公开(公告)号：US06985768B2

公开(公告)日：2006-01-10

申请号：US10376920

申请日：2003-02-28

申请人： Michael T. Hemming ,  John R. Hamilton ,  Daniel L. Hansen ,  Kent Samuelson

发明人： Michael T. Hemming ,  John R. Hamilton ,  Daniel L. Hansen ,  Kent Samuelson

IPC分类号： A61B5/402

CPC分类号： A61N1/365 ,  A61B5/0452

摘要： In general, the invention is directed to techniques for electrically detecting physiological events. The physiological events may include cardiac events such as R waves or p waves. In addition, the physiological events may include respiratory events. In general, the techniques involve converting an analog physiological signal to a digital delta value, correlating the digital delta value with a correlation template, and detecting a physiological event based on an output of the correlation. A digital correlation-based technique, as described herein, is implemented to reliably detecting physiological events, particularly for very small signals captured in the presence of significant background noise.

摘要翻译： 通常，本发明涉及用于电检测生理事件的技术。 生理事件可能包括心脏事件，如R波或P波。 此外，生理事件可能包括呼吸事件。 通常，技术涉及将模拟生理信号转换为数字增量值，将数字增量值与相关模板相关联，以及基于相关性的输出来检测生理事件。 如本文所描述的，基于数字相关的技术被实现为可靠地检测生理事件，特别是对于在存在显着背景噪声的情况下捕获的非常小的信号。

公开(公告)号：US20060293591A1

公开(公告)日：2006-12-28

申请号：US11127352

申请日：2005-05-12

申请人： John Wahlstrand ,  Greg Younker ,  Lawrence McClure ,  Kent Samuelson ,  Robert Sawchuk

发明人： John Wahlstrand ,  Greg Younker ,  Lawrence McClure ,  Kent Samuelson ,  Robert Sawchuk

IPC分类号： A61B5/05

CPC分类号： A61N1/3706 ,  A61N1/3718

摘要： An implantable medical device is provided having a telemetry circuit antenna; a lead having an elongated body for carrying a conductor extending from a proximal connector to a distal electrode; a circuit for measuring voltage induced on the telemetry circuit antenna and generating an antenna voltage signal corresponding to the measured voltage on the antenna; a circuit for measuring voltage induced on the lead conductor and generating a lead voltage signal corresponding to the measured voltage on the lead; and processing circuitry for receiving the antenna voltage signal and the lead voltage signal and for generating an MRI detection signal if the antenna voltage signal and the lead voltage signal meet an MRI detection requirement. The device further includes control circuitry for providing a safeguard response to the MRI detection signal.

摘要翻译： 提供具有遥测电路天线的可植入医疗装置; 具有用于承载从近端连接器延伸到远端电极的导体的细长主体的引线; 用于测量在遥测电路天线上感应的电压并产生对应于天线上的测量电压的天线电压信号的电路; 用于测量在引线导体上感应的电压并产生与引线上测得的电压相对应的引线电压信号的电路; 以及用于接收天线电压信号和引线电压信号并且用于在天线电压信号和引线电压信号满足MRI检测要求时产生MRI检测信号的处理电路。 该装置还包括用于向MRI检测信号提供保护响应的控制电路。