A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/64 (2006.01)
Patent
CA 2079587
An artificial knee-joint provided with linkage mechanisms, where a thight part (C) and a lower-leg part (D) are mutually connected by two base linkage arms (A, B), each of which is pivotally connected at respective ends with both the lower-leg part (D) and the thigh part (C), wherein the pivotal attachment points (9, 11) of the lower- leg part (D) are disposed in moveable attachment elements (4, 5) which mutually coact in a manner such that the knee-joint will automatically either adopt a substan- tially locked or a moveable position, depending on the direction of the load acting on the knee-joint. The first attachment element (4) is pivotally connected to the two base linkage arms (A, B) extending from the thigh part and has three pivot points, wher- eas the second attachment element has two pivot points. The other base linkage arm (B) extending from the thigh part is pivotally connected to both attachment elements (4, 5). Furthermore, the second attachment element (5) is provided with a lock-stop device (13) which limits movement of the attachment element. When walking, the movement of the attachment elements contribute to automatically locking the knee- joint and to terminate a walking step in a natural fashion.
Gramtec Innovation Ab
Mccarthy Tetrault Llp
LandOfFree
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