Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Reexamination Certificate
2006-06-13
2006-06-13
Bockelman, Mark (Department: 3766)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
C607S014000, C600S528000
Reexamination Certificate
active
07062323
ABSTRACT:
A cardiac rhythm management system includes an operational mode in which ventricular pacing pulses are delivered at a rate that tracks a sinoatrial rate up to an appropriate maximum atrial tracking rate (MATR) value determined by the system. In one example, the MATR value is based on a patient activity level and a hemodynamic maximum rate (HMR) determined from a QRS-to-S2interval, where S2is an accelerometer-generated fiducial correlative to aortic valve closure (AVC). In a further example, a correlation between the QRS-to-S2interval and heart rate is established, and the MATR is based on the patient activity level and heart rate. In a further example, a lower rate threshold for providing antitachyarrhythmia therapy is modified based on the MATR. For example, when the MATR exceeds a default value of the antitachyarrhythmia therapy lower rate threshold, the threshold tracks the MATR. In another example, the MATR is based on an active time between a QRS complex and a heart impedance signal maximum slope during the same cardiac cycle.
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“Examination Report, Application No. 02 802 141.8-2304, date mailed Apr. 26, 2005”, 4 Pages.
“International Search Report, Application No. PCT/US02/32891, date mailed Jan. 15, 2003”, 5 Pages.
Carlson Gerrard M.
Spinelli Julio C.
Zhu Qingsheng
Bockelman Mark
Cardiac Pacemakers Inc.
Schwegman Lundberg Woessner & Kluth P.A.
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