Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Adjustable shank or thigh
Patent
1990-11-30
1991-09-10
Green, Randall L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Adjustable shank or thigh
623 27, 403 59, A61F 262
Patent
active
050470639
ABSTRACT:
An adjustment device for artificial limbs includes a hollow cylindrical member having an open upper section and an open bottom end, and a plate member disposed on and covering the open bottom end. A coupling member is received in the hollow cylindrical member and has a top plate portion to cover a central through opening of the plate member, and a downwardly extending post portion projecting from the top plate portion and having a diameter smaller than the central through opening. The post portion extends through the central through opening of the plate member. The hollow cylindrical member is laterally movable to adjust the position of the post portion in the central through opening. The post portion extends into a sleeve member. A mounting member has a cylindrical portion with an upper surface which is provided with a concave recess. The sleeve member is tiltably received in the concave recess so as to guide the post portion in an inclined position relative to a vertical axis of the mounting member. The lateral position of the post portion in the through opening and the inclination of the post portion relative to the vertical axis of the mounting member is adjusted to correspondingly adjust the center of gravity of an artificial limb incorporating the adjustment device to match the body equilibrium of a user.
REFERENCES:
patent: 4608054 (1986-08-01), Schroder
patent: 4676800 (1987-06-01), Chen
Green Randall L.
Willse David H.
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