JPH06154271A - Bed apparatus for medical care - Google Patents

Abstract

PURPOSE:To attempt to simplify the constitution of a bed apparatus moving a patient on a matress and to miniaturize it by making the first and the second matress parts in a peristalic motion in the specified direction while the first and the second matress parts are relatively moved up and down in accordance with the rotational movement of a rotating body and to move the patient in the peristalic direction of the matress parts. CONSTITUTION:One end of a connecting member 14 is connected with disc-shaped rotating bodies 10a and 10b provided on a bed frame and rotatably driven on the peripheral direction and the first matress part 21 is fixed on another end of the connecting member 14. In addition, the second connecting member 16 one end of which is connected with the rotating body 10 being separated at a specified angle from the connecting member 14 in the peripheral direction, is provided and the second matress part 22 is fixed on another end of the connecting member 16 which makes in a peristlic motion while it moves relatively up and down to the first matress part 21 by rotating the rotating body 10. The first matress part 21 and the second matress part 22 make in a peristalic motion while they are moved relatively up and down in accordance of the radius of the rotating body 10 by rotating the rotating body 10 to move a user in the specified direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical bed apparatus capable of automatically moving a patient lying on a mattress in the width direction and the longitudinal direction of the mattress.

[0002]

2. Description of the Related Art A caregiver uses a patient who is lying on a mattress and is unable to move his / her body by himself, when changing clothes, or when changing bed sheets. It is necessary to pull it once in the width direction. Moreover, in order to prevent a pressure sore of a patient, a caregiver needs to move the patient and change the direction at regular intervals.

However, it is not easy to move a patient who cannot move by himself / herself on the mattress, which imposes a heavy burden on the caregiver and may cause a backache.

Therefore, various medical bed apparatuses capable of automatically moving a supine patient on a mattress have been developed. For example, the medical bed apparatus disclosed in Japanese Patent Laid-Open No. 3-92158 is known. In the bed apparatus shown in this publication, a pair of human body supporting members are provided inside a mattress with a space therebetween, and the pair of human body supporting members are alternately coupled by separate connecting members. Elevating means and horizontal moving means are provided in each connecting member, and each human body supporting member can be alternately peristaltic in any direction.

By the way, the prior art disclosed in this publication has a structure in which the respective human body supporting members are driven in the vertical direction and the horizontal direction by the elevating means and the horizontal moving means. The horizontal moving means requires a cylinder for driving each connecting member in the vertical direction (front-back direction) and the horizontal direction (width direction). Therefore, since a large number of cylinders are required to alternately drive the pair of human body supporting members in arbitrary directions in a peristaltic manner, that is, in the vertical and horizontal directions, the number of parts and the size of the apparatus increase. was there.

Further, when moving a patient, it may be required to perform a peristaltic movement without moving vertically depending on the condition of the patient. However, in the conventional structure, the pair of human body supporting portions are alternately moved up and down and moved back and forth to perform the peristaltic movement of the patient.

Therefore, when a patient is supported by a pair of human body support members and is supported by one human body support member, the load received by the one human body support member is doubled, and the amount of elastically compressive deformation is almost the same. Since it doubles, the patient moves downward accordingly.

Further, when the patient is supported by one support member and supported by two support members, the support member which has been elastically deformed by the amount of twice the compressive deformation until then is restored. , The patient will move upwards. That is, according to the structure in which the pair of human body supporting members are simply moved up and down to move the patient, there is a case where the patient cannot be moved without moving up and down.

[0009]

As described above, in the conventional medical bed apparatus, many cylinders must be used to alternately drive the pair of human body supporting members in the vertical direction and the horizontal direction. This may lead to an increase in the number of points and an increase in the size of the device, and it may also be impossible to move the patient without moving it up and down. A first object of the present invention is to provide a medical bed apparatus having a simple structure and capable of performing a peristaltic movement of a patient with a small number of parts. A second object of the present invention is to provide a medical bed apparatus capable of moving a patient horizontally without vertically moving.

[0010]

A first aspect of the present invention is a bed frame, a disk-shaped rotating body provided on the bed frame and driven to rotate in the circumferential direction, and one end of which is connected to the rotating body. No. 1 connecting member, a first mattress portion attached to the other end of the first connecting member, and one end connected to the rotating body at a predetermined angle in the circumferential direction from the first connecting member. The second connecting member and the second connecting member, which is attached to the other end of the second connecting member, performs a peristaltic movement in a predetermined direction while vertically moving relative to the first mattress portion by rotating the rotating body. And a mattress part.

