Patient bed having vertically moveable mattress

Details Patient bed having vertically moveable mattress Patient bed having vertically moveable mattress

1996-02-01

1998-01-06

Saether, Flemming

Beds

Invalid bed or surgical support

5934, 5606, 5617, A61G 7047

Patent

active

057040834

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The present invention relates to a patient bed comprising bed legs or bed base frame resting against the floor, a bed framework and a mattress, said mattress being comprised of adjacent elongated mattress elements, and said bed framework comprising the framing of the patient bed to which framing are fixed bars or similar tubular slat elements forming an essentially horizontal plane in which each tubular slat is aligned to essentially coincide in the crosswise direction of the patient bed with the corresponding furrow adapted between each pair of two adjacent mattress elements.
Beds of the above-described type are particularly used in hospitals, outpatient wards and similar premises. Patient beds have gradually been complemented with a number of useful auxiliary functions such as a variable-pitch back for elevating the patient to a sitting posture. However, a problem has been therein that when changing the bedclothes, for instance, on a bed supporting bedridden patient, at least two nurses are usually needed for lifting the patient. Moreover, such a lifting operation poses a risk of back injury to the lifting nurse.
FI patent 86,956 discloses a possible solution to the above-described problem. In this embodiment, the mattress is provided with furrows and an elevator grating adapted to the bed having bars aligned at the mattress furrows, whereby the bars will be hidden in the mattress furrows when the grating is in its lower position. The elevator grating serves for lifting the patient upward off from the plane of the mattress thus making the changing of the sheets easy. As such the arrangement is a good approach, but the elevation of the elevator grating and the patient resting thereupon consumes an unnecessarily high amount of energy.
It is an object of the present: invention to achieve a patient bed which is superior to the prior art and easier to use.
The invention makes the handling of the patient easier than in the prior art. The use of the patient bed is extremely simple and none of the routine operations require more than one nurse.


BRIEF DESCRIPTION OF THE FIGURES

In the following the invention will be examined in more detail with reference to the attached drawings, in which:
FIG. 1 is a diagrammatic, oblique, partial end view of a patient bed according to the invention;
FIG. 2 is a side view of the patient bed in one of its operating positions;
FIG. 3 is an oblique side view of the patient bed in another operating position; and
FIG. 4 is an oblique side view of the patient bed in a still further operating position.


DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 shows partially a patient bed according to the invention in an oblique end view of the bed. The bed comprises castors 1 resting against the floor, a bed framework 2 and a mattress 3. The mattress further comprises a number of mattress elements 3', 3", etc., aligned parallel in the longitudinal direction of the bed. The mattress elements are fixed to a platform 4 placed under the elements, said platform and thus also the mattress fixed to it being vertically movable by means of a actuator mechanism connected to the platform, which actuator mechanism in the embodiment illustrated in FIG. 1 comprises an electric motor 5, a rope/cable or chain 6, and deflection sheaves or chain sprockets 7, which are located essentially at the corners of the bed framework. The elevation and lowering of the platform 4, and thus the mattress 3 fixed to it, may also be implemented by means of an actuator cylinder or similar suitable device/mechanism.
To the patient bed framework 2 are attached tubes 8 or similar slat elements, which are aligned parallel to the mattress elements 3', 3" etc. so that they typically form an essentially horizontal plane, whereby each tubular slat is aligned to essentially coincide with the furrow adapted between the mattress elements in the crosswise or longitudinal direction of the bed. In the situation illustrated in FIG. 4, the mattress 3 is shown elevated to its upper position in which th

REFERENCES:
patent: 1582419 (1926-04-01), Murphy
patent: 2112702 (1938-03-01), Loibl
patent: 3945063 (1976-03-01), Matsuura
patent: 5233712 (1993-08-01), Jurus

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