Victhom Human Bionics Inc.

Stéphane Bédard

Pierre-Olivier Roy

Marc-Olivier Imbeau

Pierre-Ollvier Roy

Sylvain Gagné

The actuated leg prosthesis comprises a knee member, a socket connector provided over the knee member, an elongated trans-tibial member having a bottom end under which is connected an artificial foot, and a linear actuator. A first pivot assembly allows to operatively connect the trans-tibial member to the knee member. A second pivot assembly allows to operatively connect an upper end of the actuator to the knee member. A third pivot assembly allows to operatively connect a bottom end of the actuator to the bottom end of the trans-tibial member. The prosthesis can be provided as either a front actuator configuration or a rear actuator configuration.

Actuated leg prosthesis for above-knee amputees

A method and a control system are used for determining a portion of locomotion and a phase of locomotion portion in view of controlling an actuated prosthesis in real time. The method comprises receiving a data signal from a plurality of main artificial proprioceptors, obtaining a first and a second derivative signal for each data signal, obtaining a third derivative signal for at least one of the data signals, using a set of first state machines to select one state among a plurality of possible states for each artificial proprioceptor with the corresponding data and derivative signals, generating the phase of locomotion portion using the states of the main artificial proprioceptors; and using a second state machine to select the portion of locomotion among a plurality of possible portions of locomotion using events associated to the data signals. It is particularly well adapted for an actuated, above-knee leg prosthesis.

Control device and system for controlling an actuated prosthesis

The present invention discloses an instrumented prosthetic foot for use with an actuated leg prosthesis controlled by a controller, the instrumented prosthetic foot comprising a connector to connect the instrumented prosthetic foot to the leg prosthesis, an ankle structure connected to the connector, a ground engaging member connected to the ankle, at least one sensor for detecting changes in weight distribution along the foot, and an interface for transmitting signals from the sensor to the controller.

Instrumented prosthetic foot

The present invention discloses an electrical power supply for providing electrical power to a load, the power supply comprising a plurality of energy storage elements each having a different operating characteristic and connected in an electrical circuit to the load, and a circuit element interposed between at least one of the storage elements and the load and operable to segregate the energy storage elements therefrom, the circuit element being selected to match supply of energy to the load to the characteristics of the storage elements.

Compact power supply

The method and the control system are used for determining a portion of locomotion and a phase of locomotion portion in view of controlling an actuated prosthesis in real time. Accordingly, the method comprises receiving a data signal from a plurality of main artificial proprioceptors, obtaining a first and a second derivative signal for each data signal, obtaining a third derivative signal for at least one of the data signals, using a set of a first state machines to select one state among a plurality of possible states for each artificial proprioceptor with the corresponding data and derivative signals, generating the phase of locomotion portion using the states of the main artificial proprioceptors; and using a second state machine to select the portion of locomotion among a plurality of possible portions of locomotion using events associated to the data signals. It is particularly well adapted for the control of an actuated leg prosthesis for above-knee amputees.

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Saint-Augustin-de-Desmaures, Canada

Stéphane Bédard