Laboratoires Pos

Joseph Spittler

Guy Andermann

Georges De Burlet

Michel Dietz

Dominique Mergel

Patricia Zilliox

A system and method for disinfecting contact lenses with a stabilized hydrogen peroxide solution and a separate neutralizing solution are described. Sodium stannate (a.k.a. sodium tin oxide) is utilized to stabilize the hydrogen peroxide, and sodium thiosulfate is utilized to neutralize the hydrogen peroxide. In addition to sodium thiosulfate, the neutralizing solution also contains a complexing agent capable of sequestering tin, such as EDTA or EGTA. The system and method provide improvements over prior hydrogen peroxide disinfection systems with respect to stability, predictability and rate of reaction.

Hydrogen peroxide disinfecting system for contact lenses

A tissue irrigating solution useful for irrigating animal tissue, such as ocular tissue and neuro tissue, during surgery, contains sodium, potassium, magnesium calcium chloride, and bicarbonate ions as well as dextrose, glutathione, and gamma-amino butyric acid (GABA) or functional analogue(s) of GABA, or a mixture of GABA and such analogue(s) in proportions consistent with the osmotic stability and continued metabolism of the tissue cells. The irrigating solution is prepared by mixing a first basic solution which provides the bicarbonate and a second acidic solution which provides the calcium, magnesium, dextrose and glutathione. The first and second solutions may be stored as stable, sterile solutions for extended periods of time and mixed within 24 hours of use.

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Kayersberg, France

Joseph Spittler