Multidose Dispenser for Unpreserved Ophthalmic Solutions

A novel means of maintaining the sterility of ophthalmic solutions will be created wherein amembrane type dispenser is employed to provide sterile preservative free solutions. The device protectsa sterile solution through the use of a specially treated membrane that prevents the growth of microorganisms from the septic side of the bottle. The dispenser maintains sterility by employing two distinctmechanisms, these being the filtration of pathogens from a solution through physical exclusion, asrelated to the size of the pores of the membrane. Secondly, and most importantly, pathogens cannot"grow-through" the membrane because it is chemically treated to be toxic to such pathogens.