Patent ID: 7393364
Filing Date: 2008-07-01
Classification: A61F

Abstract:
1. A prosthetic ankle joint system for a user comprising: a housing having an interior cavity, a center axis in said interior cavity, and an attachment means for fixedly connecting said housing to said user; an inner cylinder disposed in said housing interior cavity wherein said inner cylinder rotates around said center axis of said housing; a keel attached to said inner cylinder; a sensor system located in said interior cavity of said housing having an angle sensor for determining said inner cylinder rotation amount respective to said housing; and a dampening system in communication with said sensor system, said inner cylinder, and said housing for controlling dampening of the rotation of said inner cylinder around said center axis of said housing, comprising: a sensory stimulus contact for attachment to said user and communicates with said microprocessor and generates proprioception sensory feedback to said user.