Actuated leg prosthesis for above-knee amputees
First Claim
1. An actuated leg prosthesis for above-knee amputees, the prosthesis comprising:
- a knee member comprising a proximal connector configured to operatively attach to an amputee'"'"'s stump;
an elongated trans-tibial member having an upper end, a bottom end, a distal connector configured to operatively attach to a prosthetic foot, and a middle section comprising at least two spaced-apart bars, the trans-tibial member defining a main longitudinal axis;
a linear actuator having an upper end and a bottom end, wherein the linear actuator comprises a motor which rotates a screw in and out of a fixed follower resulting in a linear motion of the bottom end of the actuator with respect to the upper end of the actuator, thereby inducing extension or retraction of the linear actuator, at least a portion of the linear actuator being interposed between the at least two spaced-apart bars;
first means for operatively connecting the trans-tibial member to the knee member;
second means for operatively connecting the upper end of the actuator to the knee member; and
third means for operatively connecting the bottom end of the actuator to the bottom end of the trans-tibial member,wherein extension or retraction of the linear actuator induces a corresponding rotation of the knee member relative to the elongated trans-tibial member.
1 Assignment
0 Petitions
Accused Products
Abstract
The actuated leg prosthesis comprises a knee member, a socket connector provided over the knee member, an elongated trans-tibial member having a bottom end under which is connected an artificial foot, and a linear actuator. A first pivot assembly allows to operatively connect the trans-tibial member to the knee member. A second pivot assembly allows to operatively connect an upper end of the actuator to the knee member. A third pivot assembly allows to operatively connect a bottom end of the actuator to the bottom end of the trans-tibial member. The prosthesis can be provided as either a front actuator configuration or a rear actuator configuration.
-
Citations
22 Claims
-
1. An actuated leg prosthesis for above-knee amputees, the prosthesis comprising:
-
a knee member comprising a proximal connector configured to operatively attach to an amputee'"'"'s stump; an elongated trans-tibial member having an upper end, a bottom end, a distal connector configured to operatively attach to a prosthetic foot, and a middle section comprising at least two spaced-apart bars, the trans-tibial member defining a main longitudinal axis; a linear actuator having an upper end and a bottom end, wherein the linear actuator comprises a motor which rotates a screw in and out of a fixed follower resulting in a linear motion of the bottom end of the actuator with respect to the upper end of the actuator, thereby inducing extension or retraction of the linear actuator, at least a portion of the linear actuator being interposed between the at least two spaced-apart bars; first means for operatively connecting the trans-tibial member to the knee member; second means for operatively connecting the upper end of the actuator to the knee member; and third means for operatively connecting the bottom end of the actuator to the bottom end of the trans-tibial member, wherein extension or retraction of the linear actuator induces a corresponding rotation of the knee member relative to the elongated trans-tibial member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An actuated leg prosthesis for above-knee amputees, the prosthesis comprising:
-
a knee member comprising a proximal connector configured to operatively attach to an amputee'"'"'s stump; an elongated trans-tibial member having an upper end, a bottom end, and a middle section comprising at least two spaced-apart bars, the trans-tibial member defining a main longitudinal axis; a linear actuator having an upper end and a bottom end, wherein the linear actuator comprises a motor which rotates a screw in and out of a fixed follower resulting in a linear motion of the bottom end of the linear actuator with respect to the upper end of the linear actuator, thereby inducing extension or retraction of the linear actuator, at least a portion of the linear actuator being interposed between the at least two spaced-apart bars; a first pivot assembly to operatively connect the trans-tibial member to the knee member, the first pivot assembly defining a first pivot axis that is perpendicular to the main longitudinal axis; a second pivot assembly to operatively connect the upper end of the actuator to the knee member, the second pivot assembly defining a second pivot axis that is substantially parallel to the first pivot axis, the second pivot axis being spaced apart from the first pivot axis and the main longitudinal axis; and a third pivot assembly to operatively connect the bottom end of the actuator to the bottom end of the trans-tibial member, the third pivot assembly defining a third pivot axis that is substantially parallel to and spaced apart from the first pivot axis, wherein extension or retraction of the linear actuator induces a corresponding rotation of the knee member relative to the elongated trans-tibial member. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
-
20. An actuated leg prosthesis for above-knee amputees, the prosthesis comprising:
-
a prosthetic knee member for an above-knee amputee, the prosthetic knee member comprising a proximal connector configured to operatively attach to an amputee'"'"'s stump; an elongated trans-tibial member having an upper end and a bottom end, a distal connector configured to operatively attach to a prosthetic foot, the trans-tibial member defining a main longitudinal axis; a linear actuator having an upper end and a bottom end, wherein the linear actuator comprises a motor which rotates a screw in and out of a fixed follower resulting in a linear motion of the bottom end of the linear actuator with respect to the upper end of the linear actuator, thereby inducing extension or retraction of the linear actuator; a first pivot assembly to operatively connect the trans-tibial member to the knee member, the first pivot assembly defining a first pivot axis that is perpendicular to the main longitudinal axis; a second pivot assembly to operatively connect the upper end of the actuator to the knee member, the second pivot assembly defining a second pivot axis that is substantially parallel to the first pivot axis, the second pivot axis being spaced apart from the first pivot axis and the main longitudinal axis; and a third pivot assembly to operatively connect the bottom end of the actuator to the bottom end of the trans-tibial member, the third pivot assembly defining a third pivot axis that is substantially parallel to and spaced apart from the first pivot axis, wherein extension or retraction of the linear actuator induces a corresponding rotation of the knee member relative to the elongated trans-tibial member. - View Dependent Claims (21, 22)
-
Specification