中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

40 records (took 0.021 seconds)

    34.
    发明专利
    未知

    公开(公告)号：ES2184868T3

    公开(公告)日：2003-04-16

    申请号：ES96917089

    申请日：1996-06-04

    Applicant: MASIMO CORP

    Inventor： DIAB MOHAMED KHEIR ,  KIANI-AZARBAYJANY ESMAIEL ,  RAGSDALE CHARLES ROBERT ,  LEPPER JAMES M JR

    IPC: A61B5/00 ,  H05B44/00 ,  A61B5/145 ,  A61B5/1455 ,  A61B5/1495 ,  G01J3/10 ,  G01J3/28 ,  G01N21/01 ,  G01N21/25 ,  G01N21/27 ,  G01N21/39 ,  G01N21/64 ,  G05F3/08 ,  H05B37/02

    Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) (162) 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 (150), 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 a light-emitting diode.

    35.
    发明专利
    未知

    公开(公告)号：DK0832421T3

    公开(公告)日：2002-12-16

    申请号：DK96917089

    申请日：1996-06-04

    Applicant: MASIMO CORP

    Inventor： LEPPER JAMES M JR ,  RAGSDALE CHARLES ROBERT ,  KIANI-AZARBAYJANY ESMAIEL ,  DIAB MOHAMED KHEIR

    IPC: A61B5/00 ,  H05B44/00 ,  A61B5/145 ,  A61B5/1455 ,  A61B5/1495 ,  G01J3/10 ,  G01J3/28 ,  G01N21/01 ,  G01N21/25 ,  G01N21/27 ,  G01N21/39 ,  G01N21/64 ,  G05F3/08 ,  H05B37/02

    Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) (162) 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 (150), 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 a light-emitting diode.

    BLOOD GLUCOSE MONITORING SYSTEM
    39.
    发明专利
    BLOOD GLUCOSE MONITORING SYSTEM 未知

    公开(公告)号：CA2221384A1

    公开(公告)日：1996-12-19

    申请号：CA2221384

    申请日：1996-06-04

    Applicant: MASIMO CORP

    Inventor： LEPPER JAMES M JR ,  DIAB MOHAMED KHEIR

    IPC: G01N21/35 ,  A61B5/00 ,  A61B5/145 ,  A61B5/1455 ,  G01N21/31 ,  G02B7/00 ,  A61B5/14 ,  G01N21/00 ,  G02B5/20

    Abstract: A blood glucose monitoring system includes a broadband light source and a specially fabricated optical filter for modulating optical radiation to be transmitted through a fleshy medium. Optical radiation which passes through the fleshy medium is detected by an optical detector which generates an electrical signal indicative of the intensity of the detected light. Digital signal processing is performed on the electrical signal to extract those optical characteristics of the electrical signal due to the optical characteristics of the filter and constituents of the fleshy May 1, 1995 medium other than blood glucose concentration. The monitoring system employs a unique "double-log" transformation to minimize errors due to indeterminate path length variations of the optical radiation through the fleshy medium. The monitoring system further employs specialized signal processing to avoid inaccuracies due to the previously unidentified solvent effect which arises when glucose is dissolved into water.

Patent Agency Ranking