Patent ID: 6517503
Filing Date: 2003-02-11
Classification: A61F

Abstract:
A method for selectively locking and unlocking an orthotic device associated with a leg of a person comprising a selectively lockable orthotic joint having at least one pressure sensor; an electronic circuit associated with said pressure sensor for generating a control signal indicative of at least a threshold pressure sensed by said sensor; and the orthotic joint having a locking mechanism which can be selectively locked allowing extension and preventing flexion and unlocked allowing extension and flexion in response to the sensed pressure, comprising:sensing pressure exerted by the person's foot with the pressure sensor that communicates with the electronic circuit; and controlling the orthotic joint with the electronic circuit during walking by the person, the electronic circuit causing the orthotic joint to be in a locked position that prevents flexion and permits extension when at least a threshold pressure is sensed by the sensor and in an unlocked position when less than the threshold pressure is sensed by the sensor.