公开(公告)号：US5522389A

公开(公告)日：1996-06-04

申请号：US724865

申请日：1991-07-02

申请人： Bernhard Fischer ,  Peter Rother

发明人： Bernhard Fischer ,  Peter Rother

IPC分类号： A61B5/145 ,  A61B5/00 ,  A61B5/1459 ,  A61B5/1495 ,  A61B10/00

CPC分类号： A61B5/14539 ,  A61B5/1459

摘要： A system for measuring a blood parameter, such as pH, pCO.sub.2 or pO.sub.2, comprises an optical probe with an optical fiber and an invasive blood sensor. Light emitted by a light-emitting diode (1) is irradiated into an optical fiber (2). The system compensates for variations in the luminous efficiency of the LED (1) in that either a fraction of the light is fed directly to a photodetector (22), or in that the forward voltage of the LED is measured, and in that the signal received from the sensor is either normalized, or in that the LED drive current is adjusted accordingly.

摘要翻译： 用于测量血液参数（诸如pH，pCO 2或pO 2）的系统包括具有光纤和侵入性血液传感器的光学探针。 由发光二极管（1）发射的光被照射到光纤（2）中。 该系统补偿LED（1）的发光效率的变化，因为一部分光直接馈送到光电检测器（22），或者由LED的正向电压被测量，并且信号 从传感器接收到的是归一化的，或者相应地调节LED驱动电流。

公开(公告)号：US5383453A

公开(公告)日：1995-01-24

申请号：US749697

申请日：1991-08-26

申请人： Bernhard Fischer ,  Martin Wunderling ,  Martin Guenther

发明人： Bernhard Fischer ,  Martin Wunderling ,  Martin Guenther

IPC分类号： A61B5/145 ,  A61B5/00 ,  A61B5/1459 ,  G02B6/36 ,  G02B6/38

CPC分类号： G02B6/4471 ,  A61B5/14539 ,  A61B5/1459 ,  Y10T29/49826 ,  Y10T29/49929

摘要： An improved optical probe for the invasive measurement of blood parameters is disclosed that minimizes reading inaccuracy due to mechanical stresses. An optical probe for the invasive measurement of blood parameters is typically made up of various sensors that end in a sheath. Each sensor is connected to a monitor via an optical fiber. The optical fibers are surrounded by a tube. In the region where the sheath adjoins the tube, the sheath is deformed by crimping such that a better mechanical contact (form-locking) between the sheath, the sensors, and the tube can be obtained, in order to avoid systemic errors caused by displacement of the optical fibers inside the sheath.

摘要翻译： 公开了用于血液参数的侵入性测量的改进的光学探针，其最小化由于机械应力引起的读取不准确性。 用于侵入性测量血液参数的光学探针通常由在鞘中结束的各种传感器组成。 每个传感器通过光纤连接到监视器。 光纤被管包围。 在鞘与管连接的区域中，护套通过压接而变形，从而可以获得护套，传感器和管之间更好的机械接触（形成锁定），以避免由位移引起的系统性误差 的护套内的光纤。