Paul Andre Vichot

US Patent:

20040230114, Nov 18, 2004

Filed:

Mar 18, 2004

Appl. No.:

10/803254

Inventors:

Guy Clatterbaugh - Columbia MD, US
Paul Vichot - Ellicott City MD, US
James Palmer - Ellicott City MD, US
Henry Halperin - Baltimore MD, US

International Classification:

A61B006/00
A61M025/00

US Classification:

600/435000

Abstract:

A method and structure for a radio frequency receiver coil adapted to be extended from a catheter. This coil comprises a flexible printed wiring board that has a first end and a second end extending from the opening in the catheter and a connection external to the catheter joining the first end to the second end to form a loop. The flexible printed wiring board also includes shielding circuitry (e.g., a Faraday shield) on the flexible printed wiring board. The first end is more flexible than the second end and the relative flexibility of the first end with respect to the second end causes the first end to take the shape of a round arc when extended from the catheter. In addition, insulator sections on the flexible printed wiring board define the shape of the loop. Independently moveable control rods are connected to the first end and the second end, to allow the first end to be extended further out of the opening than the second end (to form the loop).

US Patent:

20070051193, Mar 8, 2007

Filed:

Sep 8, 2005

Appl. No.:

11/222507

Inventors:

John Olenick - Buffalo NY, US
Timothy Curry - Buffalo NY, US
Robert Bourdelaise - Gambrills MD, US
Eli Richards - Catonsville MD, US
Paul Vichot - Eldersburg MD, US
Barry Grabow - Laurel MD, US
Samuel Wilderson - Simpsonville MD, US

International Classification:

G01N 33/00

US Classification:

073866000

Abstract:

A high-temperature seal having in-situ integrity monitoring capability includes a quantity of dielectric material sealing an interface between adjacent structures and an electrical transmission line embedded within the dielectric material. A signal injection port is provided for exciting the transmission line with an excitation signal. One or more sample ports are provided for sampling the transmission line to obtain signal samples resulting from the excitation signal. The sample port(s) are adapted for connection to a signal analyzer adapted to analyze the signal samples for indications of seal integrity problems. Using a technique such as time domain reflectometry or frequency response analysis, the transmission line can be monitored for changes in characteristic impedance due to changes in seal dielectric constant and/or disruption of the transmission line. Such evaluation provides useful information for making determinations about seal integrity in a manner that permits safe seal operation and minimization of resultant stress modes.

US Patent:

20130021220, Jan 24, 2013

Filed:

Jul 17, 2012

Appl. No.:

13/550675

Inventors:

Chun-Huei Bair - Silver Spring MD, US
Paul A. Vichot - Eldersburg MD, US

Assignee:

The Johns Hopkins University - Baltimore MD

International Classification:

H01Q 1/50

US Classification:

343861

Abstract:

A system for use with a transmitter and an antenna includes a radio frequency power detection portion, a tunable matching network, and a phase lock loop. The tunable matching network has a modifiable impedance to account for impedance mismatch between the transmitter and the antenna. The phase lock loop tunes the tunable matching network to modify the modifiable impedance.

Address:

1022 Stonebrook Rd UNIT A, Sykesville, MD 21784

Phone:

410 795-1108

VIN:

JTEES43A082043034

Make:

TOYOTA

Model:

HIGHLANDER SPORT

Year:

2008