipient or the bottom surface of the pad can be effectively pushed up, thereby implementing body position change, and the strength of the waist fluid bag itself can be improved.

[0024] Preferably, there is a position adjustment mechanism, which adjusts the positions of the left shoulder fluid bag, the left back fluid bag, the right shoulder fluid bag, and the right back fluid bag separately or in an integrated manner. By providing such a position adjustment mechanism, the preferred positions of the left shoulder fluid bag, the left back fluid bag, the right shoulder fluid bag, and the right back fluid bag can be adjusted, so that the optimal body position change corresponding to the physique (skeleton) of the care recipient can be implemented.

[0025] According to the present invention, a mattress device is also provided, which is a body position changing device for changing the body position of a person being cared for in a supine position, and the mattress device comprises: a left shoulder movable part, which lifts the shoulder joint part on the left side of the person being cared for; a left back movable part, which lifts the left side of the back of the person being cared for; a right shoulder movable part, which lifts the shoulder joint part on the right side of the person being cared for; and a right back movable part, which lifts the right side of the back of the person being cared for; the mattress device is configured so that the left shoulder movable part is driven independently of the left back movable part, and the right shoulder movable part is driven independently of the right back movable part.

[0026] In this way, by utilizing the shoulder movable part to lift the shoulder joint of the person being cared for, the shoulder blades of the person being cared for can be opened, and the body position change can be started in a natural posture with the back slightly arched in the direction of the shoulder width (the direction in which the body position is desired to be changed). The back of the person being cared for can be lifted in conjunction with this posture by the back movable part, thereby achieving a body position change in a more natural posture and reducing the discomfort of the person being cared for.

[0027] Preferably, there is a position adjustment mechanism, which adjusts the positions of the left shoulder movable part, the left back movable part, the right shoulder movable part, and the right back movable part separately or in an integrated manner. By providing such a position adjustment mechanism, the preferred positions of the left shoulder movable part, the left back movable part, the right shoulder movable part, and the right back movable part can be adjusted, so that the optimal body position change corresponding to the physique (skeleton) of the person being cared for can be implemented.

[0028] In addition, according to the present invention, there is also provided a mattress device, which comprises the above-mentioned body position changing device and a cushion part for supporting a person being cared for, and the body position changing device is fixed to the bottom surface of the cushion part. With such a configuration, the force generated by the movable part of the body position changing device is transmitted to the person being cared for via the cushion part to play the above-mentioned role, which is close to natural turning over and becomes a body position change in a natural posture, thereby reducing the discomfort of the person being cared for, and by supporting the person being cared for by the cushion part, the person being cared for can be effectively prevented from bedsores and prevented from becoming more severe.

[0029] In addition, according to the present invention, a bed device is also provided, which has the above-mentioned mattress device and a bed structure body for fixing the mattress device. Preferably, the above-mentioned body position changing device is arranged on the bed board surface of the bed structure body. Such a bed device, as a bed device having the effect of the above-mentioned mattress device, is suitable for nursing care of people who need nursing care and have difficulty in moving independently.

[0030] In addition, according to the present invention, a body position changing method is provided, wherein the body position changing method is a body position changing method for a person being cared for in a supine position using the above-mentioned body position changing device, wherein the left shoulder fluid bag or the right shoulder fluid bag is driven to expand the left shoulder fluid bag or the right shoulder fluid bag, thereby lifting the left or right shoulder joint of the person being cared for in a supine position, and in a state where the left shoulder fluid bag or the right shoulder fluid bag is expanded, the left back fluid bag or the right back fluid bag is driven to expand the back fluid bag corresponding to the side of the back where the shoulder joint is lifted, thereby lifting the back where the shoulder joint is lifted. Using the body position changing device, in a state where the shoulder joint is lifted using the shoulder fluid bag on one side, the back is lifted using the corresponding back fluid bag, thereby enabling the person being cared for to change his body position in a natural posture. In addition, when the above-mentioned body position change device is arranged on the bottom side of the pad and the body position of the person being cared for is changed through the pad, while the shoulder joint is lifted by the shoulder fluid bag on one side through the pad by the above-mentioned body position change method, the back is lifted by using the corresponding back fluid bag, thereby approaching natural turning over, resulting in a natural body position change, thereby reducing the discomfort of the person being cared for.

[0031] In addition, according to the present invention, a body position changing method is provided, wherein the body position changing method is a body position changing method for a person being cared for in a supine position using the above-mentioned body position changing device, wherein the left shoulder movable part or the right shoulder movable part is extended and driven to lift the left or right shoulder joint of the person being cared for in a supine position, and in a state where the left shoulder movable part or the right shoulder movable part is driven, the back movable part corresponding to the back on the side where the shoulder joint is lifted is driven in the left back movable part and the right back movable part, thereby lifting the back on the side where the shoulder joint is lifted. In a state where the body position changing device is used and the shoulder joint is lifted using the shoulder movable part on one side, the body position of the person being cared for can be changed in a natural posture by lifting the back using the corresponding back movable part. In addition, when the above-mentioned body position change device is arranged on the bottom side of the cushion part and the body position of the person being cared for is changed through the cushion part, when the shoulder joint part is lifted by the shoulder movable part on one side through the cushion part through the above-mentioned body position change method, the back can be lifted by using the corresponding back movable part to nearly naturally turn over, which becomes a body position change in a natural posture, thereby reducing the discomfort of the person being cared for.

[0032] Effects of the Invention

[0033] According to the present invention, the body position of the person being cared for can be changed in a natural posture without the help of a caregiver or the like. As a result, the discomfort of the person being cared for caused by the change of body position can be reduced, and the bedsore of the person being cared for can be effectively prevented and aggravated. In addition, even if the control device does not work due to a power outage or the like, the person being cared for will not be placed in a tilted sleeping position, thereby improving the safety of the medical or nursing site. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a perspective view schematically showing the overall structure of the mattress device in the first embodiment of the present invention.

[0035] Figure 2 This is an exploded perspective view of the structure of the mattress device in the first embodiment as seen from the bottom surface side.

[0036] Figure 3 This is an explanatory diagram of the structure of the body position changing device in the first embodiment as viewed from the bottom side.

[0037] Figure 4 This is an explanatory diagram of the structure of the plate of the body position changing device in the first embodiment as seen from the bottom surface side.

[0038] Figure 5 This is a perspective view of the mattress device according to the first embodiment as viewed from the bottom surface side.

[0039] Figure 6 This is a perspective view showing a flat state in which air is not supplied to the fluid bag in the first embodiment.

[0040] Figure 7 This is a perspective view showing an expanded state in which air is supplied to the fluid bag in the first embodiment.

[0041] Figure 8 yes Figure 7 Cross-sectional view along line VIII-VIII.

[0042] Fig. 9 This is a flowchart illustrating the operation of the body position changing device in the first embodiment to change the body position of the care receiver.

[0043] Fig.10 1 is a schematic diagram showing the body position of the care receiver in a flat state in which air is not supplied to the fluid bag in the first embodiment.

[0044] Fig.11 1 is a schematic diagram showing the body position of the care receiver when the left shoulder fluid bag is inflated in the first embodiment.

[0045] Fig.121 is a schematic diagram showing the body position of the care receiver when the left dorsal fluid bag is inflated in the first embodiment.

[0046] Fig.13 It is a perspective view showing the overall structure of the bed device in the first embodiment.

[0047] Fig.14 1 is a schematic diagram showing the differences between the body position changing device in the second embodiment of the present invention and the first embodiment.

[0048] Fig.15 1 is a schematic diagram showing the differences between the body position changing device in the third embodiment of the present invention and the second embodiment.

[0049] Fig.16 1 is a schematic diagram showing the differences between the body position changing device in the fourth embodiment of the present invention and the second embodiment.

[0050] Fig.17 This is an explanatory diagram of the structure of the body position changing device in the fifth embodiment of the present invention as viewed from the bottom side.

[0051] Fig.18 This is an exploded perspective view of the structure of the mattress device according to the fifth embodiment as viewed from the bottom surface side.

[0052] Fig.19 This is a perspective view of the mattress device according to the fifth embodiment as viewed from the bottom surface side.

[0053] Fig. 20 1 and 2 are plan views showing (A) a shoulder fluid bag, (B) a back fluid bag, and (C) a waist fluid bag in a flat state to which air is not supplied in the fifth embodiment.

[0054] Fig.21 1 and 2 are plan views showing (A) a back fluid bag and (B) a waist fluid bag having an inflation limiting portion in a flat state to which air is not supplied in a fifth embodiment. DETAILED DESCRIPTION

[0055] (First Embodiment)

[0056] The first embodiment of the present invention is described in detail below with reference to the accompanying drawings. Although the description is made with reference to the accompanying drawings as needed, the contents of the drawings are only schematically and illustratively shown for the purpose of understanding the present invention, and the appearance and dimensional ratios may be different from the actual objects. That is, the configuration of the present invention is not limited to the configuration of the first embodiment described below.

[0057] (Overall structure of mattress device)

[0058] Figure 1is a perspective view showing the overall structure of the mattress device 8 according to the present embodiment. Figure 2 This is an exploded perspective view of the structure of the mattress device in this embodiment as viewed from the bottom side. Fig.13 2 is a perspective view showing the overall structure of the bed device in this embodiment. Figure 1 As shown, the mattress device 8 is used in a sleeping posture where the care receiver 100 lies supinely on the support surface 8a. The mattress device 8 is suitable for use as a care mattress for caring for the care receiver 100 who has difficulty in performing body movements such as turning over by himself.

[0059] like Figure 1 As shown, the mattress device 8 includes a cushion portion 80 extending in the Y-axis direction and a body position changing device 1 for changing the body position of the care recipient 100. The cushion portion 80 is composed of a plurality of cushions. In addition, the body position changing device 1 is disposed on the bottom surface 8b side of the cushion portion 80, as shown in FIG. Figure 2 As shown in FIG. 1 , movable parts 2 and 4 driven by a control device 6 described later are mounted on a sheet 10. In the mattress device 8, the force of the movable parts 2 and 4 constituting the body position changing device 1 pushes up the care receiver 100 via the cushion part 80, thereby changing the body position of the care receiver 100. Fig.13 As shown, the mattress device 8 is configured to cover the cushion portion 80 and the body position changing device 1 with a cover 86, so that the operation becomes easy and the maintenance efficiency such as the removal of dirt and the disinfection of the surface is improved. In addition, the mattress device 8 can be used as a nursing bed device 9 for nursing people who have difficulty in moving their bodies independently by being installed on a bed structure 91 described later.

[0060] (Pad)

[0061] like Figure 2 As shown in FIG. 1 , the pad portion 80 includes a first pad 81, a second pad 82, and a third pad 83, which are arranged in the order of the first pad 81, the second pad 82, and the third pad 83 from the top along the Z-axis direction. In addition, in the following figures, the X-axis, the Y-axis, and the Z-axis are perpendicular to each other, and the Z-axis is consistent with the vertical direction. In addition, in the following description, "above" refers to the direction in which the pad 81, the second pad 82, and the third pad 83 are arranged from the top along the Z-axis direction. Figure 1 In the shown use state of the mattress device 8, the positive direction relative to the Z axis is the direction of the support surface 8a of the mattress device 8 where the care recipient 100 sleeps, and "down" refers to the negative direction relative to the Z axis, that is, the direction of the bottom surface 8b of the mattress device 8.

[0062] The first pad 81 has a support surface 8a for supporting the care recipient 100. In addition, the second pad 82 has a control device placement hole 85, in which the control device 6 described later is placed. In addition, a sensor 84 such as a piezoelectric element is placed on the third pad 83, which can detect the state of body position change by the change of the pressure applied to the pad by the care recipient. The third pad 83 has a hose cutout 87 for passing the hose of the control device 6 described later to the movable parts 2 and 4.

