Automatic capture using independent channels in bi-chamber stimulation
AssigneePacesetter, Inc.
InventorsKerry Bradley, Joseph J. Florio, Gene A. Bornzin, Euljoon Park
Life of this patent
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Abstract
A cardiac stimulation device and method deliver independent stimulation pulses to right and left cardiac chambers, based on the capture thresholds of each chamber, and confirm capture in each chamber. A threshold test is performed in one chamber while stimulating the opposite chamber at increased pulse energy and adjusted interchamber delay.
Claims40
A method for bi-chamber stimulation and automatic capture detection for use in a cardiac stimulation device, the method comprising:
- delivering stimulation pulses to a first cardiac chamber and to an opposite chamber based on capture thresholds of the respective cardiac chambers and based on respective interchamber delays;
- verifying capture of the respective cardiac chambers;
- and
- if capture is not verified in the first cardiac chamber, performing a threshold test in the first cardiac chamber while stimulating the opposite cardiac chamber at an increased pulse energy and at an extended interchamber delay.
A cardiac stimulation device for bi-chamber stimulation and automatic capture testing, the device comprising:
- a pulse generator that delivers stimulation pulses to a first cardiac chamber and to an opposite cardiac chamber based on capture thresholds of the respective cardiac chambers;
- an automatic capture detector connected to the pulse generator, the detector being operative to verify capture of the respective cardiac chambers;
- wherein if the automatic capture detector confirms loss of capture in the first cardiac chamber, the automatic capture detector is operative to perform a threshold test in the first cardiac chamber while stimulating the opposite cardiac chamber at an extended interchamber delay and at an increased pulse energy;
- and
- wherein if the automatic capture detector confirms loss of capture in the opposite cardiac chamber, the automatic capture detector is operative to perform a threshold test in the opposite cardiac chamber while stimulating the first cardiac chamber at an extended interchamber delay and at an increased pulse energy.
A cardiac stimulation device for bi-chamber stimulation and automatic capture testing, the device comprising:
- means for stimulating a first cardiac chamber and an opposite cardiac chamber;
- means for verifying capture of the respective cardiac chambers;
- means for performing a threshold test in the first cardiac chamber while stimulating the opposite cardiac chamber at an extended interchamber delay and at an increased pulse energy if the first cardiac chamber is not captured;
- and
- means for performing a threshold test in the opposite cardiac chamber while stimulating the first cardiac chamber at an extended interchamber delay and at an increased pulse energy if the opposite cardiac chamber is not captured.
Dependencies are inferred from the claim text.