Battery drain kill feature in a battery powered device

摘要

A medical instrument is disclosed. The medical instrument includes at least one electrical contact, a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact, a battery discharge circuit coupled to the RF generation circuit, a processor coupled to the battery discharge circuit, and a memory coupled to the processor. The memory stores computer instructions that when executed cause the processor to monitor battery capacity and send a signal to the battery discharge circuit to discharge a battery coupled to the battery discharge circuit when the battery capacity falls below a predetermined threshold.

主权项

1. A medical instrument, comprising:
at least one electrical contact; a radio frequency (RF) generation circuit coupled to and operated by a battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact; a battery discharge circuit coupled to the RF generation circuit; a processor coupled to the battery discharge circuit; a memory coupled to the processor, the memory stores computer instructions that when executed cause the processor to:
monitor battery capacity; andsend a signal to the battery discharge circuit to discharge a battery coupled to the battery discharge circuit when the battery capacity falls below a predetermined threshold; and an output sensing circuit comprising a dummy load and coupled to the processor, wherein the output sensing circuit is configured to verify output current and output voltage sensing functions, wherein the processor is configured to:
measure a first battery current;apply a second battery current to the dummy load;measure the second battery current after the second battery current is applied to the dummy load; anddetermine an energy sufficiency in the battery to proceed based on the measured first battery current and the measured second battery current.