Post-operative knee rehabilitative dynamometer

Details Post-operative knee rehabilitative dynamometer Post-operative knee rehabilitative dynamometer

1988-12-22

1990-07-24

Apley, Richard J.

Undertaking

272130, 272DIG5, 128 25R, A63B 2102

Patent

active

049430530

ABSTRACT:
A device for measuring changes in human joint strength including an open cell body of light weight, low density polyurethane foam body, an air tight flexible skin sealed about the foam body, the skin including a multilayer vinyl material having an opening to permit passage of air into and out of the foam body, a hose sealed about the opening with a rubber seal, one end of the hose extending into a center portion of the foam body remote from the opening, the hose channeling air passing in and out of the opening, and a gauge connected to the hose for measuring the force of air passing through the hose upon application of force against the foam body.

REFERENCES:
patent: 2507858 (1950-05-01), Kiegel
patent: 3081634 (1963-03-01), Blaszkowski
patent: 4048985 (1977-09-01), Sasse
patent: 4114449 (1978-09-01), Dikeman et al.
patent: 4216956 (1980-08-01), Yamamura et al.
patent: 4530496 (1985-07-01), Smith et al.
patent: 4580778 (1986-04-01), Van Noord
patent: 4592371 (1986-06-01), Pellicano et al.
patent: 4653514 (1987-03-01), Shapiro

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