Beds – Sofa bed – Reverting back
Patent
1980-11-25
1983-01-25
Frazier, Roy D.
Beds
Sofa bed
Reverting back
5 81C, A61G 700
Patent
active
043695337
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a bed for sick person.
Patients who cannot turn over by themselves must be brought--especially during long-term confinement--several times daily into a different position, i.e., for example, from the supine position into one side position and then again into the other side position. The changing of the patients' positions has heretofore been extremely troublesome and required several nurses; for the patient not only had to be turned but also had to be lifted in each case and then again placed in the middle of the bed. Especially the lifting process could furthermore be very painful for the patient, wherein there was even danger of injury to the patient--for example in case of spinal trouble.
The invention is based on the object of providing a bed for a sick person wherein patients can be subjected to positional changes without effort and in a maximally gentle way.
The mattress, which is moved to and fro on rollers in accordance with the invention, eliminates lifting of the patient when changing his position. The patient is merely turned by the nurse and thereupon (or previously) the mattress is shifted laterally in such a way that the patient again comes to lie in the zone of the middle of the bed. With the preferred embodiment shown and claimed, manual turning of the patient is likewise eliminated, in that the latter can be turned respectively into another position by means of one of the liftable rollers.
A preferred example of the bed for a sick person according to the invention will be described below in greater detail with reference to the appended drawing wherein:
FIG. 1 shows a schematic top view of a bed for a sick person according to the invention,
FIG. 2 shows a cross section through the bed along line II--II in FIG. 1,
FIG. 3 shows a cross section corresponding to FIG. 2 wherein the two outermost rollers are in a different position, and
FIG. 4 shows a cross section through the upper side of an endless chain schematically illustrated in FIG. 1.
The bed for a sick person illustrated has a conventional bed frame with a head part 1, a central part 2, and a foot part 3, articulated at 4 and 5. (The patient lies with head and torso on the head part, with his posterior and thighs on the central part, and with his lower legs and feet on the foot part.) Two chains 6, 7 are stretched alongside the bed, three traverses 8, 9, 10 being attached to these chains. Each of the traverses 8, 9, 10 carries six pairs of coaxial rollers, which pairs are arranged side by side; the roller pairs carried by the traverse 8 are denoted by 11-16 in the drawing. Thus, six rows of respectively six juxtaposed rollers are arranged at spacings along the bed. An endless belt 17 (FIGS. 2-4) encompasses all rollers and is releasably attached along its two rims to two endless chains 18, 19, the circumferences of these chains corresponding to the periphery of the belt. The chain wheels 20-23 of the chains are arranged in the corners of the head and foot parts 1 and 3, and the drive wheels 21, 23 are drivable synchronously in both directions of rotation by two drive motors 25 and 26 controlled by a combined motor control unit 24. The mattress surrounds the belt 17 as an endless cover 27 and is held in contact with the belt by adhesive friction and along the edges by large-area zippers (not shown) (brand name Velcro fasteners), so that it is entrained by the belt during its travel. The ends of the longitudinal chains 6 and 7 pass through between the upper and lower faces of the endless chain 18 or 19 and are detachably mounted to bars 28, 29 provided at the ends of the head and foot parts 1 and 3. (Arms extending between the chain runs could also project from the bars, the chains could be attached to these arms.)
The roller pairs 11-16 consist of foam material and are supported freely rotatably on axles extending in the longitudinal direction of the bed; in the drawing (FIGS. 2 and 3), merely the axles of pairs 11-14 are denoted, namely by 31-34. The traverse 8 consists of a central section 35 and two outer sect
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patent: 1616065 (1927-02-01), Rosenquist
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patent: 3810263 (1974-05-01), Taylor et al.
patent: 3854152 (1974-12-01), Chez
patent: 3947902 (1976-04-01), Conde et al.
patent: 4297753 (1981-11-01), Langren
Frazier Roy D.
Trettel Michael F.
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