Harry D Rowland

US Patent:

8154389, Apr 10, 2012

Filed:

Apr 7, 2009

Appl. No.:

12/419326

Inventors:

Harry D. Rowland - East Peoria IL, US
Roger Dwight Watkins - Dunlap IL, US
Balamurugan Sundaram - Peoria IL, US

Assignee:

Endotronix, Inc. - Peoria IL

International Classification:

H04Q 5/22

US Classification:

340 132, 340 101, 340 103, 340 104, 340 1325

Abstract:

A wireless sensor reader is provided to interface with a wireless sensor. The wireless sensor reader transmits an excitation pulse to cause the wireless sensor to generate a ring signal. The wireless sensor reader receives and amplifies the ring signal and sends the signal to a phase-locked loop. A voltage-controlled oscillator in the phase-locked loop locks onto the ring signal frequency and generates a count signal at a frequency related to the ring signal frequency. The voltage-controlled oscillator is placed into a hold mode where the control voltage is maintained constant to allow the count signal frequency to be determined.

US Patent:

8432265, Apr 30, 2013

Filed:

Mar 19, 2012

Appl. No.:

13/423693

Inventors:

Harry D. Rowland - East Peoria IL, US
Roger Dwight Watkins - Dunlap IL, US
Balamurugan Sundaram - Peoria IL, US

Assignee:

Endotronix, Inc. - East Peoria IL

International Classification:

H04Q 5/22

US Classification:

340 132, 340 101, 340 103, 340 104, 340 1325

Abstract:

A wireless sensor reader is provided to interface with a wireless sensor. The wireless sensor reader transmits an excitation pulse to cause the wireless sensor to generate a ring signal. The wireless sensor reader receives and amplifies the ring signal and sends the signal to a phase-locked loop. A voltage-controlled oscillator in the phase-locked loop locks onto the ring signal frequency and generates a count signal at a frequency related to the ring signal frequency. The voltage-controlled oscillator is placed into a hold mode where the control voltage is maintained constant to allow the count signal frequency to be determined.

US Patent:

8493187, Jul 23, 2013

Filed:

Mar 19, 2010

Appl. No.:

12/727306

Inventors:

Harry D. Rowland - East Peoria IL, US
Roger Dwight Walking - Dunlap IL, US
Balamurugan Sundaram - Peoria IL, US
Bryan Paul - Peoria IL, US
In Soo Ahn - Peoria IL, US
Michael Nagy - Lawrenceville GA, US

Assignee:

Endotronix, Inc. - East Peoria IL

International Classification:

H04Q 5/22

US Classification:

340 1325, 340 101, 340 103, 340 104

Abstract:

A wireless sensor reader is provided to interface with a wireless sensor. The wireless sensor reader transmits a narrowband, fixed frequency excitation pulse to cause the wireless sensor to generate a ring signal. The ring signal corresponds to the value of the physical parameter being sensed. The wireless sensor reader receives and amplifies the ring signal and sends the signal to a phase-locked loop. A voltage-controlled oscillator in the phase-locked loop locks onto the ring signal frequency and generates a count signal at a frequency related to the ring signal frequency. The voltage-controlled oscillator is placed into a hold mode where the control voltage is maintained constant to allow the count signal frequency to be determined. The low power, simple circuitry required to generate the excitation pulse allows the reader to be a small, battery operated unit. Alternative methods of frequency determination are also disclosed.

US Patent:

8570186, Oct 29, 2013

Filed:

Apr 25, 2012

Appl. No.:

13/455776

Inventors:

Michael Nagy - Lawrenceville GA, US
Harry D. Rowland - Plainfield IL, US
Roger Dwight Watkins - Dunlap IL, US
Balamurugan Sundaram - Dunlap IL, US

Assignee:

Endotronix, Inc. - East Peoria IL

International Classification:

H04Q 5/22

US Classification:

34087002, 340 101, 340 103, 340 104, 340 132, 340 1325

Abstract:

A wireless sensor reader is provided to interface with a wireless sensor. The wireless sensor reader transmits an excitation pulse to cause the wireless sensor to generate a ring signal. The wireless sensor reader receives and amplifies the ring signal and sends the signal to a phase-locked loop. A voltage-controlled oscillator in the phase-locked loop locks onto the ring signal frequency and generates a count signal at a frequency related to the ring signal frequency. The voltage-controlled oscillator is placed into a hold mode where the control voltage is maintained constant to allow the count signal frequency to be determined. The reader uses an ambient reading or other information to select a subset of the possible ring signal frequencies, and tunes or adjusts its circuits and algorithms to focus on that subset.

US Patent:

20050170670, Aug 4, 2005

Filed:

Nov 17, 2004

Appl. No.:

10/990940

Inventors:

William King - Atlanta GA, US
Clifford Henderson - Douglasville GA, US
Harry Rowland - Atlanta GA, US
Celesta White - Katy TX, US

International Classification:

H01L021/311

US Classification:

438800000

Abstract:

Methods and compositions for patterning sacrificial materials are provided.

US Patent:

20080033527, Feb 7, 2008

Filed:

Jul 3, 2007

Appl. No.:

11/773295

Inventors:

Anthony Nunez - Beachwood OH, US
Harry Rowland - Peoria IL, US

International Classification:

A61F 2/06

US Classification:

623001130, 623001150

Abstract:

A prosthetic implant includes a graft having a wall defining a passage. A plurality of sensors are integrated with the graft. The sensors are configured to detect at least one structural characteristic of the graft. A power source is operatively coupled to the sensors and configured to provide power to the sensors.

US Patent:

20080281210, Nov 13, 2008

Filed:

Jan 25, 2008

Appl. No.:

12/011501

Inventors:

Anthony I. Nunez - Beachwood OH, US
Harry D. Rowland - East Peoria IL, US

International Classification:

A61B 5/0215

US Classification:

600486

Abstract:

An implantable medical device including a tubular housing defining a passage between a proximal end and a distal end of the housing. The passage providing fluid communication through the housing. A sensing unit is positioned within the passage and coupled to the housing. The sensing unit is configured to sense at least one of a physical, chemical, and physiological parameter within the passage.

US Patent:

20080281212, Nov 13, 2008

Filed:

Mar 14, 2008

Appl. No.:

12/075858

Inventors:

Anthony I. Nunez - Beachwood OH, US
Harry D. Rowland - East Peoria IL, US

International Classification:

A61B 5/02

US Classification:

600508

Abstract:

An implantable medical device includes a first sensor array movable between a collapsed configuration and a deployed configuration. The first sensor array includes a first main portion and at least one rigid sensor movably coupled to the first main portion. A coupler is operatively coupled to the first sensor array and configured to couple the implantable medical device with respect to a heart chamber.