Patent ID: 6821259
Filing Date: 2004-11-23
Classification: A61F,A61G

Abstract:
An orthosis device for providing a gravity-balanced equilibrium for a limb of a user, said orthosis device comprising:a first limb section and a second limb section, said first and second limb sections being pivotably connected in at least one degree of freedom; said first and second limb sections each further comprising: a first link and a second link, said first and second links being substantially parallel to each other; a third link and a fourth link, said third and fourth links being substantially parallel to each other and pivotably connecting corresponding opposing ends of said first and second links to thereby define a four-bar linkage; a first mounting mechanism attached to said first link and a second mounting mechanism attached to said second link, said first and second mounting mechanisms being offset from each other along a length of respective said first and second limb sections; and a spring member attaching between said first and second mounting mechanisms and being adapted to provide an equilibrium-inducing force corresponding to a combined weight of said limb section and the limb of the user.