Energy capturing and controlling joint module for external prosthetics
View Patent ↗A prosthetic joint module to provide a variety of motions and functions similar to human joint systems during rigorous activities. The joint module includes a housing component attached to a proximal prosthetic device, an elastomeric polymer attached to the housing component and a yoke component attached to the elastomeric polymer and to a distal prosthetic device. The yoke component and distal prosthetic device are moved relative to the housing component and proximal prosthetic device causing the elastomeric polymer to distort. This distortion allows the joint module to flex, and absorb, capture, store and return the energy from the movement to of the yoke component.
1. A joint module for prosthetic devices, said joint module comprising:
a hard shell housing component having an outer surface and an inner surface which defines an open space inside of said hard shell housing;
an elastomeric component disposed within said open space and coupled to said inner surface of said hard shell housing component, said elastomeric component having a central axis hole and at least one transverse hole which extends axially between a pair of sides of said elastomeric component, said at least one transverse hole disposed a distance radially outward of said central axis hole;
an axle shaft which extends through said central axis hole;
a yoke including an outer member connecting a pair of radial arms, said pair of radial arms correspondingly directly connected to opposed ends of said axle shaft extending though said central axis hole, said elastomeric component coupled to said axle shaft and disposed between said pair of radial arms, whereby rotation of said yoke in relation to said hard shell housing distorts said elastomeric element;
a locking mechanism directly coupling said hard shell housing and said yoke, said locking mechanism configured to prevent rotation of said yolk in relation to said hard shell housing;
a proximal prosthetic attachment mechanism attached to said hard shell housing component; and
a distal prosthetic attachment mechanism attached to said yoke component.
2. The joint module for prosthetic devices of claim 1 , wherein said pair of sides of said elastomer component comprise parallel sides.
3. The joint module for prosthetic devices of claim 1 , wherein said pair of sides of said elastomer component comprise convex sides.
4. The joint module for prosthetic devices of claim 1 , wherein said pair of sides of said elastomer component comprise concave sides.
5. The joint module for prosthetic devices of claim 1 , wherein said at least one transverse hole has a cylindrical configuration.
6. The joint module for prosthetic devices of claim 1 , wherein said at least one transverse hole has a triangular configuration.
7. The joint module for prosthetic devices of claim 1 , wherein said locking mechanism allows variable fixed positioning of said yolk in relation to said hard shell housing to variably tension said polymeric component.