SYSTEMS AND METHODS TO SYNCHRONIZE COMMANDS SENT TO A MULTI-ELECTRODE LEAD (MEL) WITH A PORTION OF A CARDIAC PACING CYCLE
First Claim
1. A method for use by an implantable cardiac stimulation device includingsensing circuitry adapted to selectively obtain, using electrodes selectively connected to the sensing circuitry, one or more signals indicative of cardiac electrical activity,storage circuitry adapted to store data indicative of at least one of the one or more signals obtained using the sensing circuitry, andpulse generator circuitry adapted to produce cardiac pacing pulses,the method for use when sending one or more commands to control circuitry within a multi-electrode lead (MEL) attached to the implantable cardiac stimulation device, the method comprising:
- sending the one or more commands, to control circuitry within the MEL, between instances when the sensing circuitry is being used to obtain the one or more signals indicative of cardiac electrical activity.
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Abstract
Embodiments of the present invention concern the timing of sending one or more commands to control circuitry of a multi-electrode lead (MEL). In one embodiment, the one or more commands are sent to control circuitry within the MEL during a predetermined portion of a cardiac pacing cycle to avoid potential problems of prior systems that were not synchronized with the cardiac pacing cycle. In one embodiment, the one or more commands are sent when cardiac tissue is refractory from a cardiac pacing pulse, to prevent the command(s) from potentially undesirably stimulating cardiac tissue. The command sending can occur such that the one or more commands are sent between instances when sensing circuitry of the implantable cardiac stimulation device is being used to obtain one or more signals indicative of cardiac electrical activity, to prevent interference between the one or more commands with the signals indicative of cardiac electrical activity that are sensed.
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Citations
26 Claims
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1. A method for use by an implantable cardiac stimulation device including
sensing circuitry adapted to selectively obtain, using electrodes selectively connected to the sensing circuitry, one or more signals indicative of cardiac electrical activity, storage circuitry adapted to store data indicative of at least one of the one or more signals obtained using the sensing circuitry, and pulse generator circuitry adapted to produce cardiac pacing pulses, the method for use when sending one or more commands to control circuitry within a multi-electrode lead (MEL) attached to the implantable cardiac stimulation device, the method comprising: sending the one or more commands, to control circuitry within the MEL, between instances when the sensing circuitry is being used to obtain the one or more signals indicative of cardiac electrical activity. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An implantable cardiac stimulation device, comprising:
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sensing circuitry adapted to selectively obtain, using electrodes selectively connected to the sensing circuitry, one or more signals indicative of cardiac electrical activity; storage circuitry adapted to store data indicative of at least one of the one or more signals obtained using the sensing circuitry; pulse generator circuitry adapted to produce cardiac pacing pulses; and a controller adapted to send one or more commands, to control circuitry within a multi-electrode lead (MEL) attached to the implantable cardiac stimulation device, between instances when the switching circuitry is causing the sensing circuitry to be connected to the MEL and used to obtain the one or more signals indicative of cardiac electrical activity. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for use by an implantable cardiac stimulation device, the method for use when sending one or more commands to control circuitry within a multi-electrode lead (MEL) attached to the implantable cardiac stimulation device, the method comprising:
sending the one or more commands, to control circuitry within the MEL, during a predetermined portion of a cardiac pacing cycle such that the one or more commands are sent when cardiac tissue is refractory from a cardiac pacing pulse. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An implantable cardiac stimulation device, comprising:
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sensing circuitry adapted to selectively obtain, using electrodes selectively connected to the sensing circuitry, one or more signals indicative of cardiac electrical activity; storage circuitry adapted to store data indicative of at least one of the one or more signals obtained using the sensing circuitry; pulse generator circuitry adapted to produce cardiac pacing pulses; and a controller adapted to send one or more commands, to control circuitry within a multi-electrode lead (MEL) attached to the implantable cardiac stimulation device, during a predetermined portion of a cardiac pacing cycle such that the one or more commands are sent when cardiac tissue is refractory from a said cardiac pacing pulse. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification