Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1996-10-28
1998-02-03
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 9, A61N 137
Patent
active
057139326
ABSTRACT:
In a dual chamber cardiac stimulators, e.g. cardiac pacemaker or pacemaker/cardioverter/defibrillator (PCD) system, which relies upon the detection of atrial depolarizations or the stimulation of the atria in the performance of a defined function, a method and apparatus for determining the existence of an atrial pace/sense electrode(s) dislocation from an atrial site to a position inferior to the AV node of the heart thereby affecting a function, e.g. providing a false indication of atrial tachyarrhythmia. The determination of the occurrence of a dislocation of the atrial pace/sense electrode is effected by applying a test pace pulse to the atrial pace/sense electrode; detecting the immediately following ventricular depolarization from a ventricular sense electrode; measuring the interval between the delivered atrial pace pulse and the detected ventricular depolarization; comparing the measured interval to a threshold AV interval; and determining that the atrial pace/sense electrode is in contact with the right atrium if the measured interval is longer than the threshold AV interval. Preferably, the determination is effected by: providing a first signal when the measured AV interval exceeds the threshold AV interval and a second signal when the measured AV interval is less than the threshold AV interval; applying a series of M atrial pace pulses to the atrial pace/sense electrode; counting the number of first and second signals provided in response to the series of atrial pace pulses; and determining that the atrial pace/sense electrode is located in the right atrium when a number of first signals are provided in a series of delivered atrial pace pulses. Confirmation of a provisional tachyarrhythmia is also made from the number of first and second signals.
REFERENCES:
patent: 4248238 (1981-02-01), Joseph
patent: 4316472 (1982-02-01), Mirowski et al.
patent: 4577633 (1986-03-01), Berkovits
patent: 4860749 (1989-08-01), Lehmann
patent: 4953551 (1990-09-01), Mehra et al.
patent: 5117824 (1992-06-01), Keimel et al.
patent: 5163427 (1992-11-01), Keimel
patent: 5188105 (1993-02-01), Keimel et al.
patent: 5201865 (1993-04-01), Kuehn
patent: 5330508 (1994-07-01), Gunderson
patent: 5342402 (1994-08-01), Olson
patent: 5383910 (1995-01-01), den Dulk
patent: 5558098 (1996-09-01), Fain
Leong et al., "Matic An Intracardiac Classification System"PACE , vol. 15, Sep. 1992, pp. 1217-31.
R, Arzbaecher et al., "Automatic Tachycardia Recognition", PACE, vol. 7, pp. 541-547, May-Jun. 1984, Part II.
den Dulk et al., "Is There a Universal Antitachycardia Pacing Mode", Am. J. Cardiology, 1986, 57:950-5.
S. Furman et al., "Necessity of Signal Processing in Tachycardia Detection", The Third Decade of Cardiac Pacing: Advances in Technology in Clinical Applications, Futura Publishing, 1982, pp. 265-274.
Brown Mark L.
Gillberg Jeffrey M.
Duthler Reed A.
Evanisko George R.
Kamm William E.
Medtronic Inc.
Patton Harold R.
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