Prosthetic/orthosis spring layer(s) with composite rivet(s)
AssigneeCamp Scandinavia AB
InventorsJack Richmond, Christina Engström, Gunilla Ström, Nils Hallberg, Patrik Eriksson, Heinrich Jordan, Jeanette Jordan, Robert Törnquist
Life of this patent
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Abstract
Composite materials with certain functional or securement parameters are provided herein. Layered composite prosthetic with spring layers and composite rivets are provided. Fiber reinforced layers are grouped into keel, sole plate or other component and these components are configured to provide a spring action for the prosthetic alone or in combination. One or more composite rivets are installed to secure components together.
Claims21
A composite prosthetic foot comprising:
- a composite keel spring comprising an upper portion and a lower portion, the lower portion having a keel-toe region;
- a composite sole plate spring positioned below the composite keel spring and coupled to the composite keel spring in the keel-toe region;
- and
- a composite rivet positioned in the keel-toe region and configured to attach the composite sole plate speing to the composite keel spring in the keel-toe region,
- wherein the composite rivet comprises a layer of thermoset carbon fiber composite material, the layer of thermoset carbon fiber composite material of the rivet having been twisted via torsional rotation of the layer of thermoset carbon fiber composite material.
A composite prosthetic foot comprising:
- a first composite spring layer, the first spring layer comprising an upper portion and a lower portion;
- and
- a second composite spring layer coupled to the first spring layer,
- wherein the first spring layer is coupled to the second spring layer with a twisted carbon fiber rivet, the rivet comprising a first layer of unidirectional fiber sheet or multidirectional fiber sheet or both, the first layer having a twist present in it, the twist of the first layer imparted by the first layer having been twisted via torsional rotation of the first layer,
- wherein the second spring layer is a sole plate.
A composite prosthetic foot comprising:
- a composite J-shaped keel, the keel comprising a split pronged lower portion;
- a composite first sole plate coupled to a first prong of the split pronged lower portion, the first sole plate having a continuous exterior bottom surface with a length extending in the first prong from a heel region of the composite prosthetic foot to a first anterior distal end of the composite prosthetic foot;
- and
- a composite second sole plate coupled to a second prong of the split pronged lower portion, the second sole plate having a continuous exterior bottom surface with a length extending in the second prong from the heel region of the composite prosthetic foot to a second anterior distal end of the composite prosthetic foot;
- wherein the first sole plate is spaced apart from the second sole plate along an entire side across from the second sole plate, and
- wherein the first sole plate is coupled to the first prong of the split pronged lower portion with a first twisted carbon fiber rivet, the first twisted carbon fiber rivet having been twisted via torsional rotation of the first twisted carbon fiber rivet.
A composite prosthetic foot comprising:
- a first composite spring layer, the first spring layer comprising an upper portion and a lower portion;
- and
- a second composite spring layer coupled to the first spring layer,
- wherein the first spring layer is coupled to the second spring layer with a twisted carbon fiber rivet, the rivet comprising a first layer of unidirectional fiber or multidirectional fiber or both, the first layer having a twist present in it, the twist of the first layer imparted by the first layer having been rotationally twisted about a longitudinal reference line of the rivet,
- wherein the second spring layer is a sole plate.
Dependencies are inferred from the claim text.