Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-03-08
1997-04-15
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 31, 607 32, A61N 137
Patent
active
056204736
ABSTRACT:
A calibration system for use with an implantable pacemaker allows the intracardiac electrogram (IEGM) generated by the pacemaker to be calibrated when the pacemaker is coupled to an external programmer. The calibration system includes telemetry circuits within both the pacemaker and programmer that allow data signals to be sent from the pacemaker to the programmer, and that allow command signals to be sent from the programmer to the pacemaker, in conventional manner. The system further includes circuitry within the pacemaker that generates a precision reference voltage as well as a zero reference voltage, and that selectively switches the precision reference voltage and/or the zero reference voltage into the IEGM data signals being telemetered to the external programmer from the pacemaker. The switching of the precision reference voltage and/or zero reference voltage into the IEGM data occurs within the pacemaker upon receipt of a special calibration command signal from the programmer. Such reference voltages, when thus included as part of the telemetry data received from the pacemaker, is thereafter included in the display or storage of the IEGM at the programmer, and may be used to scale the IEGM display so that it fits a calibrated n mv/div graticule. The precision reference voltage thus provides a known calibrated reference against which the IEGM can be compared in order to provide a true measure of its amplitude at any given time.
REFERENCES:
patent: 3756245 (1973-09-01), Thaler et al.
patent: 4088139 (1978-05-01), Auerbach
patent: 4295474 (1981-10-01), Fischell
patent: 4374382 (1983-02-01), Markowitz
patent: 4596255 (1986-06-01), Snell et al.
patent: 4712179 (1987-12-01), Heimer
patent: 4712555 (1987-12-01), Thornander et al.
patent: 4788980 (1988-12-01), Mann et al.
patent: 4791936 (1988-12-01), Snell et al.
patent: 4809697 (1989-03-01), Causey et al.
patent: 4892102 (1990-01-01), Astrinsky
patent: 5123419 (1992-06-01), Platt et al.
patent: 5292341 (1994-03-01), Snell
patent: 5309919 (1994-05-01), Snell et al.
patent: 5402794 (1995-04-01), Wahlstrand et al.
patent: 5444638 (1995-08-01), Kwong et al.
Johnson et al., "A simplified approach to Electrocardiography," W. B. Saunders Co., pp. 17 & 18. 1986.
Kamm William E.
Pacesetter Inc.
Schaetzle Kennedy J.
LandOfFree
Calibration system for pacemaker-generated intracardiac electrog does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Calibration system for pacemaker-generated intracardiac electrog, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calibration system for pacemaker-generated intracardiac electrog will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-357234