A second invention is the first connecting member and the second connecting member.
Of the first mattress portion and the second mattress portion are substantially the same in the amount of compressive deformation with respect to the load and the area receiving the load. It is characterized by being set.

[0012]

According to the first aspect of the present invention, by rotating the rotating body, the first mattress portion and the second mattress portion make a peristaltic movement while moving up and down relatively in accordance with the radius of the rotating body. , The user can be moved in a predetermined direction.

According to the second aspect of the invention, the elastic deformation amount of these mattress portions also changes in accordance with the change in the supporting state of the user by the pair of vertically moving mattress portions, so that the user can move without moving up and down. Can be made.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The medical bed apparatus shown in FIG. 1 is a bed frame.
Equipped with Mu 1. The bed frame 1 is provided with casters 2 having stoppers at the four corners of the lower surface, a headboard 3a is provided at one end in the longitudinal direction, and a footboard 3b shown in FIG. 2 is provided upright at the other end. .

As shown in FIGS. 2 and 4A, a pair of U-shaped brackets 4 are erected at both ends in the longitudinal direction of the bed frame 1 so as to be spaced apart in the width direction. There is. The axis of each bracket 4 is a bed frame.
A mounting shaft 5 along the longitudinal direction of the frame 1 is rotatably supported by a bearing 5a. A driven pulley 6 is fitted to the central portion of the mounting shaft 5 in the axial direction. As shown in FIG. 1, an endless timing belt 7 is stretched on a pair of driven pulleys 6 which are provided apart from each other in the width direction of the bed frame 1.

A drive motor 8 is disposed in the widthwise central portion of both end portions of the bed frame 1 in the longitudinal direction. The rotary shaft 9 of the drive motor 8 has a drive pulley 1 including a sprocket, a pulley, and the like, like the rotary body 6.
1 is fitted. The drive pulley 11 is engaged with the timing belt 7. Therefore, when the drive pulley 11 is rotationally driven by the drive motor 8, the timing belt 7 is run endlessly, and thereby the pair of driven pulleys 6 are rotationally driven.

A pair of drive motors 8 at both ends of the bed frame 1 in the longitudinal direction operate in synchronization. Therefore, the pair of driven pulleys 6 at both ends in the longitudinal direction have the same rotation direction and rotation speed.

As shown in FIG. 4, a disk-shaped first rotating body 10a and a disk-shaped second rotating body 10b are fitted to both ends of the mounting shaft 5 projecting from both sides of the bracket 4, respectively. . The first rotary body 10a has a first support shaft 12 projecting therefrom, and the second rotary body 10b has a second support shaft 13 projecting therefrom. The first support shaft 12 and the second support shaft 13 are shown in FIG.
As shown in (b), they are provided at positions of radius R from the center of rotation of the rotating bodies 10a and 10b, respectively, and further, the first support shaft 12 and the second support shaft 13 are provided 180 degrees apart in the circumferential direction. ing.

A first connecting member 1 is attached to the first support shaft 12.
One end of 4 is rotatably supported via a bearing portion 15, and one end of a second connecting member 16 is rotatably supported on the second support shaft 13 via a bearing portion (not shown). First above
The first attachment portion 18 is provided at the other end of the connecting member 14 of the second attachment member 1 and the second attachment portion 1 is provided at the other end of the second connecting member 16.
9 is provided. The first attachment portions 18 are attached to the lower four corners of the first mattress portion 21 shown in FIGS. 1 and 3, and the second attachment portions 19 are attached to the lower four corner portions of the second mattress portion 22. .

The first mattress portion 21 has a rectangular shape, a first frame 24 having openings 23 along the width direction formed at predetermined intervals in the longitudinal direction, and an upper surface of the frame 24. It is composed of a first cushion body 25 provided.

The second mattress portion 22 has a prismatic shape smaller than the opening 23, and has a second cushion body 26 inserted into each opening 23 and each second cushion body 2.
6 is attached to the second frame 27. The second frame 27 is composed of a frame portion 27a and support legs 27b provided on both upper surfaces of the frame portion 27a at predetermined intervals in the longitudinal direction, and a pair of support legs 27b corresponding to each other in the width direction. The second cushion body 2 between the upper ends of the
6 is installed.

The first cushion body 25 and the second cushion body 26 are set so that the softness thereof, that is, the amount of compressive deformation with respect to the load, is set to be substantially equal, and further, a plurality of portions along the width direction of the first cushion body 25. The area of 25a and the areas 26a of the upper surfaces of the plurality of second cushion bodies 26 are set to be substantially equal.

As a result, when the upper surfaces of the first and second mattress portions 21 and 22 are at the same height, when the patient K lays on the bed surface formed by these mattress portions, the mattress portions 21 and 22 are substantially separated. Patient K is compressed and deformed by the same amount
Will support the load almost evenly.

The first support shaft 12 and the second support shaft 1 are
If 3 and 3 are at the same height in the horizontal direction, the first
So that the upper surfaces of the mattress portion 21 and the second mattress portion 22 have the same height.
A first connecting member 14 and a second connecting member 16 that connect the two.
And the length of are set. Therefore, from that state, the rotating body 6 moves in a predetermined direction, for example, the first mattress portion 21.
If it is driven to rotate clockwise by 90 degrees, the first
The mattress portion 21 is moved up by the dimension R and moved to the one end side in the width direction by the same dimension R, and the second mattress portion 22 is moved down by the dimension R and moved by the same dimension R to the other end side in the width direction. Become.

The upper surfaces of the first mattress portion 21 and the second mattress portion 22 are covered with the exterior material 30 shown in FIG. The exterior material 30 is made of a stretchable cloth and is adhered and fixed to the upper surfaces of the mattress portions 21 and 22. Therefore, each of the above mattress parts 2
The mattress portions 21 and 2 of the mattresses 1 and 22 move up and down and the peristaltic movement integrally while expanding and contracting the exterior material 30.
The patient K lying on the mattress portions 21 and 22 can be interlocked with the movement of 2.

Next, the operation of the medical bed apparatus having the above structure will be described with reference to FIGS. 5 (a) to 5 (e). Figure 5
(A) shows a state in which the first support shaft 12 and the second support shaft 13 are at the same height, and the first and second rotating bodies 10 at this time are shown.
The rotation angles of a and 10b are 0 degrees. When the rotation angle of the first and second rotating bodies 10a and 10b is 0 degree, the first mattress portion 21 and the second mattress portion 22 are at the same height. Therefore, the first mattress portion 21 and the second mattress portion 21
6A, the load P of the patient K is received by 1 / 2P (half), and the mattress 22 is compressed and deformed by the same amount. The amount of compressive deformation at this time is X, as shown in FIG. 6A, and the support height of the patient K is H. When the radius of gyration of the first and second support shafts 12, 13 is R, the amount of compressive deformation X and the radius of gyration R are substantially equal.

As shown in FIG. 5B, the first and second rotating bodies 10a and 10b are rotated 90 degrees clockwise from the state of 0 degrees.
When rotated once, the first mattress portion 21 will be
According to the radius of rotation of the first support shaft 12 mounted at a distance of radius R from the center of rotation of 0a, 10b, the first spindle 12 moves upward by dimension R and moves to the one end side in the width direction indicated by arrow A by dimension R.
In addition, the second mattress portion 22 includes the rotating bodies 10a, 10
According to the radius of rotation of the second support shaft 13 mounted at a radius R from the center of rotation of b, it moves by the size R while descending by the size R to the other end side in the width direction indicated by the arrow B. As a result, the patient K moves by the dimension R in the arrow A direction while being supported only by the rising first mattress portion 21.

As described above, when the patient K is supported only by the first mattress portion 21, the amount of deformation of the first mattress portion 21 increases correspondingly. In other words, since the load P of the patient K is supported only by the first mattress portion 21, the amount of compressive deformation of the first mattress portion 21 is approximately doubled to 2X. As a result, as shown in FIG.
Since the first mattress portion 21 is further compressed and deformed to support the patient K by a dimension X substantially equal to the raised dimension R of the mattress portion 21, the supporting height H of the patient K does not change.

The rotating bodies 10a and 10b are rotated by 90 degrees from the state shown in FIG.
At 180 degrees as shown in (c), the first mattress portion 21 further moves in the direction of arrow A while descending by the dimension R. At the same time, the second mattress portion 22 moves further in the direction of arrow B while rising by the dimension R. As a result, the amount of movement of the patient K in the direction of arrow A is 2R.

Further, since the first mattress portion 21 and the second mattress portion 22 are at the same height and both support the patient K, the compression deformation amount of the first mattress portion 21 changes from 2X to X. And the second mattress portion 22 becomes X.
It is compressed and deformed by the size of. As a result, the supporting height of the patient K becomes the state shown in FIG. 6A, and the supporting height H does not change.

