JP2009268789A - Chair bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a practical chair bed for medical application or for nursing care. <P>SOLUTION: This chair bed includes a seat part 13, a backrest 15, a thigh receiving part 17 and a lower thigh receiving part 19. The backrest 15 is fixed at a chair state, a bed state and a shock posture state and is swingable among them. When the backrest 15 is in the bed state, the thigh receiving part 17 and the lower thigh receiving part 19 are substantially horizontal, however, when the backrest 15 is in the shock posture state, the lower thigh part 19 is configured to become a downward slope where the feet P6 of a person are located at the lower end. Alternatively, when the backrest 15 is the bed state, the thigh receiving part 17 is substantially horizontal and the lower thigh receiving part 19 is configured to locate the thighs P3 of the person in the upper part of the thigh receiving part 17, so as to be substantially horizontal and lift upward than the thigh receiving part 17. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a chair bed that can serve as both a chair and a bed.

  Conventionally, a chair bed disclosed in Patent Document 1 is known. The chair bed includes a seat that comes into contact with a person's buttocks and thighs, a backrest that comes into contact with the back of the person, and a lower leg support that comes into contact with the lower leg of the person.

  The backrest can be fixed in a chair state that is substantially vertical upward with respect to the seat portion and a bed state that is substantially horizontal with the seat portion, and is configured to be swingable between them. A headrest is fixed to the upper end side of the backrest, and a footrest is provided on the lower end side of the lower leg receiving part so as to be swingable with respect to the lower leg receiving part. When the backrest is in a bed state, the lower leg support portion and the footrest are also configured to be substantially horizontal.

  This chair bed is suitable for medical use such as dialysis treatment. For example, when a patient uses this chair bed to receive dialysis treatment, the patient can sit on the chair in the chair state or lie on his back on the chair bed in the bed state. In a patient sitting on a chair bed in a chair state, the buttocks and thighs touch the seat, the back touches the back, the head touches the headrest, the lower leg calf touches the lower leg support, and the sole Can contact the footrest. Further, in a patient who lies down on a chair bed in a bed state, the buttocks and thighs are in contact with the seat, the back is in contact with the back, the head is in contact with the headrest, and the calf is in contact with the lower leg support. This allows the patient to spend a relatively comfortable period of time during dialysis treatment.

JP 2004-290239 A

  However, in the above-described conventional chair bed, the backrest is not swung and cannot be fixed until the shock posture is in a downward inclination with the human head at the lower end. For example, a patient undergoing dialysis treatment removes blood from the body once out of the body, so that blood pressure decreases, blood flow of organs and tissues throughout the body decreases, and supply of oxygen and the like becomes insufficient (peripheral) Circulatory failure). In such a case, it is necessary to place the patient in a shock position so that the head is lowered so as to assist the return of venous blood to the heart and increase the cardiac output. In the conventional chair bed, the backrest cannot be in such a shock position, and improvement for medical use is desired.

  In this regard, for example, Japanese Patent Application Laid-Open No. 2007-202862 discloses a chair that can swing the backrest to the bed state and swing to the shock body state. For this reason, it is conceivable that the backrest of the chair bed can be simply swung to the shock position. However, those who are in a shock position are almost unwilling patients, and there is a concern that the patient may fall from the head in a chair bed in which the backrest is simply swingable to the shock position. If it tries to avoid it, the inclination angle of the backrest is limited, and peripheral circulatory failure tends to be insufficiently solved.

  Moreover, when this chair bed is used for the care of a cared person such as an elderly person, it is difficult to take care of the cared person. In other words, this chair bed has the buttocks, thighs, and calves remaining almost horizontal even if the backrest is in bed, so that the caregiver can take care of the cared person. The caregiver must lift the lower leg of the cared person by hand. For this reason, the conventional chair bed is desired to be improved for nursing care.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide a more practical chair bed for medical use or for nursing care.

