Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1993-02-05
1995-02-21
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
324430, A61N 108
Patent
active
053911938
ABSTRACT:
A method and apparatus for estimating the remaining capacity of a lithium-iodine battery through the nomographic analysis of two or more measurements of battery impedance. In a preferred embodiment, a pacemaker or other implantable medical device is provided with circuitry for periodically measuring the internal impedance of its battery. Each measurement of impedance is stored along with an indication of when such measurement was made. Nomographic analysis, based upon the rated capacity of the battery and the expected internal impedance at various stages of depletion, allows for two or more time-stamped impedance measurements to serve as the basis for an extrapolation to estimate the remaining service life of the implantable medical device. Nomographic analysis may be performed by circuitry contained in the implanted device itself; in the alternative, periodic impedance measurements may be communicated to external processing circuitry via a telemetry channel.
REFERENCES:
patent: 4231027 (1980-10-01), Mann et al.
patent: 4259639 (1981-03-01), Renirie
patent: 4324251 (1982-04-01), Mann
patent: 4715381 (1987-12-01), Moberg
patent: 5137020 (1992-08-01), Wayne et al.
Datakey Data Sheet for Model DK1400 Data Key.
Datakey Preliminary Data Sheet for Model DT 1402 Data Tag and Model TRSR1402L Tag Receptacle.
Kamm William E.
Medtronic Inc.
Patton Harold R.
Schaetzle Kennedy J.
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