Mark Callis Sanders

US Patent:

6539940, Apr 1, 2003

Filed:

Sep 26, 2001

Appl. No.:

09/966547

Inventors:

Ronald J. Zdrojkowski - Pittsburgh PA
Mark H. Sanders - Wexford PA
Mark Estes - Sylmar CA

Assignee:

Respironics, Inc. - Murrysville PA

International Classification:

A61M 1600

US Classification:

12820423, 12820418

Abstract:

An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apena through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient, and improved methods and apparatus for triggering and for leak management in such systems.

US Patent:

6948497, Sep 27, 2005

Filed:

Mar 3, 2003

Appl. No.:

10/378369

Inventors:

Ronald J. Zdrojkowski - Pittsburgh PA, US
Mark H. Sanders - Wexford PA, US
Mark Estes - Sylmar CA, US

Assignee:

RIC Investments, Inc. - Murrysville PA

International Classification:

A61M016/00

US Classification:

12820418, 12820421, 12820423

Abstract:

An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient, and improved methods and apparatus for triggering and for leak management in such systems.

US Patent:

7100607, Sep 5, 2006

Filed:

May 27, 2005

Appl. No.:

11/139235

Inventors:

Ronald J. Zdrojkowski - Murrysville PA, US
Mark Sanders - Wexford PA, US
Mark Estes - Northridge CA, US

Assignee:

RIC Investments, Inc. - Wilmington DE

International Classification:

A61M 16/00

US Classification:

12820418, 12820423, 12820421

Abstract:

An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient, and improved methods and apparatus for triggering and for leak management in such systems.

US Patent:

7740591, Jun 22, 2010

Filed:

Nov 29, 2004

Appl. No.:

10/999186

Inventors:

Eric W. Starr - Allison Park PA, US
James A. Scull - Durham NC, US
Eric Ayers - Aliquippa PA, US
Bernie F. Hete - Kittanning PA, US
Donald S. Wilczek - Verona PA, US
Mark H. Sanders - Wexford PA, US

Assignee:

Ric Investments, LLC - Wilmington DE

International Classification:

A61B 5/08

US Classification:

600534, 600529

Abstract:

A method and apparatus for monitoring changes in the intra-thoracic pressure of a patient due to the patient's respiratory activity or volumetric changes in the extra-thoracic arterial circulatory system due to cardiac function based on the changes in pressure in the patient's extra-thoracic arterial circulatory system as measured by a plethysmography sensor, such as an photoplethysmograph. A frequency spectrum is generated for the plethysmograph signal and the frequencies of interest is isolated from the frequency spectrum by setting appropriate cutoff frequencies for the frequency spectrum. This isolated frequency is used to filter the plethysmograph signal to provide a signal indicative of the patient's respiratory activity or cardiac function. For corrections for breathing frequency roll-off and deviations of the I:E ratio from 1:1.

US Patent:

8343057, Jan 1, 2013

Filed:

May 6, 2010

Appl. No.:

12/774891

Inventors:

Eric W. Starr - Alisson Park PA, US
Eric Ayers - Aliquippa PA, US
Bernie F. Hete - Kittanning PA, US
Donald S. Wilczek - Verona PA, US
James A. Scull - Durham NC, US
Mark H. Sanders - Wexford PA, US

Assignee:

RIC Investments, LLC - Wilmington DE

International Classification:

A61B 5/02

US Classification:

600483, 600481, 600485, 600529

Abstract:

A method and apparatus for monitoring changes in the intra-thoracic pressure of a patient due to the patient's respiratory activity or volumetric changes in the extra-thoracic arterial circulatory system due to cardiac function based on the changes in pressure in the patient's extra-thoracic arterial circulatory system as measured by a plethysmography sensor, such as an photoplethysmograph. A frequency spectrum is generated for the plethysmograph signal and the frequencies of interest is isolated from the frequency spectrum by setting appropriate cutoff frequencies for the frequency spectrum. This isolated frequency is used to filter the plethysmograph signal to provide a signal indicative of the patient's respiratory activity or cardiac function.

US Patent:

20070044796, Mar 1, 2007

Filed:

Jul 13, 2006

Appl. No.:

11/485819

Inventors:

Ronald Zdrojkowski - Murrysville PA, US
Mark Estes - Northridge CA, US
Mark Sanders - Wexford PA, US

Assignee:

RIC Investments, Inc. - Wilmington DE

International Classification:

A61M 16/00

US Classification:

128204180

Abstract:

An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient, and improved methods and apparatus for triggering and for leak management in such systems.

US Patent:

51488027, Sep 22, 1992

Filed:

Sep 22, 1989

Appl. No.:

7/411012

Inventors:

Mark H. Sanders - Pittsburgh PA
Ronald J. Zdrojkowski - Pittsburgh PA

Assignee:

Respironics Inc. - Murrysville PA

International Classification:

A61M 1600

US Classification:

12820418

Abstract:

An improved methodology and apparatus for the treatment of sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient.

US Patent:

54331935, Jul 18, 1995

Filed:

Sep 18, 1992

Appl. No.:

7/947156

Inventors:

Mark H. Sanders - Wexford PA
Ronald J. Zdrojkowski - Pittsburgh PA

Assignee:

Respironics Inc. - Murrysville PA

International Classification:

A61M 1600

US Classification:

12820418

Abstract:

An improved methodology and apparatus for delivery of breathing gas such as fop the treatment of sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient.