US 5,326,353 A · Leg prosthesis device having hinge assembly for kneeling

Abstract

A leg prothesis device for use as an upper leg prothesis permitting the wearer of the device to kneel thereupon comprising a first member adapted to support an upper leg prosthesis and a second member spaced from the first member adapted to support a lower leg portion connected to a foot prothesis. The first and second members are movable with respect to each other between a maximum leg angle of about 180.degree. and a minimum leg angle of about 20.degree.. A connecting member connecting the first and second members comprises three arm portions: (1) a curved portion pivotally connected at one distal end to the first member and defining a pivot axis between the first and second members; (2) a first linear portion that is integral with the curved portion; and (3) a second linear portion angularly connected to the first linear portion. The second linear portion is fixedly connected to said second member with the curved portion being pivotably connected to the first member at a point located intermediate a vertical extension of the second linear portion and a vertical axis of the second member when the leg angle is about 180.degree.. The first member is provided with a slot through which the first linear portion extends and moves.

Claims10

Dependent claims

A leg prosthesis device for permitting a wearer to kneel thereupon comprising a

(a) a first member adapted to support an upper leg prosthesis;
(b) a second member spaced from said first member adapted to support a lower leg portion connected to a foot prosthesis;
(c) said first and second members being movable with respect to each other over a range defined by a maximum leg angle of about 180.degree. and a minimum leg angle of about 20.degree.;
(d) a connecting member having
(i) a curved portion pivotally connected at one distal end to said first member and defining a pivot axis between said first and second members,
(ii) a first linear portion integral with said curved portion and angularly and integrally connected to a second linear portion, and
(iii) said second linear portion fixedly connected to said second member, said curved portion being pivotably connected to said first member at a point located intermediate a vertical extension of said second linear portion and a vertical axis of said second member when said leg angle is about 180.degree.;
and
(e) said first member having a slot through which said first linear portion extends and moves therealong having a length defining the limits of said range of leg angles.

6 more elements

A prosthetic leg device adapted to allow a wearer to kneel thereupon having

(a) an upper leg prosthesis;
(b) a lower leg prothesis pivotably connected
(i) to said upper leg prothesis by a connecting member extending form the interior of said upper leg prothesis to the interior of said lower leg prothesis and
(ii) connected to a foot prothesis;
(c) a tubular upper member positioned within and fixedly secured to said upper leg prosthesis;
(d) a tubular lower member positioned within and fixedly secured to said lower leg prosthesis;
(e) said connecting member operably connected by an upper portion thereof to said upper tubular member for rotary movement relative thereto and operably secured at a lower portion thereof to said tubular lower member, said upper portion of said connecting member rotating about a sleeve integral with one end of said upper portion and said sleeve rotating about said pin fixed to said upper tubular member, said tubular upper member provided with a cap covering the lower opening of said tubular upper member for kneeling thereupon, said cap together with said upper tubular member and said upper leg prosthesis defining a slot through which said connecting member extends to permit relative rotation of said lower tubular member and lower leg prosthesis over a range defined by a maximum leg angle of about 180.degree. and a minimum leg angle of about 20.degree., wherein said connecting member has
(i) said lower portion extending into and fixedly mounted in a parallel relationship with said tubular lower member, said pin having a pivot axis located between the longitudinal axis of said tubular upper member and the longitudinal axis of said lower portion of said connecting member and approximately along a vertical axis extending through the midpoint of said foot prosthesis at a leg angle of about 180.degree. and
(ii) a curved portion intermediate and integral to said upper portion and lower portion that extends across said longitudinal axes of said upper and lower hollow members when said leg angle is approximately 180.degree..

6 more elements

Dependencies are inferred from the claim text.

Leg prosthesis device having hinge assembly for kneeling

Life of this patent

Leg prosthesis device having hinge assembly for kneeling

Life of this patent

Abstract

Claims10