Mobility assist for the paralyzed, amputeed and spastic person

• US 5,662,693 A
• Filed: 06/05/1995
• Issued: 09/02/1997
• Est. Priority Date: 06/05/1995
• Status: Expired due to Fees

• Current Assignee: United States Air Force
• Original Assignee: United States Of America As Represented By The Secretary Of The Air Force
• Inventors: Johnson, David C., Repperger, Daniel W.
• Primary Examiner(s): Dvorak, Linda C.
• Application Number:
  US08/461,085
• Time in Patent Office: 820 Days
• Field of Search: 607/48, 607/49, 523/64, 128/782, 602/5, 602/20, 602/4, 602/23, 602/26
• US Class Current: 607/49
• CPC Class Codes: A61F 5/01 Orthopaedic devices, e.g. splints, casts or braces

Abstract

Apparatus to actively assist neuromotor disabled to have better leg functional control/use. This system serves as a strength enhancer, support device, and attenuator of spastic motions. The disclosed orthosis is worn on the outside of the leg (or legs) and serves as an active/dynamic brace to prevent leg spasms and other untoward leg motion. It is made of lightweight material such as fiberglass or aluminum and is actuated by pneumatic gas sources which are small, portable, and carried with the device. The device is totally self contained and has no external connection. The system has applicability to patients such as: stroke (cerebral vascular accident), TBI (traumatic brain injury), Muscular Dystrophy, and some spinal cord injured.

Claims

1. An orthosis for assisting locomotion in a patient, said orthosis comprising:

a brace device, with means for attaching the brace device to a leg of said patient;

actuator means coupled to the brace device;

goniometer means for sensing patient finger motion;

control means having input from the goniometer means and output to the actuator means;

wherein the control means is driven by the patient'"'"'s fingers by signals from the goniometer means in an anthropomorphic manner similar to the leg motion, and the motion of fingers replicates motion that is desired for the legs to perform.

2. An orthosis for assisting locomotion in a patient, said orthosis comprising:

a brace device including an upper leg member, a lower leg member, a foot plate, a knee joint which is attached to the upper and lower leg members, and an ankle joint which is attached to the lower leg member and to the foot plate, with means for attaching the brace device to a leg of said patient;

sensing means including sensors coupled to said brace device;

actuator means coupled to the upper and lower leg members and including a portable pneumatic gas source and goniometer means attachable to fingers of said patient for actuating orthosis muscles in an anthropomorphic manner similar to leg motion, the motion of fingers replicating desired leg motion; and

control means having input from said sensing means and output to said actuator means, position and strength of said orthosis muscles being adaptively responsive to said sensing means input to said control means including force or operating characteristics of legs of said patient to selectively provide extended, contracted or stable leg positions.