Sense array intelligent patch lead for an implantable defibrillator and method
First Claim
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1. A patch lead for use with an implantable defibrillator comprising:
- a patch lead body having a first plurality of electrical conductors and a connector at a proximal end for electrically connecting said first plurality of electrical conductors to the implantable defibrillator;
a patch electrode affixed to a distal end of said patch lead body, said patch electrode including a wire mesh mounted on an insulation backing element, said patch electrode being electrically connected to one of said first plurality of electrical conductors;
a plurality of sense electrodes affixed to said patch electrode and electrically insulated from said wire mesh; and
microprocessor affixed to said patch electrode and electrically connected to said plurality of sense electrodes, said microprocessor being electrically connected to at least one of said first plurality of electrical conductors of said lead body, said microprocessor processing signals provided by said sense electrodes and producing at least one output signal indicative of cardiac electrical activity.
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Abstract
An intelligent patch electrode having a plurality of sensor electrodes for use with an implantable defibrillator. The sensor electrodes are disposed in an array and connected to a microcircuit to sense a depolarization wave as it propagates through the ventricular tissue. The timing, direction of propagation, and point of initiation of successive depolarization waves can also be monitored.
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Citations
36 Claims
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1. A patch lead for use with an implantable defibrillator comprising:
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a patch lead body having a first plurality of electrical conductors and a connector at a proximal end for electrically connecting said first plurality of electrical conductors to the implantable defibrillator; a patch electrode affixed to a distal end of said patch lead body, said patch electrode including a wire mesh mounted on an insulation backing element, said patch electrode being electrically connected to one of said first plurality of electrical conductors; a plurality of sense electrodes affixed to said patch electrode and electrically insulated from said wire mesh; and microprocessor affixed to said patch electrode and electrically connected to said plurality of sense electrodes, said microprocessor being electrically connected to at least one of said first plurality of electrical conductors of said lead body, said microprocessor processing signals provided by said sense electrodes and producing at least one output signal indicative of cardiac electrical activity. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A patch electrode assembly for interconnection with an implantable defibrillator via a lead body having at least first and second electrical conductors, said patch electrode assembly comprising:
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a shaped wire mesh, said shaped wire mesh electrically connected to the first electrical conductor of the lead body; a backing sheet of biocompatible insulating material bonded to one surface of said shaped wire mesh; a plurality of sense electrodes affixed to said shaped wire mesh; means for insulating said plurality of sensor electrodes from said shaped wire mesh; a plurality of electrical conductors each having one end attached to a respective one of said plurality of sense electrodes; and a microprocessor for receiving electrical signals from said plurality of electrodes through said plurality of conductors, said microprocessor being connected to said second electrical conductor of the lead body. - View Dependent Claims (9, 10)
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11. A method of operating an implantable pacing and defibrillator system for monitoring and treating a heart, the defibrillator system including a patch lead having a wire mesh defibrillation electrode and a plurality of sense electrodes mounted on the surface of the heart, the method of operating the system comprising:
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using said plurality of sensors for sensing cardiac electrical activity including depolarization occurrences and wave propagation; determining the rate of depolarization occurrences and direction of propagation of depolarization waves to establish normal cardiac activity parameters and patterns thereof; and monitoring the cardiac electrical activity for depolarization wave propagation patterns which do not coincide with the established normal parameters. - View Dependent Claims (12, 13, 14)
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15. A method of operating an implantable pacing and defibrillator system for monitoring and treating a heart to which an intelligent patch electrode having a wire mesh electrode and a plurality of sensor electrodes is affixed, comprising the steps of:
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sensing the cardiac electrical activity using the plurality of sensor electrodes to determine a pacing rhythm, a depolarization wave propagation pattern, and pacing rates to establish normal cardiac electrical activity patterns; programming the defibrillator system with acceptable ranges for the established normal cardiac electrical activity patterns; storing the normal cardiac electrical activity patterns and the acceptable ranges; comparing subsequent cardiac electrical activity patterns to the stored normal cardiac electrical activity patterns and ranges; and treating the heart using electrical stimulus when the subsequent cardiac electrical activity patterns deviate from the acceptable ranges. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A patch lead for use with an implantable defibrillator, said patch lead comprising:
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a patch lead body having a first plurality of electrical conductors and a connector at a proximal end for electrically connecting said first plurality of electrical conductors to the implantable defibrillator; a patch electrode affixed to a distal end of said patch lead body, said patch electrode including a wire mesh mounted on an insulation backing element, said patch electrode being electrically connected to one of said first plurality of electrical conductors; and means for providing electrical sensing affixed to said patch electrode and electrically insulated from said wire mesh, said sensing means including means for sensing depolarization wave propagation. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A patch lead for use with an implantable defibrillator, said patch lead comprising:
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a patch lead body having a first plurality of electrical conductors and a connector at a proximal end for electrically connecting said first plurality of electrical conductors to the implantable defibrillator; a patch electrode affixed to a distal end of said patch lead body, said patch electrode including a wire mesh mounted on an insulation backing element, said patch electrode being electrically connected to one of said first plurality of electrical conductors; means for sensing cardiac electrical activity affixed to said patch electrode and electrically insulated from said wire mesh, wherein said sensing means produces at least one output signal; and signal processing means connected to said sensing means for receiving said at least one output signal from said sensing means and producing a processed output signal, said processed output signal corresponding to cardiac electrical activity. - View Dependent Claims (32)
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33. A patch lead for use with an implantable defibrillator, said patch lead comprising:
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a patch lead body having a first plurality of electrical conductors and a connector at a proximal end for electrically connecting said first plurality of electrical conductors to the implantable defibrillator; a shaped wire mesh, said shaped wire mesh electrically connected to a first one of said first plurality of electrical conductors of said lead body; a backing sheet of biocompatible insulating material bonded to one surface of said shaped wire mesh; a plurality of electrodes for sensing cardiac electrical activity affixed to said shaped wire mesh; means for insulating said plurality of sensor electrodes from said shaped wire mesh; a second plurality of electrical conductors each having one end attached to a respective one of said plurality of electrodes; and signal processing means for receiving electrical signals from said plurality of electrodes through said second plurality of electrical conductors and producing an output signal indicative of cardiac electrical activity, said signal processing means being connected to a second one of said first plurality electrical conductor of said lead body.
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34. A patch lead for use with an implantable defibrillator, said patch lead comprising:
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a patch lead body having a first plurality of electrical conductors and a connector at a proximal end for electrically connecting said plurality of electrical conductors to the implantable defibrillator; a patch electrode affixed to a distal end of said patch lead body, said patch electrode including a wire mesh mounted on an insulation backing element, said patch electrode being electrically connected to one of said plurality of electrical conductors; and a plurality of means for sensing cardiac electrical signals. - View Dependent Claims (35, 36)
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Specification