Patent ID: 11890102
Assignee: ZOLL MEDICAL CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  H  Y | IPC A

Claim 9:
10. A battery-powered externally worn cardiac device with battery detachment detection, the device comprising:
a plurality of sensing electrodes configured to be coupled externally to a patient and to detect one or more ECG signals of the patient wearing the battery-powered externally worn cardiac device;
a therapy electrode configured to deliver a therapeutic shock to the patient wearing the battery-powered externally worn cardiac device;
a housing;
at least one processor disposed in the housing and being configured to process the one or more ECG signals of the patient wearing the battery-powered externally worn cardiac device and determine at least one arrhythmia based on the one or more ECG signals, wherein the at least one arrhythmia is one or more of ventricular fibrillation, ventricular tachycardia, bradycardia, tachycardia, or asystole;
a rechargeable battery removably coupled to the at least one processor; and
a battery detection circuit comprising
at least one battery cell,
detachment circuitry configured to:
determine whether the rechargeable battery is attached to the battery-powered externally worn cardiac device, and
output a battery status signal indicating that the rechargeable battery is detached from the battery-powered externally worn cardiac device, thereby rendering the battery-powered externally worn cardiac device unable to deliver the therapeutic shock, and

at least one of audible or vibrational alarm circuitry operably coupled to the detachment circuitry, the at least one of audible or vibrational alarm circuitry configured to
receive the battery status signal, and
output at least one of an audible alert in a predetermined frequency range or a tactile alert if the rechargeable battery is detached.