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US 2013/0085581 A1Published application
Frictionless vertical suspension mechanism for prosthetic feet
AssigneeOssur Hf
InventorsChristophe Lecomte, Benedikt Skulasson, Jeroen Nijiman
Life of this patent
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Abstract
A vertical suspension system for a prosthetic foot includes a first member operatively coupleable to an amputee's residual leg. The suspension system can also include a second member coupleable to a prosthetic foot. One or more upper leaf springs and one or more lower leaf springs extend between and are attached to the first and second members such that at least one of the ends of each leaf spring is rotationally fixed to the first or second members, where the upper an lower leaf springs are spaced apart from each other.
Claims25
A vertical suspension system for a prosthetic foot, comprising:
- a first member having an upper coupling location and a lower coupling location wherein the first member is adapated to be operatively coupled to an amputee's residual leg;
- a second member having an upper coupling location and a lower coupling location wherein the second member is adapated to be coupled to the prosthetic foot;
- at least one upper leaf spring having a first end portion and a second end portion that are located on opposite ends of the upper leaf spring, wherein the first end portion of the upper leaf spring is coupled to the first member's upper coupling location and the second end portion of the upper leaf spring is coupled to the second member's upper coupling location, and at least one of the upper leaf spring's first end portion and second end portion being rotationally fixed to at least one of the first member and the second member;
- and
- at least one lower leaf spring having a first end portion and a second end portion that are located on opposite ends of the lower leaf spring, wherein the first end portion of the lower leaf spring is coupled to the first member's lower coupling location and the second end portion of the lower leaf spring is coupled to the second member's lower coupling location, and at least one of the lower leaf spring's first end portion and second end portion being rotationally fixed to at least one of the first member and the second member.
2 more elements
A prosthetic foot, comprising:
- a foot plate extending from a generally vertical proximal portion to a generally horizontal distal portion, the foot plate curving downwardly and forwardly between the proximal and distal portions;
- an adapter operably coupleable to the proximal portion of the prosthetic foot and disposed forwardly of said proximal portion, the adapter operably coupleable to a prosthetic socket;
- and
- a plurality of parallel leaf springs that operably interconnect the adapter and the proximal portion of the prosthetic foot, the leaf springs spaced apart from each other and extending generally horizontally between the adapter and the proximal portion of the prosthetic foot when the prosthetic foot is at rest.
1 more element
A vertical suspension system, comprising:
- a first member having an upper coupling location and a lower coupling location;
- a second member having an upper coupling location and a lower coupling location wherein the second member is configured to be fixedly coupled to a support component, the first member being movable relative to the second member;
- at least one upper leaf spring having a first end portion and a second end portion that are located on opposite ends of the upper leaf spring, wherein the first end portion of the the upper leaf spring is coupled to the first member's upper coupling location and the second end portion of the upper leaf spring is coupled to the second member's upper coupling location, and at least one of the upper leaf spring's first end portion and second end portion being rotationally fixed to at least one of the first member and the second member;
- and
- at least one lower leaf spring having a first end portion and a second end portion that are located on opposite ends of the lower leaf spring, wherein the first end portion of the lower leaf spring is coupled to the first member's lower coupling location and the second end portion of the lower leaf spring is coupled to the second member's lower coupling location, and at least one of the lower leaf spring's first end portion and second end portion being rotationally fixed to at least one of the first member and the second member.
2 more elements
Dependencies are inferred from the claim text.