Portable defibrillators

Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems

Reexamination Certificate

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Reexamination Certificate

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10497181

ABSTRACT:
A portable defibrillator includes a self-test circuit in which electrical energy is discharged from one or a bank of capacitors to a charge receiving circuit which recycles the energy to a rechargeable battery to prolong the original battery charge. A charge receiving circuit may contain a relatively high Ohmic value/low Wattage resistor such that the discharge occurs over a relatively long period of time, rendering a heat sink unnecessary. The resistor may be a single high value resistor or a network of plural smaller value resistors. Optional switching of the discharge electrical energy during a self-test either recycles it to the rechargeable battery or discharges it through the resistor. The self-test may be carried out on a bank of capacitors in rotation, discharging energy from one capacitor into the next such that all capacitors are charged and discharged from substantially a single power input.

REFERENCES:
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patent: 5800460 (1998-09-01), Mydynski et al.
patent: 5879374 (1999-03-01), Powers et al.
patent: 6073085 (2000-06-01), Kou et al.
patent: 6141584 (2000-10-01), Rockwell et al.
patent: 6169387 (2001-01-01), Kaib
patent: 6266562 (2001-07-01), Leyde
patent: 6501986 (2002-12-01), Schaldach et al.

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