Chemical apparatus and process disinfecting – deodorizing – preser – Physical type apparatus – Apparatus for treating solid article or material with fluid...
Patent
1997-10-17
1999-11-30
McKane, Elizabeth
Chemical apparatus and process disinfecting, deodorizing, preser
Physical type apparatus
Apparatus for treating solid article or material with fluid...
422292, 206 51, 134901, A61L 218, B65D 8122
Patent
active
059937556
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a disinfection system for disinfection of contact lenses and comprising a sealed disposable package containing a suitable amount of disinfection liquid to disinfect a set of contact lenses.
Users of contact lenses are aware that, at best, contact lenses are to be cleaned and disinfected daily to avoid trouble in use.
In practice, disinfection of contact lenses takes place in that a disinfection liquid from a container is poured into a specially designed lens case in which the cleaning process takes place. The lens case consists of a lens holder with a lens basket usually secured to the underside of the lens case lid as well as a container to receive disinfection
eutralization liquid onto which the lid may be screwed. When the contact lenses have been placed in the lens baskets, the lens case lid is screwed on the case, whereby the lens baskets with the contact lenses are immersed into the disinfection liquid in the container and are thereby cleaned.
Various types of liquids are used for cleaning contact lenses, depending on the cleaning system used by the user. One of the systems comprises the use of two liquids, the method comprising first immersing the lenses into hydrogen peroxide (H.sub.2 O.sub.2), which is a very strong disinfecting and cleaning liquid. After the disinfection, the lenses are immersed into a neutralization liquid, and then the contact lenses are ready for use. Sometimes the users of this system forget how far they have gone in the cleaning process, and since the neutralization liquid has the same color as the hydrogen peroxide solution, the user may be easily mistaken or his memory may be at fault, and consequently there have been several cases where the user, believing that the lenses had been neutralized, has then inserted them in the eye directly from the hydrogen peroxide solution, which is very painful.
To avoid such unfortunate actions, DK Patent No. 168 746 B1 proposes a cleaning system where the contact lenses are immersed into a two-compartment case with hydrogen peroxide, but where the case contains a third compartment which communicates with the two compartments and in which a soluble tablet containing a neutralization agent (catalase) is placed. The gradual dissolution of the tablet neutralizes the hydrogen peroxide solution so that the contact lenses will be disinfected and neutralized when the tablet has been dissolved completely after a certain period of time. However, a drawback of this disinfection system is that sometimes the user forgets to place the tablet in the case, so that the contact lenses are inserted without having been neutralized. Another risk is that the user inserts the contact lenses before the tablet has been dissolved completely and the hydrogen peroxide solution has not been neutralized completely.
Today, all-in-one liquids have been developed for simultaneous cleaning, disinfection and insertion of contact lenses, the idea being to take the lens directly from the disinfection liquid and to insert it in the eye. The disinfection agent in these liquids is relatively weak, since otherwise, it would disturb the environment of the eye and cause allergic reactions, because the lenses are not neutralized before being inserted. The all-in-one liquids are supplied in containers/bottles containing up to 360 ml, sufficient for two months, consumption, if the lenses are disinfected daily. In practice, 360 ml are frequently enough for more than two months, as the user saves or just uses the contact lenses at intervals. Health authorities have generally recommended smaller container sizes, corresponding to one month's consumption, it being desired to reduce the risk of bacterial growth in the container. Frequently, the container is stored in bathrooms with many bacteria and fungi, and the users frequently forget to screw the lid onto the container after use. An American study (Donzis) has shown bacterial growth in 11-66% of the containers.
The bacterial growth in the containers reduces the effect of the disinfe
REFERENCES:
patent: 4429786 (1984-02-01), Hucal
patent: 4852592 (1989-08-01), DiGangi et al.
patent: 5053208 (1991-10-01), Seamons et al.
patent: 5164166 (1992-11-01), Stepanski et al.
patent: 5167323 (1992-12-01), Ohta et al.
patent: 5181604 (1993-01-01), Ohta et al.
patent: 5275784 (1994-01-01), Perlaky
patent: 5375698 (1994-12-01), Ewart et al.
patent: 5396984 (1995-03-01), Wanders
patent: 5467868 (1995-11-01), Abrams et al.
patent: 5598919 (1997-02-01), Taylor
patent: 5605667 (1997-02-01), Powell
patent: 5609246 (1997-03-01), Borghorst et al.
patent: 5657506 (1997-08-01), Pankow
McKane Elizabeth
Moazzam Fariborz
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