Ellen S Lee

US Patent:

8142369, Mar 27, 2012

Filed:

Jul 27, 2009

Appl. No.:

12/509934

Inventors:

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

Assignee:

University of Washington - Seattle WA

International Classification:

A61B 5/1477

US Classification:

600587, 607148, 600382, 600456

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.

US Patent:

8391367, Mar 5, 2013

Filed:

Dec 23, 2009

Appl. No.:

12/645740

Inventors:

Leslie D. Kohn - Saratoga CA, US
Ellen M. Lee - Saratoga CA, US

Assignee:

Ambarella, Inc. - Santa Clara CA

International Classification:

H04N 11/02

US Classification:

3752402, 37524023, 37524025, 37524026

Abstract:

An apparatus comprising a transform circuit, a first coder circuit, a second coder circuit, and a memory circuit. The transform circuit may be configured to generate (i) one or more first coefficients in response to a sample signal when in a first mode and (ii) the sample signal in response to the first coefficients when in a second mode. The first coder circuit may be configured to generate (i) a first bitstream signal in response to one or more second coefficients when in the first mode and (ii) the second coefficients in response to the first bitstream signal when in the second mode. The second coder circuit may be configured to generate (i) a second bitstream signal in response to one or more third coefficients when in the first mode and (ii) the third coefficients in response to the second bitstream signal when in the second mode. The memory circuit may be configured to store the first coefficients, the second coefficients, and the third coefficients. The memory may be configured to allow the transform circuit, the first coder circuit, and the second coder circuit to operate independently.

US Patent:

8423167, Apr 16, 2013

Filed:

Jul 22, 2009

Appl. No.:

12/507560

Inventors:

Joan E. Sanders - Sammamish WA, US
Michael R. Severance - Seattle WA, US
Timothy R. Myers - Seattle WA, US
George Turkiyyah - Seattle WA, US
Elizabeth A. Sorenson - Ramona CA, US
Ellen L. Lee - Corvallis OR, US

Assignee:

University of Washington - Seattle WA

International Classification:

G06F 17/50
G06F 19/00

US Classification:

700 98, 700118, 700161, 700195, 623901, 703 1

Abstract:

For use in connection with evaluating prosthetic sockets (and other objects) designed and fabricated with computer aided design and manufacturing software, the shape of a socket is accurately scanned and digitized. The scanned data are then compared to either an electronic shape data file, or to the shape of another socket, a positive model of a residual limb (or socket), or a residual limb. Differences detected during the comparison can then be applied to revise the design or fabrication of the socket, to more accurately achieve a desired shape that properly fits the residual limb of a patient and can be used to solve the inverse problem by correcting for observed errors of a specific fabricator before a socket is produced. The digitizing process is implemented using a stylus ball that contacts a surface of the socket to produce data indicating the three-dimensional shape of the socket.

US Patent:

20120143077, Jun 7, 2012

Filed:

Jan 27, 2012

Appl. No.:

13/360525

Inventors:

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

Assignee:

UNIVERSITY OF WASHINGTON - Seattle WA

International Classification:

A61B 5/053

US Classification:

600547

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.

US Patent:

20220297381, Sep 22, 2022

Filed:

Jun 6, 2022

Appl. No.:

17/833185

Inventors:

- Dearborn MI, US
Siddharthan Selvasekar - Livermore CA, US
Ching-Hung Chuang - Northville MI, US
Ellen Lee - Ann Arbor MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

B29C 64/386
B33Y 80/00
B33Y 10/00
B33Y 50/00
B29D 24/00

Abstract:

A part formed by an additive manufacturing process consist of regions of voids, regions of solid material, and regions of non-uniform lattice cells, where each lattice cell includes bars. The regions are spatially distributed throughout the part as a function of load conditions such that the solid material is distributed in regions of first load paths and the non-uniform lattice cells are distributed in regions of second load paths lower in magnitude than the first load paths. Diameters of each bar of a non-uniform lattice cell are sized as a function of at least one of a resolution unit of the additive manufacturing process and part performance requirements. The diameters of the bars of the non-uniform lattice cells are classified into clusters with an average diameter size being assigned to all non-uniform lattice cells in the same cluster.

US Patent:

20190152150, May 23, 2019

Filed:

Nov 20, 2017

Appl. No.:

15/817330

Inventors:

- Dearborn MI, US
Siddharthan Selvasekar - Livermore CA, US
Ching-Hung Chuang - Northville MI, US
Ellen Lee - Ann Arbor MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

B29C 64/386
B33Y 10/00
B33Y 80/00

Abstract:

A part formed by an additive manufacturing process is provided, which consists of three (3) regions: regions of voids with no material; regions of solid material; and regions of non-uniform lattice cells. The regions are spatially distributed throughout the part as a function of load conditions such that the solid material is distributed in regions of first load paths and the lattice cells are distributed in regions of second load paths lower in magnitude than the first load paths. The lattice cells are tailored to the additive manufacturing process constraints and machine resolution.