Pneumatic prosthetic insert

Details Pneumatic prosthetic insert Pneumatic prosthetic insert

1990-03-15

1992-10-20

Frinks, Ronald

Prosthesis (i.e., artificial body members), parts thereof, or ai

Leg

Socket holder

623901, 128DIG20, 156242, 156245, A61F 280

Patent

active

051566290

ABSTRACT:
A removeable and adjustable prosthetic insert disposed between the stump of a limb and the socket of a prosthesis is comprised of a high strength, pliable polymeric material within which are formed a plurality of spaced air pockets, or voids, which are coupled together by a series of connecting channels, or passages. Using an air valve extending through the polymeric material and coupled to the closed air pocket/channel system, the air pockets may be inflated to fill the stump/socket interspace and provide a tight-fitting, air cushioned prosthetic socket attachment. The air inflatable prosthetic insert can accommodate changes in the condition of the stump and applies a uniform prosthetic attaching force thereto. Other embodiments also employ an inflatable air cushion and make use of spaced, solid spheres disposed between air passages arranged in a grid-like array; and pinched tubing with interconnecting air passages to form a series of inflatable nodules. An air cushion isolates the limb stump from the hard, rigid prosthesis socket for user comfort and provides a custom fit for improved control and maneuverability of the prosthetic device.

REFERENCES:
patent: 1057562 (1913-04-01), LaPoint
patent: 2267070 (1941-12-01), Baldwin
patent: 2634424 (1953-04-01), O'Gorman
patent: 3309714 (1967-03-01), Porten
patent: 4300245 (1981-11-01), Saunders
Improvements in the Air-Cushion Socket for Below-Knee Amputees, Wilson et al., Proceedings of the 2nd International Conference on Rehabilitation Engineering, Ottawa, 1984, pp. 239-240.

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