[0063] The size of the cushion 80 is not particularly limited, but it is preferably a size that allows the person being cared for 100 to sleep in a supine position on the support surface 8a. In the present embodiment, although it is only an example, the cushion 80 has a width of 70 cm to 120 cm in the X-axis direction and 170 cm to 220 cm in the Y-axis direction. In addition, although the thickness of the cushion 80 is not particularly limited, it is preferably a thickness that allows the force of the movable parts 2 and 4 of the body position change device 1 to push up the person being cared for 100 via the cushion 80. In the present embodiment, although it is only an example, the thickness of the cushion 80 in the Z-axis direction is 5 cm to 20 cm. The thickness of the first cushion 81 in the Z-axis direction may also be 0.5 cm to 5 cm. The thickness of the second cushion 82 in the Z-axis direction may also be 4 cm to 10 cm. The thickness of the third cushion 83 in the Z-axis direction may also be 0.5 cm to 5 cm.

[0064] The materials constituting the cushion part 80 (the first cushion part 81, the second cushion part 82 and the third cushion part 83) are not particularly limited as long as they are materials having cushioning properties. Resin foam, three-dimensional mesh structure and cotton molded body, or air cushion can be used. Preferably, resin foam, three-dimensional mesh structure and cotton molded body are used alone or in combination. From the viewpoint of ease of operation and processing, the material constituting the cushion part 80 is more preferably resin foam. As the resin foam, specifically, foamed polyurethane, foamed polyolefin or foamed silicone can be cited. In addition, the first cushion part 81, the second cushion part 82 and the third cushion part 83 can be the same material or different materials. In addition, the hardness or rebound characteristics of the first cushion part 81, the second cushion part 82 and the third cushion part 83 can be selected according to the performance of the cushion part 80, but from the viewpoint of the transmission efficiency of the lifting action of each movable part of the body position change device 1, the cushion part 80 preferably has the third cushion part 83 with the maximum hardness or rebound characteristics.

[0065] (Body Position Changing Device)

[0066] Figure 3 This is an explanatory diagram of the structure of the body position changing device in this embodiment as viewed from the bottom side. Figure 4 1 is an explanatory diagram of the structure of the plate of the body position changing device in this embodiment as viewed from the bottom side. The body position changing device 1 is arranged on the lower side of the bottom surface 8b of the third pad 83. Figure 3 and Figure 4 As shown, the body position changing device 1 is provided with a left side plate 3 and a left side movable part 2 on the left side of the lower surface 10a of the thin plate 10. In addition, a right side plate 5 and a right side movable part 4 are provided on the right side of the lower surface 10a of the thin plate 10. In this way, by installing the left side plate 3, the left side movable part 2, the right side plate 5 and the right side movable part 4 on the thin plate 10, the body position changing device 1 can be easily operated in an integrated state while the left side plate 3, the left side movable part 2, the right side plate 5 and the right side movable part 4 are maintained at their respective configured positions. In addition, the left side plate 3, the left side movable part 2, the right side plate 5 and the right side movable part 4 can also be directly provided on the bottom surface 8b of the pad 80 without passing through the thin plate 10. The thin plate 10 has fixing parts 11 at both ends in the X-axis direction, which can be fixed to the pad 80. The fixing member 11 is not particularly limited as long as it can be fixed to the cushion 80 or the cover 86, but it is preferably a detachable fixing mechanism so that the cushion 80 or the cover 86 can be separated from the body position change device 1 during maintenance such as cleaning and washing of the mattress device. As such a fixing member 11, for example, a surface fastener can be exemplified. In addition, the body position change device 1 may not have a fixing member 11, and may be arranged on the bottom surface of the cushion 80 in a non-fixed state. Although not shown in the figure, it is preferred that a cutout 12 for a hose is formed on the thin plate 10 so that a hose of the control device 6 described later can be passed to the movable part. In the present embodiment, the shape of the thin plate 10 is the same as the shape of the bottom surface of the cushion 80, but it may also be other shapes that can be configured with the left side plate 3, the left movable part 2, the right side plate 5, and the right movable part 4. For example, the thin plate 10 may also be a structure that is independently divided into left and right. In addition, in this specification, "left" and "right" are defined by setting the positive direction of the X-axis as "left" and the negative direction as "right", and are viewed from the bottom side. Figure 3 The mattress device 8 is shown in the normal usage state with a care receiver 100 in a supine position.

[0067] like Figure 2 As shown, the left movable part 2 has a left shoulder fluid bag 22 that becomes a left shoulder movable part, a left back fluid bag 24 that becomes a left back movable part, and a left waist fluid bag 26 that becomes a left waist movable part. In addition, the right movable part 4 has a right shoulder fluid bag 42 that becomes a right shoulder movable part, a right back fluid bag 44 that becomes a right back movable part, and a right waist fluid bag 46 that becomes a right waist movable part. These fluid bags are bag-shaped and can be expanded by allowing fluid to flow into the inside from a supply port provided on the fluid bag and contracted by exhausting gas, but their shapes are not particularly limited. However, in the present embodiment, the fluid bags are each roughly square bags when viewed from above in a flat state without fluid being supplied (refer to Figures 6 to 8 The shape of the fluid bag in this embodiment is not limited thereto, and may be a suitable shape such as a rectangle, a circle, an ellipse, etc. In addition, the fluid flowing into the fluid bag may be a gas or a liquid, but preferably a gas such as air is used.

[0068] Figure 3 The configuration of the components constituting the body position changing device 1 is shown. Figure 4 The figure shows a state where the plates (left plate 3 and right plate 5) are mounted on the thin plate 10 in the body position changing device 1. Figure 5 The entire bottom surface side of the mattress device 8 according to the present embodiment is shown in a perspective view. Figures 3 to 5 All show the state viewed from the bottom side.

[0069] like Figure 3 As shown, the left shoulder fluid bag 22 is arranged at a position corresponding to the shoulder joint 122 on the left side of the care recipient 100 in a supine position in the use state. Therefore, by inflating the left shoulder fluid bag 22, the shoulder joint 122 on the left side of the care recipient 100 can be lifted upward (in the positive direction of the Z axis). In addition, the left back fluid bag 24 is arranged at a position corresponding to the back 124 on the left side of the care recipient in the supine position. The left back fluid bag 24 has a first bag 241 arranged on the head side and a second bag 242 arranged on the foot side. Therefore, by inflating the first bag 241 and the second bag 242 of the left back fluid bag 24, the back 124 on the left side of the care recipient 100 can be lifted upward (in the positive direction of the Z axis) as a whole. In addition, in this specification, "head side" and "foot side" are defined by setting the positive direction of the Y axis as the "head side" and the negative direction as the "foot side".

[0070] In addition, as the position of the left shoulder fluid bag 22 corresponding to the left shoulder joint, the peripheral edge of the left shoulder fluid bag 22 is arranged at a position overlapping with at least a portion of the area of ​​the left shoulder joint when viewed from above (when viewed in the positive direction of the Z axis), and it is most preferred that the highest expansion portion of the left shoulder fluid bag 22 (the highest portion when inflated by the fluid being supplied) is arranged at the position of the fitting portion between the acromion and the upper arm bone of the care recipient 100, but it may also be arranged on the outside in the width direction of the pad closer to the position of the fitting portion. In particular, in the present embodiment in which the left shoulder joint of the left side of the care receiver 100 is pushed up by inflating the left shoulder fluid bag 22 via the pad 80, when the pad 80 is pushed up by the left shoulder fluid bag 22, due to the flexural deformation and surface support force generated by the bending rigidity, as long as it is in a position that overlaps with at least a portion of the area of ​​the left shoulder joint when viewed from above (when viewed in the positive direction of the Z axis), even if it is arranged close to the outer side in the width direction of the pad, by opening the shoulder blades of the care receiver 100 and making the back slightly arched (marched) in the shoulder width direction (the direction in which the body position is desired to be changed), the body position can be changed in a natural posture, and the effect of reducing the discomfort of the care receiver can be easily obtained. On the other hand, if the left shoulder fluid bag 22 is too close to the spine side of the care receiver 100 (the center side in the width direction of the pad), the effect of opening the care receiver's shoulder blades and making the back slightly arched in the shoulder width direction (the direction in which the body position is desired to change) is sometimes reduced, and the body position change in the natural posture becomes difficult, and the effect of reducing the care receiver's discomfort is also reduced. Therefore, it is important to configure it in a position where the effect of opening the care receiver's shoulder blades and making the back slightly arched in the shoulder width direction (the direction in which the body position is desired to change) can be fully exerted.

[0071] As the position of the left back fluid bag 24 corresponding to the left back portion 124, the peripheral edge of the left back fluid bag 24 is arranged at a position overlapping at least a portion of the left back portion 124 defined above in a plan view (when viewed in the positive direction of the Z axis). In addition, the left back fluid bag 24 is arranged at a position that does not hinder the expansion of the left shoulder fluid bag 22 in a positional relationship with the left shoulder fluid bag 22, and does not interfere with the expansion of the left shoulder fluid bag 22 when the left back fluid bag 24 is expanded.

[0072] In addition, the left waist fluid bag 26 is arranged at a position corresponding to the left waist 126 of the care recipient in the supine position. The left waist fluid bag 26 has a first bag 261 arranged on the head side and a second bag 262 arranged on the foot side. Therefore, by inflating the first bag 261 and the second bag 262 of the left waist fluid bag 26, the entire left waist 126 of the care recipient 100 can be lifted upward (in the positive direction of the Z axis). Here, the left waist of the care recipient 100 refers to an area corresponding to the position of the lumbar spine and the pelvis. In addition, the so-called arrangement at a position corresponding to the left waist refers to a position where the peripheral edge of the left waist fluid bag overlaps with at least a portion of the area of ​​the left waist defined above when viewed from above (when viewed in the positive direction of the Z axis). From the viewpoint of efficiently lifting the entire left waist 126 of the care receiver 100 upward (in the positive direction of the Z axis), the left waist fluid bag 26 is preferably arranged at the position of the pelvis of the care receiver, but in the present embodiment, in which the left waist 126 of the care receiver 100 is pushed up via the pad 80, the pad 80 can be arranged at a position close to the lumbar spine because the surface support force generated by the bending rigidity acts when the pad 80 is pushed up by the left waist fluid bag 26. In addition, the left waist fluid bag 26 is arranged at a position that does not hinder the expansion of the left back fluid bag 24 in the positional relationship with the left back fluid bag 24.

[0073] The right movable part 4 is arranged symmetrically with the left movable part 2 with the center line C as the axis of symmetry. The right shoulder fluid bag 42 is arranged at a position corresponding to the shoulder joint part 142 on the right side of the care recipient 100 who is in a supine position in a normal use state. Therefore, by inflating the right shoulder fluid bag 42, the shoulder joint part 142 on the right side of the care recipient 100 can be lifted upward (in the positive direction of the Z axis). In addition, the right back fluid bag 44 is arranged at a position corresponding to the back 144 on the right side of the care recipient in a supine position. The right back fluid bag 44 has a first bag 441 arranged on the head side and a second bag 442 arranged on the foot side. Therefore, by inflating the first bag 441 and the second bag 442 of the right back fluid bag 44, the back 144 on the right side of the care recipient 100 can be lifted upward as a whole (in the positive direction of the Z axis). In addition, regarding the preferred embodiment of configuring the right shoulder fluid bag 42 at a position corresponding to the right shoulder joint portion, and the preferred embodiment of configuring the right back fluid bag 44 at a position corresponding to the right back, the contents are the same as replacing left and right in the above-mentioned description of configuring the left shoulder fluid bag 22 at a position corresponding to the left shoulder joint portion and the description of configuring the right back fluid bag 44 at a position corresponding to the right back.

[0074] In addition, the right waist fluid bag 46 is arranged at a position corresponding to the right waist 146 of the care receiver in the supine position. The right waist fluid bag 46 has a first bag 461 arranged on the head side and a second bag 462 arranged on the foot side. Therefore, by inflating the first bag 461 and the second bag 462 of the right waist fluid bag 46, the entire right waist 146 of the care receiver 100 can be lifted upward (in the positive direction of the Z axis). In addition, the description of the position of the right waist, the position of the right waist fluid bag 46 arranged at the position corresponding to the right waist, and its preferred embodiment are the same as the content of replacing left and right in the above description of the left waist fluid bag 26 arranged at the position corresponding to the left waist.

