Title:
WALKING ASSISTANCE DEVICE INCORPORATING GAS STORAGE VESSEL COMPRISING A POLYMERIC CONTAINER SYSTEM FOR PRESSURIZED FLUIDS
Document Type and Number:
WIPO Patent Application WO2002039009
Kind Code:
A3
Abstract:
A walking assistance device, for example, a walking cane, a walking crutch, or walker includes a gas storage vessel for providing an ambulatory supply of medicinal gas for a user of the device. The gas storage vessel is formed from a plurality of polymeric hollow chamber having either an ellipsoidal or spherical shape and interconnected by a plurality of relatively narrow conduit sections disposed between consecutive ones of the chambers. The gas storage vessel includes a reinforcing filament wrapped around the interconnected chambers and interconnecting conduit sections to limit radial expansion of the chambers and conduit sections when filled with a fluid under pressure. The container system further includes a fluid transfer control system attached to the gas storage vessel for controlling fluid flow into and out of the gas storage vessel and a gas delivery mechanism for delivering gas from the gas storage vessel to a user in a breathable manner.
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Inventors:
IZUCHUKWU JOHN I
SANDERS STAN A
SANDERS STAN A
Application Number:
PCT/US2001/043003
Publication Date:
November 28, 2002
Filing Date:
November 08, 2001
Export Citation:
Assignee:
MALLINCKRODT INC (US)
International Classes:
F17C1/04; F17C1/16; A61H3/02; (IPC1-7): A45B9/00; F17C1/00; A61H3/00
Foreign References:
| US5476432A | 1995-12-19 | |||
| US6047860A | 2000-04-11 | |||
| US1567322A | 1925-12-29 | |||
| US4045044A | 1977-08-30 | |||
| GB1314342A | 1973-04-18 |
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