Drug Reservoir Coding Collar for Medication Error Prevention

The patent applies local quality by adding specific coding features (protrusions and corresponding recesses) to localized areas of the cartridge and device interface. The coding feature on the cartridge is positioned at a specific location on the cartridge body, and the corresponding coding feature on the device is positioned at a specific location on the device housing. This localized coding approach maintains overall cartridge standardization while adding specific identification characteristics to prevent incorrect medicament selection.

The patent replaces the visual/color-based coding system with a mechanical/tactile coding system. Instead of relying on color codes that are difficult for users with poor eyesight or color blindness to distinguish, the invention uses physical protrusions and corresponding recesses that can be detected through touch. This mechanical coding system provides the same cartridge identification function but through a different sensory modality (tactile instead of visual), thereby improving accessibility for users with visual impairments.

The patent applies preliminary anti-action by incorporating a coding feature on the cartridge that is designed to be incompatible with certain device types before the medicament can be administered. The protrusion on the cartridge and the corresponding recess on the device create a mechanical interlock that prevents incorrect cartridges from being loaded into the device in the first place. This preliminary prevention mechanism stops potential medication errors and counterfeiting attempts before they can occur, without requiring complex active blocking mechanisms during operation.