[0075] The material constituting each fluid bag is formed of a non-air-permeable sheet material that does not allow fluids such as air or water to pass through. From the viewpoint of forming a substantially square bag shape by bonding its four sides by crimping or the like, the fluid bag preferably uses a thermoplastic synthetic resin film such as polyurethane, polyethylene, polypropylene, polyvinyl chloride, nylon, and polyester. In this embodiment, from the viewpoint of flexibility and weldability (adhesiveness), a polyurethane film is used for the sheet material. In addition, bonding also includes bonding using an adhesive.

[0076] The size of each fluid bag is not particularly limited, but preferably has a height of 3 cm to 10 cm in the Z-axis direction when the fluid bag is inflated, and preferably has a size that pushes up the care recipient 100 via the pad 80. From the perspective of reducing the discomfort caused to the care recipient, the shoulder fluid bags (left shoulder fluid bag 22 and right shoulder fluid bag 42) are each configured to be smaller than the back fluid bags (left back fluid bag 24 and right back fluid bag 44). Although it is just an example, one side of each shoulder fluid bag in a flat state is 10 cm to 20 cm, and one side of each of the first bag and the second bag of the back fluid bag in a flat state is 15 cm to 30 cm. In addition, the waist fluid bags (left waist fluid bag 26 and right waist fluid bag 46) are configured the same as the back fluid bags.

[0077] (plate)

[0078] like Figure 3 and Figure 4 As shown, the left side plate 3 comprises: a left shoulder plate 32 having a plane facing the left shoulder joint 122; a left back plate 34 having a plane facing the back 124; and a left waist plate 36 having a plane facing the waist 126.

[0079] The left shoulder plate 32 and the left back plate 34 are substantially rectangular, with a long side along the Y axis and a short side along the X axis. Figure 3As shown, the left shoulder plate 32 is arranged between the left shoulder joint 122 and the left shoulder fluid bag 22. The left back plate 34 is arranged between the left back 124 and the left back fluid bag 24. In addition, the left waist plate 36 is divided into a first plate piece 361 and a second plate piece 362, the first plate piece 361 is arranged on the head side, and the second plate piece 362 is arranged on the foot side.

[0080] The right side plate 5 is arranged symmetrically with the left side plate 3 with the center line C as the symmetry axis. Figure 4 As shown, the right side plate 5 comprises: a right shoulder plate 52 , wherein the right shoulder plate 52 has a plane facing the shoulder joint portion 142 ; a right back plate 54 , wherein the right back plate 54 has a plane facing the back 144 ; and a right waist plate 56 , wherein the right waist plate 56 has a plane facing the waist 146 .

[0081] The right shoulder plate 52 and the right back plate 54 are substantially rectangular, with a long side along the Y axis and a short side along the X axis. Figure 5 As shown, the right shoulder plate 52 is arranged between the right shoulder joint 142 and the right shoulder fluid bag 42. The right back plate 54 is arranged between the right back 144 and the right back fluid bag 44. In addition, the right waist plate 56 is divided into a first plate piece 561 and a second plate piece 562, the first plate piece 561 is arranged on the head side, and the second plate piece 562 is arranged on the foot side.

[0082] The method of attaching the panels (left shoulder panel 32, left back panel 34, left waist panel 36, right shoulder panel 52, right back panel 54 and right waist panel 56) to the thin panel 10 is not particularly limited. For example, the panels can be attached to the facing surfaces 37 and 57 (see FIG. 1 ) of the care recipient 100 using double-sided tape. Figure 2 ) is pasted on the thin plate 10, and a hook can also be used to be installed on the hook provided on the thin plate 10. In the present embodiment, double-sided tape is used to paste the fluid bags corresponding to the plates (left shoulder fluid bag 22, left back fluid bag 24, left waist fluid bag 26, right shoulder fluid bag 42, right back fluid bag 44 and right waist fluid bag 46). The material constituting each plate is formed by a thin plate with rigidity. As the material constituting the plate, a plastic plate is preferably used, but plate-like components such as an aluminum plate, a carbon fiber laminated plate sheet, etc. can also be used. In addition, the size of the plate is not particularly limited, and when viewed from above along the Z-axis direction, it can be smaller or larger than the fluid bag. In addition, the shape of the plate can be appropriately selected and used as long as it allows the expansion force of the fluid bag to effectively act on the pad and does not hinder the position change operation.

[0083] As described above, by arranging plates (left shoulder plate 32, left back plate 34, left waist plate 36, right shoulder plate 52, right back plate 54 and right waist plate 56) respectively between the care receiver 100 and the fluid bags (left shoulder fluid bag 22, left back fluid bag 24, left waist fluid bag 26, right shoulder fluid bag 42, right back fluid bag 44 and right waist fluid bag 46), the force generated by the expansion of the fluid bags can be effectively applied to the care receiver 100 via the plates, and the facing surfaces 37 of the plates can be used to more stably support the care receiver 100 and the pad component 80 during the position change operation.

[0084] The arrangement of the plate and the movable part is not limited to the above arrangement as long as it corresponds to each part of the care receiver 100. Figure 3 As shown, on the left side of the body position changing device 1, the corners of the first bag 241 and the second bag 242 of the left back fluid bag 24 overlap partially and are arranged side by side along the Y-axis direction. The left back plate 34 is arranged across the first bag 241 and the second bag 242. Since the head 110 of the care recipient 100 does not overlap with the fluid bag, the care recipient 100 can change the body position more comfortably. In addition, the configuration on the right side of the body position changing device 1 is also the same as the configuration on the left side. The fluid bag can be configured so that a portion of the peripheral portion of the fluid bag overlaps a portion of the peripheral portion of the adjacent fluid bag, but preferably the expansion and contraction of the fluid bags are not hindered by each other. Preferably, the fluid bags are arranged so that adjacent fluid bags do not contact and interfere with each other during the expansion and contraction process caused by the intake and exhaust of the fluid. When the fluid bag expands by supplying fluid, the thickness in the Z-axis direction increases and the width in the X-axis and Y-axis directions decreases. Therefore, the reduction in the width in the X-axis and Y-axis directions during expansion can also be considered, and the degree of overlap of the peripheral edges of adjacent fluid bags when they are overlapped can be designed so as not to hinder the expansion and contraction of the fluid bags.

[0085] In addition, if Figure 3 As shown, on the left side of the body position changing device 1, a portion of the corner of the left shoulder fluid bag 22 overlaps closer to the floor side (below) than the overlapping portion of the corners of the first bag 241 and the second bag 242. As long as the overlapping manner of the left shoulder fluid bag 22, the first bag 241 and the second bag 242 does not hinder the expansion and contraction of each fluid bag, other overlapping manners and overlapping orders may be adopted. The left shoulder plate 32 extends from the left shoulder joint of the care recipient 100 to the left elbow. Therefore, the left arm can be lifted together with the shoulder joint 122 on the left side of the care recipient 100, and the body position can be changed well. The structure of the right side of the body position changing device 1 is also the same as that of the left side.

[0086] And, if Figure 3As shown, on the left side of the body position changing device 1, the first bag 261 and the second bag 262 of the left waist fluid bag 26 are arranged side by side along the Y-axis direction. Since the second bag 242 arranged on the leg side can also lift the buttocks and thighs of the person being cared for 100, the person being cared for 100 can be more reliably changed in body position. The configuration on the right side of the body position changing device 1 is also the same as that on the left side. In addition, the left waist plate 36 and the right waist plate 56 are each divided into a first plate 361, 561 and a second plate 362, 562. The division position of the first plate 361, 561 and the second plate 362, 562 is arranged near the approximate middle of the Y-axis direction of the body position changing device 1. By configuring in this way, even if the body position changing device 1 is used together with a bed structure with a tilting function, the tilting function will not be hindered. In addition, when the tilting operation is not required, the left waist plate 36 and the right waist plate 56 can also be configured to be undivided.

[0087] The surfaces of the left shoulder plate 32, the left back plate 34, the left waist plate 36 (the first plate 361 and the second plate 362), the right shoulder plate 52, the right back plate 54, and the right waist plate 56 (the first plate 561 and the second plate 562) are covered by a plate mounting sheet member, and the plate mounting sheet member is fixed to the lower surface 10a of the thin plate 10, so that each plate is mounted to the thin plate 10, and a hook is provided on the surface of the plate mounting sheet member on the fluid bag mounting side. On the other hand, hooks are also provided on the surfaces of the fluid bags (the left shoulder fluid bag 22, the left back fluid bag 24, the left waist fluid bag 26, the right shoulder fluid bag 42, the right back fluid bag 44, and the right waist fluid bag 46), and the fluid bags are each mounted on the board by the hooks of these fluid bags and the hooks of the boards being fixed to each other. In addition, when the surface of each plate is covered with a cover and mounted on the thin plate 10, it can also be mounted on the upper surface side (opposite side of the lower surface 10a) of the thin plate 10. In this case, the hook for mounting the fluid bag is not provided on the plate mounting sheet member covering each plate, but is provided on the surface (lower surface 10a) of the side where each plate is not mounted on the thin plate 10. From the viewpoint of fixation with the thin plate 10, the material of the plate mounting sheet member is preferably the same as the material of the fixed portion of the thin plate 10, but there is no particular limitation as long as it can be fixed to the thin plate 10.

[0088] (Control device)

[0089] like Figure 5As shown, the body position changing device 1 has a control device 6 for controlling the expansion and contraction of the fluid bag. The control device 6 is configured to be able to switch between a body position changing mode and a static state mode for changing the body position of the care recipient by means of a switch or the like. In the body position changing mode, a control valve and a pump (not shown) are controlled to supply and exhaust air to the fluid bag in a predetermined sequence. Thus, the expansion and contraction of the fluid bag are controlled, and the body position of the care recipient 100 can be changed. The control device 6 is arranged in a control device arrangement hole 85 (see FIG. 1 ) formed in the second pad. Figure 2 ) is inside. The control device 6 is connected to a hose that becomes a fluid flow path for allowing air (fluid) to flow into / out of each fluid bag. The following description will be made by taking the fluid as air as an example.

[0090] The hose is arranged according to the type of the fluid bag. That is, the supply port 23 of the left shoulder fluid bag 22 is connected to the hose 622, the supply ports 25 of the two left back fluid bags 24 are connected to the hose 624, and the supply ports 27 of the two left waist fluid bags 26 are connected to the hose 626. In addition, the supply port 43 of the right shoulder fluid bag 42 is connected to the hose 642, the supply ports 45 of the two right back fluid bags 44 are connected to the hose 644, and the supply ports 47 of the two right waist fluid bags 46 are connected to the hose 626. The control device 6 is electrically connected to a power supply not shown in the figure, and can be driven by starting the pump and expanding and contracting the respective fluid bags via the respective hoses. In addition, each hose is provided with a valve that can switch the open state of air circulation via the flow path and the closed state of cutting off the air circulation. In addition, each supply port functions as an exhaust port when the air in the fluid bag is discharged.

[0091] The control device 6 can inflate the left shoulder fluid bag 22 independently of other fluid bags by supplying air to the left shoulder fluid bag 22 via the hose 622. In this state, by closing the valve 722 provided on the hose 622, the flow path can be maintained in a state where the left shoulder fluid bag 22 is inflated. The control device 6 can inflate the left back fluid bag 24 independently of other fluid bags by supplying air to the left back fluid bag 24 via the hose 624. In this state, by closing the valve 724 provided on the hose 624, the flow path can be maintained in a state where the left back fluid bag 24 is inflated. The control device 6 can inflate the left waist fluid bag 26 independently of other fluid bags by supplying air to the left waist fluid bag 26 via the hose 626. In this state, by closing the valve 726 provided on the hose 626, the flow path can be maintained in a state where the left waist fluid bag 26 is inflated. Furthermore, by opening the valves 722, 724, and 726, the supply ports of the left shoulder fluid bag 22, the left back fluid bag 24, and the left waist fluid bag 26 function as exhaust ports to exhaust the air supplied thereto, thereby achieving a flat state.

