Patent ID: 11944808
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 21:
22. A method comprising:
with a defibrillator including
a body including a handle and a surface,
a circuit including a piezoelectric crystal within the handle,
a pair of disposed externally accessible electrodes that are in operative connection with the circuit and in fixed operative connection with the surface,
at least one processor,
at least one indicator,
at least one capacitor, and
at least one switch, wherein the at least one switch is operative to selectively electrically connect at least one of the electrodes and the piezoelectric crystal,

a) responsive at least in part to movement of a trigger on the handle, causing a hammer that is movably mounted relative to the body to impart at least one impact strike to the piezoelectric crystal to generate electrical energy, and with the at least one switch in a first position the circuit causes the at least one capacitor to be charged,
b) responsive at least in part to the at least one charged capacitor, operating the at least one processor to cause at least one output through the at least one indicator,
c) causing the at least one switch to change from the first position to a second position responsive at least in part to engagement of the pair of electrodes with a surface,
d) subsequent to (c) and responsive at least in part to the at least one impact strike, causing an electrical potential between the electrodes,
wherein the electrical potential between the electrodes is sufficient to provide an electrical shock to heart muscles of a patient through the pair of electrodes when the electrodes are in direct engagement with the surface which comprises the chest of the patient.