EP 0567561 A4 19931201 - IMPROVED METHOD AND APPARATUS FOR THE STERILIZATION OF CONTACT LENSES UTILIZING MECHANICAL AGITATION
Title (en)
IMPROVED METHOD AND APPARATUS FOR THE STERILIZATION OF CONTACT LENSES UTILIZING MECHANICAL AGITATION
Publication
Application
Priority
US 64153291 A 19910115
Abstract (en)
[origin: WO9212737A1] Contact lenses are disinfected in a method including treating the contact lenses with an aqueous system of hydrogen peroxide in the presence of a hydrogen peroxide decomposition catalyst, and mechanically agitating the system in order to accelerate decomposition of the hydrogen peroxide. In a preferred embodiment of the method, the initial concentration of hydrogen peroxide in the system is approximately 3-4 % and the mechanical agitation promotes decomposition of the hydrogen peroxide to a concentration of 50 parts per million or less within 6 hours following initial contact of the catalyst with the system. The catalytic decomposition can be performed in a conventional lens sterilization vessel (12) which is secured to a drive mechanism (26) for repeated motion of the reaction vessel (12) in order to maintain continuous agitation of the sterilization system (10) therein.
IPC 1-7
IPC 8 full level
G02C 13/00 (2006.01); A61L 12/08 (2006.01); A61L 12/12 (2006.01)
CPC (source: EP KR)
A61L 2/00 (2013.01 - KR); A61L 12/086 (2013.01 - EP); A61L 12/128 (2013.01 - EP)
Citation (search report)
- [XP] EP 0436466 A2 19910710 - CIBA GEIGY AG [CH]
- See references of WO 9212737A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE
DOCDB simple family (publication)
WO 9212737 A1 19920806; AU 1203592 A 19920827; AU 655233 B2 19941208; CA 2100575 A1 19920806; EP 0567561 A1 19931103; EP 0567561 A4 19931201; JP H07500427 A 19950112; KR 930703026 A 19931129
DOCDB simple family (application)
US 9200271 W 19920115; AU 1203592 A 19920115; CA 2100575 A 19920115; EP 92904333 A 19920115; JP 50453692 A 19920115; KR 930702109 A 19930714