[0092] The control device 6 can inflate the right shoulder fluid bag 42 independently of other fluid bags by supplying air to the right shoulder fluid bag 42 via the hose 642. In this state, by closing the valve 742 provided on the hose 642, the flow path can be maintained in a state where the right shoulder fluid bag 42 is inflated. The control device 6 can inflate the right back fluid bag 44 independently of other fluid bags by supplying air to the right back fluid bag 44 via the hose 644. In this state, by closing the valve 744 provided on the hose 644, the flow path can be maintained in a state where the right back fluid bag 44 is inflated. The control device 6 can inflate the right waist fluid bag 46 independently of other fluid bags by supplying air to the right waist fluid bag 46 via the hose 646. In this state, by closing the valve 746 provided on the hose 646, the flow path can be maintained in a state where the right waist fluid bag 46 is inflated. Furthermore, by opening the valves 742, 744, and 746, the supply ports of the right shoulder fluid bag 42, the right back fluid bag 44, and the right waist fluid bag 46 function as exhaust ports to exhaust the air supplied thereto, thereby achieving a flat state.

[0093] (Fluid Bag)

[0094] Figure 6 is a perspective view showing a flat state in which air is not supplied to the fluid bag. Figure 7 is a perspective view showing an expanded state in which air is supplied to the fluid bag. Figure 8 is a cross-sectional view showing the internal structure of the fluid bag in an expanded state. Figures 6 to 8 In the description, the structure of the fluid bag is described by taking the left back fluid bag 24 as an example, but the same is true for other fluid bags.

[0095] like Figure 6 As shown, the left back fluid bag 24 is connected to the hose 624 that becomes the fluid flow path of air at the supply port 25. Figure 7 As shown, the left back fluid bag 24 is inflated by supplying air from the hose 624 attached to the supply port 25, and the supply port 25 functions as an exhaust port and contracts to return to the original flat state when the air is discharged. Figure 6 and Figure 7 As shown, the corners of the left back fluid bag 24 are pressed and the internal space is octagonal in plan view. The pressure resistance of the left back fluid bag 24 is improved by the octagonal internal space.

[0096] In addition, if Figure 8As shown, it is preferred that a plurality of expansion limiting portions 24c are provided inside the left back fluid bag 24, which connect the upper surface 24a and the lower surface 24b on the inner surface. The left back fluid bag 24 can limit the distance between the upper surface 24a and the lower surface 24b in the expanded state by the expansion limiting portion 24c, and form a substantially flat area at the top of the upper surface side and the lower surface side in the expanded state. Therefore, the board can be stably supported, and the bottom surface of the cushion portion can be effectively pushed up, thereby implementing body position change. In addition, by providing the expansion limiting portion 24c, it is also possible to improve the strength of the left back fluid bag 24 itself. The material of the expansion limiting portion 24c is preferably a soft material that can be flattened together with the upper surface 24a and the lower surface 24b in the flat state, and is a material that can limit the distance between the upper surface 24a and the lower surface 24b in the expanded state. For example, the expansion limiting portion 24c can be composed of the same material as the material constituting the fluid bag, or it can be composed of a different material. In addition, the shape of the expansion limiting portion 24c is preferably a film shape, so that it is easy to become a flat state when air is discharged from the fluid bag. The right back fluid bag 44 , the left waist fluid bag 26 , and the right waist fluid bag 46 may be provided with similar inflation limiting portions.

[0097] (Posture change action)

[0098] Fig. 9 1 is a flowchart for explaining the operation of changing the body position of care receiver 100 by body position changing device 1 in the present embodiment. Fig.10 2 is a schematic diagram showing the body position of the care receiver 100 in a flat state in which air is not supplied to the fluid bag in the present embodiment. Fig.11 2 is a schematic diagram showing the body position of the care receiver 100 when the left shoulder fluid bag 22 is inflated in this embodiment. Fig.12 1 is a schematic diagram showing the body position of the care receiver 100 when the left back fluid bag 24 is inflated in this embodiment. Figures 9 to 12 , the body position changing action of care receiver 100 using body position changing apparatus 1 will be described.

[0099] When the body position changing device 1 is started, the control device 6 drives the valve and the pump to expand and contract the fluid bag, thereby automatically changing the body position of the person being cared for 100 who is lying on his back without the help of a caregiver or the like. The body position changing action is to drive a single shoulder fluid bag, for example, the left shoulder bag, to expand the fluid bag, thereby lifting the left shoulder joint of the person being cared for 100 who is lying on his back. In this state, at least the left back fluid bag is driven to expand, thereby lifting the left side of the back. In this way, the person being cared for 100 can change his body position in a natural posture. In addition, in the present embodiment, the body position changing action is described in which the left half of the body 120 of the person being cared for 100 is lifted up for body position change and then the right half of the body 140 is lifted up for body position change, but the order may also be reversed. In addition, in Figures 10 to 12 For the sake of convenience in explanation, the pad portion 80 and the like are omitted.

[0100] like Fig.10 As shown in FIG. 1 , when the control device 6 does not start control, all valves are open and the body position changing device 1 is in a non-expanded flat state. That is, the air in each fluid bag is exhausted and the care receiver 100 is in a supine position facing upward. When the body position change starts, the control device 6 supplies air to the left shoulder fluid bag 22 to expand the left shoulder fluid bag 22 ( Fig. 9 In this state, the control device 6 turns the valve 722 ( Figure 5 ) is switched to the closed state, cutting off the air supply to the left shoulder fluid bag 22, and maintaining the expanded state of the left shoulder fluid bag 22 (step S2). Fig.11 As shown in FIG. 1 , the shoulder joint 122 on the left side of the care receiver 100 corresponding to the left shoulder fluid bag 22 is lifted, and the shoulder joint 122 is inclined at an angle θ1. Fig.11 As shown, from the perspective of reducing discomfort to the person being cared for 100 and performing natural turning over, the angle θ1 of the shoulder joint raised from the position S of the back in a flat state is preferably greater than 0° and less than or equal to 20°, and more preferably 1° to 6°.

[0101] Next, the control device 6 simultaneously supplies air to the left back fluid bag 24 and the left waist fluid bag 26 to inflate the left back fluid bag 24 and the left waist fluid bag 26 (step S3). Figure 5 ) is switched to the closed state, and the air supply to the left back fluid bag 24 and the left waist fluid bag 26 is cut off, and the left back fluid bag 24 and the left waist fluid bag 26 are maintained in an inflated state (step S4). When the left back fluid bag 24 is inflated, the back 124 of the care receiver 100 on the left side corresponding to the left back fluid bag 24 is lifted. In addition, when the left waist fluid bag 26 is inflated, the waist 126 of the care receiver 100 on the left side corresponding to the left waist fluid bag 26 is lifted.

[0102] Next, the control device 6 causes the valve 724 ( Figure 5 ) is opened, and the left back fluid bag 24 is further inflated (secondary inflation) by supplying air to the left back fluid bag 24 (step S5). In this state, the control device 6 opens the valve 724 ( Figure 5 ) is switched to the closed state, cutting off the air supply to the left back fluid bag 24, and maintaining the expanded state of the left back fluid bag 24 (step S6). Fig.12 As shown in FIG. 1 , the left back 124 of the care receiver 100 corresponding to the left shoulder fluid bag 24 is further lifted, and the back 124 is tilted at an angle θ2. In this way, the left shoulder fluid bag 22 is driven to expand the fluid bag, and the left back fluid bag 24 is driven to expand the left shoulder joint 122 of the care receiver 100 in the supine position is lifted, so that the left back 124 can be lifted, thereby enabling the care receiver 100 to change its position in a natural posture. In addition, from the perspective of a natural turning operation, as shown in FIG. Fig.12 As shown, the angle θ2 of the back which is raised from the position S of the back in the flat state is preferably larger than the angle θ1 and less than or equal to 30°, more preferably 2° to 10°.

[0103] After the back is kept in the inclined position T for a predetermined time (e.g., 10 to 20 seconds), the control device 6 closes the valves 722, 724, and 726 ( Figure 5 ) is opened, and all the left fluid bags (the left shoulder fluid bag 22, the left back fluid bag 24, and the left waist fluid bag 26) are exhausted (step S7). When all the fluid bags are exhausted, the body position changing device 1 returns to the Fig.10 Flat state shown.

[0104] If the position change is not completed, the process shifts to the position change of the right half of the body (step S8). The position change of the right half of the body is performed in the same control as the position change of the left half of the body. That is, the control device 6 supplies air to the right shoulder fluid bag 42 to inflate the right shoulder fluid bag 42 (step S11). In this state, the control device 6 opens the valve 742 ( Figure 5 ) is switched to the closed state, the air supply to the right shoulder fluid bag 42 is cut off, and the right shoulder fluid bag 42 is maintained in an inflated state (step S12). When the right shoulder fluid bag 42 is inflated, the shoulder joint part 142 on the right side of the care receiver 100 corresponding to the right shoulder fluid bag 42 is lifted and tilted.

[0105] Next, the control device 6 simultaneously supplies air to the right back fluid bag 44 and the right waist fluid bag 46 to inflate these right back fluid bag 44 and the right waist fluid bag 46 (step S13). Figure 5) is switched to the closed state, the air supply to the right back fluid bag 44 and the right waist fluid bag 46 is cut off, and the right back fluid bag 44 and the right waist fluid bag 46 are maintained in an inflated state (step S14). When the right back fluid bag 44 is inflated, the back 144 of the care receiver 100 on the right side corresponding to the right back fluid bag 44 is lifted. In addition, when the right waist fluid bag 46 is inflated, the waist 146 of the care receiver 100 on the right side corresponding to the right waist fluid bag 46 is lifted.

[0106] Next, the control device 6 causes the valve 744 ( Figure 5 ) is opened, and the right back fluid bag 44 is further inflated (secondary inflation) by supplying air to the right back fluid bag 44 (step S15). In this state, the control device 6 opens the valve 744 ( Figure 5 ) is switched to the closed state, the air supply to the right back fluid bag 44 is cut off, and the right back fluid bag 44 is maintained in an inflated state (step S16). When the right back fluid bag 44 is inflated, the right side of the back 144 of the care receiver 100 corresponding to the right back fluid bag 44 is further lifted and tilted. The right shoulder fluid bag 42 is driven to inflate the fluid bag, and the right back fluid bag 44 is driven to inflate the right side of the shoulder joint 142 of the care receiver 100 in a supine position is lifted, thereby lifting the right side of the back 144, so that the care receiver 100 can change its position in a natural posture.

[0107] After maintaining this state for a predetermined time (e.g., 10 to 20 seconds), the control device 6 closes the valves 742, 744, and 746 ( Figure 5 ) is opened, and all the right side fluid bags (right shoulder fluid bag 42, right back fluid bag 44 and right waist fluid bag 46) are exhausted (step S17). When all the fluid bags are exhausted, the body position changing device 1 returns to the Fig.10 Without completing the position change, the position change of the left half of the body is further returned to (step S18). In this way, by repeatedly changing the position, even without the help of a caregiver, it is possible to prevent the body weight from being continuously applied to the shoulders, waist, back, and other parts of the care receiver 100 that are prone to bedsores.

[0108] As described above, according to the present embodiment, the movable shoulder part (shoulder fluid bag) and the movable back part (back fluid bag) are configured in an independent and movable manner. By the movable shoulder part (shoulder fluid bag) and the movable back part (back fluid bag) operating in conjunction as described above, the shoulder blades of the person being cared for 100 can be opened, and the back can be slightly arched in the shoulder width direction (the direction in which the body position is desired to be changed), and the back can be pushed up while maintaining this state to change the body position. By changing the body position in this way, a more natural body position change can be made. Moreover, by making the movable back part (back fluid bag) and the movable waist part (waist fluid bag) operate in conjunction as described above, by changing the body position of the waist at the same time as the back, the lower body of the person being cared for 100 can also be tilted together, and bedsores can be prevented more effectively and aggravated. By such a body position change, a body position change based on a natural posture can be made, so the discomfort of the person being cared for 100 can be reduced. In addition, in the present embodiment, the operation of further inflating the left back fluid bag 24 (secondary inflation) (step S5) and the operation of further inflating the right back fluid bag 44 (secondary inflation) (step S15) are performed, but the posture change action without performing these secondary inflation operations may also be performed. In addition, the exhaust from the fluid bag may be natural exhaust or forced exhaust with an additional suction mechanism.

