Patent ID: 11964138
Assignee: SANOFI-AVENTIS DEUTSCHLAND GMBH
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. A method of monitoring operation of a manually operable injection device, the method comprising:
attaching a supplementary device to a side surface of an elongated housing of the injection device, wherein the elongated housing is configured to accommodate a drive mechanism including a piston rod and wherein a body of the supplementary device is shaped to enclose at least a portion of the elongated housing, and
connecting at least one connector of the supplementary device to the housing of the injection device;
grasping the supplementary device with the injection device attached thereto; and
applying a force to a dose button of the injection device while the supplementary device quantitatively measures a force component acting between a body of the supplementary device and the housing in a direction parallel to the elongation of the housing.