| 摘要 |
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.
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