Lower limb prosthesis

Abstract

Abstract THE LOWER LIMB PROSTHESIS INCLUDES A KNEE JOINT CONNECTING A THIGH SECTION TO A SHIN SECTION, TO WHICH A FOOT IS ATTACHED, THE KNEE JOINT INCLUDING A REAR LINK AND A YOKE-SHAPED FRONT LINK PIVOTALLY CONNECTED BETWEEN UPPER AND LOWER BODIES, AND THE REAR LINK PIVOT POINTS BEING SO POSITIONED THAT, WITH THE LOWER LIMB IN EXTENDED POSITION, AN EXTENSION OF THE CENTERLINE OF THE REAR LINK PIVOT POINTS WILL INTERSECT THE FOOT FORWARDLY OF THE HEEL, WHILE EXTENSIONS OF THE CENTERLINES OF THE REAR LINK AND FRONT LINK WILL INTERSECT ABOVE AND REARWARDLY OF THE KNEE, TO PROVIDE STABILITY. A WEDGE-SHAPED ABUTMENT, ENGAGEABLE WITH THE REAR LINK, LIMITS MOVEMENT OF THE JOINT AND IS ADJUSTABLE TO CHANGE THE POINT OF RELEASE, I.E. THE POINT AT WHICH THE KNEE JOINT WILL BEGIN TO FLEX, WHEN THE BODY MOVES FORWARDLY OVER THE FOOT, DURING WALKING. AN ELASTIC STRAP INTERCONNECTING THE FORWARD AND REAR LINKS RESISTS EXTENSION AFTER FLEXING AND PREVENTS TERMINAL IMPACT. A SHIN TUBE EXTENDS BETWEEN CLAMPS ON THE LOWER BODY OF THE KNEE JOINT AND THE FOOT, SO THAT TUBES OF DIFFERENT LENGTHS CAN BE USED TO PROVIDE DIFFERENT LENGTHS OF THE LOWER LIMB.

Inventors

• 👤 I Long
• 👤 R Long

Bibliographic Details