Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Ankle
Reexamination Certificate
2007-10-31
2008-08-26
Snow, Bruce (Department: 3738)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Ankle
Reexamination Certificate
active
07416565
ABSTRACT:
A transtibial patellar tendon bearing (PTB) prosthesis for below the knee amputees is disclosed. The prosthesis includes a socket, and a foot prosthesis attached to a modular shank component using a foot rotator device. Using the rotator device, the foot component of the prosthesis may be smoothly and axially rotated internally or externally ±150° with respect to the shank component about the axis of the shank component. The wide range of axial rotation enables a more even load distribution on the whole lower limb of an amputee and enables an amputee to comfortably assume a wide range of biomechanical positions, such as sitting or kneeling. A recoil spring, having a selectable tension, is positioned within the rotatable component and selectively limits and retains the relative rotation of the upper portion and the lower portions. A locking mechanism selectively prevents rotation when the foot component is engaged.
REFERENCES:
patent: 4865611 (1989-09-01), Al-Turaiki
patent: 4988361 (1991-01-01), Cooper
patent: 5156630 (1992-10-01), Rappoport et al.
patent: 5728175 (1998-03-01), Rincoe
Groover & Associates
Snow Bruce
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