- 专利标题： Calibration of impedance monitoring of respiratory volumes using thoracic D.C. impedance
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申请号： US11114661申请日： 2005-04-26
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公开(公告)号： US20060241513A1公开(公告)日： 2006-10-26
- 发明人: John Hatlestad , Boyce Moon , Jesse Hartley , Jeffrey Stahmann
- 申请人： John Hatlestad , Boyce Moon , Jesse Hartley , Jeffrey Stahmann
- 专利权人： Cardiac Pacemakers, Inc.
- 当前专利权人： Cardiac Pacemakers, Inc.
- 主分类号： A61B5/05
- IPC分类号： A61B5/05
摘要：
A system includes an implantable medical device that includes a trans-thoracic impedance measurement circuit providing a trans-thoracic impedance signal of a subject. A controller is coupled to the trans-thoracic impedance circuit. The controller extracts a respiration signal from the trans-thoracic impedance signal, measures a breathing volume of the subject using the amplitude of the respiration signal and a breathing volume calibration factor, computes an adjusted breathing volume calibration factor using a reference baseline value of the trans-thoracic impedance and a measured baseline value of the trans-thoracic impedance, and computes a calibrated breathing volume using the adjusted breathing volume calibration factor.
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