Contact lens cleaning system with insulation

• US 9,625,744 B2
• Filed: 10/31/2014
• Issued: 04/18/2017
• Est. Priority Date: 10/31/2013
• Status: Active Grant

• Current Assignee: NovaBay Pharmaceuticals, Inc.
• Original Assignee: NovaBay Pharmaceuticals, Inc.
• Inventors: Francavilla, Charles, Stroman, David
• Primary Examiner(s): Yoo, Regina M
• Application Number:
  US14/530,528
• Publication Number:
  US 20150118108A1
• Time in Patent Office: 900 Days
• CPC Class Codes: G02C 13/008 Devices specially adapted for cleaning contact lenses

Abstract

The present invention relates generally to systems and methods for cleaning and disinfecting contact lenses. In various respects, the invention is directed to an insulated system that reduces heat loss from catalyzed neutralization of a disinfecting solution resulting in an increased temperature of the disinfection solution during the disinfection process and neutralization of the disinfection solution. The increased temperature increases the kill rate (i.e., better reduction) of microorganisms present on the lenses, and increases the neutralization rate of the disinfection solution. Increase of the kill rate allows better reduction of microorganisms resistant to elimination using previous systems and methods, (e.g., Acanthamoeba cysts), and decreases the amount of time as compared to previous systems and methods necessary to reduce microorganisms to acceptable levels.

Claims

1. A thermally insulated contact lens disinfection system comprising:

a contact lens holder;

a vial adapted to contain the contact lens holder and a disinfection solution, wherein a catalyst is capable of neutralizing the disinfection solution; and

a thermal insulation layer surrounding and integral with the vial, whereby the thermal insulation layer reduces heat loss from the vial resulting in an increased temperature of the disinfection solution.

2. The thermally insulated contact lens disinfecting system according to claim 1, wherein the thermal insulation layer is a volume between an internal wall of the vial and an external wall of the vial.

3. The thermally insulated contact lens disinfecting system according to claim 2, wherein the volume is under a reduced pressure less than atmospheric pressure.

4. The thermally insulated contact lens disinfecting system according to claim 3 wherein the reduced pressure is between 0.0001 torr to 1 torr.

5. The thermally insulated contact lens disinfecting system according to claim 4, wherein the reduced pressure is between 0.1 torr-1 torr.

6. The thermally insulated contact lens disinfecting system according to claims 2, wherein the volume has a gas therein, wherein the gas has a thermal conductivity less than that of air.

7. The thermally insulated contact lens disinfecting system according to claim 6, wherein the gas is a mixture of gases.

8. The thermally insulated contact lens disinfecting system according to claim 2, wherein the volume has a mixture of gases therein, and the mixture of gases is air.

9. The thermally insulated contact lens disinfection system according to claim 2, wherein a thermally insulating material is sandwiched in the volume between the internal wall and the external wall.

10. The thermally insulated contact lens disinfecting system according to claim 9, wherein the thermally insulating material comprises one or more materials selected from the group consisting of neoprene rubber, silica aerogel, expanded polystyrene, polyurethane foam, fiberglass, and mineral wool.

11. The thermally insulated contact lens disinfection system according to claim 10, wherein the volume is under a reduced less than atmospheric pressure.

12. The thermally insulated contact lens disinfection system according to claim 11, wherein the volume is under a reduced pressure of about 0.0001torr to 1 torr.

13. The thermally insulated contact lens disinfection system according to claim 12, wherein the reduced pressure is about 0.1 torr-1 torr.

14. The thermally insulated contact lens disinfecting system according to claim 1, wherein the walls of the vial and the thermal insulation layer are the same and constructed from material have a thermal conductivity between 0.0001 W/mK-0.05 W/mK.

15. The thermally insulated contact lens disinfecting system according to claim 1, wherein the walls of the vial and the thermal insulation layer are the same and constructed from a thermally insulating material selected from the group consisting of polystyrene, polypropylene, poly(styrene butadiene), poly(acrylonitrile butadiene styrene), polypropylene, or poly(methyl methacrylate).

16. The thermally insulated contact lens disinfecting system according to claim 1 further comprising:

a sensor capable of providing temperature of the disinfection solution;

a processing device in communication with the sensor to receive the temperature data from the sensor; and

a display in communication with the processing device, the processing device being adapted to operate the display to provide disinfecting efficacy information based on the temperature data.