Abstract: A system and method for improving stability of a wheelchair user includes a wheelchair having sensors measuring motion parameters to sense collisions and sharp turns which may unseat the user. Neuromuscular stimulating electrodes attached to extensor and flexor muscles of the user's trunk and under the command of a controller in communication with the sensors activate the muscles during turns and collisions to counteract the forces induced. A system and method for increasing manual propulsion efficiency includes sensors for sensing motion parameters indicating completion of a manual push of the wheelchair wheels and recovery from the push. Neuromuscular stimulating electrodes attached to extensor and flexor muscles of the user's trunk and under the command of a controller in communication with the sensors activate the muscles at the appropriate time in the cycle of push and recovery.

Abstract: A walker for maintaining balance and stability has extendable and retractable struts positioned within tubular legs for leveling the walker when climbing stairs, a curb or an incline. The struts on each side of the walker are connected to one another via cables which coordinate the motion of the struts so that when the front struts retract within their respective tubular legs the rear struts extend proportionally and vice versa. The cables may be arranged using pulleys mounted within the tubular legs or Bowden cables may be used within each of the tubular legs. User actuated clutches engage the cables to arrest the motion of the struts and temporarily fix them in a desired configuration.

Abstract: A system and method for improving stability of a wheelchair user includes a wheelchair having sensors measuring motion parameters to sense collisions and sharp turns which may unseat the user. Neuromuscular stimulating electrodes attached to extensor and flexor muscles of the user's trunk and under the command of a controller in communication with the sensors activate the muscles during turns and collisions to counteract the forces induced. A system and method for increasing manual propulsion efficiency includes sensors for sensing motion parameters indicating completion of a manual push of the wheelchair wheels and recovery from the push. Neuromuscular stimulating electrodes attached to extensor and flexor muscles of the user's trunk and under the command of a controller in communication with the sensors activate the muscles at the appropriate time in the cycle of push and recovery.

Abstract: A walker for maintaining balance and stability has extendable and retractable struts positioned within tubular legs for leveling the walker when climbing stairs, a curb or an incline. The struts on each side of the walker are connected to one another via cables which coordinate the motion of the struts so that when the front struts retract within their respective tubular legs the rear struts extend proportionally and vice versa. The cables may be arranged using pulleys mounted within the tubular legs or Bowden cables may be used within each of the tubular legs. User actuated clutches engage the cables to arrest the motion of the struts and temporarily fix them in a desired configuration.