Becton, Dickinson and Company
UNIVERSAL SMART CAP FOR PEN INJECTORS

Abstract:

A two-part cap (100) for an injection pen (106) is provided. The cap includes a static portion (102) that remains on the pen injector (106), and a removable portion (104). The static portion (102) includes a dose sensor (126) for sensing movement of a plunger (118) within a reservoir (114) of the pen injector (106). A delivered dose is calculated based on the detected plunger movement.