[0109] In addition, when the body position changing device 1 is not changing the body position, all valves are opened and all fluid bags are in a flat state. Therefore, for example, even if the control device 6 does not work due to a power outage or the like, the person being cared for 100 will not be placed in a tilted posture, thereby improving the safety of the medical or nursing site. In particular, in the present embodiment, a cushion portion 80 is arranged between the body position changing device 1 and the person being cared for 100. The resin foam that is particularly suitable for the cushion portion 80 can properly support the person being cared for 100 due to its own cushioning properties, so that even if the control device 6 does not work due to a power outage or the like, the safety is extremely high.

[0110] (Bed device)

[0111] like Fig.13 As shown, the mattress device 8 of this embodiment can be used as a bed device 9 by being mounted on a bed structure 91. The mattress device 8 is easy to operate by covering the cushion portion 80 and the body position changing device 1 with a cover 86, and is easy to mount on the bed structure 91. In addition, the bed structure 91 may also have a tilting function. Such a bed device 9 is suitable for use as a nursing bed for nursing a person who is difficult to move independently, such as a person who needs nursing.

[0112] In addition, the bed device 9 may also be a bed device with a body position changing function in which the body position changing device 1 is placed independently of the cushion portion 80 or assembled on the bed board portion (the portion on which the mattress is placed) of the bed structure 91. When an existing mattress is placed on the bed device 9 with this configuration and the body position changing device 1 is operated, the mattress is pushed up and the body position change can be performed.

[0113] (Second Embodiment)

[0114] In the second embodiment, the configuration of the body position changing device is different from that of the first embodiment. Hereinafter, the configuration of this embodiment that is different from the first embodiment will be mainly described. The configuration of this embodiment whose description is omitted is the same as that of the first embodiment.

[0115] Fig.14 Schematically shows the structure of the body position changing device 1a of this embodiment that is different from that of the first embodiment. Fig.14 As shown, in this embodiment, the shoulder fluid bags (left shoulder fluid bag 22 and right shoulder fluid bag 42) are each substantially circular. In addition, the first bag 241 and the second bag 242 of the left back fluid bag 24, and the first bag 441 and the second bag 442 of the right back fluid bag 44 are each substantially elliptical in shape with the Y-axis direction as the major axis and the X-axis direction as the minor axis.

[0116] In addition, on the left side of the body position changing device 1a, the first bag 241 and the second bag 242 of the left back fluid bag 24 are arranged side by side in the X-axis direction. In addition, on the right side of the body position changing device 1a, the first bag 441 and the second bag 442 of the right back fluid bag 44 are arranged side by side in the X-axis direction. By configuring in this way, for example, by inflating the first bag 241, 441 and the second bag 242, 442 in this order, the body of the care receiver is gradually pushed up in the direction (Y direction) of the desired body position change, and the body position change can be adjusted to be more natural. In addition, by inflating the second bag 242, 442 less than the first bag 241, 441, etc., the body position change of the care receiver can be adjusted more variously and appropriately.

[0117] (Third Embodiment)

[0118] In the third embodiment, the configuration of the body position changing device is different from that of the second embodiment. Hereinafter, the configuration of this embodiment that is different from the second embodiment will be mainly described. The configuration of this embodiment whose description is omitted is the same as that of the second embodiment.

[0119] Fig.15: is a diagram schematically showing a structure of the body position changing device 1b of the present embodiment that is different from that of the second embodiment. In the present embodiment, the shoulder fluid bag (left shoulder fluid bag 22 and right shoulder fluid bag 42) is each formed into a roughly elliptical shape with the Y-axis direction as the major axis and the X-axis direction as the minor axis. By configuring in this way, the area of ​​the shoulder fluid bag can be increased, and the body position changing method of the present invention can be reliably performed even if the position of the shoulder of the person being cared for changes. In addition, the body position can be changed while the arm portion of the person being cared for is lifted, and the body position of the person being cared for can be changed smoothly. In addition, the left back fluid bag 24 and the right back fluid bag 44 are each composed of a large, roughly elliptical bag that is not divided. Therefore, in the body position changing device 1b, the height (telescoping stroke) in the Z-axis direction when the back fluid bag is inflated can be increased. In addition, in the body position changing device 1b, the structure of the hose can be made simpler.

[0120] (Fourth Embodiment)

[0121] In the fourth embodiment, the configuration of the body position changing device is different from that of the second embodiment. Hereinafter, the configuration of this embodiment that is different from the second embodiment will be mainly described. The configuration of this embodiment whose description is omitted is the same as that of the second embodiment.

[0122] Fig.16 1 is a diagram schematically showing a configuration of the body position changing device 1c of the present embodiment that is different from that of the second embodiment. In the present embodiment, the left back fluid bag 24 is composed of a substantially rectangular bag that is longer in the Y-axis direction and extends to the left waist of the person being cared for. In addition, the right back fluid bag 44 is composed of a substantially rectangular bag that is longer in the Y-axis direction and extends to the right waist of the person being cared for. In the present embodiment, the left back fluid bag 24 also serves as a left waist fluid bag, and the right back fluid bag 44 also serves as a right waist fluid bag. With such a configuration, even without providing a left waist fluid bag and a right waist fluid bag, body position changes including the waist of the person being cared for can be performed.

[0123] (Fifth Embodiment)

[0124] In the fifth embodiment, the configuration of the body position changing device is different from the first to fourth embodiments described above. Hereinafter, the configuration of this embodiment that is different from the first to fourth embodiments will be mainly described. The configuration of this embodiment whose description is omitted is the same as that of the first to fourth embodiments and uses the same reference numerals.

[0125] (Overall structure of mattress device)

[0126] Fig.17 is an explanatory diagram of the structure of the mattress device in this embodiment as viewed from the bottom surface side. Fig.18This is an exploded perspective view of the structure of the mattress device in this embodiment as viewed from the bottom side. Fig.19 1 and 1 are perspective views of the mattress device in this embodiment as viewed from the bottom side. As shown in these figures, the mattress device 8 is used with the care receiver 100 lying on the support surface 8a. The mattress device 8 is suitable for use as a nursing mattress for caring for the care receiver 100 who has difficulty in performing body operations such as turning over by himself.

[0127] like Figures 17 to 19 As shown, the mattress device 8 includes a cushion portion 80 extending in the Y-axis direction and a body position changing device 1' for changing the body position of the care recipient 100. The body position changing device 1' is disposed on the bottom surface 8b side of the cushion portion 80, and the cushion portion 80 is composed of a plurality of cushions. Fig.18 As shown in FIG. 1 , the body position changing device 1′ is configured by installing movable parts 2′ and 4′ driven by a control device 6 described later on a sheet 10′. In the mattress device 8, the force of the movable parts 2′ and 4′ of the body position changing device 1′ pushes up the care receiver 100 via the cushion part 80, thereby changing the body position of the care receiver 100. The mattress device 8 is different from the first embodiment. Fig.13 The structure shown is the same as that shown in the figure. By using a structure in which the cushion part 80 and the body position changing device 1' are covered with a cover 86, the operation becomes easy, and the maintenance performance such as the removal of dirt and surface disinfection is improved. In addition, by being installed on a bed structure 91 described later, the bed device 9 can be used for nursing care for people who need care and have difficulty in moving their bodies independently.

[0128] (Pad)

[0129] The configuration of the pad portion 80 is the same as that of the first embodiment, and therefore the description thereof will be omitted.

[0130] (Body Position Changing Device)

[0131] like Fig.17 and Fig.18As shown, a body position changing device 1′ is arranged on the lower side of the bottom surface 8b of the third pad 83. The body position changing device 1′ is installed with a left side plate 3′ and a left movable part 2′ on the left side of the lower surface 10a′ of the thin plate 10′. In addition, a right side plate 5′ and a right movable part 4′ are installed on the right side of the lower surface 10a′ of the thin plate 10′. In this way, by installing the left side plate 3′, the left movable part 2′, the right side plate 5′ and the right movable part 4′ on the thin plate 10′, the body position changing device 1′ can be easily operated in an integrated state while the left side plate 3′, the left movable part 2′, the right side plate 5′ and the right movable part 4′ are maintained at their respective configured positions. In addition, the left side plate 3′, the left movable part 2′, the right side plate 5′ and the right movable part 4′ can also be directly installed on the bottom surface 8b of the pad 80 without passing through the thin plate 10′. The thin plate 10' has fixing parts 11' at both ends in the X-axis direction, which can be fixed to the cushion 80 or the cover 86. The fixing parts 11' are not particularly limited as long as they can be fixed to the cushion 80 or the cover 86, but are preferably detachable fixing mechanisms so that the cushion 80 or the cover 86 can be separated from the body position changing device 1' during maintenance such as washing and cleaning of the mattress device. As such fixing parts 11', for example, a surface fastener can be exemplified. In addition, the body position changing device 1' may not have the fixing parts 11', and may be arranged on the bottom surface of the cushion 80 in a non-fixed state. Although not shown in the figure, it is preferred that a notch 12' for a hose for passing a hose of the control device 6 described later to the movable part is formed on the thin plate 10'. In the present embodiment, the shape of the thin plate 10' is the same as the bottom surface shape of the cushion 80, but it may also be other shapes that can be arranged on the left side plate 3', the left side movable part 2', the right side plate 5' and the right side movable part 4'. For example, the thin plate 10' may also be a structure that is independently divided into left and right sides. In this specification, “left” and “right” refer to the positive direction of the X-axis as “left” and the negative direction as “right”, and are used when viewed from the bottom. Fig.17 and Fig.18 The mattress device 8 is shown in the normal usage state with a care receiver 100 in a supine position.

[0132] like Fig.18As shown, the left movable part 2' has a left shoulder fluid bag 22' which becomes a left shoulder movable part, a left back fluid bag 24' which becomes a left back movable part, and a left waist fluid bag 26' which becomes a left waist movable part. In addition, the right movable part 4' has a right shoulder fluid bag 42' which becomes a right shoulder movable part, a right back fluid bag 44' which becomes a right back movable part, and a right waist fluid bag 46' which becomes a right waist movable part. These fluid bags are bag-shaped and can be expanded by allowing fluid to flow into the inside from a supply port provided on the fluid bag and contracted by exhausting gas, but their shapes are not particularly limited. However, in the present embodiment, in a flat state without supplying fluid, the left shoulder fluid bag 22' and the right shoulder fluid bag 42' are bags that are roughly circular when viewed from above. The left back fluid bag 24' and the right back fluid bag 44' are substantially rectangular bags with concave cutouts. The concave cutouts are shaped so that the left shoulder fluid bag 22' and the right shoulder fluid bag 42' can be fitted together in a flat state without fluid supply. In the present embodiment, the concave cutouts are semicircular, and the substantially circular left shoulder fluid bag 22' and the right shoulder fluid bag 42' are fitted together along the shape of the concave cutouts. By forming such a shape, a simple structure can be realized that does not interfere with the lifting effect of the shoulder fluid bag while maintaining the lifting effect caused by the expansion of the back fluid bag. In addition, the exhaust from each fluid bag can be performed by either making each supply port function as an exhaust port or by providing an exhaust port separately.

[0133] In addition, in the present embodiment, the shoulder fluid bags 22' and 42' are formed as bags that are roughly circular when viewed from above in a flat state without fluid supply, and the concave cutouts of the back fluid bags 24' and 44' are formed into semicircular shapes in a manner corresponding to the shapes. However, as long as the above-mentioned effects when the shoulder fluid bags 22' and 42' are arranged in a fitting manner along the shapes of the concave cutouts of the back fluid bags 24' and 44' can be obtained, the shapes that can be arranged in a fitting manner according to the top-view shapes of the shoulder fluid bags 22' and 42' in a flat state without fluid supply can be formed. For example, the above-mentioned shapes of the shoulder fluid bags 22' and 42' can be polygonal shapes such as quadrilaterals, hexagons, and octagons, and the shapes of the concave cutouts of the back fluid bags 24' and 44' can be selected so that the shapes can be arranged in a fitting manner.

