Transfemoral prosthesis for walking, sitting- standing, stair climbing

Patent metadata

Field	Value
Publication number	US-12508136-B2
Application number	US-202117924123-A
Country	US
Kind code	B2
Filing date	Dec 30, 2021
Priority date	Dec 30, 2020
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A prosthesis or orthosis device includes a knee joint connectable with the user's leg; a swing storage spring-gear mechanism comprising a balancing spring inserted in an ankle member housing located in an ankle member, a drive gear, a driven gear, an intermediate gear and a gear rod, and a foot part comprising a dorsiflexion spring; a lower leg connecting a knee joint and a foot part to each other, in which a weight-receiving member is located; and a swing storage mechanism connected to the foot part by a second housing of the connection tube and a gear rod pin, and to the knee joint by a first housing of the connection tube and a first housing of the knee joint; and a weight-receiving mechanism comprising a weight-receiving member and a compression arm and a lock fork for activating and deactivating the weight-receiving member.

First claim

What is claimed is:

1 . A prosthesis or orthosis device comprising:
a knee joint connectable with a leg of a user; a swing storage spring-gear mechanism comprising a balancing spring inserted in an ankle member housing located in an ankle member, a drive gear, a driven gear, an intermediate gear and a gear rod, and a foot part comprising a dorsiflexion spring, wherein the balancing spring is configured to prevent a foot from returning to 0 degrees with respect to a ground and striking the ground once again after a push-off; a lower leg connecting the knee joint and the foot part to each other, wherein a weight-receiving member is located in the lower leg, wherein the lower leg is connected to the knee joint, and the lower leg is connected to the foot part through the ankle member housing; a swing storage mechanism connected to the foot part by a second housing of a connection tube and a gear rod pin, and to the knee joint by a first housing of the connection tube and a first housing of the knee joint, wherein the swing storage mechanism comprises a swing adaptation mechanism consisted of nested connection member tubes and a connection member swing storage spring located in the nested connection member tubes, a spring cover, a guide screw and a brushless direct current (BLDC) motor, wherein the swing adaptation mechanism stores energy generated at different walking speeds, wherein a dorsiflexion spring tube containing the dorsiflexion spring is connected to the front of the foot part through a toe tip housings, and a piston rod pressing the dorsiflexion spring tube is connected to the ankle member at a back of a foot of the lea of the user, wherein the swing storage mechanism is configured to move in the foot part between at least two positions by the swing storage spring-gear mechanism; and
a weight-receiving mechanism comprising the weight-receiving member and a compression arm and a lock fork for activating and deactivating the weight-receiving member,
wherein the compression arm is connected to the knee joint through a compression spring housing, a knee joint third housing and a shaft, and to the weight-receiving member through a weight-receiving housing, wherein a lower end of the support arm is connected to the lower leg through lower leg housings and an upper end of the support arm is connected to the lock fork through a lock fork housing.

2 . The prosthesis or orthosis device according to claim 1 , wherein the weight-receiving member is a spring.

3 . The prosthesis or orthosis device according to claim 2 , further comprising a posture adaptation mechanism comprising a guide rail and a carrier connected to the compression arm, wherein the posture adaptation mechanism adjusts the compression arm in a knee axis by a movement of the carrier on the guide rail in accordance with a walking speed, in order to increase or decrease a torque formed around a knee of the leg of the user in accordance with the walking speed.

4 . The prosthesis or orthosis device according to claim 2 , further comprising an ankle lock mechanism comprising an ankle shaft gear configured to retain the ankle to be locked, a first member of an ankle lock, a second member of the ankle lock, a third member of the ankle lock, a fourth member of the ankle lock, and a fifth member of the ankle lock.

5 . The prosthesis or orthosis device according to claim 2 , wherein the weight-receiving mechanism is configured to allow 75°-110° flexion of a knee of the leg of the user while sitting, the weight-receiving mechanism presses the weight-receiving member and stores energy, and the weight-receiving mechanism resets the weight-receiving member while standing up, thereby providing sit-to-stand support.

6 . The prosthesis or orthosis device according to claim 2 , wherein heel springs configured to provide shock absorption are connected to the foot part at a lower end by a right heel spring holder and a left heel spring holder, and are connected to foot right and left sides at an upper end by a heel spring connector.

7 . The prosthesis or orthosis device according to claim 2 , further comprising a motor located at an end of the weight-receiving member and providing power.

8 . The prosthesis or orthosis device according to claim 1 , further comprising a posture adaptation mechanism comprising a guide rail and a carrier connected to the compression arm, wherein the posture adaptation mechanism adjusts the compression arm in a knee axis by a movement of the carrier on the guide rail in accordance with a walking speed, in order to increase or decrease a torque formed around a knee of the lea of the user in accordance with the walking speed.

9 . The prosthesis or orthosis device according to claim 8 , further comprising an ankle lock mechanism comprising an ankle shaft gear configured to retain the ankle to be locked, a first member of an ankle lock, a second member of the ankle lock, a third member of the ankle lock, a fourth member of the ankle lock, and a fifth member of the ankle lock.

10 . The prosthesis or orthosis device according to claim 8 , wherein the weight-receiving mechanism is configured to allow 75°-110° flexion of the knee of the leu of the user while sitting, the weight-receiving mechanism presses the weight-receiving member and stores energy, and the weight-receiving mechanism resets the weight-receiving member while standing up, thereby providing sit-to-stand support.

11 . The prosthesis or orthosis device according to claim 8 , wherein heel springs configured to provide shock absorption are connected to the foot part at a lower end by a right heel spring holder and a left heel spring holder, and are connected to foot right and left sides at an upper end by a heel spring connector.

12 . The prosthesis or orthosis device according to claim 8 , further comprising a motor located at an end of the weight-receiving member and providing power.

13 . The prosthesis or orthosis device according to claim 1 , further comprising an ankle lock mechanism comprising an ankle shaft gear configured to retain the ankle to be locked, a first member of an ankle lock, a second member of the ankle lock, a third member of the ankle lock, a fourth member of the ankle lock, and a fifth member of the ankle lock.

14 . The prosthesis or orthosis device according to claim 13 , wherein the weight-receiving mechanism is configured to allow 75°-110° flexion of a knee of the leg of the user while sitting, the weight-receiving mechanism presses the weight-receiving member and stores energy, and the weight-receiving mechanism resets the weight-receiving member while standing up, thereby providing sit-to-stand support.

15 . The prosthesis or orthosis device according to claim 13 , wherein heel springs configured to provide shock absorption are connected to the foot part at a lower end by a right heel spring holder and a left heel spring holder, and are connected to foot right and left sides at an upper end by a heel spring connector.

16 . The prosthesis or orthosis device according to claim 1 , wherein the weight-receiving mechanism is configured to allow 75°-110° flexion of a knee of the lea of the user while sitting, the weight-receiving mechanism presses the weight-receiving member and stores energy, and the weight-receiving mechanism resets the weight-receiving member while standing up, thereby providing sit-to-stand support.

17 . The prosthesis or orthosis device according to claim 16 , wherein heel springs configured to provide shock absorption are connected to the foot part at a lower end by a right hee

Assignees

• Univ Ozyegin

Inventors

• Unal Ramazan
• Gediksiz Ege

Classifications

• A61F2002/701

  operated by electrically controlled means, e.g. solenoids or torque motors · CPC title

• A61F2002/6836

  Gears specially adapted therefor, e.g. reduction gears · CPC title

• A61F2002/607

  Lower legs · CPC title

• A61F2/6607

  Ankle joints · CPC title

• A61F2/68

  Operating or control means · CPC title