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1. (WO2018222997) LOCKING AND DAMPING MECHANISM FOR A PROSTHETIC KNEE JOINT

Pub. No.:    WO/2018/222997    International Application No.:    PCT/US2018/035608
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat Jun 02 01:59:59 CEST 2018
IPC: A61F 2/64
Applicants: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Inventors: ARELEKATTI, Venkata, N.m.
WINTER, Amos, G., V.
FISCHMAN, Jason, Z.
HUANG, Athena, Yeh
JOH, Youngjun
Title: LOCKING AND DAMPING MECHANISM FOR A PROSTHETIC KNEE JOINT
Abstract:
A high performance, low-cost passive prosthetic knee includes one or more modules to enable able-bodied gait by transfemoral amputees to improve metabolic efficiency and reduce stigma from conspicuous abnormal gaits. A stance stability module includes a latch with a virtual lock axis that automatically locks and unlocks. An early stance flexion module enables able-bodied gait during stance. Hydraulic fluid dampers ensure reliable swing phase control. A swing extension energy storage module stores and returns energy as the knee locks and unlocks, respectively. These modules may be used together, in any combination, or individually.