The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2016
Filed:
Jan. 08, 2009
Michael J. Lyden, Shoreview, MN (US);
William J. Linder, Golden Valley, MN (US);
Angela M. Muttonen, Forest Lake, MN (US);
George D. Ritzinger, Vadnais Heights, MN (US);
Michael J. Lyden, Shoreview, MN (US);
William J. Linder, Golden Valley, MN (US);
Angela M. Muttonen, Forest Lake, MN (US);
George D. Ritzinger, Vadnais Heights, MN (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
An implantable medical device performs impedance measurement and demodulation, such as for obtaining lead impedance measurements, or thoracic impedance measurements, such as for extracting respiration, cardiac stroke, or fluid status information. A 4-point FIR filter demodulator can be used to demodulate a two-phase current excitation waveform. The demodulator can also be used to measure noise for triggering a noise response. Among other things, an increased excitation current level can be used when noise is deemed to be present.