STRETCHER ARRANGEMENT FOR APPLYING A STRETCHING MOVEMENT TO A PERSON

Abstract

A stretcher arrangement (2) comprising a first sheet (4) and a second sheet (6) to be arranged on a bed (8) having a first end (10) and a second end (12), and a length L along a longitudinal axis A. The first sheet (4) comprises a first surface (14), being a part of the first sheet that faces upward when the sheet is arranged on the bed (8). The second sheet (6) comprises a second surface (16), being a part of the second sheet (6) that faces upward when the sheet is arranged on the bed (8). The first surface (14) and the second surface (16) cover different parts of the bed surface, and border each other along a border line B that at least partly is essentially perpendicular to said axis A. The stretcher arrangement (2) further comprises: a sheet movement unit (18) structured to apply movement to at least one of said first and second sheets (4, 6) essentially along the longitudinal axis A of said bed; a control unit (20) configured to control said sheet movement unit (18), according to a set of sheet movement rules, such that a relative movement between said first surface (14) and said second surface (16) is provided, moving these surfaces apart from each other, resulting in that a stretching movement is applied to a person lying on the sheets.

Claims

1. A stretcher arrangement comprising a first sheet and a second sheet to be arranged on a bed having a first end and a second end, and a length L along a longitudinal axis A, the first sheet comprises a first surface, being a part of the first sheet that faces upward when the first sheet is arranged on the bed, the second sheet comprises a second surface, being a part of the second sheet that faces upward when the second sheet is arranged on the bed, wherein said first surface and said second surface cover different parts of the bed surface, and border each other along a border line B that at least partly is essentially perpendicular to said axis A, wherein said stretcher arrangement444 further comprises: a sheet movement unit structured to apply movement to at least one of said first and second sheets essentially along the longitudinal axis A of said bed; a control unit configured to control said sheet movement unit, according to a set of sheet movement rules, such that a relative movement between said first surface and said second surface is provided, moving these surfaces apart from each other, resulting in that a stretching movement is applied to a person lying on the sheets.

2. The stretcher arrangement according to claim 1, wherein said first surface and said second surface together cover essentially the entire bed surface.

3. The stretcher arrangement according to claim 1, wherein said border line B is provided at a position in the range of 0.3-0.7 L, preferably 0.4-0.6 L.

4. The stretcher arrangement according to claim 1, wherein said sheet movement unit is structured to be arranged in connection with at least one of said first and second ends of said bed, and comprises at least one roller to be arranged essentially perpendicular to said longitudinal axis A, wherein said control unit is configured to control the rotation of said at least one roller, such that at least one of said first and second sheets is slowly wound up on said at least one roller, resulting in that said first and second surfaces slowly move in relation to each other.

5. The stretcher arrangement according to claim 1, wherein the first sheet-(4) is configured to be arranged on said bed and to extend from one of said first and second ends of the bed, and the second sheet has a length that covers a predetermined part of said bed, and that said second sheet is configured to be arranged on said first sheet such that it covers at least a part of said first sheet, and to extend from the other of said first and second ends (10, 12) of the bed.

6. The stretcher arrangement according to claim 5, wherein said first sheet is moved in a direction away from the other of said first and second ends of the bed.

7. The stretcher arrangement according to claim 5, wherein a first short side of said first sheet is provided with an elastic attachment member structured to be attached to an attachment arrangement configured to be arranged in connection the other of said first and second ends of said bed.

8. The stretcher arrangement according to claim 7, wherein the second sheet has a first short side provided with a second sheet attachment member structured to be attached to said attachment arrangement such that said second sheet is arranged on top of said first sheet.

9. The stretcher arrangement according to claim 1, wherein at least one of said first and second sheets is provided with a low frictional material on the side(s) facing downward when the sheets are arranged at the bed.

10. The stretcher arrangement according to claim 1, wherein at least one of said first and second sheets is provided with one or many elastic sections, and wherein an elastic section has a higher elasticity along axis A in comparison to non-elastic sections of said at least one of said first and second sheets.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG. 1 is a schematic illustration of a side view of a stretcher arrangement according to the present invention arranged on a bed.

[0019] FIG. 2 is a schematic illustration of a view from above of a stretcher arrangement according to the present invention arranged on a bed.

[0020] FIG. 3 is a schematic illustration of a side view of a stretcher arrangement according to one embodiment of the present invention arranged on a bed.

[0021] FIG. 4 is a schematic illustration of a view from above of a stretcher arrangement according to one embodiment of the present invention arranged on a bed.

DETAILED DESCRIPTION

[0022] The stretcher arrangement will now be described in detail with references to the appended figures. Throughout the figures the same, or similar, items have the same reference signs. Moreover, the items and the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.

[0023] First with reference to the schematic illustrations of FIGS. 1 and 2, a stretcher arrangement 2 is provided, comprising a first sheet 4 and a second sheet 6 to be arranged on a bed 8 having a first end 10 and a second end 12, and a length L (e.g. 200 or 210 cm) along a longitudinal axis A.

[0024] The first sheet 4 comprises a first surface 14, being a part of the first sheet that faces upward when the sheet is arranged on the bed 8, and the second sheet 6 comprises a second surface 16, being a part of the second sheet 6 that faces upward when the sheet is arranged on the bed 8.

[0025] The first surface 14 and the second surface 16 cover different parts of the bed surface, and border each other along a border line B that at least partly is essentially perpendicular to said axis A.

