公开(公告)号：WO1995016388A1

公开(公告)日：1995-06-22

申请号：PCT/US1994013586

申请日：1994-11-22

Applicant: NELLCOR INCORPORATED

Inventor： NELLCOR INCORPORATED ,  MERCHANT, Adnan, I. ,  BERNSTEIN, Michael

IPC: A61B05/00

CPC classification number: A61B5/14551 ,  A61B5/0017

Abstract: The present invention provides a medical sensor for detecting a blood characteristic. The sensor includes a transducer for producing an analog signal related to the blood characteristic. The analog signal is converted into a transmission signal which is in amplitude-independent form for transmission to a remote analyzer. In one embodiment, a current-to-frequency converter converts a signal from a pulse oximeter sensor into a frequency signal which can be transmitted over a transmission line to a remote pulse oximeter.

Abstract translation: 本发明提供一种用于检测血液特性的医疗传感器。 传感器包括用于产生与血液特性相关的模拟信号的换能器。 模拟信号被转换为与振幅无关的传输信号，用于传输到远程分析仪。 在一个实施例中，电流 - 频率转换器将来自脉搏血氧计传感器的信号转换成可以通过传输线传输到远程脉搏血氧计的频率信号。

公开(公告)号：WO1995016387A1

公开(公告)日：1995-06-22

申请号：PCT/US1994013497

申请日：1994-11-22

Applicant: NELLCOR INCORPORATED

Inventor： NELLCOR INCORPORATED ,  FEIN, Michael E. ,  JENKINS, David C. ,  BERNSTEIN, Michael, J. ,  VENKATACHALAM, K., L. ,  MERCHANT, Adnan, I. ,  BOWDEN, Charles, H.

IPC: A61B05/00

CPC classification number: A61B5/14551 ,  A61B5/0002 ,  A61B5/7228 ,  A61B2562/08

Abstract: The present invention provides an encoding mechanism for a medical sensor which uses a modulated signal to provide the coded data to a remote analyser. The modulated signal could be, for instance, a pulse width modulated signal or a frequency modulated signal. This signal is amplitude independent and thus provides a significant amount of noise immunity.

Abstract translation: 本发明提供了一种用于医疗传感器的编码机构，其使用调制信号将编码数据提供给远程分析器。 调制信号可以是例如脉冲宽度调制信号或调频信号。 该信号是幅度无关的，因此提供了大量的抗噪声能力。