A medical device that contains at least one polymeric release region that either contains crazing or which is adapted to undergo crazing as a result of stresses that are applied during the implantation or insertion of the medical device into a patient; and and a therapeutic agent disposed beneath or within the polymeric release region. The mold opening is in fluid communication with the crucible opening. In situations where certain channels experience a greater degree of dispersion than others, the time slot assignment element may be configured to allot a greater number of time slots to the affected channels.