Invention Grant
- Patent Title: Hydraulic prosthetic ankle
- Patent Title (中): 液压假肢踝关节
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Application No.: US13793892Application Date: 2013-03-11
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Publication No.: US08986398B2Publication Date: 2015-03-24
- Inventor: Arlo Marsh Poulson, III , Roland Christensen , Steven Heath , Henry Hsu
- Applicant: Freedom Innovations, LLC
- Applicant Address: US CA Irvine
- Assignee: Freedom Innovations, LLC
- Current Assignee: Freedom Innovations, LLC
- Current Assignee Address: US CA Irvine
- Main IPC: A61F2/66
- IPC: A61F2/66 ; A61F2/74 ; A61F2/50

Abstract:
A range of motion (ROM) prosthetic foot and passive dampening ankle joint have limited dorsiflexion-plantarflexion (up and down) pivoting to accommodate different environments, and a spring to provide resilient resistance to plantarflexion (or lowering of the toe), and to bias the foot in dorsiflexion (or raising the toe). The ankle joint has a rear pivot rearward of a hydraulic link for a smooth feel. The ankle joint has an internal bumper in a hydraulic cylinder for a smooth feel. The ankle joint has an internal hydraulic compensator disposed in the cylinder and carried by the piston to equalize volume.
Public/Granted literature
- US20140222167A1 HYDRAULIC PROSTHETIC ANKLE Public/Granted day:2014-08-07
Information query
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