System and method for recording and storing medical data in response to a programmable trigger
First Claim
1. A diagnostic system for use with an implantable medical device, the system comprising:
- sensing means for acquiring medical data from a heart;
first storage means for temporarily storing the medical data acquired by the sensing means;
a first selection means for selecting at least one trigger criteria from a plurality of trigger criteria;
second storage means for storing the at least one programmable trigger criterion;
first control means for applying the at least one trigger criterion to the medical data stored in the first storage means and for determining whether the at least one trigger criteria has been met; and
third storage means responsive to the first control means, for storing medical data acquired before and after the first control means determines that at least one trigger criterion has been met.
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Accused Products
Abstract
The system of the present invention records and stores, in long-term memory and in form of data snapshots, medical data acquired prior to and subsequent to an occurrence of cardiac episodes and implantable device functions defined as important by the medical practitioner. The system provides the medical practitioner with the ability to specify trigger criteria representative of important cardiac episodes and implantable device functions. The system of the present invention allows the medical practitioner to control the amount of medical data stored in the data snapshots. The system allows the medical practitioner to specify a mode of storing data snapshots when the maximum storage capacity of long-term memory has been reached. In a first mode, the system stores data snapshots in a circular buffer manner, overwriting the older data snapshots. In a second mode, the system stops storing new data snapshots after the maximum storage capacity of long-term memory has been reached.
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Citations
42 Claims
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1. A diagnostic system for use with an implantable medical device, the system comprising:
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sensing means for acquiring medical data from a heart; first storage means for temporarily storing the medical data acquired by the sensing means; a first selection means for selecting at least one trigger criteria from a plurality of trigger criteria; second storage means for storing the at least one programmable trigger criterion; first control means for applying the at least one trigger criterion to the medical data stored in the first storage means and for determining whether the at least one trigger criteria has been met; and third storage means responsive to the first control means, for storing medical data acquired before and after the first control means determines that at least one trigger criterion has been met. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A diagnostic method for use with a medical device implanted in a patient, the method comprising the steps of:
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(a) acquiring medical data from a heart; (b) temporarily storing the medical data acquired during the acquiring step; (c) selecting at least one trigger criterion from a plurality of trigger criteria; (d) storing the at least one programmable trigger criteria; (e) applying the at least one trigger criteria to the medical data stored during step (b); (f) determining whether the at least one trigger criteria has been met; and (g) storing medical data acquired before and after the determination at step (e) that at least one trigger criterion has been met. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. In an implantable cardiac device, a system for recording and storing intracardiac electrogram waveforms, comprising:
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converting means for acquiring and converting intracardiac electrogram waveforms into digitized intracardiac electrogram waveforms; storing means, coupled to the converting means, for temporarily storing a first predetermined number of the digitized intracardiac electrogram waveforms; detecting means for detecting when a change in a patient'"'"'s rhythm has occurred and for producing at least one rhythm-change signal in response thereto; and control means, in response to the detecting means, for triggering the storing means to permanently store the first predetermined number of digitized intracardiac electrogram waveforms acquired before the at least one rhythm-change signal was detected, and a second predetermined number of digitized intracardiac electrogram waveforms after the at least one rhythm-change signal was detected. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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40. In an implantable cardiac device, a system for recording and storing intracardiac electrogram waveforms, comprising:
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converting means for acquiring and converting intracardiac electrogram waveforms into digitized intracardiac electrogram waveforms; storing means, coupled to the converting means, for temporarily storing a first predetermined number of the digitized intracardiac electrogram waveforms; programming means for selectively programming a plurality of functions into the implantable medical device; detecting means for detecting when a change in at least one of the plurality of functions has occurred and for producing a change-in-function signal in response thereto; and control means, in response to the detecting means, for triggering the storing means to permanently store the first predetermined number of digitized intracardiac electrogram waveforms acquired before the at least one change-in-function signal was detected, and a second predetermined number of digitized intracardiac electrogram waveforms after the at least one change-in-function signal was detected. - View Dependent Claims (41)
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42. In an implantable cardiac device, a system for recording and storing intracardiac diagnostic data, comprising:
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converting means for acquiring a plurality of intracardiac diagnostic data, including intracardiac electrogram waveforms, and converting the data into digitized signals; storing means, coupled to the converting means, for temporarily storing a first predetermined number of the digitized signals; detecting means for detecting when a change has occurred in one of the plurality of intracardiac diagnostic data, and for producing a trigger signal in response thereto; and control means, in response to the detecting means, for triggering the storing means to permanently store the first predetermined number of digitized signals acquired before the trigger signal was detected, and a second predetermined number of digitized signals after the trigger signal was detected.
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Specification