[0134] Here, the shoulder fluid bags 22', 42' are arranged in a fitting manner along the shape of the concave cutouts of the back fluid bags 24', 44', including not only a state in which the peripheral edge of the shoulder fluid bags 22', 42' is adjacent to the peripheral edge of the concave cutouts of the back fluid bags 24', 44' in a plan view in a flat state without fluid supply, but also a state in which at least a part of the shoulder fluid bags 22', 42' is arranged in the region of the concave cutouts of the back fluid bags 24', 44' within a range that can obtain the above-mentioned effect of the fitting arrangement. For example, in the case where the shoulder fluid bags 22', 42' are polygonal in shape, in order to make the expansion and deformation of the back fluid bags 24', 44' smoother, the shape of the concave cutouts of the back fluid bags 24', 44' can be a semicircular or arcuate shape. In addition, within the range that the lifting effect caused by the expansion of the back fluid bags 24' and 44' when the fluid is supplied does not interfere with the shoulder lifting effect of the shoulder fluid bags 22' and 42', in a plan view of a flat state in which the fluid is not supplied, a part of the peripheral edge of the left shoulder fluid bag 22' and the right shoulder fluid bag 42' may be arranged to overlap with each other inwardly relative to the concave cutouts of the left back fluid bag 24' and the right back fluid bag 44'. The shapes of the left shoulder fluid bag 22' and the right shoulder fluid bag 42' may also be set.

[0135] The left waist fluid bag 26' and the right waist fluid bag 46' are bags that are roughly rectangular when viewed from above. In the first embodiment, each of the left back fluid bag 24 and the right back fluid bag 44 is composed of two fluid bags, but in the present embodiment, each of the left back fluid bag 24' and the right back fluid bag 44' is composed of a single integrated fluid bag. In addition, in the first embodiment, each of the left waist fluid bag 26 and the right waist fluid bag 46 is composed of two fluid bags, but in the present embodiment, each of the left waist fluid bag 26' and the right waist fluid bag 46' is composed of a single integrated fluid bag. The fluid flowing into the fluid bag may be a gas or a liquid, but preferably a gas such as air is used.

[0136] like Fig.17 As shown, the left shoulder fluid bag 22' is arranged at a position corresponding to the shoulder joint 122 on the left side of the care receiver 100 in a supine position in the use state. Therefore, by inflating the left shoulder fluid bag 22', the shoulder joint 122 on the left side of the care receiver 100 can be lifted upward (in the positive direction of the Z axis). In addition, the left back fluid bag 24' is arranged at a position corresponding to the back 124 on the left side of the care receiver in a supine position. By inflating the left back fluid bag 24', the entire back 124 on the left side of the care receiver 100 can be lifted upward (in the positive direction of the Z axis).

[0137] The left waist fluid bag 26' is arranged at a position corresponding to the left waist 126 of the care receiver in a supine position. By inflating the left waist fluid bag 26', the entire left waist 126 of the care receiver 100 can be lifted upward (in the positive direction of the Z axis).

[0138] The right movable part 4' is arranged symmetrically with the left movable part 2' with the central line C as the axis of symmetry. The right shoulder fluid bag 42' is arranged at a position corresponding to the shoulder joint part 142 on the right side of the care receiver 100 who is in a supine position in a normal state of use. Therefore, by inflating the right shoulder fluid bag 42', the shoulder joint part 142 on the right side of the care receiver 100 can be lifted upward (in the positive direction of the Z axis). In addition, the right back fluid bag 44' is arranged at a position corresponding to the back 144 on the right side of the care receiver in a supine position. By inflating the right back fluid bag 44', the entire back 144 on the right side of the care receiver 100 can be lifted upward (in the positive direction of the Z axis).

[0139] The right waist fluid bag 46' is arranged at a position corresponding to the right waist 146 of the care receiver in the supine position. By inflating the right waist fluid bag 46', the right waist 146 of the care receiver 100 can be lifted upward (in the positive direction of the Z axis) as a whole.

[0140] The material constituting each fluid bag is formed of a non-air-permeable sheet material that does not allow fluids such as air or water to pass through. From the viewpoint of forming a substantially square or substantially circular bag shape by bonding its four sides or circumference by crimping or the like, the fluid bag preferably uses a thermoplastic synthetic resin film such as polyurethane, polyethylene, polypropylene, polyvinyl chloride, nylon, and polyester. In this embodiment, from the viewpoint of flexibility and weldability (adhesiveness), a polyurethane film is used for the sheet material. In addition, bonding also includes bonding using an adhesive.

[0141] Fig. 20 1 is a plan view showing (A) a shoulder fluid bag, (B) a back fluid bag, and (C) a waist fluid bag in a flat state without air supply in this embodiment, Fig.21 1 and 10 are plan views showing (A) a back fluid bag and (B) a waist fluid bag having an inflation limiting portion in a flat state to which air is not supplied in the present embodiment.

[0142] like Fig. 20As shown, the left shoulder fluid bag 22' and the right shoulder fluid bag 42' are bags that are roughly circular when viewed from above in a flat state without fluid supply, and their diameters are only an example, but are approximately 10 to 20 cm, preferably approximately 15 to 17 cm. The left back fluid bag 24' and the right back fluid bag 44' are bags that are roughly rectangular when viewed from above in a flat state without fluid supply, and their sizes are only an example, but the long sides are approximately 30 to 50 cm, preferably approximately 40 cm, and the short sides are approximately 10 to 30 cm, preferably approximately 20 cm. The cutout recess can be any size that can be inserted into the left shoulder fluid bag 22' or the right shoulder fluid bag 42'. The left waist fluid bag 26' and the right waist fluid bag 46' are bags that are roughly rectangular when viewed from above in a flat state without fluid supply, and their sizes are only an example, but the long sides are approximately 30 to 50 cm, preferably approximately 40 cm, and the short sides are approximately 10 to 30 cm, preferably approximately 20 cm. These dimensions are the sizes of the care receiver 100 pushed up via the pad 80 when the fluid bag is inflated. From the viewpoint of reducing discomfort caused to the care receiver, the shoulder fluid bags (left shoulder fluid bag 22′ and right shoulder fluid bag 42′) are constructed to be smaller than the back fluid bags (left back fluid bag 24′ and right back fluid bag 44′).

[0143] (plate)

[0144] Since the structure and mounting method of the plate in this embodiment are the same as those in the first embodiment, the description thereof will be omitted.

[0145] As in the first embodiment, by arranging plates (left shoulder plate 32, left back plate 34, left waist plate 36, right shoulder plate 52, right back plate 54 and right waist plate 56) respectively between the care receiver 100 and the fluid bags (left shoulder fluid bag 22′, left back fluid bag 24′, left waist fluid bag 26′, right shoulder fluid bag 42′, right back fluid bag 44′ and right waist fluid bag 46′), the force generated by the expansion of the fluid bags can be effectively applied to the care receiver 100 via the plates, and the facing surfaces 37 of the plates can be used to more stably support the care receiver and the pad component 80 during the position change operation.

[0146] The arrangement of the plate and the movable part is not limited to the above arrangement as long as it corresponds to each part of the care receiver 100. Fig.17As shown, on the left side of the body position changing device 1′, the left shoulder plate 32 is arranged in a manner overlapping with the left shoulder fluid bag 22′, and the left back plate 34 is arranged in a manner overlapping with a portion of the left back fluid bag 24′. In addition, the left waist plate 36 is arranged in a manner overlapping with the left waist fluid bag 26′. Since the head 110 of the care recipient 100 does not overlap with the fluid bag, the care recipient 100 can change the body position more comfortably. In addition, the configuration on the right side of the body position changing device 1′ is also the same as the configuration on the left side. The fluid bag can be arranged in a manner that a portion of the peripheral portion of the fluid bag overlaps a portion of the peripheral portion of the adjacent fluid bag, but it is preferred that the expansion and contraction of the fluid bags are not hindered by each other. Preferably, the fluid bags are arranged so that adjacent fluid bags do not contact and interfere with each other during the expansion and contraction process caused by the intake and exhaust of the fluid. When the fluid bag expands by supplying fluid, the thickness in the Z-axis direction increases and the width in the X-axis direction and the Y-axis direction decreases. Therefore, the reduction in the width in the X-axis direction and the Y-axis direction during expansion can also be considered, and the degree of overlap of the peripheral portions of adjacent fluid bags when they are partially overlapped can be designed so as not to hinder the expansion and contraction of the fluid bags.

[0147] like Fig.17 As shown, in the body position changing device 1', the left shoulder plate 32 extends from the left shoulder joint of the care receiver 100 to the left elbow. Therefore, the left arm can be lifted together with the left shoulder joint 122 of the care receiver 100, and the body position can be changed well. In addition, the structure of the right side of the body position changing device 1' is also the same as that of the left side.

[0148] And, if Fig.17 As shown, a single left waist fluid bag 26' is arranged on the left side of the body position changing device 1'. Since the left waist fluid bag 26' can also lift the buttocks and thighs of the care receiver 100, the body position of the care receiver 100 can be changed more reliably. In addition, the configuration of the right side of the body position changing device 1' is the same as that of the left side.

[0149] The surfaces of the left shoulder plate 32, the left back plate 34, the left waist plate 36 (the first plate 361 and the second plate 362), the right shoulder plate 52, the right back plate 54, and the right waist plate 56 (the first plate 561 and the second plate 562) are covered by a plate mounting sheet member, and the plate mounting sheet member is fixed to the lower surface 10a' of the thin plate 10', so that each plate is mounted to the thin plate 10', and a hook is provided on the surface of the plate mounting sheet member on the fluid bag mounting side. On the other hand, hooks are also provided on the surfaces of the fluid bags (the left shoulder fluid bag 22', the left back fluid bag 24', the left waist fluid bag 26', the right shoulder fluid bag 42', the right back fluid bag 44', and the right waist fluid bag 46'), and the fluid bags are each mounted on the board by the hooks of these fluid bags and the hooks of the boards being fixed to each other. In addition, when the surface of each plate is covered with a plate-mounting sheet member and mounted on the thin plate 10', it can also be mounted on the upper surface side of the thin plate 10' (the opposite side of the lower surface 10a'). In this case, the hook for mounting the fluid bag is not provided on the plate-mounting sheet member covering each plate, but is provided on the surface of the side of the thin plate 10' where each plate is not mounted (lower surface 10a'). From the viewpoint of fixability with the thin plate 10', the material of the plate-mounting sheet member is preferably the same as the material of the fixed portion of the thin plate 10', but there is no particular limitation as long as it can be fixed to the thin plate 10'.

[0150] (Control device)

[0151] The configurations of the control device 6 , the hose, and the valve are the same as those of the first embodiment, and thus description thereof will be omitted.

[0152] (Posture change action)

[0153] Next, the operation of changing the body position of the care receiver 100 by the body position changing device 1' in this embodiment will be described. This operation is basically the same as that in the first embodiment. Fig. 9 The following instructions refer to the same process. Fig. 9 conduct.

[0154] When the body position changing device 1' is started, the control device 6 drives the valve and the pump to expand and contract the fluid bag, thereby automatically changing the body position of the person being cared for 100 in a supine position without the help of a caregiver or the like. The body position changing action is to drive a single shoulder fluid bag, for example, the left shoulder bag, to expand the fluid bag, and lift the left shoulder joint of the person being cared for 100 in a supine position. In this state, at least the left back fluid bag is driven to expand, and the left back is lifted. In this way, the person being cared for 100 can change his body position in a natural posture. In addition, in the present embodiment, the body position changing action is described in which the left half of the body 120 of the person being cared for 100 is lifted up for body position change, and then the right half of the body 140 is lifted up for body position change, but the order may also be reversed.

[0155] Before the control device 6 starts controlling, all valves are open and the body position changing device 1' is in a flat state. That is, the air in each fluid bag is exhausted and the person being cared for 100 is in a supine position facing upward. When the body position change starts, the control device 6 supplies air to the left shoulder fluid bag 22' to expand the left shoulder fluid bag 22' ( Fig. 9 In this state, the control device 6 turns the valve 722 ( Fig.19 ) is switched to the closed state, cutting off the air supply to the left shoulder fluid bag 22', and maintaining the expansion state of the left shoulder fluid bag 22' ( Fig. 9 Step S2) When the left shoulder fluid bag 22' is inflated, as in the first embodiment Fig.11 As shown in FIG. 1 , the shoulder joint 122 on the left side of the care receiver 100 corresponding to the left shoulder fluid bag 22′ is lifted, and the shoulder joint 122 is inclined at an angle θ1. Fig.11 As shown, from the perspective of reducing discomfort to the person being cared for 100 and performing natural turning over, the angle θ1 of the shoulder joint raised from the position S of the back in a flat state is preferably greater than 0° and less than or equal to 20°, and more preferably 1° to 6°.

[0156] Next, the control device 6 simultaneously supplies air to the left back fluid bag 24' and the left waist fluid bag 26', so that the left back fluid bag 24' and the left waist fluid bag 26' expand ( Fig. 9 In this state, the control device 6 sets valves 724 and 726 ( Fig.19 ) is switched to the closed state, cutting off the air supply to the left back fluid bag 24' and the left waist fluid bag 26', and maintaining the expansion state of these left back fluid bag 24' and the left waist fluid bag 26' ( Fig. 9 When the left back fluid bag 24' is inflated, the back 124 of the left side of the care receiver 100 corresponding to the left back fluid bag 24' is lifted. In addition, when the left waist fluid bag 2' is inflated, the waist 126 of the left side of the care receiver 100 corresponding to the left waist fluid bag 26' is lifted.

[0157] Next, the control device 6 causes the valve 724 ( Fig.19 ) is opened, and the left back fluid bag 24' is further inflated (secondary inflation) by supplying air to the left back fluid bag 24'. Fig. 9 In this state, the control device 6 turns the valve 724 ( Fig.19 ) is switched to the closed state, cutting off the air supply to the left back fluid bag 24', and maintaining the inflated state of the left back fluid bag 24' ( Fig. 9 Step S6) When the left back fluid bag 24' is inflated, as in the first embodiment Fig.12As shown, the left back 124 of the care receiver 100 corresponding to the left back fluid bag 24' is further lifted, and the back 124 is tilted at an angle θ2. In this way, the left shoulder fluid bag 22' is driven to expand the fluid bag, and the left back fluid bag 24' is driven to expand while the left shoulder joint 122 of the care receiver 100 in the supine position is lifted, so that the left back 124 can be lifted, thereby enabling the care receiver 100 to change its position in a natural posture. In addition, from the perspective of a natural turning operation, as shown in FIG. Fig.12 As shown, the angle θ2 of the back which is raised from the position S of the back in the flat state is preferably larger than the angle θ1 and less than or equal to 30°, more preferably 2° to 10°.

[0158] After the back is kept in the inclined position T for a predetermined time (e.g., 10 to 20 seconds), the control device 6 closes the valves 722, 724, and 726 ( Fig.19 ) is opened, and exhaust is discharged from all left side fluid bags (left shoulder fluid bag 22, left back fluid bag 24 and left waist fluid bag 26) ( Fig. 9 When all fluid bags are exhausted, the body position changing device 1′ returns to step S7. Fig.10 The flat state shown.

[0159] Without ending the body position change, transfer to the body position change of the right half ( Fig. 9 The position change of the right half of the body is performed in the same control as the position change of the left half of the body. That is, the control device 6 supplies air to the right shoulder fluid bag 42' to inflate the right shoulder fluid bag 42' ( Fig. 9 In this state, the control device 6 turns the valve 742 ( Fig.19 ) is switched to the closed state, cutting off the air supply to the right shoulder fluid bag 42', and maintaining the right shoulder fluid bag 42' in an expanded state ( Fig. 9 When the right shoulder fluid bag 42' is inflated, the shoulder joint part 142 on the right side of the care receiver 100 corresponding to the right shoulder fluid bag 42' is lifted and tilted.

[0160] Next, the control device 6 simultaneously supplies air to the right back fluid bag 44' and the right waist fluid bag 46', so that the right back fluid bag 44' and the right waist fluid bag 46' expand ( Fig. 9 In this state, the control device 6 sets valves 744 and 746 ( Fig.19 ) is switched to the closed state, cutting off the air supply to the right back fluid bag 44' and the right waist fluid bag 46', and maintaining the right back fluid bag 44' and the right waist fluid bag 46' in an expanded state ( Fig. 9When the right back fluid bag 44' is inflated, the back 144 of the right side of the care receiver 100 corresponding to the right back fluid bag 44' is lifted. In addition, when the right waist fluid bag 46' is inflated, the waist 146 of the right side of the care receiver 100 corresponding to the right waist fluid bag 46' is lifted.

[0161] Next, the control device 6 causes the valve 744 ( Fig.19 ) is opened, and the right back fluid bag 44' is further inflated (secondary inflation) by supplying air to the right back fluid bag 44'. Fig. 9 In this state, the control device 6 turns the valve 744 ( Fig.19 ) is switched to the closed state, cutting off the air supply to the right back fluid bag 44', and maintaining the right back fluid bag 44' in an expanded state ( Fig. 9 Step S16). When the right back fluid bag 44' is inflated, the right side of the back 144 of the care receiver 100 corresponding to the right back fluid bag 44' is further lifted and tilted. The right shoulder fluid bag 42' is driven to inflate the fluid bag, and while the right shoulder joint 142 of the care receiver 100 in the supine position is lifted, the right back fluid bag 44' is driven to inflate and lift the right side of the back 144, so that the care receiver 100 can change its position in a natural posture.

[0162] After maintaining this state for a predetermined time (e.g., 10 to 20 seconds), the control device 6 closes the valves 742, 744, and 746 ( Fig.19 ) is opened, and exhaust is discharged from all the right side fluid bags (right shoulder fluid bag 42', right back fluid bag 44' and right waist fluid bag 46') ( Fig. 9 When all fluid bags are exhausted, the body position changing device 1′ returns to step S17. Fig.10 Without ending the body position transformation, the body position transformation of the left half of the body is further returned to ( Fig. 9 In this way, by repeatedly changing the body position, it is possible to prevent the body weight from being continuously applied to the shoulders, waist, back, and other parts of the care receiver 100 that are prone to bedsores, even without the help of a caregiver or the like.

[0163] As described above, according to the present embodiment, by configuring the shoulder movable portion (shoulder fluid bag) and the back movable portion (back fluid bag) in an independent and movable manner, and by the shoulder movable portion (shoulder fluid bag) and the back movable portion (back fluid bag) operating in conjunction as described above, the shoulder blades of the person being cared for 100 can be opened, and the back can be slightly arched in the shoulder width direction (the direction in which the body position is desired to be changed), and the back can be pushed up while maintaining this state to perform the body position change. By performing the body position change in this way, a more natural body position change can be performed. Moreover, by operating the back movable portion (back fluid bag) and the waist movable portion (waist fluid bag) in conjunction as described above, by performing the body position change of the waist at the same time as the back, the lower body of the person being cared for 100 can also be tilted together, and bedsores can be prevented more effectively and aggravated. By such a body position change, a body position change based on a natural posture can be achieved, and thus the discomfort of the person being cared for 100 can be reduced. In addition, in the present embodiment, an operation of further inflating (secondary inflation) the left back fluid bag 24' is performed ( Fig. 9 Step S5) and the operation of further expanding the right back fluid bag 44' (secondary expansion) ( Fig. 9 However, it is also possible to perform a body position change action without performing these secondary expansion operations.

[0164] In addition, when the body position changing device 1' is not changing the body position, all valves are opened, and all fluid bags are flattened. Therefore, for example, even if the power supply is interrupted due to a power outage or the like so that the control device 6 does not work, the care recipient 100 will not be placed in a tilted sleeping position, thereby improving the safety of the medical or nursing site. In particular, in this embodiment, a cushion portion 80 is arranged between the body position changing device 1 and the care recipient 100. The resin foam that is particularly suitable for the cushion portion 80 can properly support the care recipient 100 due to its own cushioning properties, so even if the control device 6 does not work due to a power outage or the like, the safety is extremely high.

[0165] (Bed device)

[0166] The configuration of bed device 9 is the same as that of the first embodiment, and therefore description thereof will be omitted.

[0167] (Modification of the Fifth Embodiment)

[0168] Fig. 20 1 is a plan view showing the (A) shoulder fluid bag, (B) back fluid bag, and (C) waist fluid bag in a flat state without air supply in this embodiment, Fig.21 1 and 2 are plan views showing (A) a back fluid bag and (B) a waist fluid bag having an inflation limiting portion in a flat state to which air is not supplied in the present embodiment.

[0169] In this modification, a plurality of inflation limiting portions 24c" and 44c" are provided inside the left back fluid bags 24" and 44" respectively, connecting the upper surface and the lower surface thereof on the inner surface. The left back fluid bags 24" and 44" can limit the distance between the upper surface and the lower surface in the inflated state by the inflation limiting portions 24c" and 44c", and form substantially flat areas at the top of the upper surface side and the lower surface side in the inflated state. Therefore, the board can be stably supported, and the bottom surface of the cushion portion can be effectively pushed up, thereby implementing the body position change. In addition, by providing the inflation limiting portions 24c" and 44c", there is also an effect of improving the strength of the left back fluid bags 24" and 44" themselves. The material of the inflation limiting portions 24c" and 44c" is preferably a soft material that is flatly compressed together with the upper surface and the lower surface in the flat state, and is a material that can limit the distance between the upper surface and the lower surface in the inflated state. For example, the inflation limiting portions 24c" and 44c" may be made of the same material as the material constituting the fluid bag, or may be made of a different material. In addition, the inflation limiting portions 24c" and 44c" are preferably in the shape of a thin film so that they can be easily flattened when air is exhausted from the fluid bag. The same inflation limiting portion may be provided on the left waist fluid bag 26" and the right waist fluid bag 46".

[0170] The present invention is not limited to the above-mentioned embodiments and the configuration of the modified mode, but also includes various design modification modes. For example, in the above-mentioned embodiment, the posture changing device can also be configured to be able to correct the height of the movable part (the left movable part 2 and the right movable part 4) when the extension drive is based on the sensor 84. In addition, as the configuration of the movable part, the left movable part 2 and the right movable part 4 can also be configured differently. Moreover, the posture changing device can also be provided without a fluid bag for lifting the waist of the person being cared for. Moreover, as long as the movable part of the posture changing device can lift the various parts of the person being cared for, the plate (the left plate 3 and the right plate 5) can be arranged between the movable part and the person being cared for, and the left plate 3 and the right plate 5 can also be of different configurations. In addition, the pad 80 can also be set as a single layer or other multi-layer structure. Moreover, the control device 6 can also be a structure that is not built into the pad 80, but is arranged outside the pad 80.

[0171] In the body position changing method of the above embodiment, the back fluid bag and the waist fluid bag on the left (or right) side are inflated simultaneously, but they may be inflated separately. In addition, the time for maintaining the inflation of the fluid bag may be changed appropriately.

[0172] Furthermore, as long as each movable part has the function of extending and driving in the Z-axis direction to push up the cushion part 80, a mechanism other than a fluid bag can be used, for example, a thin actuator of a multi-stage telescopic type can be cited. In addition, in the case of a bed device mounted or assembled on the bottom plate part (the part where the mattress is mounted) of the bed structure 91, the thickness of each movable part in the initial state (when contracted) is less restricted than that of each movable part when the body position changing device is assembled to the mattress device, so a wider range of known lifting and lowering components can be applied. In addition, the preferred embodiment in which the shoulder movable part is arranged at a position corresponding to the shoulder joint part in this case is the same as the description of the preferred embodiment in which the shoulder fluid bag of the first embodiment is arranged at a position corresponding to the shoulder joint part, and the shoulder fluid bag is interpreted as the shoulder movable part, and the highest expansion part is interpreted as the highest push-up part. In addition, the preferred embodiment in which the back movable part is arranged at a position corresponding to the back is the same as the description of the preferred embodiment in which the waist movable part is arranged at a position corresponding to the waist, and the back fluid bag is interpreted as the back movable part, and the waist fluid bag is interpreted as the waist movable part.

[0173] Furthermore, the plate in the first to fifth embodiments may not be provided. That is, by increasing the rigidity of the sheet-shaped fixing member and the rigidity of the mattress foam, the body position changing device may be configured without providing a plate disposed above the fluid bag.

