University of Washington

The Ohio Willow Wood Company

University of South Florida

Murray E Maitland

James M Colvin

Evandro M Ficanha

Matthew M Wernke

Craig Lusk

Katherine Muterspaugh Steele

M Jason Highsmith

A device is provided to allow adaptation of a prosthetic or robotic foot in the medial-lateral direction, including pronation and supination of the foot using a series of articulations. Articulations are permitted in the disclosed device due to linkage systems positioned at various locations of the prosthetic foot. In particular, the device includes multiple connected linkage systems each including upper and lower portions with an articulating contact surface designed for load carriage and stability. The point of contact between the contact surfaces of each linkage system comprises the position-dependent instantaneous center of rotation of the upper portion with respect to the lower portion. The device also includes a platform coupled between the linkage systems and a base.

Robust adaptable foot prosthesis

A device is provided including a first linkage system and a second linkage system. Each linkage system may include an upper support, a lower support, and a cross bar linkage including a first cross bar and a second cross bar. The first cross bar may be configured with a first end pivotally coupled to a first end of the lower support and a second end pivotally coupled to a second end of the upper support. The second cross bar may be configured with a first end pivotally coupled to a second end of the lower support and a second end pivotally coupled to a first end of the upper support. The device may also include a flexible bridging platform coupled to one of the upper support or the lower support of the first linkage system and coupled to the upper support of the second linkage system, and a flexible strut coupled to the lower support of the second linkage system.

Medial-lateral stabilizing prosthetic ankle/foot for angled and rough ground gait

A prosthetic finger includes a crossed four (4) bar linkage system having a base formed by a base bar, two cross bars, and an interface bar that engages an object to be held. The base bar is fixed to an artificial finger of an amputee. A first cross bar has a first end pivotally mounted to a first end of the base bar and a second cross bar has a first end pivotally mounted to a second end of the base bar. The first cross bar has a second end pivotally mounted to a first end of the interface bar and the second cross bar has a second end pivotally mounted to a second end of the interface bar. The first and second cross bars are slideably interconnected to one another at a cross point which changes its location as the prosthesis grasps objects of differing sizes and shapes.

Conforming artificial finger mechanism

Growing community of inventors

Seattle, WA, United States of America

Murray E Maitland