[0026] The stretcher arrangement 2 further comprises a sheet movement unit 18 structured to apply movement to at least one of the first and second sheets 4, 6 essentially along the longitudinal axis A of the bed. The stretcher arrangement also comprises a control unit 20 configured to control the sheet movement unit 18, according to a set of sheet movement rules, such that a relative movement between the first surface 14 and the second surface 16 is provided, moving these surfaces apart from each other, resulting in that a stretching movement is applied to a person lying on the sheets. The sheet movement rules comprise at least one of the following rules:

[0027] Applying a stretching movement rate: e.g. 1-10 cm per hour, may be variable.

[0028] Applying a movement program: periodical movement, e.g. movement e.g. every 0.5 hours.

[0029] Starting of program: delay e.g. 20, 40 or 60 minutes.

[0030] As one example, one of the first and second sheets is moved and the other is kept still. In FIGS. 1 and 2 a solid arrow is used to indicate that the first sheet 4 is intended to be moved and the second sheet 6 is kept still. The dashed arrow on the second sheet 6 indicates that also this sheet 6 may be moved, at the same time as the first sheet is moved.

[0031] Preferably, the first surface 14 and said second surface 16 together cover essentially the entire bed surface.

[0032] The border line B is advantageously provided at a position in the range of 0.4-0.6 L. In the figure the border line B is shown approximately at a middle position along axis A, i.e. at 0.5 L. The position of the border line B may be such that a person lying on the bed has his/her waistline approximately on the border line B.

[0033] According to one embodiment, which is illustrated in FIG. 3, the sheet movement unit 18 is structured to be arranged in connection with at least one of the first and second ends 10, 12 of the bed, and comprises at least one roller 22 to be arranged essentially perpendicular to the longitudinal axis A. The control unit 20 is configured to control the rotation of the at least one roller 22, such that at least one of the first and second sheets 4, 6 is slowly wound up on the at least one roller 22, resulting in that the first and second surfaces slowly move in relation to each other.

[0034] The roller 22 is driven by an electrical motor having a capability of generating the necessary force to apply the stretching movement to the sheet. The rotational force needed to be applied by the motor is dependent upon the weight of the person lying on the sheets. The motor is thereby configured to generate a variable output torque in dependence of the weight, The weight may be manually entered to the control unit, or may be indirectly determined by measuring the current consumed by the motor.

[0035] In the figures only one sheet movement unit is shown. Naturally, another sheet movement unit, including a roller may be arranged at the opposite end of the bed being adapted to apply movement to the other sheet.

[0036] Furthermore, herein the sheet movement unit is exemplified to comprise a motor and a roller. Naturally, other means to provide movement to the sheet(s) may be considered, e.g. an elastic force generating arrangement provided to generate movement force to the sheet(s).

[0037] According to another embodiment, the first sheet 4 is configured to be arranged on the bed 8 and to extend from one of the first and second ends 10, 12 of the bed 8, and the second sheet 6 has a length that covers a predetermined part of the bed 8. The predetermined part may be in the range of 30-70%, and more preferred 40-60%, e.g. 50%, of the entire bed area. The second sheet 6 is configured to be arranged on the first sheet 4 such that it covers, i.e. overlaps, at least a part of the first sheet 4, and to extend from the other of said first and second ends 10, 12 of the bed.

[0038] The sheet movement unit 18 is structured to apply a movement to the first sheet 4 such that it is moved in a direction away from the other of said first and second ends 10, 12 of the bed.

[0039] In a further embodiment, illustrated in FIG. 3, a first short side 24 of the first sheet 4 is provided with an elastic attachment member 26 structured to be attached to an attachment arrangement 28 configured to be arranged in connection the other of the first and second ends 10, 12 of the bed. Thereby the first sheet 4 is remained stretched during the slow movement applied by the sheet movement unit 18, and also, when the movement procedure has been finalized and the person has left the bed, the first sheet 4 may return to its initial position by forces applied from the elastic attachment member 26, i.e. move to the right in FIG. 3. The elastic attachment member 26 may comprise a number of flat, flexible and elastic bands, e.g. rubber bands.

[0040] Preferably, the second sheet 6 has a first short side 30 provided with a second sheet attachment member 32 structured to be attached to the attachment arrangement 28 such that the second sheet 6 is arranged on top of the first sheet 4, and remains in its position during movement of the first sheet 4 (to the left FIG. 3).

[0041] According to another embodiment, at least one of the first and second sheets 4, 6 is provided with a low frictional material on the side(s) facing downward when the sheets are arranged at the bed. This low frictional material may e.g. be a Teflon-like material, or a silk material. This feature will further facilitates easy movement of the sheet as the friction to the underlying upper surface of the bed is reduced.

[0042] According to still another embodiment, and with references to FIG. 4, at least one of the first and second sheets 4, 6 is provided with one or many elastic sections 34, and wherein an elastic section has a higher elasticity along axis A in comparison to non-elastic sections 36 of the at least one of said first and second sheets 4. 6, It is then possible to tailor the sheet(s) to a person's specific needs. For example, it may then be advantageous to position the sheet such that one elastic section essentially is positioned where the person's knees are lying if the person has knee problems. During movement of a. sheet the non-elastic sections 36 will move apart from each other.

[0043] The control unit 20 is configured to control the sheet movement unit 18 and is configured to receive user input via a user input interface. The user input interface may be integrated into the control unit or attached to the control unit via a wire. As an alternative a remote input interface may be provided, e.g. as a remote control unit, configured to communicate with the control unit via a wireless interface, e.g, via an infrared (IR) communication protocol, via Bluetooth, or via an interact protocol. The remote input interface may also be an application program downloaded on a smartphone. The user input interface facilitates the user to easily choose any available movement rule and set a plurality of different parameters in order to tailor the movement to his/her specific needs.

[0044] The present invention is not limited to the above-described preferred embodiments. Various alternatives, modifications and equivalents may be used. Therefore, the above embodiments should not be taken as limiting the scope of the invention, which is defined by the appending claims.