Methods and apparatus for storing intracardiac electrograms
First Claim
1. An implantable cardiac device for measuring a plurality of intracardiac electrogram segments, generating a plurality of user selectable cardiac data records each of which contains an intracardiac electrogram segment, and receiving telemetric commands from a programmer, the implantable cardiac device comprising:
- a memory containing a plurality of archive cells;
a control unit;
sensing circuitry, connected to the control unit, for measuring the plurality of intracardiac electrogram segments; and
receiving circuitry for receiving a plurality of storage commands from the programmer, wherein;
the control unit stores user selectable cardiac data records, each of which contains a respective one of the plurality of intracardiac electrogram segments in respective ones of the plurality of archive cells in response to respective storage commands;
the control unit further comprising selecting circuitry for providing user selection of a specific one of the archive cells into which a given one of the cardiac data records is stored;
a predetermined cardiac event detector for initiating a delay time countdown following detection of the predetermined cardiac event;
wherein;
the memory contains a first additional archive cell;
when the delay time countdown is finished the sensing circuitry measures a first additional intracardiac electrogram segment; and
the control unit stores a first additional cardiac data record containing the first additional intracardiac electrogram segment in the first additional archive cell.
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Accused Products
Abstract
Methods and apparatus are provided for storing intracardiac electrogram (IEGM) and other cardiac data in an implantable cardiac device. When a physician wishes to create a cardiac data record containing the IEGM and other cardiac data, the physician directs the cardiac device to store the data on demand. A number of cardiac data records can be stored. Data records may also be stored after a delay period following a predetermined cardiac event. When the implantable cardiac device detects the predetermined cardiac event, the delay period begins. At the expiration of the delay period, the implantable cardiac device stores a cardiac data record. Cardiac data records can also be stored according to a predetermined schedule.
219 Citations
35 Claims
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1. An implantable cardiac device for measuring a plurality of intracardiac electrogram segments, generating a plurality of user selectable cardiac data records each of which contains an intracardiac electrogram segment, and receiving telemetric commands from a programmer, the implantable cardiac device comprising:
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a memory containing a plurality of archive cells; a control unit; sensing circuitry, connected to the control unit, for measuring the plurality of intracardiac electrogram segments; and receiving circuitry for receiving a plurality of storage commands from the programmer, wherein; the control unit stores user selectable cardiac data records, each of which contains a respective one of the plurality of intracardiac electrogram segments in respective ones of the plurality of archive cells in response to respective storage commands; the control unit further comprising selecting circuitry for providing user selection of a specific one of the archive cells into which a given one of the cardiac data records is stored; a predetermined cardiac event detector for initiating a delay time countdown following detection of the predetermined cardiac event;
wherein;the memory contains a first additional archive cell; when the delay time countdown is finished the sensing circuitry measures a first additional intracardiac electrogram segment; and the control unit stores a first additional cardiac data record containing the first additional intracardiac electrogram segment in the first additional archive cell. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An implantable cardiac device for measuring intracardiac electrogram segments, generating user selectable cardiac data records each of which contains an intracardiac electrogram segments, and receiving telemetric commands from a programmer, the implantable cardiac device comprising:
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a memory containing an archive cell; control unit; sensing circuitry connected to the control unit for measuring the intracardiac electrogram segments; and receiving circuitry for receiving a storage command from the programmer, wherein; the sensing circuitry measures an intracardiac electrogram segment; the control unit stores a cardiac data record containing the measured intracardiac electrogram segment in the archive cell in response to the storage command; and the control unit further comprises circuitry for appending physician user-inputted annotations onto the cardiac data record.
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8. A method of creating an archive of cardiac data in an implantable cardiac device that contains a memory and sensing circuitry for measuring a plurality of intracardiac electrogram segments, and which receives telemetric commands from a programmer, the method comprising the steps of:
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providing a plurality of archive cells within the memory; measuring a plurality of intracardiac electrogram segments; receiving a plurality of storage commands from the programmer; and storing a plurality of cardiac data records each of which contains a respective one of the intracardiac electrogram segments in respective archive cells in response to respective storage commands; and providing for user selection of a specific one of the archive cells into which a given one of the cardiac data records is to be stored. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of creating an archive of cardiac data in an implantable cardiac device that contains a memory and sensing circuitry for measuring intracardiac electrogram segments, and which receives telemetric commands from a programmer, the method comprising the steps of:
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providing an archive cell within the memory; measuring an intracardiac electrogram segment; receiving a storage command from the programmer; and storing a cardiac data record containing the measured intracardiac electrogram segment in the archive cell in response to the storage command, wherein the step of storing the cardiac data record further comprises the step of including physician annotations in the cardiac data record.
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16. An implantable cardiac device for measuring intracardiac electrogram segments, generating cardiac data records each of which contains one of the intracardiac electrogram segments, and receiving telemetric commands from a programmer, the implantable cardiac device comprising:
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a memory containing a first archive cell; a control unit; sensing circuitry connected to the control unit for measuring the intracardiac electrogram segments; schedule circuitry for establishing a scheduled time of day at which a first cardiac data record is to be stored; and detection circuitry for detecting when the scheduled time is reached, such that when the scheduled time of day is reached the sensing circuitry measures a first intracardiac electrogram segment and the control unit stores the first cardiac data record containing the first intracardiac electrogram segment in the first archive cell. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of creating an archive of cardiac data in an implantable cardiac device that contains a memory and sensing circuitry for measuring intracardiac electrogram segments, and which receives telemetric commands from a programmer, the method comprising the steps of:
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providing a first archive cell within the memory; measuring a first intracardiac electrogram segment; establishing a scheduled time of day at which a first cardiac data record containing the first intracardiac electrogram segment is to be stored; and storing the first cardiac data record in the first archive cell when the scheduled time of day has been reached. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification