公开(公告)号：US20240180723A1

公开(公告)日：2024-06-06

申请号：US18285146

申请日：2022-03-29

Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION

Inventor： Tommaso LENZI ,  Lukas R. GABERT ,  Minh TRAN

IPC: A61F2/66 ,  A61F2/50 ,  A61F2/68 ,  A61F2/70 ,  A61F2/76

CPC classification number: A61F2/6607 ,  A61F2002/5043 ,  A61F2002/5072 ,  A61F2002/6621 ,  A61F2002/6836 ,  A61F2002/701 ,  A61F2002/7635

Abstract: Disclosed herein is a robotic ankle foot prosthesis that replicates the key biomechanical functions of the biological ankle and toe joints while matching the weight, size, and battery life of passive microprocessor-controlled prostheses. A single actuator powers the ankle and toe joints. The mechanism maximizes the mechanical energy regeneration during walking while imitating the physiological features of energy injection by way of the ankle joint and energy dissipation by way of the toe joint.

公开(公告)号：US20210338458A1

公开(公告)日：2021-11-04

申请号：US17269627

申请日：2019-08-28

Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION

Inventor： Tommaso LENZI ,  Minh TRAN ,  Marco CEMPINI

IPC: A61F2/64 ,  A61F2/70 ,  A61B5/11 ,  A61B5/107

Abstract: The present disclosure describes transmission systems for use in artificial joints of assistive devices, such as assistive prostheses, orthoses, and powered exoskeletons. A variable transmission is configured to automatically or manually adapt the torque profile to the demand of different locomotion tasks, such as a relatively high torque and low speed profile for a task such as standing up or ascending stairs, or a relatively low torque and high speed profile for a task such as walking.

公开(公告)号：US20240398590A1

公开(公告)日：2024-12-05

申请号：US18797168

申请日：2024-08-07

Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION

Inventor： Tommaso LENZI ,  Lukas R. GABERT ,  Connelly Ray BUCHANAN ,  Samuel WESTGARD ,  Minh TRAN

IPC: A61F2/66 ,  A61F2/50 ,  A61F2/68 ,  A61F2/70

Abstract: A semi-powered foot and ankle prosthesis (100) has a foot member (128) coupled to the ankle frame (112) and movable with respect to the ankle frame (112). A linear actuator (144) is coupled to and between the ankle frame (112) and the foot member (128) to move the foot member (128) with respect to the ankle frame (112). The linear actuator (144) has a drive motor (150). A locking mechanism (104) selectively engages the drive motor (150) to selectively lock movement of the drive motor (150) to resist a force on the foot member (128) from backdriving the linear actuator (144).