Osmotic delivery system, osmotic delivery system semimpermeable body assembly, and method for controlling delivery rate of beneficial agents from osmotic delivery systems

An osmotic delivery system plug for controlling a delivery rate of a beneficial agent in an osmotic delivery system, the plug comprising:

• a body formed of a semipermeable material, the body having
• a recess having an interior surface beginning at an opening in the body and ending at a depth surface within the semipermeable body;
• a liquid contact surface located opposite the depth surface;
• an outer surface located opposite the interior surface, the outer surface having means for sealing an environment of use from an inside of an enclosure of an osmotic delivery system in which the body is insertable;
• a plug thickness defined by the distance from the depth surface to the liquid contact surface;
• and
• a wall width defined by the distance from the outer surface to the interior surface, at least one of the plug thickness and the wall width for controlling a rate of liquid permeation through the semipermeable body.

An osmotic delivery system plug for controlling a delivery rate of a beneficial agent in an osmotic delivery system, the plug comprising:

• a semipermeable body having
• a recess formed in a semipermeable portion of the semipermeable body, the recess having an interior surface beginning at an opening in the body and ending at a depth surface within the semipermeable body;
• a liquid contact surface located opposite the depth surface;
• an outer surface located opposite the interior surface, the outer surface having means for sealing an environment of use from an inside of an enclosure of an osmotic delivery system in which the body is insertable;
• a plug thickness defined by the distance from the depth surface to the liquid contact surface;
• and
• a wall width defined by the distance from the outer surface to the interior surface, at least one of the plug thickness and the wall width for controlling a rate of liquid permeation through the semipermeable body.