A chair bed according to a first aspect of the present invention includes a seat that comes into contact with a person's buttocks, a backrest that comes into contact with the back of the person, a thigh receiving part that comes into contact with the thigh of the person, and a lower leg support that comes into contact with the lower leg of the person With
The backrest is in a chair state that is substantially vertical upward with respect to the seat portion, a bed state that is substantially horizontal with the seat portion, and a shock posture state in which the person's head is in a downward slope with the lower end of the head. And can swing between them,
If the backrest is in the bed state, the thigh receiving part and the lower leg receiving part are substantially horizontal,
When the backrest is in the shock position, the lower leg receiving portion is configured to have a downward slope with the person's foot at the lower end.

  In the chair bed of the first invention, the backrest can be fixed in the chair state, the bed state, and the shock posture state, and can swing between them. The chair state is a state in which the backrest is substantially vertical with respect to the seat portion. The bed state is a state in which the backrest is substantially horizontal with the seat portion. The shock posture state is a state in which the back is tilted downward with the human head at the lower end. The chair state can be a standing state in which the backrest is nearly vertical, and a reclining state in which the backrest is not inclined to the bed state but the backrest is inclined from the vertical. For this reason, when a patient receives dialysis treatment using this chair bed, for example, the patient can sit on the chair bed in the chair state or lie down on the chair bed in the bed state. Since the backrest is swung to the shock position and can be fixed, the patient can be placed in the shock position even if the patient has peripheral circulatory failure on the chair bed.

  In this chair bed, when the backrest is in the shock position, the lower leg receiving portion is inclined downward with the human foot at the lower end. Tilt is an expression relative to the horizontal. For this reason, the patient is in a state where the upper body has a downward slope with the head at the lower end, but the lower leg is bent from the thigh by its own weight. For this reason, even if the patient is an unwilling person, the patient's lower leg is prevented from falling from the head. For this reason, the inclination angle of the backrest can be increased, and peripheral circulatory insufficiency can be eliminated more effectively.

  Therefore, the chair bed of the first invention is more practical for medical use.

  In the chair bed of the first invention, it is preferable that the thigh receiving portion is configured such that the human thigh bends from the waist when the backrest is in the shock position. In this case, the patient in the shock position is in a state where the thigh and the lower leg are bent at a right angle and the knee is raised, and it is more difficult to fall from the head, so peripheral circulatory insufficiency can be more effectively resolved.

  Various means can be adopted as a specific structure configured as described above. For example, a backrest swinging mechanism that swings the backrest relative to the seat from substantially vertical to substantially horizontal, and a first crus swinging mechanism that swings the lower leg support relative to the seat from approximately vertical to approximately horizontal. A second crus receiving part oscillating mechanism that oscillates the crus receiving part with respect to the seat until a downward inclination with the human foot at the lower end, a back swaying oscillating mechanism, and a second crus receiving part oscillating mechanism; If the backrest is substantially horizontal, it is possible to employ an interlocking mechanism that operates the second crus receiving part swinging mechanism. In this case, since the second crus receiving part swinging mechanism can be operated by the motor that operates the backrest swinging mechanism, the manufacturing cost can be reduced. It is also possible to configure the thigh receiving part so that the human thigh is bent from the waist by the second lower thigh receiving part swinging mechanism.

  It is also possible to operate the backrest swing mechanism by the first motor, operate the first lower leg receiving section swing mechanism by the second motor, and move the seat portion up and down by the third motor. Of these motors, the first motor that puts the backrest in the shock position is preferably one that can release the resistance of the motor to manually swing the backrest in order to quickly put the patient into the shock position. . This is because if time passes with peripheral circulatory insufficiency, cell damage gradually progresses, the circulatory environment in capillaries deteriorates, and may eventually cause death (irreversible shock).

Further, the chair bed of the second invention is in contact with a seat portion that comes into contact with a person's buttocks, a backrest that comes into contact with the back portion of the person, a thigh receiving portion that comes into contact with the thigh of the person, and a lower leg of the person With a lower leg support,
The backrest can be fixed in a chair state that is substantially vertical upward with respect to the seat portion and a bed state that is substantially horizontal with the seat portion, and is swingable between these,
When the backrest is in the bed state, the thigh receiving part is substantially horizontal, and the lower thigh receiving part is substantially horizontal than the thigh receiving part while the person's thigh is positioned above the thigh receiving part. It is configured to lift upward.

