Prosthetic foot
View Patent ↗A prosthetic foot with a base spring having a forefoot area and a heel area, a connecting means arranged above the base spring and used to fasten the prosthetic foot to a prosthesis, and a frontal support, at the upper end of which the connecting means is arranged and which, at its lower end, is secured on a torsion element that can twist amount the longitudinal axis of the prosthetic foot. The torsion element is designed as a leaf spring arrangement secured to the base spring at one end in the heal area or in the forefoot area.
1. A prosthetic foot, comprising:
a base spring having a forefoot region and a heel region;
an adapter, arranged above the base spring, to affix the prosthetic foot to a prosthesis;
a rigid support extending along at least a portion of the base spring from the heel region toward the forefoot region, the rigid support having a rear portion connected to the heel region of the base spring and a front portion movable relative to the base spring;
a frontal support, at an upper end of which the adapter is arranged and a lower end of which is pivotally connected to the front portion of the rigid support;
a fluid damper pivotally connected to the adapter, the fluid damper being pivotally connected to the rear portion of the rigid support, the fluid damper having at least one multi-axially movable joint.
2. The prosthetic foot as claimed in claim 1 , further comprising a heel spring arranged on a bottom side of the base spring.
3. The prosthetic foot as claimed in claim 2 , further comprising a damping element arranged between the base spring and the heel spring.
4. The prosthetic foot as claimed in claim 1 , wherein the frontal support is configured as a spring or spring package.
5. The prosthetic foot as claimed in claim 4 , further comprising spacer pieces, wherein the frontal support comprises separate leaf spring elements, and a clear space between the leaf spring elements is provided by the spacer pieces.
6. The prosthetic foot as claimed in claim 1 , wherein the fluid damper is secured to the rear portion of the rigid support via a heel arm.
7. The prosthetic foot as claimed in claim 1 , wherein a bottom surface of the front portion of the rigid support is curved, and the base spring is bendable during roll-over to contact the curved bottom surface of the front portion of the rigid support.
8. A prosthetic foot, comprising:
a base spring having a forefoot region and a heel region;
a heel spring arranged on a bottom side of the base spring;
a connection apparatus arranged above the base spring and configured to affix the prosthetic foot to a prosthesis, the connection apparatus comprising at least one of a proximal adapter and an adjustment core;
a rigid support extending along at least a portion of the base spring from the heel region toward the forefoot region, the rigid support having a rear portion connected to the heel region of the base spring and a front portion movable relative to the base spring;
a frontal support having an upper end and a lower end, the connection apparatus being positioned at the upper end, and the lower end is pivotally connected to the front portion of the rigid support;
a fluid damper connected to the connection apparatus, the fluid damper being pivotally connected to the rear portion of the rigid support and having at least one multi-axially movable joint.
9. The prosthetic foot as claimed in claim 8 , further comprising a damping element arranged between the base spring and the heel spring.
10. The prosthetic foot as claimed in claim 8 , wherein the frontal support is configured as a spring or spring package.
11. The prosthetic foot as claimed in claim 10 , further comprising spacer pieces, the frontal support comprising separate leaf spring elements, and a space is defined between the leaf spring elements by the spacer pieces.
12. The prosthetic foot as claimed in claim 8 , wherein the fluid damper is mounted to the connection apparatus with a hinge connection.
13. The prosthetic foot as claimed in claim 8 , further comprising a heel arm configured to connect the fluid damper to the heel portion of the rigid support.
14. The prosthetic foot as claimed in claim 8 , wherein a bottom surface of the front portion of the rigid support is curved, and the base spring is bendable during roll-over to contact the curved bottom surface of the front portion of the rigid support.