Owing to arthritis, the client is unable to remove his arthritis tablets from their foil blister pack wrapping. The blister pack is placed onto the platform with one tablet lined up with the plunger. Pressing the plunger forces the tablet out of its wrapping into the container below.
Other similar designs have been made over the years.
Since these aids were made, the range of commercial aids has improved and something like this may be suitable , even for those with dexterity issues: