Prosthetic liner
AssigneeOssur Iceland Ehf
InventorChristof Werner Björn KURTH
Life of this patent
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Abstract
A prosthetic liner includes a flexible elongate, generally conical body portion formed from an elastomeric material. The body portion defines an inner surface, an outer surface forming a liner profile between a distal end and a proximal end, and an axis extending between the distal and proximal ends. At least one seal element extends circumferentially about the axis and protrudes radially outward a distance from the liner profile. The at least one seal element has a seal height defined between the liner profile and a radially outward end of the at least one seal element. The seal height varies circumferentially about the axis between a first seal height and a second seal height.
Claims20
A prosthetic liner adapted to provide an interface between a residual limb and a prosthetic socket, the prosthetic liner comprising:
- a flexible elongate, generally conical liner body portion formed from an elastomeric material, the body portion defining an inner surface, an outer surface forming a liner profile between a closed distal end and an open proximal end, and an axis extending between the distal end and proximal end;
- and
- at least one seal element extending circumferentially about the axis and protruding radially outward a distance from the liner profile, the at least one seal element having a seal height defined between the liner profile and a radially outward end of the at least one seal element, the seal height varying circumferentially around the axis between a first seal height at a first circumferential position or a first circumferential region of the at least one seal element and a second seal height at a second circumferential position or a second circumferential region of the at least one seal element.
A prosthesis system comprising:
- a prosthetic socket adapted to a shape of a residual limb;
- and
- a prosthetic liner adapted to provide an interface between the residual limb and the prosthetic socket, the liner including:
- a flexible elongate, generally conical body portion formed from an elastomeric material, the body portion defining an inner surface, an outer surface forming a liner profile between a distal end area and a proximal end area, and an axis extending between the distal end area and the proximal end area;
- and
- at least one seal element extending circumferentially about the axis and protruding radially outward from the liner profile, the at least one seal element arranged to bridge a seal between the prosthetic socket and the body portion, and having a seal height defined between the liner profile and a radially outward end of the at least one seal element, the seal height varying circumferentially around the axis between a first seal height and a second seal height.
A method of positively securing a residual limb within a prosthetic socket, the method comprising:
- donning a prosthetic liner on a distal end of the residual limb, the prosthetic liner including:
- a flexible elongate, generally conical body portion formed from an elastomeric material, the body portion defining an inner surface, an outer surface forming a liner profile between a distal end area and a proximal end area, and an axis extending between the distal end area and the proximal end area;
- and
- at least one seal element extending circumferentially about the axis and protruding radially outward a distance from the liner profile, the at least one seal element having a seal height defined between the liner profile and a radially outward end of the at least one seal element;
- and
- inserting the prosthetic liner and the distal end of the residual limb into a prosthetic socket such that the at least one seal element engages an interior wall of the prosthetic socket and deforms to bridge a substantially air-tight seal between the prosthetic socket and the body portion, wherein the seal height of the at least one seal element varies circumferentially about the axis between a first seal height at a first circumferential position and a second seal height at a second circumferential position.
Dependencies are inferred from the claim text.