Patient support system for wheelchairs and the like

Details Patient support system for wheelchairs and the like Patient support system for wheelchairs and the like

1986-02-14

1989-01-10

Zugel, Francis K.

Chairs and seats

Bottom or back with means to alter contour

297DIG3, 297DIG4, A47C 714, A47C 2708

Patent

active

047969482

ABSTRACT:
An improved support system for a person in a sitting attitude to vary pressures produced on affected body areas adequate to improve blood perfusion thereat. A first, primary resilient support element is provided that defines a generally centrally located opening with a second, inflatable fluid support element received therein. The inflatable support element is located to receive the ischial tuberosities thereover and is normally deflated whereby minimal pressures are generated on body areas thereover. Fluid may be supplied to the second support element to inflate same, thereby supporting a greater proportion of the body weight and lowering pressures generated on the portions contacting the first support element. A valve controllably inflates and deflates the second element. A timer may be employed to activate an air compressor to inflate the second support element after a predetermined interval. Cyclic pressure changes permit all affected body areas to enjoy good blood perfusion periodically, enhancing comfort and lessening the likelihood of development of ulcers for a person sitting on the support system. The system may be incorporated into a wheelchair.

REFERENCES:
patent: 3330598 (1967-07-01), Whiteside
patent: 3652126 (1972-03-01), Folling
patent: 3867732 (1975-02-01), Morrell
patent: 4132228 (1979-01-01), Green
patent: 4175297 (1979-11-01), Robbins et al.
patent: 4524762 (1985-06-01), Schulman
Medical & Biological Engineering & Computing publication, R. B. Roemer, May 1979, pp. 379-382.

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