Patents by Inventor Charles Robert Ragsdale
Charles Robert Ragsdale has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140288400Abstract: Embodiments of the present disclosure include an optical probe capable of communicating identification information to a patient monitor in addition to signals indicative of intensities of light after attenuation by body tissue. The identification information may indicate operating wavelengths of light sources, indicate a type of probe, such as, for example, that the probe is an adult probe, a pediatric probe, a neonatal probe, a disposable probe, a reusable probe, or the like. The information could also be utilized for security purposes, such as, for example, to ensure that the probe is configured properly for the oximeter, to indicate that the probe is from an authorized supplier, or the like.Type: ApplicationFiled: June 3, 2014Publication date: September 25, 2014Applicant: MASIMO CorporationInventors: Mohamed Kheir Diab, Massi Joe E. Kiana, Charles Robert Ragsdale, James M. Lepper
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Patent number: 8781543Abstract: Embodiments of the present disclosure include an optical probe capable of communicating identification information to a patient monitor in addition to signals indicative of intensities of light after attenuation by body tissue. The identification information may indicate operating wavelengths of light sources, indicate a type of probe, such as, for example, that the probe is an adult probe, a pediatric probe, a neonatal probe, a disposable probe, a reusable probe, or the like. The information could also be utilized for security purposes, such as, for example, to ensure that the probe is configured properly for the oximeter, to indicate that the probe is from an authorized supplier, or the like.Type: GrantFiled: March 26, 2012Date of Patent: July 15, 2014Assignee: JPMorgan Chase Bank, National AssociationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, Jr.
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Publication number: 20120184832Abstract: Embodiments of the present disclosure include an optical probe capable of communicating identification information to a patient monitor in addition to signals indicative of intensities of light after attenuation by body tissue. The identification information may indicate operating wavelengths of light sources, indicate a type of probe, such as, for example, that the probe is an adult probe, a pediatric probe, a neonatal probe, a disposable probe, a reusable probe, or the like. The information could also be utilized for security purposes, such as, for example, to ensure that the probe is configured properly for the oximeter, to indicate that the probe is from an authorized supplier, or the like.Type: ApplicationFiled: March 26, 2012Publication date: July 19, 2012Applicant: MASIMO CORPORATIONInventors: Mohamed Kheir Diab, Esmaiel Kiani-Azarbayjany, Charles Robert Ragsdale, James M. Lepper, JR.
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Patent number: 8145287Abstract: Embodiments of the present disclosure include an optical probe capable of communicating identification information to a patient monitor in addition to signals indicative of intensities of light after attenuation by body tissue. The identification information may indicate operating wavelengths of light sources, indicate a type of probe, such as, for example, that the probe is an adult probe, a pediatric probe, a neonatal probe, a disposable probe, a reusable probe, or the like. The information could also be utilized for security purposes, such as, for example, to ensure that the probe is configured properly for the oximeter, to indicate that the probe is from an authorized supplier, or the like. In one preferred embodiment, coding resistors could be provided across the light sources to allow additional information about the probe to be coded without added leads. However, any device could be used without it being used in parallel.Type: GrantFiled: April 24, 2009Date of Patent: March 27, 2012Assignee: Masimo CorporationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, Jr.
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Publication number: 20090270703Abstract: Embodiments of the present disclosure include an optical probe capable of communicating identification information to a patient monitor in addition to signals indicative of intensities of light after attenuation by body tissue. The identification information may indicate operating wavelengths of light sources, indicate a type of probe, such as, for example, that the probe is an adult probe, a pediatric probe, a neonatal probe, a disposable probe, a reusable probe, or the like. The information could also be utilized for security purposes, such as, for example, to ensure that the probe is configured properly for the oximeter, to indicate that the probe is from an authorized supplier, or the like. In one preferred embodiment, coding resistors could be provided across the light sources to allow additional information about the probe to be coded without added leads. However, any device could be used without it being used in parallel.Type: ApplicationFiled: April 24, 2009Publication date: October 29, 2009Applicant: Masimo CorporationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, JR.
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Patent number: 7526328Abstract: Embodiments of the present disclosure include an optical probe capable of communicating identification information to a patient monitor in addition to signals indicative of intensities of light after attenuation by body tissue. The identification information may indicate operating wavelengths of light sources, indicate a type of probe, such as, for example, that the probe is an adult probe, a pediatric probe, a neonatal probe, a disposable probe, a reusable probe, or the like. The information could also be utilized for security purposes, such as, for example, to ensure that the probe is configured properly for the oximeter, to indicate that the probe is from an authorized supplier, or the like. In one preferred embodiment, coding resistors could be provided across the light sources to allow additional information about the probe to be coded without added leads. However, any device could be used without it being used in parallel.Type: GrantFiled: December 15, 2006Date of Patent: April 28, 2009Assignee: Masimo CorporationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, Jr.
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Patent number: 7496391Abstract: Embodiments of the present disclosure include an oximeter sensor system including a reusable portion including a substantially rigid connector connected to an end of a cable. The substantially rigid connector includes an electronic element housing at least one electronic component of a probe. The system also includes a disposable portion including a flexible wrap comprising a substantially rigid connection port shaped to receive the substantially rigid connector in a releasably securable manner.Type: GrantFiled: January 13, 2004Date of Patent: February 24, 2009Assignee: Masimo CorporationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, Jr.
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Publication number: 20040147824Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe, such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light emitting element such as a light emitting diode.Type: ApplicationFiled: January 13, 2004Publication date: July 29, 2004Inventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper
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Patent number: 6678543Abstract: Embodiments of the present disclosure include an oximeter sensor system including a reusable portion including a substantially rigid connector connected to an end of a cable. The substantially rigid connector includes an electronic element housing at least one electronic component of a probe. The system also includes a disposable portion including a flexible wrap comprising a substantially rigid connection port shaped to receive the substantially rigid connector in a releasably securable manner.Type: GrantFiled: November 8, 2001Date of Patent: January 13, 2004Assignee: Masimo CorporationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, Jr.
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Patent number: 6397091Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe, such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light emitting element such as a light emitting diode.Type: GrantFiled: November 30, 1999Date of Patent: May 28, 2002Assignee: Masimo CorporationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, Jr.
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Publication number: 20020062071Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe, such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light emitting element such as a light emitting diode.Type: ApplicationFiled: November 8, 2001Publication date: May 23, 2002Inventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper
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Publication number: 20010020123Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe, such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light emitting element such as a light emitting diode.Type: ApplicationFiled: November 30, 1999Publication date: September 6, 2001Inventors: MOHAMED KHEIR DIAB, ESMAIEL KIANI-AZARBAYJANY, CHARLES ROBERT RAGSDALE, JAMES M. LEPPER
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Patent number: 6011986Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe, such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light emitting element such as a light emitting diode.Type: GrantFiled: February 2, 1998Date of Patent: January 4, 2000Assignee: Masimo CorporationInventors: Mohamed Kheir Diab, Esmaiel Kiani-Azarbayjany, Charles Robert Ragsdale, James M. Lepper, Jr.
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Patent number: 5823950Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe, such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light emitting element such as a light emitting diode.Type: GrantFiled: November 12, 1996Date of Patent: October 20, 1998Assignee: Masimo CorporationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, Jr.
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Patent number: 5758644Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe, such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light emitting element such as a light emitting diode.Type: GrantFiled: June 7, 1995Date of Patent: June 2, 1998Assignee: Masimo CorporationInventors: Mohamed Kheir Diab, Massi E. Kiani, Charles Robert Ragsdale, James M. Lepper, Jr.