Self-aligning joint assistance device

A self-aligning joint assistance device that is configured to be worn near a joint connecting a first part and a second part of a human body to assist movement of the joint, the joint assistance device comprising:

• a first member configured to be worn on the first part, and comprising a first body, a plurality of first rollers disposed on the first body, and a first sliding portion provided on a lower surface of the first body;
• a second member configured to be worn on the second part, and comprising a second body, a plurality of second rollers disposed on the second body, and a second sliding portion provided on an upper surface of the second body;
• an intermediate unit disposed between the first member and the second member, and comprising an intermediate member disposed between the first member and the second member, a first contact portion provided on the intermediate member to allow mutual sliding while in contact with the first sliding portion of the first member, a second contact portion provided on the intermediate member to allow mutual sliding while in contact with the second sliding portion of the second member, and a plurality of intermediate rollers disposed on the intermediate member;
• and
• a wire disposed to pass through at least a portion of the plurality of first rollers, the plurality of intermediate rollers, and the plurality of second rollers to provide tension in a direction in which the first member, the intermediate unit, and the second member approach each other so that the first member, the intermediate unit, and the second member mutually slide and are aligned.