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US 8,712,933 B2Granted
Systems and methods for determining muscle force through dynamic gain optimization of a muscle PID controller for designing a replacement prosthetic joint
AssigneeLifemodeler, Inc.
InventorsMilton Scott Bergeon, David Brian Jackson, Shawn Patrick McGuan
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Abstract
Systems and methods for determining muscle force are presented. Proportional, integral, and derivative control is used to simulate muscle forces for multiple muscles contributing to a kinematic profile. The simulated muscle forces are modified by dynamic gains that are calculated in order to achieve a muscle recruitment objective such as minimizing collective muscle effort while still achieving the kinematic motion.
Claims5
A method for designing a replacement joint prosthesis comprising:
- determining a kinematic profile associated with a joint;
- determining a first muscle that contributes to the kinematic profile;
- determining a second muscle that contributes to the kinematic profile;
- determining muscle forces for the first and second muscles that meet the kinematic profile and a muscle recruitment objective;
- and
- modifying the replacement joint prosthesis based, at least in part, on the muscle forces;
- wherein determining the muscle forces comprises determining dynamic gains from the first and second muscles using proportional, integral derivative control.
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Dependencies are inferred from the claim text.