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US 10,299,942 B2Granted
Prosthetic foot insert and prosthetic foot
AssigneeOttobock SE & Co. Kgaa
InventorsLüder Mosler, Carsten Mönicke
Life of this patent
Estimating the term…
Abstract
A prosthetic foot insert with upper attachment member, a roof spring extending forwards from the upper attachment means, and a base spring coupled to the roof spring at least two points. A rear coupling element is provided for supporting the base spring, and a free space is formed between the coupling element, the roof spring and the base spring. The base spring, in the heel area, protrudes rearwards as a free lever beyond the rear coupling element.
Claims24
A prosthetic foot insert, comprising:
- an upper attachment member;
- a roof spring extending forward from the upper attachment member and a front end with an anterior-most edge;
- a base spring;
- a front coupling element extending between the base spring and the roof spring at the anterior-most edge of the roof spring;
- a rear coupling element provided for supporting the base spring at a location spaced posterior of the front coupling element, the rear coupling element being arranged substantially in vertical alignment with the upper attachment member;
- a free space formed between the front coupling element, the rear coupling element, the roof spring, and the base spring;
- wherein a heel area of the base spring protrudes rearward as a free lever beyond a rear edge of the rear coupling element, and a ratio of a length of the base spring forward of the rear edge of the rear coupling element to a length of the free lever is in the range of about 4:1 to about 4.6:1;
- wherein the base spring bends about an axis extending parallel to the base spring and perpendicular to a walking direction during a heel strike event to provide three point bending to move a middle portion along a length of the base spring away from the roof spring in the area of the free space during the heel strike event.
5 more elements
A prosthetic foot insert, comprising:
- an upper attachment member;
- a roof spring connected to the upper attachment member and having a front end with an anterior-most edge;
- a base spring;
- a front coupling element extending between the base spring and the roof spring at the anterior-most edge of the roof spring;
- a rear coupling element extending between the base spring and the roof spring at a location spaced posterior of the front coupling element, the rear coupling element substantially vertically aligned with the upper attachment member;
- a free space formed between the front coupling element, the rear coupling element, the roof spring, and the base spring;
- wherein a heel area of the base spring protrudes rearward as a free lever beyond a rear edge of the rear coupling element, and a ratio of a length of the base spring forward of the rear edge of the rear coupling element to a length of the free lever is in the range of about 4:1 to about 4.6:1;
- wherein the base spring bends about an axis extending parallel to the base spring and perpendicular to a walking direction during a heel strike event to provide three point bending to move a middle portion along a length of the base spring away from the roof spring in the area of the free space during the heel strike event.
5 more elements
A prosthetic foot insert, comprising:
- an upper attachment member;
- a roof spring extending forward from the upper attachment member and having a front end with an anterior-most edge;
- a base spring;
- a front coupling element extending between the base spring and the roof spring at the anterior-most edge of the roof spring;
- a rear coupling element provided for supporting the base spring at a location spaced posterior of the front coupling element, the rear coupling element being substantially positioned in vertical alignment with the upper attachment member;
- a free space formed between the front coupling element, the rear coupling element, the roof spring, and the base spring;
- wherein a heel area of the base spring protrudes rearward as a free lever beyond a rear edge of the rear coupling element, and a ratio of a length of the base spring forward of the rear edge of the rear coupling element to a length of the free lever is in the range of about 4:1 to about 4.6:1;
- wherein the base spring bends about an axis extending parallel to the base spring and perpendicular to a walking direction during a heel strike event to provide three point bending to move a middle portion along a length of the base spring away from the roof spring in the area of the free space during the heel strike event;
- and
- wherein the free space present between the roof spring and the base spring decreases in size when a forefoot is loaded.
7 more elements
A prosthetic foot insert, comprising:
- an upper attachment member;
- a roof spring extending forward from the upper attachment member and having a front end with an anterior-most edge;
- a base spring;
- a front coupling element extending between the base spring and the roof spring at the anterior-most edge of the roof spring, wherein the front coupling element is designed as an elastomeric element and arranged between a front end of the base spring and an upwardly sloping part of the base spring;
- a rear elastomeric coupling element provided for supporting the base spring at a location spaced posterior of the front coupling element, the location being substantially vertically aligned with the upper attachment member;
- a free space formed between the front coupling element, the rear coupling element, the roof spring, and the base spring;
- wherein a heel area of the base spring protrudes rearward as a free lever beyond a rear edge of the rear coupling element, and a ratio of a length of the base spring forward of the rear edge of the rear coupling element to a length of the free lever is in the range of about 4:1 to about 4.6:1;
- wherein the base spring bends about an axis extending parallel to the base spring and perpendicular to a walking direction during a heel strike event to provide three point bending to move a middle portion along a length of the base spring away from the roof spring in the area of the free space during the heel strike event.
5 more elements
Dependencies are inferred from the claim text.