Contact lens treatment apparatus

• US 5,657,506 A
• Filed: 03/02/1995
• Issued: 08/19/1997
• Est. Priority Date: 01/15/1993
• Status: Expired due to Term

• Current Assignee: Isoclear Incorporated
• Original Assignee: Isoclear Incorporated
• Inventors: Pankow, Mark L.
• Primary Examiner(s): Spisich, Mark
• Application Number:
  US08/398,057
• Time in Patent Office: 901 Days
• Field of Search: 15/104.92-104.94, 15/208, 15/209.1, 15/214, 15/244.1, 15/244.3, 15/244.4, 206/5.1
• US Class Current: 15/104.92
• CPC Class Codes: A45C 11/005 Contact lens cases A45C11/046 takes precedence
• CPC Class Codes: A61L 12/02 using physical phenomena, e.g. electricity, ultrasonics or ultrafiltration
• CPC Class Codes: A61L 12/086 Container, accessories or devices therefor
• CPC Class Codes: B08B 11/02 Devices for holding articles during cleaning B08B9/42 takes precedence
• CPC Class Codes: B08B 7/0028 by adhesive surfaces
• CPC Class Codes: C11D 2111/44 Multi-step processes
• CPC Class Codes: C11D 3/0078 Compositions for cleaning contact lenses, spectacles or lenses
• CPC Class Codes: G02C 13/008 Devices specially adapted for cleaning contact lenses

Abstract

A self-contained single-use apparatus for cleaning and hydrating a pair of contact lenses comprises a housing including a pair of hollow snap-lock lens containers in which opposed layers of a deformable relatively hydrophobic reactive material having surfaces arranged for non-abrasive contiguous wetted contact with the optical surfaces of the lenses when the lenses are enclosed in the housings. While in contact with the optical surfaces contaminants in the lenses are attracted to the contacting surfaces of the reactive layers. Upon removal of the lenses the attracted contaminants remain on the contacting surfaces and are disposed of with the housing. The container contains sufficient absorbed liquid for maintaining the lens in a hydrated condition while being treated in the container during the treatment process.

Claims

1. An apparatus for cleaning a contact lens having an optical surface and contaminated with contaminant matter, comprising:

a layer of porous reactive material hydrophobic relative to the lens defining a non-abrasive reactive surface operative when in wetted contact with the optical surface to attract contaminant matter from the lens;

said layer of reactive material being wetted with an ophthalmologically compatible liquid; and

housing means for maintaining said reactive surface in stationary contiguous wetted engagement with the optical surface whereby contaminants migrate from the lens to said reactive layer.

2. A lens cleaning apparatus as defined in claim 1 wherein the pores of said porous material generally range in size from 0.1 to 0.5 microns.

3. A lens cleaning apparatus as defined in claim 1 wherein said reactive layer is thin and formable to provide a reactive surface which closely corresponds to the optical surface of the lens, and wherein the apparatus further includes a compressible layer held in contact with said reactive layer by said housing means for pressing said reactive surface into contiguous contact with the optical surface of the lens.

4. A lens cleaning apparatus as defined in claim 3 wherein said compressible layer is porous and liquid absorptive and wetted with an ophthalmologically compatible liquid for wetting the lens.

5. A lens cleaning apparatus as defined in claim 4 wherein said reactive layer covers only a portion of said compressible layer to provide for fluid communication between said compressible layer and the contact lens.

6. A lens cleaning apparatus as defined in claim 4 wherein said compressible layer is formed from an inert foraminous material.

7. An apparatus for cleaning a contact lens having first and second opposed optical surfaces and contaminated with contaminant matter, comprising:

a first layer of porous reactive material hydrophobic relative to the lens and defining a first non-abrasive reactive surface operative when in wetted contact with the first optical surface to attract contaminant matter from the lens;

a second layer of porous reactive material hydrophobic relative to the lens and defining a second non-abrasive reactive surface operative when in wetted contact with the second optical surface to attract contaminant matter from the lens;

said layers of reactive material each being wetted with an ophthalmologically compatible liquid; and

housing means for maintaining said reactive surfaces in stationary contiguous wetted engagement with respective ones of the optical surfaces whereby contaminants migrate from the lens to the reactive layers.

8. A lens cleaning apparatus as defined in claim 7 wherein the pores of said porous material generally range in size from 0.1 to 0.5 microns.

9. A lens cleaning apparatus as defined in claim 7 wherein said reactive layers are thin and formable to provide respective reactive surfaces which closely correspond to said first and second optical surfaces of the lens, and wherein the apparatus further includes a pair of compressible layers held in contact with respective ones of said reactive layers by said housing means for pressing said reactive surfaces into contiguous contact with said first and second optical surfaces.