[0174] In addition, in the first to fifth embodiments described above, the position of the supply port for fluid inflow and outflow provided in the fluid bag is not particularly limited as long as it does not hinder the expansion and contraction of the fluid bag. In addition, a plurality of supply ports may be provided in the fluid bag for control, and an exhaust port for exhausting air may be provided separately in addition to the supply port, so that the expansion / contraction of the fluid bag is controlled while adjusting the intake and exhaust.

[0175] In addition, in the first to fifth embodiments described above, a position adjustment mechanism capable of adjusting the position of the left shoulder movable part (left shoulder fluid bag), the left back movable part (left back fluid bag), the right shoulder movable part (right shoulder fluid bag), and the right back movable part (right back fluid bag) may also be provided. By providing such a position adjustment mechanism, the preferred positions of the left shoulder movable part (left shoulder fluid bag), the left back movable part (left back fluid bag), the right shoulder movable part (right shoulder fluid bag), and the right back movable part (right back fluid bag) can be adjusted, so that the best body position change corresponding to the physique (skeleton) of the person being cared for can be implemented. In addition, the same position adjustment mechanism may be provided on the left waist movable part (left waist fluid bag) and the right waist movable part (right waist fluid bag), so that a more appropriate body position change corresponding to the physique (skeleton) of the person being cared for can be implemented.

[0176] The position adjustment mechanism is not particularly limited as long as it can adjust the position of each movable part (fluid bag), but a sliding mechanism that can adjust the position continuously or a mechanism that can adjust the position intermittently at intervals can be applied. As an example of a sliding mechanism, a mechanism can be cited in which a slide rail component is arranged on the surface of the fixed sheet 10 (10'), a sliding component that can be slidably engaged in the slide rail is arranged on each movable part (fluid bag), and a stopper is provided to fix the sliding component at an arbitrary position. In addition, as a mechanism that can adjust the position intermittently at intervals, for example, a mechanism can be cited in which hooks or surface fasteners are arranged at desired intervals on the surface of the fixed sheet 10 (10'), hooks or surface fasteners are pre-arranged on the side of each movable part (fluid bag), and the hooks or surface fasteners are assembled at each desired position of the fixed sheet 10 (10') to fix each movable part (fluid bag). In addition, a surface fastener may be arranged in each area or the entire area where each movable part (fluid bag) moves on the fixed sheet 10 (10'), and a surface fastener corresponding to the surface fastener may be arranged on the side of each movable part (fluid bag). Thus, the degree of freedom of arranging and fixing each movable part (fluid bag) at each desired position of the fixed sheet 10 (10') is increased.

[0177] The position adjustment of each movable part (fluid bag) by the position adjustment mechanism can be performed by adjusting each movable part (fluid bag) one by one, or by moving the whole as a whole while keeping each movable part (fluid bag) in the configuration position. In addition, the left movable part group of the left shoulder movable part (left shoulder fluid bag) and the left back movable part (left back fluid bag) or the left waist movable part (left waist fluid bag) added thereto, and the right movable part group of the right shoulder movable part (right shoulder fluid bag) and the right back movable part (right back fluid bag) or the right waist movable part (right waist fluid bag) added thereto can be adjusted one by one while keeping each movable part (fluid bag) in the configuration position.

[0178] As another embodiment of moving the entire device as a whole while keeping each movable part (fluid bag) in the configuration position, the fixing sheet 10 (10') can be installed on the cushion or cover via the above-mentioned position adjustment mechanism, thereby being able to adjust the position of the body position changing device relative to the cushion.

[0179] In the first to fifth embodiments described above, a mattress device having a body position changing device and a cushion portion is described. However, the body position changing device of each embodiment may be directly disposed on the back of a care receiver in a supine position to change the body position of the care receiver.

[0180] The above embodiments are all exemplary descriptions of the present invention, not limitations of the present invention, and the present invention can be implemented in various other modified forms and altered forms. Therefore, the scope of the present invention is limited only by the claims and their equivalents.

[0181] Industrial availability

[0182] The invention provides a device for automatically changing the body position of a person being cared for, which plays a wide role in the nursing and other industrial fields.

[0183] Reference numerals

[0184] 1, 1a, 1b, 1c, 1′ Body position changing device

[0185] 10, 10′ thin plate

[0186] 10a, 10a′, 24b lower surface

[0187] 11, 11'Fixed parts

[0188] 12Hose cutout

[0189] 2, 2′ Left movable part

[0190] 22, 22′ Left shoulder fluid bag (left shoulder movable part)

[0191] Supply ports 23, 25, 27, 43, 45, 47

[0192] 24, 24', 24" left back fluid bag (left back movable part)

[0193] 24a Upper surface

[0194] 24c, 24c", 26c", 44c", 46c" expansion limiting portion

[0195] 24d Interior

[0196] 241, 261, 441, 461 First Bag

[0197] 241, 262, 442, 462 second bag

[0198] 26, 26′, 26″ left waist fluid pocket

[0199] 3 Left side panel

[0200] 32 Left shoulder plate

[0201] 34 Left back panel

[0202] 36 Left waist panel

[0203] 361,561 First Plate

[0204] 362,562 second plate

[0205] 37, 57 facing surfaces

[0206] 38, 58, 8b bottom

[0207] 4, 4′ Right side movable part

[0208] 42, 42' right shoulder fluid bag (right shoulder movable part)

[0209] 44, 44', 44" right back fluid bag (right back movable part)

[0210] 46, 46′, 46″ right waist fluid bag

[0211] 5Right side panel

[0212] 52 right shoulder plate

[0213] 54 right back panel

[0214] 56 right waist

[0215] 6. Control Device

[0216] 622, 624, 626, 642, 644, 646 hoses (fluid flow path)

[0217] 722, 724, 726, 742, 744, 746 valves

[0218] 8 Mattress Installation

[0219] 8a Support surface

[0220] 80 pad

[0221] 81 First Pad

[0222] 82 Second Mat

[0223] 83 Third pad

[0224] 84 sensors

[0225] 85 control device configuration hole

[0226] 86 hood

[0227] 87 hose cutout

[0228] 9-Bed Unit

[0229] 91 bed structure

[0230] 100 people being cared for

[0231] 110 Head

[0232] 120 Left half

[0233] 140 right half

[0234] 122, 142 shoulder joint

[0235] 124, 144 Back

[0236] 126, 146 Waist

Claims

1. A body position changing device, characterized in that: The body position changing device comprises: a left shoulder fluid bag, which is arranged at a position corresponding to the left shoulder joint of the person being cared for in a supine position; a left back fluid bag, which is arranged at a position corresponding to the left back of the person being cared for in a supine position and is driven independently of the left shoulder fluid bag; and a right shoulder fluid bag, which is arranged at a position corresponding to the right shoulder joint of the person being cared for in a supine position. and a right back fluid bag, which is arranged at a position corresponding to the right side of the back of the care receiver in the supine position and is driven independently of the right shoulder fluid bag.

2. The body position changing device according to claim 1, characterized in that: The left back fluid bag and the right back fluid bag each have a concave cutout portion into which the left shoulder fluid bag and the right shoulder fluid bag fit.

3. The body position changing device according to claim 2, characterized in that: The left shoulder fluid bag and the right shoulder fluid bag are circular fluid bags in a flat state without fluid supply, and the left back fluid bag and the right back fluid bag each have a concave cutout for the left shoulder fluid bag and the right shoulder fluid bag to fit together, and each is a single rectangular fluid bag in a flat state without fluid supply.

4. The body position changing device according to claim 1, characterized in that: The body position changing device further comprises: a left waist fluid bag, which is arranged at a position corresponding to the left side of the waist of the person being cared for in the supine position; and a right waist fluid bag, which is arranged at a position corresponding to the right side of the waist of the person being cared for in the supine position.

5. The body position changing device according to claim 4, characterized in that: Each of the left waist fluid bag and the right waist fluid bag is a single rectangular fluid bag in a flat state without fluid supply.

6. The body position changing device according to claim 1, characterized in that: A left back plate having a flat surface facing the left back of the care receiver is arranged above the left back fluid bag, and a right back plate having a flat surface facing the right back of the care receiver is arranged above the right back fluid bag.

7. The body position changing device according to claim 1, characterized in that: A left shoulder plate having a plane facing the left shoulder joint of the care receiver is arranged above the left shoulder fluid bag, and a right shoulder plate having a plane facing the right shoulder joint of the care receiver is arranged above the right shoulder fluid bag.

8. The body position changing device according to claim 1, characterized in that: The body position changing device has control devices that drive the left shoulder fluid bag, the left back fluid bag, the right shoulder fluid bag, and the right back fluid bag, respectively.

9. The body position changing device according to claim 8, characterized in that: The control device has a fluid flow path and a valve, the fluid flow path is connected to at least one of the left shoulder fluid bag, the left back fluid bag, the right shoulder fluid bag and the right back fluid bag, the valve is arranged in the fluid flow path, and the valve is configured to switch between an open state for allowing fluid to flow through the fluid flow path and a closed state for cutting off fluid flow, and the control device is configured to place the valve in an open state when power is interrupted.

10. The body position changing device according to claim 1, characterized in that: The left back fluid bag and the right back fluid bag have an inflation limiting portion that limits an inflation state.

11. The body position changing device according to claim 4, characterized in that: The left waist fluid bag and the right waist fluid bag have an inflation limiting portion for limiting an inflation state.

12. The body position changing device according to claim 1, characterized in that: The body position changing device has a position adjustment mechanism, and the position adjustment mechanism adjusts the positions of the left shoulder fluid bag, the left back fluid bag, the right shoulder fluid bag, and the right back fluid bag individually or integrally.

13. A body position changing device, characterized in that: The body position changing device is a body position changing device for changing the body position of a person being cared for in a supine position, and the body position changing device comprises: a left shoulder movable part, the left shoulder movable part lifting the left shoulder joint of the person being cared for; a left back movable part, the left back movable part lifting the left back of the person being cared for; a right shoulder movable part, the right shoulder movable part lifting the right shoulder joint of the person being cared for; and a right back movable part, the right back movable part lifting the right back of the person being cared for; The body position changing device is configured such that the left shoulder movable portion is driven independently of the left back movable portion, and the right shoulder movable portion is driven independently of the right back movable portion.

14. The body position changing device according to claim 13, characterized in that: The body position changing device has a position adjustment mechanism, and the position adjustment mechanism adjusts the positions of the left shoulder movable part, the left back movable part, the right shoulder movable part, and the right back movable part separately or integrally.

15. A mattress device, characterized in that: The mattress device is a mattress device including the body position changing device according to any one of claims 1 to 14 and a cushion portion for supporting the care recipient, and the body position changing device is fixed to the bottom surface of the cushion portion.

16. A bed device, characterized in that: The bed device includes the mattress device according to claim 15 and a bed structure to which the mattress device is fixed.

17. A bed device, characterized in that ， The body position changing device according to any one of claims 1 to 14 is arranged on the bed board surface of the bed structure.

18. A method for changing body position, characterized in that: The body position changing method is a method for changing the body position of a person being cared for in a supine position using a body position changing device according to any one of claims 1 to 12, By driving the left shoulder fluid bag or the right shoulder fluid bag to expand the left shoulder fluid bag or the right shoulder fluid bag, the left shoulder joint or the right shoulder joint of the person being cared for in the supine position is lifted. When the left shoulder fluid bag or the right shoulder fluid bag is inflated, the back fluid bag corresponding to the side of the back where the shoulder joint is lifted is driven to inflate the left back fluid bag or the right back fluid bag, thereby lifting the side of the back where the shoulder joint is lifted.

19. A method for changing body position, characterized in that: The body position changing method is a method for changing the body position of a person being cared for in a supine sleeping position using the body position changing device according to claim 13, The left shoulder movable part or the right shoulder movable part is extended and driven to lift the left or right shoulder joint of the person being cared for in a supine sleeping position. While the left shoulder movable part or the right shoulder movable part is driven, the back fluid bag corresponding to the back on the side where the shoulder joint part is lifted in the left back movable part and the right back movable part is driven, thereby lifting the back on the side where the shoulder joint part is lifted.

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