Patent ID: 7717869

Claim:
An inflatable boot, comprising: an inflatable bladder for encasing a portion of a lower extremity, the bladder being formed by a liner and a cover, the bladder including at least one wall portion and a sole portion, wherein the bladder is adapted to be inflated with air to a bladder air pressure; at least one passageway fluidically interconnecting the at least one wall portion and the sole portion; a pump adapted to move external air into the sole portion of the inflatable bladder; and a bladder-pressure-triggered pressure relief valve disposed in fluid communication with the bladder and integrally coupled to the bladder cover, wherein the pressure relief valve is adapted to limit the air pressure within the bladder to less than or equal to a predetermined maximum therapeutic pressure by discharging air from within the bladder when the bladder air pressure exceeds a predetermined trigger pressure, additionally including an inlet valve disposed distally from the pump and through which air may be selectively pumped into the bladder, wherein the inlet valve is disposed on the sole portion.