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1. 发明授权

US6159166A Sensor and method for sensing arterial pulse pressure 失效
标题翻译：用于感测动脉脉压的传感器和方法
公开(公告)号：US6159166A
公开(公告)日：2000-12-12
申请号：US45018
申请日：1998-03-20
申请人： Charles F. Chesney , Dennis J. Morgan , Eugene A. O'Rourke , Michael T. Riggs , Fred Randall Thornton
发明人： Charles F. Chesney , Dennis J. Morgan , Eugene A. O'Rourke , Michael T. Riggs , Fred Randall Thornton
IPC分类号： A61B5/021 , A61B7/00 , A61B7/04 , A61B5/02
CPC分类号： A61B7/00 , A61B5/021 , A61B5/02108 , A61B7/045
摘要： A method and a pulse pressure sensor for sensing an arterial pulse pressure waveform. In one embodiment, the pulse pressure sensor includes a housing, a diaphragm, a piezoelectric device, and a self-contained amplifier. The skin-contact diaphragm is attached across a recess or opening in the housing. The piezoelectric device has a first portion mounted in a fixed relationship to the housing and a second portion displacementally coupled to the diaphragm. The solid-state amplifier has a signal input coupled to the piezoelectric device, wherein the piezoelectric device and amplifier together have a frequency response at least including a range from below approximately 0.1 hertz to above approximately 250 hertz. In one such embodiment, the housing and the skin-contact diaphragm of the sensor are stainless steel. In one such embodiment, the diaphragm has a skin-contact surface with a skin-contact dimension of between approximately 0.4 inch and 0.6 inch. In one embodiment, the sensor includes a solid-state amplifier that includes a high-input-impedance MOSFET input stage having an input resistance high enough to provide a frequency response that extends below approximately 0.1 hertz.
摘要翻译：一种用于感测动脉脉压波形的方法和脉搏压力传感器。在一个实施例中，脉冲压力传感器包括外壳，隔膜，压电装置和独立放大器。皮肤接触隔膜穿过外壳中的凹槽或开口。压电装置具有以与壳体成固定关系的方式安装的第一部分和与隔膜成一体的第二部分。固态放大器具有耦合到压电器件的信号输入，其中压电器件和放大器一起具有频率响应，至少包括从低于约0.1赫兹到大约250赫兹的范围。在一个这样的实施例中，传感器的外壳和皮肤接触隔膜是不锈钢。在一个这样的实施例中，隔膜具有皮肤接触表面，皮肤接触尺寸在大约0.4英寸和0.6英寸之间。在一个实施例中，传感器包括固态放大器，其包括高输入阻抗MOSFET输入级，其具有足够高的输入电阻以提供延伸到大约0.1赫兹以下的频率响应。

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