  In the chair bed of the second invention, the backrest can be fixed between the chair state and the bed state, and can swing between them. The chair state is a state in which the backrest is substantially vertical with respect to the seat portion. The bed state is a state in which the backrest is substantially horizontal with the seat portion. In this chair bed, when the backrest is in the bed state, the thigh receiving part is substantially horizontal, but the lower thigh receiving part is substantially horizontal than the thigh receiving part while the human thigh is positioned above the thigh receiving part. Lift up. For this reason, if this chair bed is used for caregiving of the cared person, the caregiver does not need to lift the lower leg of the cared person by hand by placing the backrest in the bed state. For this reason, the caregiver can easily take care of the lower side of the care receiver under the lower leg receiving part and above the thigh receiving part.

  Therefore, the chair bed of the second invention is more practical for nursing care.

  Various means may be adopted as a specific structure configured as described above. For example, a backrest swinging mechanism that swings the backrest relative to the seat from substantially vertical to substantially horizontal, and a first crus swinging mechanism that swings the lower leg support relative to the seat from approximately vertical to approximately horizontal. And a second crus receiving part swinging mechanism that swings the crus receiving part relative to the seat so that the person's thigh is positioned above the thigh receiving part and is lifted above the thigh receiving part substantially horizontally. Can be adopted. In this case, it is preferable that the backrest swinging mechanism and the second lower leg receiving part swinging mechanism can be operated independently. This is because it is preferable to properly use the cared person in a state where it is lying normally and a state in which care is required below.

  In the chair beds of the first and second inventions, a headrest can be provided on the upper end side of the backrest. It is also possible to provide a footrest on the lower end side of the crus receiving part and to configure the footrest so as to be swingable with respect to the crus receiving part.

  In the chair beds of the first and second inventions, an armrest can be provided next to the seat. It is preferable that the armrest can be swung so that it does not get in the way when a patient or a cared person sits down or leaves the armrest, or can be removed.

  Furthermore, the chair beds of the first and second inventions are preferably configured to be movable by casters.

<Example 1>
A first embodiment embodying the first invention will be described below with reference to the drawings. In the chair bed of the first embodiment, as shown in FIG. 1, a base frame 11 is provided with a seat portion 13, a backrest 15, a thigh receiving portion 17, a crus receiving portion 19, and a footrest 21. The seat portion 13, the backrest 15, the thigh receiving portion 17, the lower thigh receiving portion 19 and the footrest 21 are each made of leather tension with a built-in cushion. These are connected so as to be swingable in the order of the backrest 15, the seat portion 13, the thigh receiving portion 17, the lower leg receiving portion 19, and the footrest 21. A headrest 23 is provided on the upper end side of the backrest 15 so as to be removable and vertically movable.

  In this chair bed, side walls 25 a and 25 b are provided on both lower sides of the seat portion 13, the thigh receiving portion 17 and the lower leg receiving portion 19. Both side walls 25a are fixed to the base frame 11, and both side walls 25b are fixed to members at the upper end of a link mechanism 31a described later. Armrests 27a and 27b are also provided on the upper end member of the link mechanism 31a. Further, four casters 29 are provided at the lower end of the base frame 11.

  As schematically shown in FIGS. 2 and 3, the base frame 11 is provided with an elevating mechanism 31. The elevating mechanism 31 includes a link mechanism 31a provided on the base frame 11 and a linear actuator 31b. The seat portion 13 is fixed to the member at the upper end of the link mechanism 31a. The linear actuator 31b is a known actuator in which the rod linearly reciprocates as the built-in DC motor rotates. The linear actuator 31b can rotate the DC motor forward or backward by operating the remote controller 43 shown in FIG. The link mechanism 31a is configured such that the upper end member moves up and down as the linear actuator 31b extends or shortens the rod.

