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US 12,004,972 B2Granted
Pump system
AssigneeOssur Iceland Ehf
InventorsDavid Sandahl, Dana Stewart Marlin, Hafsteinn Jonasson
Life of this patent
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Abstract
A prosthetic system includes first and second parts rotatable relative to one another about a joint. The first and second parts are adapted to form at least part of a weight bearing connection between a prosthetic foot and a socket. A pump system includes a pump mechanism operatively connected to the first and second parts. Rotation of the first part and/or the second part about the joint moves the pump mechanism between an original configuration in which the volume of a fluid chamber defined by the pump mechanism is zero or near-zero, and an expanded configuration in which the volume of the fluid chamber is increased.
Claims19
A prosthetic system comprising:
- first and second parts rotatable relative to one another about a prosthetic knee, the first and second parts adapted to form at least part of a weight-bearing connection between a prosthetic foot and a socket;
- and
- a pump system including:
- a pump mechanism operatively connected to the first and second parts such that rotation between the first and second parts about a joint of the prosthetic knee moves the pump mechanism between a predetermined configuration in which a volume of a fluid chamber defined by the pump mechanism is zero or near-zero and an expanded configuration in which the volume of the fluid chamber is increased;
- and
- a movable member including a first end portion connected to the pump mechanism and a second end portion connected to at least one of the first and second parts, the movable member pivotally connecting to a housing;
- wherein rotation between the first and second parts rotates the movable member relative to the pump mechanism;
- wherein the first part comprises a rotatable part of the prosthetic knee and the second end portion is arranged to engage the rotatable part of the prosthetic knee selectively.
5 more elements
A prosthetic system comprising:
- a prosthetic socket
- a prosthetic knee having a proximal part, a distal part, and a link connecting the proximal part to the distal part;
- a pump system including a pump mechanism connected to the prosthetic socket for generating negative pressure in the prosthetic socket, and a movable member, the pump mechanism includes a housing, a membrane, and at least one valve assembly arranged to control movement of fluid into and from the pump mechanism, the housing comprises a base plate attached to an anterior portion of the distal part;
- wherein the membrane is arranged to deform to move between an original configuration in which a volume of a fluid chamber defined between the membrane and the housing is zero or near-zero and an expanded configuration in which the volume of the fluid chamber is increased;
- wherein the membrane is attached to the movable member via a connector, and an outer radial edge portion of the membrane is attached to the housing.
2 more elements
A prosthetic system comprising:
- a prosthetic socket
- a prosthetic knee having a proximal part, a distal part, and a link connecting the proximal part to the distal part;
- a pump system including a pump mechanism connected to the prosthetic socket for generating negative pressure in the prosthetic socket, and a movable member, the pump mechanism includes a housing, a membrane formed from an elastomeric material, and at least one valve assembly arranged to control movement of fluid into and from the pump mechanism, the housing comprises a base plate attached to an anterior portion of the distal part;
- wherein the membrane is arranged to deform to move between an original configuration in which the volume of a fluid chamber defined between the membrane and the housing is zero or near-zero and an expanded configuration in which a volume of the fluid chamber is increased;
- wherein the membrane is attached to the movable member via a connector and an outer radial edge portion of the membrane is attached to the housing;
- wherein the movable member is located on the anterior portion of the knee and spans the proximal part and the distal part;
- wherein the movable member defines an opening for receiving the connector, wherein the movable member includes a distal end portion arranged to engage the distal part of the knee and a proximal end portion arranged to engage the distal part of the knee, the distal end portion of the movable member being pivotally connected to the knee at or near a distal region thereof;
- wherein the link includes a load-dependent brake system arranged to selectively prevent rotation of the proximal part relative to the distal part when the knee is loaded by a user in stance, and when the load on the knee is removed or reduced, the load-dependent brake system is releasable, and the knee is arranged to swing, or the proximal part is rotatable relative to the distal part about a joint defined by the link.
5 more elements
Dependencies are inferred from the claim text.