1
Sigurdur Asgeir Asgeirsson, Charles R Bisbee III, Henry H Hsu: Systems and methods of controlling pressure within a prosthetic knee. Össur hf, Knobbe Martens Olson & Bear, April 6, 2010: US07691154 (66 worldwide citation)

The invention in some embodiments relates to systems and methods of controlling pressure within a prosthetic knee. The knee in one embodiment comprises a flexible diaphragm that substantially prevents or mitigates undesirable pressure build-up in a sealed chamber of the knee. The knee in another emb ...


2
Charles R Bisbee III, Henry H Hsu: Dynamic seals for a prosthetic knee. Össur hf, Knobbe Martens Olson & Bear, November 25, 2008: US07455696 (66 worldwide citation)

The invention in some embodiments relates to a dynamic seal for a prosthetic knee. The dynamic seal in one embodiment is utilized to seal a magnetorheological fluid comprising a liquid and solid particles within a chamber of the knee. The dynamic seal embodiments are specially configured with a pre- ...


3
Henry Hsu, Charles R Bisbee III, Michael Lars Palmer, Ronald J Lukasiewicz, Michael W Lindsay, Stephen W Prince: Magnetorheological fluid compositions and prosthetic knees utilizing same. Ossur Engineering, Knobbe Martens Olson & Bear, September 5, 2006: US07101487 (63 worldwide citation)

The present invention relates in one embodiment to magnetorheological fluids utilized in prosthetic joints in general and, in particular, to magnetorheological fluids utilized in controllable braking systems for prosthetic knee joints. Preferred magnetorheological fluids of the present invention com ...


4
Charles R Bisbee III, Henry H Hsu: Systems and methods of loading fluid in a prosthetic knee. Össur Engineering, Knobbe Martens Olson & Bear, April 3, 2007: US07198071 (62 worldwide citation)

The invention in some embodiments relates to systems and methods of loading fluid in a prosthetic knee. A vacuum fill technique is utilized in one embodiment to load magnetorheological fluid within small gaps in a chamber of a prosthetic knee. Advantageously, this allows for an efficient loading sch ...


5
Henry Hsu, Charles R Bisbee III, Michael Lars Palmer, Ronald J Lukasiewicz, Michael W Lindsay, Stephen W Prince: Magnetorheological fluid compositions and prosthetic knees utilizing same. Ossur HF, Knobbe Martens Olson & Bear, February 26, 2008: US07335233 (32 worldwide citation)

The present invention relates in one embodiment to magnetorheological fluids utilized in prosthetic joints in general and, in particular, to magnetorheological fluids utilized in controllable braking systems for prosthetic knee joints. Preferred magnetorheological fluids of the present invention com ...


6
Michael L Palmer, Charles R Bisbee III: Computer controlled prosthetic knee device. Freedom Innovations, Luce Forward Hamilton and Scripps, Marlan Walker, Peter Gluck, February 2, 2010: US07655050 (28 worldwide citation)

A prosthetic knee provides a single axis of rotation and includes a hydraulic damping cylinder, a microprocessor, and sensors. Based on input from the sensors, the microprocessor selects a flow path within the hydraulic cylinder in order to provide the proper amount of knee resistance to bending for ...


7
Charles R Bisbee III, Scott B Elliott, Magnus Oddson: Control system and method for a prosthetic knee. Ossur hf, Knobbe Martens Olson & Bear, December 31, 2013: US08617254 (12 worldwide citation)

A prosthetic or orthotic system including a magnetorheological (MR) damper. The MR damper may be configured to operate in shear mode. In one embodiment, the MR damper includes a rotary MR damper. A controller is configured to operate the damper. A mobile computing device may be adapted to intermitte ...


8
Charles R Bisbee III, Scott B Elliott, Magnus Oddsson: Control system and method for a prosthetic knee. Össur hf, Knobbe Martens Olson & Bear, May 24, 2016: US09345591 (5 worldwide citation)

A prosthetic or orthotic system including a magnetorheological (MR) damper. The MR damper may be configured to operate in shear mode. In one embodiment, the MR damper includes a rotary MR damper. A controller is configured to operate the damper. A mobile computing device may be adapted to intermitte ...


9
Michael L Palmer, Charles R Bisbee III: Method and apparatus for mimicking human gait with prosthetic knee devices using a state controller to assist in stumble recovery. Freedom Innovations L L C, Snell & Wilmer, February 18, 2014: US08655808 (2 worldwide citation)

The present invention relates to a prosthetic device including a prosthetic joint which accurately transitions between a loose mode and a stiff mode to more accurately mimic a human gait. The prosthetic joint includes a state controller which utilizes a sensor to detect prosthetic joint movement dat ...


10
Michael L Palmer, Charles R Bisbee III: Method and apparatus for mimicking human gait with prosthetic knee devices and detecting when stumble recovery is needed. Freedom Innovations L L C, February 17, 2015: US08959038 (2 worldwide citation)

The present invention relates to a prosthetic device including a prosthetic joint which accurately transitions between a loose mode and a stiff mode to more accurately mimic a human gait. The prosthetic joint includes a state controller which utilizes a sensor to detect prosthetic joint movement dat ...