Implantable heart stimulator
First Claim
1. An implantable heart stimulator comprising:
- a pulse generator which emits stimulation pulses adapted for delivery to a heart of a patient;
an IEGM unit adapted to obtain and register electrical IEGM signals from the heart, said IEGM signals having waveforms associated therewith;
a classifier connected to the IEGM unit for receiving the IEGM signals therefrom and for classifying the received IEGM signals according to their waveforms in at least one segment of a cardiac cycle, thereby producing classified IEGM signals, said classified IEGM signals containing beat-to-beat variability, and slow variability extending over several cardiac cycles;
a filter connected to said classifier and supplied with said classified IEGM signals, said filter extracting parameters related to respiration of the patient from said beat-to-beat variability in the classified IEGM signals and filtering out said slow variability; and
a control unit supplied with said parameters and connected to said pulse generator for controlling delivery of said stimulation pulses from said pulse generator dependent on said parameters.
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Accused Products
Abstract
An implantable heart stimulator comprises a pulse generator (3) for delivering stimulation pulses to the heart of a patient. An IEGM means (5) registers electric signals associated with the patient'"'"'s heart. A classifier means (6) classifies received electric IEGM signals according to their waveforms in at least one segment of the cardiac cycle, and a control means (4) controls the pulse generator depending on the classification of the IEGM signals. A first filtering means is provided to extract parameters related to the patient'"'"'s respiration from beat-to-beat variability in the IEGM signal classification while filtering away slow classification variability extending over several cardiac cycles. The control means is adapted to receive the respiration-related parameters to control the delivery of stimulation pulses from the pulse generator depending on these parameters.
85 Citations
13 Claims
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1. An implantable heart stimulator comprising:
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a pulse generator which emits stimulation pulses adapted for delivery to a heart of a patient;
an IEGM unit adapted to obtain and register electrical IEGM signals from the heart, said IEGM signals having waveforms associated therewith;
a classifier connected to the IEGM unit for receiving the IEGM signals therefrom and for classifying the received IEGM signals according to their waveforms in at least one segment of a cardiac cycle, thereby producing classified IEGM signals, said classified IEGM signals containing beat-to-beat variability, and slow variability extending over several cardiac cycles;
a filter connected to said classifier and supplied with said classified IEGM signals, said filter extracting parameters related to respiration of the patient from said beat-to-beat variability in the classified IEGM signals and filtering out said slow variability; and
a control unit supplied with said parameters and connected to said pulse generator for controlling delivery of said stimulation pulses from said pulse generator dependent on said parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification