Title:
MINUTE VENTILATION SENSOR WITH DYNAMICALLY ADJUSTED EXCITATION CURRENT
Document Type and Number:
WIPO Patent Application WO2004007019
Kind Code:
A3
Abstract:
A minute ventilation sensing device in which transthoracic impedance is measured with a excitation current waveform at a specified amplitude and frequency. In order reduce interference with the impedance measurement from external noise sources, a noise detection operation may be performed with the amplitude and/or frequency of the excitation current waveform adjusted accordingly.
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Inventors:
LARSON DENNIS E
DAUM DOUGLAS R
DAUM DOUGLAS R
Application Number:
PCT/US2003/021821
Publication Date:
March 18, 2004
Filing Date:
July 10, 2003
Export Citation:
Assignee:
CARDIAC PACEMAKERS INC (US)
International Classes:
A61B5/08; A61B5/296; A61N1/365; A61N1/37; (IPC1-7): A61N1/365; A61B5/053; A61N1/37
Foreign References:
| US6161042A | 2000-12-12 | |||
| US5318597A | 1994-06-07 | |||
| US5817135A | 1998-10-06 | |||
| US5824029A | 1998-10-20 | |||
| US5522860A | 1996-06-04 |
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