Adjustable prosthesis leg
AssigneeOssur Iceland Ehf
InventorHsin-Fa Shen
Life of this patent
Estimating the term…
Abstract
A prosthetic system includes a prosthetic knee having a controller and a hydraulic unit pivotally connected to the controller. The hydraulic includes a reserve hydraulic cylinder, a brake hydraulic cylinder, and a hydraulic cylinder having a lower hydraulic compartment. A flow system fluidly connects the hydraulic cylinder, the reserve hydraulic cylinder, and the brake cylinder. The flow system has first and second flow paths in communication with the lower hydraulic compartment and the reserve hydraulic cylinder. The first flow path is in communication with lower hydraulic compartment and the reserve hydraulic cylinder via the brake cylinder. The second flow path bypasses the brake hydraulic cylinder.
Claims19
A prosthetic knee comprising:
- a controller;
- and
- a hydraulic unit pivotally connected to the controller, the hydraulic unit including:
- a hydraulic cylinder having a lower hydraulic compartment;
- a brake hydraulic cylinder;
- and
- a flow system fluidly connecting the hydraulic cylinder and the brake hydraulic cylinder;
- wherein the brake hydraulic cylinder includes a block valve in a first component of the brake hydraulic cylinder and a brake-initiating valve in a second component of the brake hydraulic cylinder;
- further comprising a shell pivotally connected to the hydraulic unit and arranged to press against the brake hydraulic cylinder, the brake-initiating valve having a portion extending outwardly from the second component and located along an inside surface of the shell for contact therewith.
A prosthetic knee comprising:
- a controller;
- a hydraulic unit pivotally connected to the controller, the hydraulic unit including:
- a hydraulic cylinder having upper and lower hydraulic compartments;
- a brake hydraulic cylinder having first and second compartments;
- and
- a flow system fluidly connecting the hydraulic cylinder and the brake cylinder;
- and
- a shell pivotally connected to the hydraulic unit and arranged to press against the brake hydraulic cylinder;
- wherein the brake hydraulic cylinder includes a block valve in a first component of the brake hydraulic cylinder and a brake-initiating valve in a second component of the brake hydraulic cylinder, each of the block valve and the brake-initiating valve biased directly against an adjusting valve located between the first and second compartments;
- wherein the shell has an adjusting screw pivotally connected to the brake-initiating valve to urge the brake initiating valve against the adjusting valve.
A prosthetic knee comprising:
- a controller;
- and
- a hydraulic unit pivotally connected to the controller, the hydraulic unit including:
- a hydraulic cylinder having a lower hydraulic compartment;
- a brake hydraulic cylinder;
- and
- a flow system fluidly connecting the hydraulic cylinder and the brake hydraulic cylinder;
- wherein the brake hydraulic cylinder includes a block valve in a first component of the brake hydraulic cylinder and a brake-initiating valve in a second component of the brake hydraulic cylinder;
- wherein each of the block valve and the brake-initiating valve are biased directly against an adjusting valve having first and second guiding surfaces, the first guiding surface matches a contact end of the block valve, and the second guiding surface matches a contact end of the brake-initiating valve.
Dependencies are inferred from the claim text.