The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2015
Filed:
Jan. 27, 2012
Joan E. Sanders, Sammamish, WA (US);
Timothy R. Myers, Seattle, WA (US);
Daniel S. Harrison, Kirkland, WA (US);
Katheryn J. Allyn, Seattle, WA (US);
Ellen L. Lee, Corvallis, OR (US);
Daniel C. Abrahamson, Seattle, WA (US);
Kirk Beach, Seattle, WA (US);
Santosh Zachariah, Seattle, WA (US);
Joan E. Sanders, Sammamish, WA (US);
Timothy R. Myers, Seattle, WA (US);
Daniel S. Harrison, Kirkland, WA (US);
Katheryn J. Allyn, Seattle, WA (US);
Ellen L. Lee, Corvallis, OR (US);
Daniel C. Abrahamson, Seattle, WA (US);
Kirk Beach, Seattle, WA (US);
Santosh Zachariah, Seattle, WA (US);
University of Washington, Seattle, WA (US);
Abstract
Changes in the volume of residual limbs on which prosthetic sockets are worn can be measured based on bioimpedance measurements along one or more segments of the limb. A current at an appropriate frequency (e.g., in the range from 1 kHz to 1 MHz) is injected at two current electrodes that contact the skin of the residual limb. The voltage at the voltage electrodes disposed between the current electrodes is measured and using an appropriate model, the change in the segmented volume of the limb can be determined during periods of different activity and at different times during the day. This information can be used for assessing the fit of the socket and can also provide a feedback signal for automatically controlling volume management devices, to ensure a more comfortable fit when the volume of the limb is changing.