Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1996-11-06
1998-06-16
Getzow, Scott
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 28, A61N 1365
Patent
active
057662304
ABSTRACT:
A pacemaker is disclosed that includes circuitry for monitoring the current and/or voltage delivered to the heart during a pacing pulse. A microprocessor connects to the monitoring circuitry and analyzes the current (and/or voltage) to determine when capture occurs. When capture occurs, the microprocessor terminates the pacing pulse to save energy. Conversely, if capture does not occur within a predetermined maximum time period, or if the pacing pulse amplitude falls below a predetermined threshold value, the processor immediately causes a safety pulse to fire to insure a regular beating of the heart. By monitoring the current and/or voltage delivered, and by permitting the pacing pulse width to be variable, the pacemaker of the present invention can closely track the pacing threshold of the patient with a minimum expenditure of energy.
REFERENCES:
patent: 3920024 (1975-11-01), Bowers
patent: 4373531 (1983-02-01), Wittkampf et al.
patent: 4674508 (1987-06-01), DeCote
patent: 4762136 (1988-08-01), Baker, Jr.
patent: 4817605 (1989-04-01), Sholder
patent: 4821724 (1989-04-01), Whigham et al.
patent: 4878497 (1989-11-01), Callaghan et al.
patent: 4895152 (1990-01-01), Callaghan et al.
patent: 4955376 (1990-09-01), Callaghan et al.
patent: 5161529 (1992-11-01), Stotts et al.
patent: 5324310 (1994-06-01), Greeninger et al.
patent: 5330512 (1994-07-01), Hauck et al.
Alt, E., C. Kriegler, P. Fotuhi, R. Willhaus, W. Combs, M. Heinz, and D. Hayes, "Feasibility of Using Intracardiac Impedance Measurements for Capture Detection," PACE (Nov., Part II, 1992), 15:1873-1879.
Auerbach, A. and S. Furman, "The Autodiagnostic Pacemaker," PACE (Jan.-Feb. 1979), 2:58-68.
Boltz, A., M. Hubmann, R. Hardt, J. Riedmuller, and M. Schaldach, "Low Polarization Pacing Lead for Detecting the Ventricular-evoked Response," Medical Progress through Technology (1993), 19:129-137.
Boute, W., G. Cals, P. Heijer, and F. Wittkampf, "Morphology of Endocardial T-Waves of Fusion Beats," PACE (Nov. 1988, Part II), 11:1693-1697.
Curtis, A.B., S. Maas, A. Domijan, Jr., S. Keim, and A. Duran, "A Method for Analysis of the Local Atrial Evoked Response for Determination of Atrial Capture in Permanent Pacing Systems," PACE (Nov. 1991, Part I), 14:1576-1581.
Curtis, A.B., F. Vance and Miller-Shifrin, K., "Characteristic Variation in Evoked Potential Amplitude with Changes in Pacing Stimulus Strength," The American Journal of Cardiology, 66:416-422.
Donaldson, R. and A. Rickards, "The Ventricular Endocardial Paced Evoked Response," PACE (Mar.-Apr. 1983, Part I), 6:253-259.
Dreifus, L., "In Search of Atrial Sensing and Capture," Pace (Apr. 1988), 11:381-383.
G. Feld, C. Love, J. Camerlo and R. Marsella, "A New Pacemaker Algorithm for Continuous Capture Verification and Automatic Threshold Determination: Elimination of Pacemaker Afterpotential Utilizing a Triphasic Charge Balancing System," PACE (Feb. 1992) 15:171-178.
Feuer, J., J. Florio, and A. Shandling, "Alternate Methods for the Determination of Atrial Capture Threshold Utilizing the Telemetered Intracardiac Electrogram," PACE (Oct. 1990), 13:1254-1260.
Livingston, A., F. Callaghan, C. Byrd, J. Heemels, P. Hollander, R. Van Mechelen, and J. Chappin, "Atrial Capture Detection with Endocardial Electrodes," PACE (Nov. 1988, Part II), 11:1770-1776.
Preston, T. and D. Bowers, "Clinical Applications of the Threshold Tracking Pacemaker," The American Journal of Cardiology, 36:322-326.
Schaldach, Max, "Automatic Adjustment of Pacing Parameters Based on Intracardiac Impedance Measurements," PACE (Dec., Part II, 1990), 13:1702-1710.
Deno Don Curtis
Rottenber William Bruce
Routh Andre Guy
Getzow Scott
Merkling John R.
Sulzer Intermedics Inc.
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