Photoelectric oximeter
    5.
    发明授权
    Photoelectric oximeter 失效
    光电式血氧计

    公开(公告)号:US3998550A

    公开(公告)日:1976-12-21

    申请号:US621278

    申请日:1975-10-10

    摘要: An optical non-invasive oximeter for measuring oxygen saturation in arterial blood utilizes a light source capable of giving off light having different wavelengths, such as light in the infrared and red region, and a pair of photoelectric devices, one responding to one wavelength and the other to the other wavelength, for detecting the amount of such light transmitted through living tissue. Each photoelectric device is connected to a computing circuit which generates a signal that represents the logarithm of the quotient of the signal received from the photoelectric device divided by its direct current component. The signals from each of the computing circuits are differentiated and then divided, one by the other, to provide an indication of oxygen saturation in the blood.

    摘要翻译: 用于测量动脉血液中的氧饱和度的光学非侵入性血氧计利用能够发出具有不同波长的光的光源,例如红外和红色区域中的光,以及一对响应于一个波长的光电装置, 用于检测透过活体组织的这种光的量。 每个光电装置连接到计算电路,该计算电路产生一个信号,该信号表示从光电装置接收的信号商除以其直流分量的商的对数。 来自每个计算电路的信号被区分,然后被另一个分开,以提供血液中氧饱和度的指示。