Patent ID: 11969373
Assignee: OSSUR ICELAND EHF
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. An orthopedic device comprising:
a base shell having ankle and foot receiving portions, the base shell forming an opening over a dorsal aspect thereof;
a dorsal shell contoured to generally correspond to the opening of the base shell;
at least one tightening member connectable to the base shell and extendable over the dorsal shell to secure the base shell and dorsal shell together about a user's lower leg and foot;
at least one inflatable bladder provided in the ankle receiving portion of the base shell;
a pump assembly arranged to inflate the bladder, the pump assembly situated on an anterior aspect of the at least one tightening member such that a position of the pump assembly is fixed relative to the base shell as the dorsal shell moves relative to the pump assembly to accommodate variations in the user's lower leg during gait; and
a pressure relief valve assembly situated on a posterior aspect of the base shell, the pressure relief valve assembly arranged to automatically release air from the bladder to atmosphere when pressure within the bladder exceeds a cracking pressure of the pressure relief valve assembly, the cracking pressure being selected to reduce over-inflation.