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US 11,395,748 B2Granted
Devices, systems, and methods for socket fit management
AssigneeThe United States Government as represented by the Department of Veterans Affairs
InventorsJohn Ferguson, Gregory Owen Voss, Stuart Richard Fairhurst, Andrew Hansen
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Abstract
Disclosed herein are devices, systems, and methods for measuring socket fit in lower limb prostheses and detecting motion of a residual limb relative to a prosthetic socket. Also disclosed herein are methods for developing a socket-fit detection system for sock management that can be applied to adjustable socket systems.
Claims24
A sensor assembly comprising:
- a rigid body defining an opening extending through a thickness of the rigid body;
- a pressure sensor positioned in fluid communication with the opening of the rigid body;
- a sealing element that forms a seal between portions of the pressure sensor and portions of the rigid body that define the opening;
- and
- a membrane positioned in overlying relation to the rigid body, wherein the membrane is sealed to the rigid body,
- wherein the rigid body, a lower surface of the membrane, the pressure sensor, and the sealing element cooperate to define at least a portion of a sealed chamber that contains a fluid,
- wherein the membrane has an upper surface that is configured for contact with a distal portion of a residual limb of a patient,
- wherein the sensor assembly is configured for complementary receipt within a distal portion of a prosthetic socket, and
- wherein the pressure sensor is configured to produce an output indicative of changes in pressure within the sealed chamber in response to deformation of the membrane by the distal portion of the residual limb of the patient.
6 more elements
A sensor assembly comprising:
- a rigid body defining an opening extending through a thickness of the rigid body;
- a pressure sensor positioned in fluid communication with the opening of the rigid body;
- a membrane positioned in overlying relation to the rigid body;
- and
- a lower body that supports the pressure sensor in an operative position and is secured to the rigid body,
- wherein the rigid body, a lower surface of the membrane, and the pressure sensor cooperate to define at least a portion of a chamber configured to receive a fluid,
- wherein the membrane has an upper surface that is configured for contact with a distal portion of a residual limb of a patient,
- wherein the sensor assembly is configured for complementary receipt within a distal portion of a prosthetic socket, and
- wherein the pressure sensor is configured to produce an output indicative of changes in pressure within the sealed chamber in response to deformation of the membrane by the distal portion of the residual limb of the patient,
- wherein the membrane is secured to the rigid body, wherein the rigid body has a peripheral edge, and wherein the membrane has a peripheral edge portion that covers at least a portion of the peripheral edge of the rigid body, and wherein the rigid body has an upper body portion and a lower body portion that is inwardly recessed from, and that has a decreased diameter relative to, the upper body portion, and wherein the upper body portion comprises a circumferential flange that defines the peripheral edge of the rigid body.
7 more elements
Dependencies are inferred from the claim text.