A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 2/10 (2006.01) A61L 2/08 (2006.01) A61L 12/02 (2006.01) A61L 12/06 (2006.01) G02C 13/00 (2006.01)
Patent
CA 2073773
2073773 9110455 PCTABS00006 Light-transmitting contact lenses (14) of Polymethylacrylate, Gas Permeable or Hydrogel materials may be immersed in an aqueous liquid medium (16) contained in a storing and processing device (10), all of which are substantially transparent to the ultraviolet radiation spectrum. The lenses (14), liquid medium (16) and storing device (10) are all irradiated with ultraviolet radiation in a preselected frequency range, while simultaneously being subjected to ultrasonic frequency vibrations to thereby cause asepticization of lenses (14), liquid medium (16) and storing device (10). The ultraviolet irradiation and ultrasonic vibrations are insufficient to cause detrimental molecular modification to the lenses (14) or storing device (10), but does cause the formation of oxidation free radicals in the liquid medium (16). The unique combination of ultraviolet irradiation and ultrasonic vibration in the presence of the liquid medium (16) containing oxidation free radicals cause rapid destruction of all microorganisms associated with the lenses (14), liquid medium (16) and storing device (10).
Gowling Lafleur Henderson Llp
U. V. Black Box Corporation
LandOfFree
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