System and method for measuring and storing parametric data pertaining to operating characteristics of an implantable medical device
First Claim
1. An implantable cardiac stimulating device having telemetry means for communicating with an external displaying means, said implantable cardiac stimulating device comprising:
- pulse generating means for generating stimulation pulses, said pulse generating means having a plurality of varying parametric data associated therewith;
means for measuring said plurality of varying parametric data;
memory means for storing said plurality of parametric data measurements;
first control means for autonomously triggering said measuring means at predetermined intervals; and
second control means for transferring the plurality of stored parametric data from said memory means to said telemetry means and for triggering said telemetry means to communicate said stored parametric data to said external displaying means.
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Accused Products
Abstract
A system and method for measuring and storing parametric data pertaining to the operating characteristics of an implantable medical device are provided. The parametric data may include the impedance of a lead that is attached to a patient'"'"'s heart, and the internal impedance of a battery used to power the implantable medical device. The parametric data may be measured and stored at predetermined time intervals, as indicated by a clock provided within the implantable medical device. In addition, the parametric data measurements may be synchronized with the occurrence of a cardiac event, such as the application of a stimulation pulse to the patient'"'"'s heart. A plurality of measurements for each type of parametric data may be stored, so that when the parametric data are later retrieved and displayed on an external programmer/analyzer, trends in the data can be readily observed.
284 Citations
26 Claims
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1. An implantable cardiac stimulating device having telemetry means for communicating with an external displaying means, said implantable cardiac stimulating device comprising:
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pulse generating means for generating stimulation pulses, said pulse generating means having a plurality of varying parametric data associated therewith; means for measuring said plurality of varying parametric data; memory means for storing said plurality of parametric data measurements; first control means for autonomously triggering said measuring means at predetermined intervals; and second control means for transferring the plurality of stored parametric data from said memory means to said telemetry means and for triggering said telemetry means to communicate said stored parametric data to said external displaying means. - View Dependent Claims (2, 3, 4, 5)
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6. An implantable medical device having telemetry circuitry for communicating with an external programmer/analyzer, said implantable medical device comprising:
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data measurement circuitry for measuring parametric data pertaining to said implantable medical device after said device has been implanted in body tissue; memory for storing said parametric data; and control circuitry coupled to said data measurement circuitry and said memory, said control circuitry having a first, a second and a third control signal as an output, said first control signal being for triggering said data measurement circuitry to measure said parametric data at predetermined intervals, said second control signal being for triggering said memory to store said parametric data measured by said data measurement circuitry, and said third control signal being for triggering said telemetry circuitry to communicate said parametric data stored in said memory to said programmer/analyzer when a request for said stored parametric data is received from said programmer/analyzer via said telemetry circuit. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A method of acquiring parametric data pertaining to operating characteristics of an implantable medical device, said implantable medical device having telemetry circuitry for communicating with an external programmer/analyzer, said method comprising the steps of:
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autonomously measuring said parametric data at predetermined intervals using data measurement circuitry contained within said implantable medical device; storing said parametric data in a memory contained within said implantable medical device; receiving instructions from said programmer/analyzer via said telemetry circuitry to transmit said parametric data to said programmer/analyzer; and transmitting said parametric data to said programmer/analyzer in response to said received instructions. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. An implantable cardiac stimulation system, comprising:
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pulse generating means for generating stimulation pulses, said pulse generating means having a plurality of parametric data associated therewith, said plurality of parametric data varying over time; measuring means for automatically measuring said plurality of parametric data at predetermined intervals; storing means for storing said plurality of parametric data measurements; external display means for displaying said plurality of parametric data measurements; telemetry means for communicating said plurality of parametric data measurements to said external displaying means; and control means for transferring the stored parametric data from said storing means to said telemetry means and for triggering said telemetry means to communicate said stored parametric data to said external displaying means. - View Dependent Claims (23, 24, 25, 26)
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Specification