What specific US patent document describes an early medication dispenser with automated reminders filed in the early 1990s?

Answer

US5159581A

The patent documentation filed in the early 1990s specifically referenced as US5159581A outlines an engineering focus on automating the timing aspect of medication adherence. This system was designed to store medication and dispense it at predetermined intervals while incorporating an alarm or signaling mechanism to prompt the user. Although this iteration was not 'smart' in the modern internet-connected sense, it established the essential physical and logical architecture for subsequent automated adherence support tools by embedding the reminder function directly into the dispensing mechanism itself, laying critical groundwork for future advancements.

What specific US patent document describes an early medication dispenser with automated reminders filed in the early 1990s?
medicationinventionhealthdevicereminder