Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Reexamination Certificate
2005-05-03
2005-05-03
Layno, Carl (Department: 3762)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
Reexamination Certificate
active
06889083
ABSTRACT:
A feature named “atrial tracking recovery” (ATR) provides for restoring delivery of cardiac pacing therapy upon identification of an atrial refractory sense-ventricular sense (AR-VS) pattern of cardiac activity. In one embodiment, such patterns are monitored to determine if they are terminable. Once the AR-VS pattern is identified, the then operative post-ventricular atrial refractory period (PVARP) is shortened to allow sensing of the atrial event, which previously was unable to initiate a sensed atrioventricular (SAV) interval. Subsequent SAV intervals are shortened until an atrial event is sensed so that a ventricular pacing stimulus is delivered after the SAV interval expires. Since the SAV interval is normally programmed to an interval that is shorter than the intrinsic conduction time, ventricular pacing stimulus is provided after the SAV ends, thereby effectively restoring delivery of a ventricular pacing modality such as cardiac resynchronization therapy (CTR).
REFERENCES:
patent: 3937226 (1976-02-01), Funke
patent: 5174289 (1992-12-01), Cohen
patent: 5247929 (1993-09-01), Stoop et al.
patent: 5267560 (1993-12-01), Cohen
patent: 5269299 (1993-12-01), Duncan
patent: 5403356 (1995-04-01), Hill et al.
patent: 5514161 (1996-05-01), Limousin
patent: 5514163 (1996-05-01), Markowitz et al.
patent: 5584867 (1996-12-01), Limousin et al.
patent: 5609610 (1997-03-01), Nappholz
patent: 5626623 (1997-05-01), Kieval et al.
patent: 5653738 (1997-08-01), Sholder
patent: 5674259 (1997-10-01), Gray
patent: 5720768 (1998-02-01), Verboven-Nelissen
patent: 5741309 (1998-04-01), Maarse
patent: 5792203 (1998-08-01), Schroeppel
patent: 5797970 (1998-08-01), Pouvreau
patent: 5814083 (1998-09-01), Hess et al.
patent: 5902324 (1999-05-01), Thompson et al.
patent: 6070100 (2000-05-01), Bakels et al.
patent: 6128533 (2000-10-01), Florio et al.
patent: 6129744 (2000-10-01), Boute
patent: 6167307 (2000-12-01), Hess
patent: 6256536 (2001-07-01), Kramer
patent: 6311088 (2001-10-01), Betzold et al.
Betzold Robert A.
Kleckner Karen J.
Lynn, Jr. Thomas G.
Layno Carl
McDowall Paul H.
Medtronic Inc.
Wolde-Michael Girma
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