  A backrest swing mechanism 33 is provided on the upper end member of the link mechanism 31a. The backrest swinging mechanism 33 includes a link mechanism 33a provided behind the upper end member of the link mechanism 31a, a backrest frame 33b provided on the link mechanism 33a, and a linear actuator 33c. The backrest 15 is fixed to the backrest frame 33b. The linear actuator 33c is the same as the linear actuator 31b. However, a wire is extended from the linear actuator 33c to the remote controller 43 shown in FIG. 1, and the resistance of the DC motor built in the linear actuator 33c can be released by operating this wire. The link mechanism 33a is configured such that the backrest frame 33b swings with respect to the seat portion 13 from substantially vertical to substantially horizontal when the linear actuator 33c extends or shortens the rod. The center of swinging of the backrest frame 33b is an A1 line extending horizontally.

  Further, a first crus receiving part swinging mechanism 35 is also provided on the upper end member of the link mechanism 31a. The first crus receiving part swinging mechanism 35 includes a link mechanism 35a provided in front of the upper end member of the link mechanism 31a, a first crus frame 35b provided in the link mechanism 35a, and a linear actuator 35c. is doing. The lower leg receiving portion 19 is placed on the first lower leg frame 35b. The linear actuator 35c is the same as the linear actuators 31b and 33c. The link mechanism 35a is configured such that the first crus frame 35b swings with respect to the seat portion 13 from substantially vertical to substantially horizontal when the linear actuator 35c extends or shortens the rod. . The swing center of the first lower leg frame 35b by the link mechanism 35a is a B line extending horizontally.

  Further, a footrest frame 37 is provided at the lower end of the first crus frame 35b via a known link mechanism. The footrest 21 is placed on the footrest frame 37. The footrest frame 37 is configured to be substantially horizontal regardless of the swing angle of the first crus frame 35b, except when the backrest 15 is in the shock body state described later.

  Further, as schematically shown in FIGS. 4 to 6, a second crus support part swinging mechanism 39 is also provided on the upper end member of the link mechanism 31 a. The second crus receiving part swinging mechanism 39 includes a thigh frame 39a and a second crus frame 39b. The swing center of the thigh frame 39a is a C line extending horizontally at a position close to the A1 line. The thigh receiving portion 17 is fixed to a portion of the thigh frame 39a far from the C line. The second lower leg frame 39b is swingably connected to the thigh frame 39a. The swing center of the second lower leg frame 39b with respect to the thigh frame 39a is a D line extending horizontally. The second crus frame 39b is provided at a position where it does not overlap vertically with the first crus frame 35b shown in FIGS. As shown in FIGS. 4 to 6, the second crus receiving part swinging mechanism 39 lifts the thigh frame 39a while bending the thigh frame 39a with respect to the seat part 13, and the second crus frame 39b and the first crus frame 35b. Are configured to be independently inclined downward. At this time, since the thigh receiving part 17 is lifted by the thigh frame 39a, the lower leg receiving part 19 and the footrest 21 are inclined downward.

  An interlocking mechanism 41 is provided between the backrest swinging mechanism 33 shown in FIGS. 2 and 3 and the second crus receiving part swinging mechanism 39 shown in FIGS. The interlocking mechanism 41 includes an arm 39c fixed to a portion near the C line of the thigh frame 39a, and a lever 39d that is swingably connected to the tip of the arm 39c. The swing center between the arm 39c and the lever 39d is the A2 line extending horizontally near the A1 line. On the other hand, an arm 33d is fixed to the lower end of the backrest frame 33b. This arm 33d also constitutes the interlocking mechanism 41. As shown in FIGS. 4 and 5, the arm 33d does not come into contact with the lever 39d until the backrest frame 33b reaches +5 degrees from substantially vertical to horizontal. However, as shown in FIG. 5, when the backrest frame 33 b reaches +5 degrees with respect to the horizontal, the arm 33 d comes into contact with the lever 39 d, and as shown in FIG. 6, the backrest frame 33 b has +5 degrees with respect to the horizontal. When tilted below, the arm 33d presses the lever 39d, and the thigh frame 39a swings about the C line.

  Electric power is supplied to the linear actuators 31b, 35c, and 33c shown in FIGS. These linear actuators 31b, 35c, and 33c are connected to the remote controller 43 shown in FIG. 1, and are individually and mutually controlled.

