1
Kelvin B James: System for controlling artificial knee joint action in an above knee prosthesis. Terry M Gernstein, November 5, 1996: US05571205 (231 worldwide citation)

This invention relates to an above knee prosthesis which employs a hydraulic damper to passively regulate the angular velocity or rotation of the artificial knee joint. A programmed microprocessor recognizes common gait patterns from information received from bending moment strain and knee angle sen ...


2
Steven H Petrofsky, Christian H Reinke: Computer controlled hydraulic resistance device for a prosthesis and other apparatus. Mauch, Jacox Meckstroth & Jenkins, March 30, 1999: US05888212 (147 worldwide citation)

A computer controlled hydraulic resistance device for apparatus such as a prosthetic knee for above knee amputees, includes a solenoid actuated valve connected to control the flow of hydraulic fluid to and from a hydraulic actuator which applies resistance to the prosthetic knee or other apparatus t ...


3
Kelvin B James: System for controlling artificial knee joint action in an above knee prosthesis. Terry M Gernstein, January 24, 1995: US05383939 (136 worldwide citation)

This invention relates to an above knee prosthesis which employs a hydraulic damper to passively regulate the angular velocity or rotation of the artificial knee joint. A programmed microprocessor recognizes common gait patterns from information received from bending moment strain and knee angle sen ...


4
Hugh M Herr, Ari Wilkenfeld, Olaf Bleck: Speed-adaptive and patient-adaptive prosthetic knee. Massachusetts Institute of Technology, Knobbe Martens Olson Bear, August 26, 2003: US06610101 (130 worldwide citation)

The invention relates to an automated speed-adaptive and patient-adaptive control scheme and system for a knee prosthesis. The control scheme and system utilizes sensory information measured local to the prosthesis to automatically adjust stance and swing phase knee resistances to a particular weare ...


5
Mir Saeed Zahedi: Prosthesis control system. Chas A Blatchford & Sons, Fish & Richardson P C, April 13, 1999: US05893891 (119 worldwide citation)

An adaptive control system for an artificial limb has a piston and cylinder assembly for controlling knee joint flexion, an electronically driven motorised valve for varying the damping effect of the assembly, a proximity sensor for sensing knee flexion, and a processor circuit for mounting on the l ...


6
Steven H Petrofsky, William G Gruesbeck: Computer controlled hydraulic resistance device for a prosthesis and other apparatus. Mauch, Jacox Meckstroth & Jenkins, September 5, 2000: US06113642 (111 worldwide citation)

A computer controlled hydraulic resistance device for apparatus such as a prosthetic knee for above knee amputees, includes a two stage pilot operated solenoid valve connected to control the flow of hydraulic fluid to and from a hydraulic actuator which applies resistance to the prosthetic knee or o ...


7
Todd S Johnson, Kevin M Greig: Knee prosthesis having a tapered cam. Zimmer, August 27, 1996: US05549686 (107 worldwide citation)

A knee joint prosthesis includes femoral and tibial components. The femoral component has a cam located near the upper extreme of the posterior condyles and substantially flush with the inside surface of the posterior condyles. The prosthesis is characterized by low cam and spine contact which reduc ...


8
Finn Gramnas: Adjustable prosthesis joint. Gramtec Innovation, Gardner Carton & Douglas, September 28, 1999: US05957981 (98 worldwide citation)

An adjustable prosthesis joint, such as a prosthesis ankle or a prosthesis foot, and intended primarily for causing setting of the angular relation between an attachment means (4) forming part thereof for affixing the prosthesis joint (1) to a cooperating body part, and a detail (17) being angularly ...


9
Donald E Knoth: Hydraulic control unit for prosthetic leg. Jacox & Meckstroth, April 11, 1995: US05405409 (98 worldwide citation)

A prosthetic leg has a pivotal knee joint and a hydraulic fluid control unit connected to provide variable forces which dampen flexion and extension of the knee and also bias the leg to its extended position. The unit includes an aluminum housing lined with an axially adjustable sleeve and control b ...


10
Thomas C Adams, Lanny K Wiggins: Hydraulic control unit for prosthetic leg. Mauch Laboratories, Jacox & Meckstroth, March 3, 1992: US05092902 (94 worldwide citation)

A prosthetic leg has a pivotal knee joint and a hydraulic fluid control unit connected to provide variable forces which dampen flexion and extension of the knee and also bias the leg to its extended position. The unit includes an aluminum housing lined with an axially adjustable sleeve and control b ...