Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2005-08-19
2009-12-15
Layno, Carl H. (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
C600S528000, C600S513000, C600S485000
Reexamination Certificate
active
07634309
ABSTRACT:
A system, method, or device monitor a force-frequency relationship exhibited by a patient's heart. A contractility characteristic, such as a heart sound characteristic of an S1 heart sound, is measured. The contractility characteristic indicates the forcefulness of a contraction of the heart. The frequency at which the heart is contracting is determined. A group of (contractility characteristic, heart rate) pairs is stored in a memory device. The group of pairs defines a force-frequency relationship for the heart. The method may be implemented by an implantable device, or by a system including a implantable device.
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Carlson Gerrard M.
Wariar Ramesh
Cardiac Pacemakers Inc.
Heller Tammie K.
Layno Carl H.
Schwegman Lundberg & Woessner, P.A.
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