When the rotating bodies 10a, 10b are further rotated and the rotation angle becomes 270 degrees as shown in FIG. 5D, the first mattress portion 21 descends by the dimension R and the same dimension R only. Return in the direction of arrow B. Further, the second mattress portion 22 moves up by the dimension R and returns by the dimension R in the arrow A direction.

As a result, the patient K is supported only by the second mattress portion 22 that moves up and moves in the direction of arrow A, and the moving amount becomes 3R. In addition, since the deformation amount of the second mattress portion 22 is 2X, the support height H of the patient K does not change in this case as well.

From the state of FIG. 5 (d), the rotor 10a,
10b is further rotated 90 degrees and the rotation angle is 360.
Degree, that is, the state shown in FIG. 5 (e), the amount of movement of the patient K in the direction of arrow A is 4R, and both the patient K has the compression deformation amount X of the first mattress portion 21 and the second mattress portion 21. 22 and 22 are supported at a height H.

That is, according to the above configuration, the rotating body 10
By rotating a and 10b by 360 degrees, the patient K is
With the second mattress portions 21 and 22, a peristaltic movement to one end side in the width direction with a dimension 4R which is four times as large as the rotation radius R of these, that is, four times as large as the rotation radius R of the first spindle 12 and the second spindle 13. And the first and second mattress parts 2
Since 1 and 22 are set so that the amount of compressive deformation with respect to the load and the area receiving the load are substantially the same, they can be moved without changing the support height H of the patient K.

In the above embodiment, the case where the patient is moved in the width direction of the bed frame has been described. However, a pair of rotating bodies are provided along the width direction of the bed frame, and the first and second mattresses are provided. Peristaltic movement of the section along the longitudinal direction of the bed frame allows the patient to move along the longitudinal direction of the bed frame.

Further, the rotating body is divided into the first rotating body and the second rotating body, and the first connecting member and the second connecting member are connected to each rotating body. The two connecting members may be connected to each other, as long as the first and second connecting members can be relatively moved up and down and peristaltic.

[0037]

As described above, according to the first aspect of the present invention, the first mattress portion and the second mattress portion are vertically moved relative to each other in accordance with the rotational movement of the rotating body, and the peristaltic movement is performed in the predetermined direction. I was allowed to.

Therefore, the patient is moved in the direction of the peristaltic movement of these mattress portions while having a simple construction in which the first mattress portion and the second mattress portion are simply connected to the rotationally driven rotating body. be able to.

Further, according to the second aspect of the invention, the first connecting member and the second connecting member are 180 degrees in the circumferential direction of the rotating body.
The first mattress portion and the second mattress portion were set so as to be displaced from each other so that the amount of compressive deformation with respect to the load and the area receiving the load are substantially the same.

Therefore, the patient is supported by one of the mattress portions or both mattress portions by the first mattress portion and the second mattress portion that move up and down relatively. Changes,
The patient can be moved without changing the support height.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a plan view of the bed frame.

FIG. 3 is a vertical sectional view of first and second mattress portions.

FIG. 4A is a sectional view showing a mounting structure of a rotating body, and FIG. 4B is a front view.

5 (a) to 5 (e) are explanatory views sequentially showing a state in which a patient is moved.

6 (a) and 6 (b) are explanatory views showing a state in which the first and second mattress portions receive a load and the amount of compressive deformation at that time.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bed frame, 10a ... 1st rotary body, 10 ... 2nd rotary body, 14 ... 1st connection member, 16 ... 2nd connection member, 21 ... 1st mattress part, 22 ... 2 mattress section.

Claims (2)

[Claims] 1. A bed frame, and a disk-shaped rotating body which is provided on the bed frame and is rotationally driven in the circumferential direction,
A first connecting member having one end connected to the rotating body, a first mattress portion attached to the other end of the first connecting member, and the rotating body having a predetermined circumferential direction with the first connecting member. A second connecting member whose one end is connected at an angle to each other;
And a second mattress portion attached to the other end of the connecting member for performing a peristaltic movement in a predetermined direction while moving up and down relative to the first mattress portion when the rotating body rotates. Characteristic medical bed equipment. 2. The first connecting member and the second connecting member are attached to the rotating body while being displaced by 180 degrees in the circumferential direction,
The medical bed apparatus according to claim 1, wherein the first mattress portion and the second mattress portion are set such that the amount of compressive deformation with respect to a load and the area receiving the load are substantially the same.