  As shown in FIGS. 2 to 6, the chair bed can have the backrest 15 fixed in a chair state, a bed state, and a shock position state, and can swing between them. This chair bed is used for dialysis treatment.

  During dialysis treatment, as shown in FIGS. 2 and 4, the chair bed may be in a chair state in which the backrest 15 is substantially perpendicular to the seat 13 upward. The chair state includes a standing state in which the backrest 15 is nearly vertical, and a reclining state in which the backrest 15 is not tilted until a bed state described later, but the backrest 15 is tilted from the vertical. Therefore, by operating the linear actuators 33c and 35c with the remote controller 43 (see FIG. 1), the patient P can sit in a favorite chair state. At this time, as shown in FIG. 7, the patient P has the buttocks P1 in contact with the seat 13, the back P2 in contact with the backrest 15, the thigh P3 in contact with the thigh receiving part 17, and the calf of the lower leg P4. It comes into contact with the lower leg receiving part 19. Further, the head P5 can contact the headrest 23 (see FIG. 1), and the back of the foot P6 can contact the footrest 21.

  Further, as shown in FIGS. 3 and 5, the chair bed is brought into a bed state in which the backrest 15 and the seat portion 13 are substantially horizontal by operating the linear actuators 33c and 35c with the remote controller 43 (see FIG. 1). obtain. The patient P can lie on his back on the chair bed in this bed state. At this time, as shown in FIG. 8, the patient P has the buttocks P1 in contact with the seat 13, the back P2 in contact with the backrest 15, the thigh P3 in contact with the thigh receiving part 17, and the calf of the lower leg P4. It comes into contact with the lower leg receiving part 19. Further, the head P5 abuts on the headrest 23 (see FIG. 1), and the heel of the foot P6 can abut on the footrest 21.

  When the patient P becomes peripheral circulatory failure while the patient P is relatively comfortable, the chair bed is changed from the chair state or the bed state to the shock position shown in FIG. That is, the backrest 15 is substantially downwardly horizontal as shown in FIG. 5, and as shown in FIG. 6, has a downward slope with the human head P5 at the lower end. This shock posture state may be performed by operating the linear actuator 33c with the remote controller 43 (see FIG. 1). However, in the case of an emergency, the resistance of the linear actuator 33c is released by the wire provided on the remote controller 43, The back 15 is tilted down manually and according to the weight of the patient P. Thus, as shown in FIG. 9, even if the patient P becomes peripheral circulatory insufficiency on the chair bed, the patient P is placed in the shock position and circulated venous blood to the heart is performed.

  In this chair bed, when the backrest 15 is inclined downward, as shown in FIG. 6, the arm 33d presses the lever 39d, the thigh frame 39a is lifted upward about the C line, and the lower leg receiving portion 19 is The foot P6 has a downward slope with the lower end. For this reason, as shown in FIG. 9, the upper body of the patient P has a downward slope with the head P5 at the lower end, but the lower leg is bent from the thigh P3 by its own weight. For this reason, the patient P is supported by the lower leg P4 and is prevented from falling from the head P5 even if there is no intention.

  In particular, in this chair bed, the thigh receiving portion 17 is lifted and the thigh P3 is bent upward from the waist. For this reason, the patient P in the shock position is in a state where the thigh P3 and the lower leg P4 are bent substantially at right angles and the knees are raised, and is more difficult to fall from the head P5.

  For this reason, this chair bed can also make the inclination angle of the backrest 15 larger, and can eliminate peripheral circulatory insufficiency more effectively.

  Therefore, this chair bed is more practical for medical use. In addition, since the chair bed can operate the second lower leg receiving portion swinging mechanism 39 by the linear actuator 33c that operates the backrest swinging mechanism 33, the manufacturing cost can be reduced.

<Example 2>
Next, a second embodiment of the second invention will be described with reference to the drawings. As shown in FIG. 1, the chair bed of the second embodiment also includes a seat portion 13, a backrest 15, a thigh receiving portion 17, and a crus receiving portion 19. The backrest 15 can be fixed in the chair state shown in FIG. 7 and the bed state shown in FIG. 8 and can swing between them.

