Physiologic stimulator tuning apparatus and method
First Claim
1. Evaluation apparatus for use with a cardiac stimulation device, comprising impedance cardiography apparatus adapted for determining at least one aspect of cardiac function under varied conditions of stimulation produced by said device.
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Accused Products
Abstract
An improved apparatus and method for evaluating, tuning and operating a physiologic stimulator such as an implantable pacemaker or defibrillator. In one exemplary embodiment, an impedance cardiography system is used to measure one or more cardiac functions such as stroke volume or mitral regurgitation as the parameters determining the operation of the pacemaker are varied, such as via a non-invasive pacemaker programming device. After a plurality of the parameters have been programmed in and corresponding measurements of stroke volume or mitral regurgitation obtained, the data is evaluated to determine one or more optimized parameter values.
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Citations
54 Claims
- 1. Evaluation apparatus for use with a cardiac stimulation device, comprising impedance cardiography apparatus adapted for determining at least one aspect of cardiac function under varied conditions of stimulation produced by said device.
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18. A method of tuning a stimulation device, comprising:
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evaluating at least one aspect of cardiac function under varied conditions of stimulation produced by said stimulation device; and
tuning said stimulation device based at least in part on said act of evaluating. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of treating a patient having a cardiac stimulation device, comprising:
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evaluating at least one aspect of cardiac function under varied stimulation device settings, said act of evaluating being performed at least in part using impedance cardiography; and
tuning said stimulation device based at least in part on said act of evaluating. - View Dependent Claims (29, 30, 31, 32, 33)
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34. A method of operating a cardiac pacemaker implanted within a living subject, comprising:
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operating said pacemaker in a first operating condition;
measuring a first cardiac parameter using ICG to produce a first value;
operating said pacemaker in a second operating condition;
measuring said first cardiac parameter using ICG to produce a second value; and
evaluating said first and second values for use in subsequent operation. - View Dependent Claims (35, 36)
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37. A method of operating a cardiac pacemaker implanted within a living subject, comprising:
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operating said pacemaker with a first AV delay;
measuring a first cardiac parameter using ICG to produce a first value;
operating said pacemaker with a second AV delay;
measuring said first cardiac parameter using ICG to produce a second value; and
selecting on of said first and second values for use in subsequent operation.
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38. A method of operating a cardiac pacemaker implanted within a living subject, comprising:
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automatically iterating at least one parameter associated with the operation of said pacemaker across a plurality of different values, and measuring the value of at least one cardiac parameter using ICG during each iteration; and
selectively utilizing at least one of said plurality of different values for subsequent operation of said pacemaker. - View Dependent Claims (39, 40, 41, 42)
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43. Cardiac apparatus, comprising:
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a stimulation source adapted to produce a stimulation current;
a plurality of electrodes adapted for use on a living subject, at least a portion of said electrodes being further adapted to apply said stimulation current to said subject;
a pacemaker controller adapted to control at least one parameter associated with a pacemaker; and
processing means operatively coupled to at least a portion of said electrodes and said pacemaker controller, said processing means adapted to coordinate evaluation of signals obtained from said at least portion of electrodes with changes in said at least one parameter of said pacemaker in order to identify an optimal value thereof.
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44. Cardiac apparatus, comprising:
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a stimulation source adapted to produce a stimulation current;
a plurality of electrodes adapted for use on a living subject, at least a portion of said electrodes being further adapted to apply said stimulation current to said subject; and
a data interface adapted to transmit data between said apparatus and a pacemaker controller configured to control at least one parameter associated with a pacemaker; and
signal processing apparatus operatively coupled to at least a portion of said electrodes and said data interface, said signal processing apparatus adapted to coordinate evaluation of signals obtained from said at least portion of electrodes with changes in said at least one parameter of said pacemaker in order to identify an optimal value thereof.
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45. A method of operating a cardiac stimulation device, comprising:
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evaluating at least one aspect of cardiac function under varied stimulation device settings, said act of evaluating being substantially continuous and performed at least in part using impedance cardiography; and
tuning said stimulation device based at least in part on said act of evaluating. - View Dependent Claims (46)
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47. Biomedical apparatus, comprising:
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a stimulation source adapted to produce a stimulation current;
at least one electrode interface adapted to communicate electrical signals with a plurality of electrodes used on a living subject, at least a portion of said electrodes being adapted to apply said stimulation current to said subject; and
a data interface adapted to transmit data between said apparatus and a controller configured to control at least one parameter associated with a cardiovertor-defibrillator; and
signal processing apparatus operatively coupled to at least a portion of said electrode and data interfaces, said signal processing apparatus adapted to coordinate evaluation of signals obtained from said at least portion of electrodes with changes in said at least one parameter of said defibrillator in order to identify an optimal value thereof.
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48. A method of optimizing stimulation device lead placement, comprising:
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disposing at least one lead of said device in physical communication with a portion of a subject'"'"'s anatomy;
stimulating at least a portion of said anatomy using said lead;
measuring at least one parameter from said anatomy related to the functioning thereof; and
evaluating said act of disposing based at least in part on said act of measuring. - View Dependent Claims (49, 50, 51, 52, 53, 54)
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Specification