Improvements of an optical sensing system of a drug delivery device

An optical guiding device configured for application with a drug delivery device is described. The drug delivery device has (i) a movable dosage programming component including a rotary encoder system and (ii) a sensor arrangement including at least one optical sensor. The at least one optical senso...

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Bibliographische Detailangaben
Hauptverfasser:	Allerdings, Alexander, O`Hare, Aidan Michael, Hobson, Matthew Francis, Mason, Craig Ashley, Gazeley, Oliver Charles
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS 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 MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MEDICAL OR VETERINARY SCIENCE PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	An optical guiding device configured for application with a drug delivery device is described. The drug delivery device has (i) a movable dosage programming component including a rotary encoder system and (ii) a sensor arrangement including at least one optical sensor. The at least one optical sensor is configured to detect movement of the movable dosage programming component relative to the sensor arrangement during dosing of a drug by emitting radiation and detecting at least one reflections the emitted radiation from the rotary encoder system. The optical guiding device is configured for guiding the radiation and the at least one reflection of the emitted radiation and includes at least one light pipe having the shape of a frustum with a sensor-side surface and a encoder-side surface.