  When the backrest 15 is in the bed state, the thigh receiving part 17 is substantially horizontal. Here, when taking care of the cared person, as shown in FIG. 10, the lower leg receiving part 19 is positioned substantially horizontally while the cared person P's thigh P3 is positioned above the thigh receiving part 17. It is configured to lift upward from the thigh receiving portion 17. Other configurations are the same as those of the chair bed of the first embodiment.

  In this chair bed, when the backrest 15 is in the bed state, the thigh receiving portion 17 is substantially horizontal, but the lower thigh receiving portion 19 is substantially horizontal while the human thigh P3 is positioned above the thigh receiving portion 17. Lifts upward from the receiving part P3. For this reason, if this chair bed is used for the care of the cared person P, the caregiver does not need to lift the lower leg P4 of the cared person P by hand by placing the backrest 15 in the bed state. For this reason, the caregiver can easily take care of the lower part P1 of the care receiver P below the lower leg receiving part 19 and above the thigh receiving part 17.

  Therefore, this chair bed is more practical for nursing care.

  In the above, the present invention has been described with reference to the first and second embodiments. However, the present invention is not limited to the first and second embodiments, and can be appropriately modified and applied without departing from the spirit of the present invention. Needless to say.

  For example, other mechanisms may be employed as the lifting mechanism 31, the backrest swinging mechanism 33, the first crus receiving part swinging mechanism 35, the second crus receiving part swinging mechanism 39 and / or the interlocking mechanism 41. .

  The chair bed of the present invention can be used for medical purposes such as dialysis treatment and nursing care.

It is a perspective view of the chair bed of Example 1,2. It is a schematic structure figure which concerns on the chair bed of Example 1, 2, and shows the chair bed of a chair state. It is a schematic structure figure which concerns on the chair bed of Example 1, 2, and shows the chair bed of a bed state. FIG. 3 is a schematic structural diagram showing a chair bed in a chair state according to the chair bed of Example 1; FIG. 3 is a schematic structural diagram showing the chair bed in the bed state according to the chair bed of the first embodiment. FIG. 3 is a schematic structural diagram showing the chair bed in a shock position related to the chair bed of the first embodiment. It is a model side view which concerns on the chair bed of Example 1, 2, and shows the chair bed of a chair state. It is a model side view which concerns on the chair bed of Example 1, 2, and shows the chair bed of a bed state. It is a model side view which concerns on the chair bed of Example 1, and shows the chair bed of a shock posture state. It is a model side view which concerns on the chair bed of Example 2, and shows a chair bed in the case of performing care in a bed state.

Explanation of symbols

P1 ... buttocks 13 ... seat P2 ... back 15 ... backrest P3 ... thigh 17 ... thigh receiving part P4 ... lower leg 19 ... lower leg receiving part

Claims (3)

A seat that contacts the buttocks of the person, a backrest that contacts the back of the person, a thigh receiving part that contacts the thigh of the person, and a lower leg receiving part that contacts the lower leg of the person,
The backrest is in a chair state that is substantially vertical upward with respect to the seat portion, a bed state that is substantially horizontal with the seat portion, and a shock posture state in which the person's head is in a downward slope with the lower end of the head. And can swing between them,
If the backrest is in the bed state, the thigh receiving part and the lower leg receiving part are substantially horizontal;
When the backrest is in the shock body position, the lower leg receiving portion is configured to have a downward slope with the person's foot at the lower end.   2. The chair bed according to claim 1, wherein when the backrest is in the shock posture state, the thigh receiving portion is configured such that the human thigh is bent from the waist. A seat that contacts the buttocks of the person, a backrest that contacts the back of the person, a thigh receiving part that contacts the thigh of the person, and a lower leg receiving part that contacts the lower leg of the person,
The backrest can be fixed in a chair state that is substantially vertical upward with respect to the seat portion and a bed state that is substantially horizontal with the seat portion, and is swingable between these,
When the backrest is in the bed state, the thigh receiving part is substantially horizontal, and the lower thigh receiving part is substantially horizontal than the thigh receiving part while the person's thigh is positioned above the thigh receiving part. A chair bed characterized by being lifted upward.

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