Dose detection with piezoelectric sensing for a medication delivery device

• Main Authors: KATUIN, Joseph Edward, PSZENNY, Sean Matthew
• Format: Patent
• Language: English
• Published: 13.10.2022
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The present disclosure relates to a medication delivery device comprising: a device body having a longitudinal axis; a dose setting member coupled to the device body and rotatable relative to the device body during a dose dispensing operation; an actuator coupled to the 5 device body and movable relative to the device body during the dose dispensing operation; and a dose detection system configured to detect rotation of the dose setting member during the dose dispensing operation, the dose detection system comprising: at least one deformable member; at least one piezoelectric sensor coupled to the at least one deformable member; and a plurality of force applicators arranged in a helical pattern on an outer surface of the dose 0 setting member, wherein each force applicator is configured to apply a mechanical force to the at least one deformable member and deform the piezoelectric sensor during the dose dispensing operation..