Abstract:
A dispenser for holding multiple doses of fluids or other substances, and for dispensing the substances, has a vial, a flexible bladder received within the vial, and a variable volume storage chamber formed between the bladder and vial. A filling valve is coupled in fluid communication with the storage chamber and defines (1) a normally closed, fluid-tight position hermetically sealing the storage chamber from the ambient atmosphere, and (2) an open position allowing the passage of fluid through the valve both to evacuate the storage chamber and to introduce fluid through the valve to fill the storage chamber. A pump is coupled in fluid communication with the storage chamber for pumping fluids out of the storage chamber. A dispensing valve is coupled in fluid communication with the pump and defines (1) a normally closed, fluid-tight position preventing the passage of fluid out of the dispenser, and (2) an open position for dispensing pumped fluid therethrough. The sealed, empty dispenser is sterilized, such as by applying gamma radiation thereto. Then, the sterilized, sealed, empty dispenser is filled with fluid by engaging the filling valve with an evacuating/dispensing member to evacuate the storage chamber, and by introducing fluid from the filling member through the open filling valve and into the storage chamber. The filling member is withdrawn from the valve, and a spring moves the valve to a closed position to hermetically seal the fluid within the dispenser.
Abstract:
A syringe is provided for the delivery of controlled, metered amounts of any of numerous different substances to humans or animals, such as medicaments, pharmaceuticals, cosmetics, and food products, or to deliver materials which may react upon exposure to air, such as glue. The syringes include a body and a plunger. Means are provided in the syringe body and the plunger to effect controlled movement of the plunger into the syringe to permit delivery of a pre-determined amount of the substance contained in the syringe. A one-way valve is provided at the dispensing tip of the syringe to hermetically seal the portion of the syringe containing the substance to be dispensed.
Abstract:
A dispenser has a housing, and a variable-volume storage chamber formed within the housing and defining a substantially fluid-tight seal between the chamber and exterior of the housing for storing a substance to be dispensed. A piston is mounted within the housing, and a one-way valve is mounted within the housing and coupled in fluid communication with the variable-volume storage chamber. A compression chamber is coupled in fluid communication between the piston and one-way valve, and at least one of the piston and valve is manually depressible relative to the other between (i) a first position in which the piston is located at least partially outside of the compression chamber for permitting substance to flow from the variable-volume storage chamber into the compression chamber, and (ii) a second position in which the piston is located at least partially within the compression chamber for pressurizing substance within the compression chamber above a valve opening pressuring and, in turn, dispensing substance through the one-way valve and out of the dispenser.
Abstract:
A contact lens transfer device for transferring a contact lens from a storage container to a contact lens applicator has a body and a contact lens holder movably mounted on the body. The contact lens holder defines a contact lens support surface, a fluid-flow aperture extending through the contact lens support surface, and a chamber coupled in fluid communication with the fluid-flow aperture. A contact lens is removably receivable on the lens support surface, and the fluid-flow aperture is coupled in fluid communication with an interface between the contact lens and lens support surface for introducing fluid from the chamber, through the fluid-flow aperture and into the interface to release the lens from the lens support surface.
Abstract:
A contact lens applicator has an elongated housing defining an interior chamber for storing contact lenses, first and second triggers mounted on the housing, a depressor for depressing each eyelid where the depressor is drivingly coupled to the triggers, a pair of opposing wing-shaped members projecting outwardly from opposite sides of the rollers for providing a support surface for facilitating locating the apparatus over the eye, and a pusher assembly slidably mounted within the interior chamber for engaging a contact lens holder and applying a contact lens thereon to the eye when the triggers are actuated. The contact lens is stored in a cartridge within the elongated housing. The lens holder is movable within the cartridge upon actuating the pusher, and includes a predetermined amount of saline or other solution for defining appropriate conditions for storing the lens.
Abstract:
A resealable cap for a medicament vial has a base portion formed of vulcanized rubber or like material known for providing a stable environment for the medicament contained within the vial, and a resealable portion overlying the base portion. The resealable portion is made of low-density polyethylene or like material, and can be punctured by a needle or like injection member for dispensing medicament into the vial. Prior to filling, the cap is assembled to the vial and the cap/vial assembly is sterilized. Then, a needle is inserted through the cap and medicament is introduced through the needle and into the vial. Upon withdrawal of the needle, the penetrated region of the cap is fused by laser or direct heat sealing to hermetically seal the needle hole in the cap.