Combined active and passive leg prosthesis system and a method for performing a movement with such a system
First Claim
1. A leg prosthesis system for replacing a missing lower extremity of an individual for performing a gait cycle, said leg prosthesis system comprisingat least one movable joint, a brake unit arranged to brake a movement of the movable joint, andan active drive unit arranged to actively drive the movable joint by providing power to the movable joint, which power causes the movable joint to perform a movement, whereinthe active drive unit is disconnectable from a driving relation with the movable joint,the brake unit acts on the movement of the movable joint when the active drive unit is disconnected from the movable joint, andthe leg prosthesis system is arranged such that during at least one mode of operation the active drive unit actively drives the movable joint during a first part of the gait cycle, and is disconnected from driving relation during a second part of the same gait cycle.
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Accused Products
Abstract
A combined active and passive leg prosthesis system is disclosed, and a method of performing a gait cycle by a leg prosthesis system is disclosed, for replacing a missing lower extremity of an individual to perform a gait cycle by the leg prosthesis system and/or the method. In at least one embodiment, the leg prosthesis system includes at least one movable joint, and a disconnectable active drive unit to drive the movable joint and a passive brake unit to brake the movable joint when the drive unit is disconnected.
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Citations
16 Claims
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1. A leg prosthesis system for replacing a missing lower extremity of an individual for performing a gait cycle, said leg prosthesis system comprising
at least one movable joint, a brake unit arranged to brake a movement of the movable joint, and an active drive unit arranged to actively drive the movable joint by providing power to the movable joint, which power causes the movable joint to perform a movement, wherein the active drive unit is disconnectable from a driving relation with the movable joint, the brake unit acts on the movement of the movable joint when the active drive unit is disconnected from the movable joint, and the leg prosthesis system is arranged such that during at least one mode of operation the active drive unit actively drives the movable joint during a first part of the gait cycle, and is disconnected from driving relation during a second part of the same gait cycle.
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9. A method of performing a consecutive number of gait cycles by a leg prosthesis system, which replaces a missing lower extremity of an individual, said leg prosthesis system including at least one movable joint, a brake unit, and an active drive unit, the method comprising:
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actively driving the movable joint with the active drive unit by providing power the movable joint during a first part of each gait cycle, which power causes the movable joint to perform a movement; disconnecting the active drive unit from a driving relation with the movable joint during a second part of each the gait cycle; and braking the movement of the movable joint with the brake unit when the active drive unit is disconnected from the movable joint. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification