Keith D Ignotz

US Patent:

D488230, Apr 6, 2004

Filed:

Apr 9, 2003

Appl. No.:

29/179283

Inventors:

Keith Ignotz - Duluth GA
Kevin Lilly - Marietta GA

Assignee:

Sterling Medivations, Inc. - Norcross GA

International Classification:

2404

US Classification:

D24189

US Patent:

6882873, Apr 19, 2005

Filed:

Nov 26, 2002

Appl. No.:

10/303832

Inventors:

Mark A. Samuels - Norcross GA, US
Keith D. Ignotz - Duluth GA, US
Gregory J. Newman - Atlanta GA, US
Jonathan A. Eppstein - Atlanta GA, US
Fan Xu - Lawrenceville GA, US

Assignee:

Respironics, Inc. - Murrysville PA

International Classification:

A61B005/00

US Classification:

600315, 600322

Abstract:

A system and method embodying the invention can be used to detect a characteristic or condition of a patient. A method embodying the invention may include the steps of illuminating a portion of a skin of the patient with light, detecting a frequency spectrum of light scattered from the skin, determining, from first and second portions of the spectrum, a first parameter indicative of a blood content of the skin and a second parameter indicative of a melanin content of the skin, determining, from a third portion of the spectrum, a third parameter indicative of an uncorrected bilirubin concentration, and calculating a corrected bilirubin concentration based on the first, second and third parameters.

US Patent:

8644912, Feb 4, 2014

Filed:

Aug 22, 2011

Appl. No.:

13/214638

Inventors:

Shabbir Bambot - Suwanee GA, US
Mark L. Faupel - Alpharetta GA, US
Anant Agrawal - Atlanta GA, US
Keith D. Ignotz - Duluth GA, US
Andrew Fordham - Sugar Hill GA, US

Assignee:

SpectRx, Inc. - Norcross GA

International Classification:

A61B 6/00

US Classification:

600476, 600407, 600473, 600478

Abstract:

An apparatus to interrogate, receive, and analyze full emission spectra for at least one fluorescence excitation wavelength and for at least one reflectance measurement to determine tissue characteristics. The apparatus includes a base unit having illumination, detection and control sub-units, the illumination sub-unit providing illumination optical energy for illuminating a target tissue and the detection sub-unit detecting tissue characteristics of a target tissue, a separate tissue interface unit, and a pathway coupling the base unit and the tissue interface unit. The system and apparatus may also include a tube for maintaining the distance between the tissue and units and for surrounding the tissue to prevent patient movement from being transmitted to the tissue.

US Patent:

20020045912, Apr 18, 2002

Filed:

Jul 25, 2001

Appl. No.:

09/916123

Inventors:

Keith Ignotz - Duluth GA, US

International Classification:

A61B017/32

US Classification:

606/167000

Abstract:

A fluid jet blood sampling system and method for obtaining a blood sample from a patient, utilizes a short duration fluid jet from a disposable jet nozzle to perforate at least the epidermis of the skin and to break at least one blood vessel, thereby allowing a quantity of blood to accumulate on the skin surface. A cowling prevents contamination of the local environment with excess fluid, blood, etc. A drying unit may be provided to remove excess fluid, blood, etc. from the skin within the cowling. A sample of blood may be transferred to a test strip, or a collection unit may be used to collect and contain a blood sample from the mammal.

US Patent:

20040147843, Jul 29, 2004

Filed:

Aug 26, 2003

Appl. No.:

10/647222

Inventors:

Shabbir Bambot - Suwanee GA, US
Mark Faupel - Alpharetta GA, US
Anant Agrawal - Atlanta GA, US
Keith Ignotz - Duluth GA, US
Andrew Fordham - Sugar Hill GA, US

International Classification:

A61B006/00

US Classification:

600/473000, 600/476000, 600/478000

Abstract:

A method and apparatus are provided that interrogate, receive, and analyze full emission spectra for at least one fluorescence excitation wavelength and for at least one reflectance measurement to determine tissue characteristics. The method includes illuminating a first portion of a target tissue with optical energy, forming a first image of the target tissue, illuminating a second portion of the target tissue with optical energy, performing spectroscopic measurements on optical energy reflected and/or emitted by the target tissue upon illumination of the second portion of the target tissue with optical energy, and determining tissue characteristics of the target tissue based on the results of the spectroscopic measurements. The apparatus and system include a base unit having illumination, detection and control sub-units, the illumination sub-unit providing illumination optical energy for illuminating a target tissue and the detection sub-unit detecting tissue characteristics of a target tissue, a separate tissue interface unit, and a pathway coupling the base unit and the tissue interface unit. The system and apparatus may also include a tissue interface unit configured to perform spectroscopic measurements on a target tissue, a docking unit configured to support the tissue interface when not in use, the docking unit including an illumination source and a processor that processes spectrographic measurements results received from the tissue interface unit, and a pathway coupling the docking unit and the tissue interface unit.

US Patent:

20080188736, Aug 7, 2008

Filed:

Apr 9, 2008

Appl. No.:

12/099876

Inventors:

Shabbir Bambot - Suwanee GA, US
Mark L. Faupel - Alpharetta GA, US
Anant Agrawal - Atlanta GA, US
Keith D. Ignotz - Duluth GA, US
Andrew Fordham - Sugar Hill GA, US

International Classification:

A61B 6/00

US Classification:

600407

Abstract:

A method and apparatus are provided that interrogate, receive, and analyze full emission spectra for at least one fluorescence excitation wavelength and for at least one reflectance measurement to determine tissue characteristics. The method includes illuminating a first portion of a target tissue with optical energy, forming a first image of the target tissue, illuminating a second portion of the target tissue with optical energy, performing spectroscopic measurements on optical energy reflected and/or emitted by the target tissue upon illumination of the second portion of the target tissue with optical energy, and determining tissue characteristics of the target tissue based on the results of the spectroscopic measurements. The apparatus and system include a base unit having illumination, detection and control sub-units, the illumination sub-unit providing illumination optical energy for illuminating a target tissue and the detection sub-unit detecting tissue characteristics of a target tissue, a separate tissue interface unit, and a pathway coupling the base unit and the tissue interface unit. The system and apparatus may also include a tissue interface unit configured to perform spectroscopic measurements on a target tissue, a docking unit configured to support the tissue interface when not in use, the docking unit including an illumination source and a processor that processes spectrographic measurements results received from the tissue interface unit, and a pathway coupling the docking unit and the tissue interface unit.

US Patent:

57920494, Aug 11, 1998

Filed:

Aug 6, 1997

Appl. No.:

8/906969

Inventors:

Jonathan A. Eppstein - Atlanta GA
Mark A. Samuels - Norcross GA
Keith D. Ignotz - Duluth GA
Gregory J. Newman - Atlanta GA

Assignee:

SpectRx, Inc. - Norcross GA

International Classification:

A61B 500

US Classification:

600306

Abstract:

A disposable calibration device is used to calibrate a spectroscopic measurement system which transmits radiation to a material or tissue in order to effect measurements such as bilirubin measurements. The disposable calibration device includes a structure with a window through which radiation can be transmitted, as well as a removable calibration target arranged on the window and capable of returning a portion of the radiation for calibrating the spectrometer system. The removable calibration target can be peeled of the window to allow a measurement to be made on the material or tissue. Once a measurement is complete, the disposable calibration device can be discarded and a new calibration device can be inserted on the spectroscopic system.

US Patent:

62265415, May 1, 2001

Filed:

Dec 17, 1997

Appl. No.:

8/992576

Inventors:

Jonathan A. Eppstein - Atlanta GA
Mark A. Samuels - Norcross GA
Keith D. Ignotz - Duluth GA

Assignee:

SpectRx, Inc. - Norcross GA

International Classification:

A61B 500

US Classification:

600407

Abstract:

A disposable calibration device is used to calibrate a measurement system which transmits radiation or acoustic waves to a material or tissue in order to effect measurements. The disposable calibration device includes a structure with a window through which the radiation or acoustic waves can be transmitted, as well as a removable calibration target arranged on the window and capable of returning a portion of the radiation or acoustic waves for calibrating the measurement system. The removable calibration target can be peeled from a window to allow a measurement to be made on the material or tissue. Once a measurement is complete, the disposable calibration device can be discarded and a new calibration device can be inserted on the measuring system.