System and method for trigger-specific recording of cardiac signals using an implantable medical device
First Claim
1. A method performed by an implantable medical device for controlling the recording of signals within a patient, wherein the device is capable of recording different types of signals in response to different diagnostic triggers, the method comprising:
- storing an indication of particular signals to be stored in response to particular diagnostic triggers;
sensing signals within the patient;
detecting the occurrence of a trigger within the patient;
identifying, based on the particular detected trigger, the particular signals to be stored in response to the trigger;
storing the particular signals identified for storage;
wherein the signals are cardiac signals; and
wherein the indication of particular cardiac signals to be stored in response to particular triggers specifies, for each trigger, at least one combination of electrodes for sensing the cardiac signals to be stored.
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Accused Products
Abstract
Techniques are provided for controlling the recording of intracardiac electrograms (IEGMs) within an implantable medical device such as a pacemaker, wherein the device is capable of recording different channels of IEGMs in response to different diagnostic triggers. Exemplary triggers include pacemaker-mediated tachycardia; atrial tachycardia, atrial fibrillation, ventricular tachycardia, etc. In one example, the device stores, for each diagnostic trigger, a physician selection of particular IEGMs to be recorded for subsequent review. Then, whenever a trigger is detected, the device senses and records only the particular IEGMs that had been selected by the physician for that particular trigger. The IEGMs are eventually transmitted to an external programmer for review. In this manner, the physician can specify particular IEGMs to be stored in response to particular diagnostic triggers, thereby providing considerable diagnostic flexibility, while also conserving memory. Triggers can be classified as atrial-related or ventricular-related, with appropriate IEGMs stored. Pre-trigger IEGM storage can also be accommodated.
18 Citations
16 Claims
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1. A method performed by an implantable medical device for controlling the recording of signals within a patient, wherein the device is capable of recording different types of signals in response to different diagnostic triggers, the method comprising:
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storing an indication of particular signals to be stored in response to particular diagnostic triggers; sensing signals within the patient; detecting the occurrence of a trigger within the patient; identifying, based on the particular detected trigger, the particular signals to be stored in response to the trigger; storing the particular signals identified for storage; wherein the signals are cardiac signals; and wherein the indication of particular cardiac signals to be stored in response to particular triggers specifies, for each trigger, at least one combination of electrodes for sensing the cardiac signals to be stored. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method performed by an implantable medical device for controlling the recording of signals within a patient, wherein the device is capable of recording different types of signals in response to different diagnostic triggers, the method comprising:
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storing an indication of particular signals to be stored in response to particular diagnostic triggers; sensing signals within the patient; detecting the occurrence of a trigger within the patient; identifying, based on the particular detected trigger, the particular signals to be stored in response to the trigger; storing the particular signals identified for storage; wherein the signals are cardiac signals; and wherein the diagnostic triggers are classified as either atrial-related triggers or ventricular-related triggers and wherein the indication of particular cardiac signals to be stored in response to particular diagnostic triggers identifies the particular cardiac signals to be stored for atrial-related triggers and for ventricular-related triggers.
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13. A system for controlling the recording of signals within an implantable medical device capable of recording different types of signals in response to various diagnostic triggers, the system comprising:
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a storage unit operative to store an indication of particular signals to be stored in response to particular diagnostic triggers; a sensing system operative to sense signals; a diagnostic trigger detection unit operative to detect the occurrence of a particular trigger within the patient; a trigger-specific diagnostic selection unit operative to identify the particular signals to be stored based on the trigger detected by the diagnostic trigger detection unit and by the indication of particular signals stored by the storage unit; a trigger-specific signal storage controller operative to control the storage of the particular signals identified by the diagnostic selection unit;
whereinthe signals are cardiac signals; and the trigger-specific diagnostic selection unit specifies, for each trigger, at least one combination of electrodes for sensing the cardiac signals to be stored. - View Dependent Claims (14, 15)
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16. A system for controlling the recording of cardiac signals within an implantable medical device capable of recording different types of cardiac signals in response to various diagnostic triggers, the system comprising:
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means for storing an indication of particular cardiac signals to be stored in response to particular diagnostic triggers; means for sensing cardiac signals within the patient; means for detecting the occurrence of a trigger within the patient; means for identifying, based on the particular detected trigger, the particular cardiac signals to be stored in response to the trigger including means for specifying, for each trigger, at least one combination of electrodes for sensing the cardiac signals to be stored; and means for storing the particular cardiac signals identified for storage by the means for identifying.
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Specification