Yet another monitor design incorporates an array of compartments with each compartment holding a day's dose of medication. As shown in Figure 1, access to successive compartments can be controlled by a moveable cover which uncovers successive compartments, one at a time. The exploded view shows the cover belt which consists of a belt of cover material having a series of spaced holes. The cover belt is wound onto a supply reel when the monitor is filled and given to the patient.
The cover is moved by unwinding it incrementally from the supply reel and onto a take up reel. With each incremental movement, a dispensing opening moves over successive compartments in one row of the array. When the dispensing hole has completely traversed the first row of compartments, a second hole begins traversing the second row of compartments, and so on until medication has been dispensed from all compartments.
Figure 1 shows several other components of the Multi- compartment Monitor: a cover grate which prevents the cover material from being lifted off of the array of compartments, a sprocket for moving the cover in the required increments, and a case. A gravity lock could also be incorporated into the mechanism so that after the cover had been moved one position, it could not be moved again until the monitor was inverted to assure that the medication had been removed.