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    • 2. 发明公开
    • BLOOD OXIMETER
    • 血液OXIMETER
    • EP2194842A1
    • 2010-06-16
    • EP08807776.3
    • 2008-09-24
    • Koninklijke Philips Electronics N.V.
    • PRESURA, CristianHEINKS, CarstenSUCH, OlafGARCIA MOLINA, Gary, N.HOOFT, Gert
    • A61B5/00
    • A61B5/14551A61B5/721
    • The invention relates to a blood oximeter for measuring the oxygenation and at least one other parameter of flowing blood in living tissue. According to the invention, the blood oximeter comprises two lightsources (2, 3) emitting light of different wavelengths into tissue, and preferably a light detector (4) for detecting a transmitted and/or reflected part of the light emitted into the tissue, wherein at least one of the light sources is a laser with a laser cavity emitting a laser beam, the laser being adapted to allow a part of the laser beam which is scattered by the tissue to re-enter into the laser cavity, and wherein a laser beam sensor (7, 8) for measuring the light emitted from the laser is provided, the laser beam sensor (7, 8), thus, obtaining a signal which varies in accordance with the self-mixing interferometric effect between the original laser beam and the scattered laser beam. Accordingly, such a blood oximeter is provided that performs wellat low perfusion and which further allows for reliable measurements
    • 本发明涉及一种用于测量活体组织中血液流动的氧化和至少一个其他参数的血氧计。 根据本发明,血氧仪包括两个将不同波长的光发射到组织中的光源(2,3),并且优选地包括用于检测发射到组织中的光的透射部分和/或反射部分的光检测器(4),其中 所述光源中的至少一个是具有发射激光束的激光腔的激光器,所述激光器适于允许所述组织散射的激光束的一部分重新进入所述激光腔,并且其中激光器 提供用于测量从激光器发射的光的光束传感器(7,8),激光束传感器(7,8)因此获得根据原始激光束与原始激光束之间的自混合干涉效应而变化的信号 散射的激光束。 因此,提供这样的血液血氧计,其执行焊接低灌注并且进一步允许可靠的测量