Container for preventing microbial contamination after contact lens care solution is unsealed and preparation method thereof

Abstract

The invention discloses a container for preventing microbial contamination after a contact lens care solution is unsealed and a preparation method thereof. The container comprises an inner plug provided with a bacteria-removing filter membrane, which comprises an upper hollow cylindrical body, a lower hollow cylindrical body, the bacteria-removing filter membrane and a circular ring; the cylindrical body at the lower end extends into a bottle opening; the periphery of the cylindrical body at the lower end is closely connected with the inner wall of the bottle opening; the cylindrical body at the upper end protrudes from the bottle opening; the bacteria-removing filter membrane is fixed in the circular ring; the circular ring is fixed at the upper end of a cavity at the inner part of the cylindrical body at the lower end or in a cavity at the inner part of the cylindrical body at the upper end; the diameter of the bacteria-removing filter membrane in the circular ring is 10 mm to 16 mm, and the thickness is 0.1 mm to 0.2 mm; and the pore diameter of the bacteria-removing filter membrane (1) is 0.4 Mum to 0.5 Mum. After the contact lens care solution is unsealed, the container can effectively prevent microbial contamination caused by the contact of the care solution and the outside world in the use process of the care solution in the bottle. By applying the container disclosed by the invention, after a sample is unsealed and normally used in a simulated manner, the content of microbes in pure water in the bottle is 0 CFU (colony-forming unit) / ml on the seventh day.

Description

technical field [0001] The invention relates to a plastic bottle containing a contact lens care solution, in particular to a plastic bottle capable of preventing microbial contamination after the package of the contact lens care solution is unsealed and a preparation method thereof. Background technique [0002] Contact lens care solution is often used as a daily care product during the wearing process of contact lenses to clean, disinfect, rinse and preserve contact lenses. Usually unopened solutions are supplied sterile. At present, the contact lens care solutions used in the market are mainly in the form of plastic bottles, and the user squeezes the bottle body to make the care solution drip / shoot out from the bottle. However, when the extrusion force is removed, the outside air will be sucked back into the bottle, and repeated use will cause the nursing solution to be polluted by microorganisms in the air. What's more, the eye infection of the contact lens wearer may b...

AI Technical Summary

Problems solved by technology

After the blind hole of the existing plastic bottle containing contact lens care solution is punctured, during the process of extruding the contact lens care solution, the outside air will be repeatedly sucked into the bottle, so that the care solution is polluted by microorganisms in the air

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