Thomas A Chilipka

US Patent:

8564177, Oct 22, 2013

Filed:

Aug 24, 2012

Appl. No.:

13/593565

Inventors:

David Vilkomerson - Princeton NJ, US
Thomas A Chilipka - East Windsor NJ, US

Assignee:

DVX, LLC - Princeton NJ

International Classification:

B06B 1/06

US Classification:

310334

Abstract:

Matching layers improve the performance of ultrasonic transducers. Such layers have traditionally required significant effort and expense to be added to ultrasonic transducers. The present invention discloses a method of producing ultrasonic transducers with a matching layer, specifically for ultrasonic transducers utilizing piezopolymer transducer materials. Rather than the conventional method of forming the piezopolymer on a substrate and then attaching a matching layer through which the transducer emits its ultrasound energy, we teach depositing the piezopolymer on a substrate that also serves as a matching layer through which the ultrasound is emitted. Methods of how to select materials and modify their ultrasonic characteristics are also discussed.

US Patent:

20080139940, Jun 12, 2008

Filed:

Nov 20, 2007

Appl. No.:

11/986164

Inventors:

David Vilkomerson - Princeton NJ, US
Thomas A. Chilipka - East Windsor NJ, US
John W. Bogan - East Windsor NJ, US

International Classification:

A61B 8/06

US Classification:

600454

Abstract:

Transducers to measure fluid flow using Doppler ultrasound that are suitable for integrating into or connecting to intravascular devices are disclosed. These transducers meet the requirement for long, thin, flexible transducers, and consist of one or more diffraction-grating transducers, with or without non-diffraction-grating transducers. An exemplary configuration of the transducers utilizes the diffraction caused by narrow transducers to produce beam overlap for Doppler detection of moving blood, and stripline transmission lines are used to bring energy to and receive energy from the transducers and may carry the disclosed transducer configurations as well as carry signals into and out of the blood vessels.

US Patent:

20150044386, Feb 12, 2015

Filed:

Sep 17, 2013

Appl. No.:

14/028578

Inventors:

- Princeton NJ, US
Thomas Chilipka - East Windsor NJ, US

Assignee:

DVX, LLC - Princeton NJ

International Classification:

H01L 41/314
H01L 41/317
H01L 41/297
C23C 28/00
B05D 1/04
B05D 1/18
B05D 1/00
H01L 41/316
H01L 41/45

US Classification:

427485, 427100, 427 58, 205122

Abstract:

Matching layers improve the performance of ultrasonic transducers. Such layers have traditionally required significant effort and expense to be added to ultrasonic transducers. The present invention discloses a method of producing ultrasonic transducers with a matching layer, specifically for ultrasonic transducers utilizing piezopolymer transducer materials. Rather than the conventional method of forming the piezopolymer on a substrate and then attaching a matching layer through which the transducer emits its ultrasound energy, we teach depositing the piezopolymer on a substrate that also serves as a matching layer through which the ultrasound is emitted. We also teach depositing an additional shield layer for reducing electromagnetic interference. Methods of how to select materials and modify their ultrasonic characteristics are also discussed.

US Patent:

20050070799, Mar 31, 2005

Filed:

Sep 29, 2004

Appl. No.:

10/953276

Inventors:

David Vilkomerson - Princeton NJ, US
Thomas Chilipka - E. Windsor NJ, US

International Classification:

A61B008/06

US Classification:

600454000

Abstract:

A system for monitoring blood flow confined by at least one vessel wall, the system including: at least one implantable diffraction-grating transducer being embedded within or adjacent to a vessel wall, the diffraction-grating transducer being suitable for emitting ultrasound into or receiving Doppler shifted ultrasound from the blood flow; and, a source for pulse-exciting the implantable diffraction grating; wherein, the Doppler shift is indicative of the blood flow.