Patent ID: 11951285
Assignee: ELI LILLY AND COMPANY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A method for determining initiation of a dispensing event, the method comprising:
providing an injection device assembly, the assembly comprising:
a housing,
a syringe assembly at least partially disposed within the housing,
a drive mechanism configured to drive the syringe assembly from a storage position to an injection position,
one or more skin-contact sensors, each sensor being configured to detect contact with skin tissue, and
an accelerometer disposed within the device assembly and configured to output a signal representative of sensed acceleration;

determining, by at least one processing circuit, whether at least one of the one or more skin-contact sensors detect contact with skin tissue;
analyzing, by the at least one processing circuit, the signal output by the accelerometer to detect a first acceleration spike;
determining, by the at least one processing circuit, that the first acceleration spike is caused by initiation of a dispensing event in which the syringe assembly is driven by the drive mechanism from the storage position to the injection position only when at least one of the one or more skin-contact sensors detect contact with skin tissue at a time when the first acceleration spike was detected.