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US 7,003,348 B1Granted
Monitoring cardiac geometry for diagnostics and therapy
AssigneePacesetter, Inc.
InventorsJames E. Brewer, Mark W. Kroll
Life of this patent
Estimating the term…
Abstract
An exemplary method includes determining, in vivo, position, displacement and/or spatial time derivatives of myocardial tissue. Such determinations are optionally made with respect to systolic and/or diastolic cycles. Further, position, displacement and/or spatial time derivatives may be used in cardiac diagnosis or therapy. Other exemplary methods, devices and/or systems are also disclosed.
Claims22
A method comprising:
- determining, in vivo, a myocardial tissue displacement based at least in part on a sensed potential;
- and
- diagnosing a cardiac condition based at least in part on the displacement.
A method comprising:
- determining, in vivo, a myocardial tissue displacement based at least in part on a sensed potential;
- and
- determining a cardiac therapy based at least in part on the displacement.
A method comprising:
- determining, in vivo, a left ventricular ejection fraction based at least in part on a sensed potential;
- determining, in vivo, an activity test parameter;
- and
- determining a survival risk based on the left ventricular ejection fraction and the activity test parameter.
1 more element
A method comprising:
- determining, in vivo, a first myocardial tissue displacement during systole based on a sensed potential;
- determining, in vivo, a second myocardial tissue displacement during diastole;
- and
- determining the difference between the first displacement and the second displacement.
1 more element
An implantable device comprising:
- means for determining a myocardial tissue displacement based at least in part on a sensed potential;
- and
- means for diagnosing a cardiac condition based on the displacement.
An implantable cardiac system comprising:
- an implantable device having a case capable of acting as an electrode;
- one or more implantable leads having one or more electrodes wherein the one or more leads are connectable to the device;
- and
- circuitry that is operative to deliver an electrical signal to a first electrode position in or adjacent to a cardiac chamber, sense a potential generated by the delivered electrical signal at a second electrode position, and determine a myocardial tissue displacement based at least in part on the sensed potential, wherein the circuitry is operative to diagnose a cardiac condition based at least in part on the displacement.
1 more element
Dependencies are inferred from the claim text.