10. A lens cleaning apparatus as defined in claim 9 herein said compressible layers are porous and liquid absorptive and wetted with an ophthalmologically compatible liquid for wetting the lens.

11. A lens cleaning apparatus as defined in claim 10 wherein said reactive layers each cover only a portion of their respective compressible layer to provide for fluid communication between said compressible layer and the contact lens.

12. A lens cleaning apparatus as defined in claim 10 wherein said compressible layers are each formed from an inert foraminous material.

13. An apparatus for cleaning a contact lens having first and second opposed optical surfaces and contaminated with contaminant matter, comprising:

a housing having first and second housing sections joinable to form a chamber for receiving the lens;

a first layer of porous reactive material hydrophobic relative to the lens and contained within said first housing section and defining a first non-abrasive reactive surface operative when in wetted contact with the first optical surface to attract contaminant matter from the lens;

a second layer of porous reactive material hydrophobic relative to the lens and contained within said second housing section and defining a second non-abrasive reactive surface operative when in wetted contact with the second optical surface to attract contaminant matter from the lens;

said layers of reactive material being wetted with an ophthalmologically compatible liquid; and

said reactive surfaces being arranged within said chamber for generally stationary contiguous wetted engagement with respective ones of the optical surfaces of the lens when the lens is contained within the chamber.

14. A lens cleaning apparatus as defined in claim 13 wherein the pores of said porous material generally range in size from 0.1 to 0.5 microns.

15. A lens cleaning apparatus as defined in claim 13 wherein said reactive layers are thin and generally flexible and formable to provide respective reactive surfaces which closely correspond to said first and second optical surfaces of the lens, and wherein the apparatus further includes a pair of layers of compressible material arranged within respective ones of said housing sections in contact with respective ones of said reactive layers for pressing said reactive surfaces into contiguous contact with said first and second optical surfaces.

16. A lens cleaning apparatus as defined in claim 15 wherein said compressible layers are porous and liquid absorptive and wetted with an ophthalmologically compatible liquid for wetting said lens.

17. A lens cleaning apparatus as defined in claim 16 wherein said reactive layers each cover only a portion of their associated compressible layer to provide for fluid communication between said compressible layer and the contact lens.

18. A lens cleaning apparatus as defined in claim 16 wherein said compressible layers are formed from an inert foraminous material.

19. An apparatus for cleaning a contact lens having first and second opposed optical surfaces and contaminated with contaminant matter, comprising:

a housing defining a container having first and second closable sections defining an interior chamber for receiving the lens;

a first layer of porous reactive material hydrophobic relative to the lens and defining a first non-abrasive reactive surface operative when in wetted contact with the first optical surface to attract contaminant matter from the lens;

a second layer of porous reactive material hydrophobic relative to the lens and defining a second non-abrasive reactive surface operative when in wetted contact with the second optical surface to attract contaminant matter from the lens; and

said reactive layers being thin and flexible and conformable to respective ones of said optical surfaces, and being arranged within said chamber to contact respective ones of said optical surfaces when the lens is contained within said container;

a first compressible layer within said first container section wetted with ophthalmologically-compatible solution and engaging said first reactive layer;

a second compressible layer within said second container section wetted with an ophthalmologically-compatible solution and engaging said second reactive layer; and

said reactive layers being pressed into engagement with respective ones of the optical surfaces by said compressible layers upon closing of said container sections to establish a contiguous wetted contact between said reactive surfaces and said optical surfaces of the lens.

20. A lens cleaning apparatus as defined in claim 19 wherein the pores of said porous material generally range in size from 0.1 to 0.5 microns.

21. A lens cleaning apparatus as defined in claim 19 wherein said reactive layers each cover only a portion of their associated compressible layer to provide for fluid communication between said compressible layer and the contact lens.

22. An apparatus for cleaning a contact lens having first and second opposed optical surfaces and contaminated with contaminant matter, comprising:

a first container section defining a first open-ended recess;

a second container section defining a second open-ended recess;

said container sections being joinable whereby said recesses establish when said sections are joined a liquid sealed chamber for receiving the lens;

a first layer of reactive material defining a first non-abrasive reactive surface operative when in wetted contact with the first optical surface to attract contaminant matter from the lens;

a second layer of reactive material defining a second non-abrasive reactive surface operative when in wetted contact with the second optical surface to attract contaminant matter from the lens;

said reactive layers being conformable to respective ones of said optical surfaces and being arranged within respective ones of said container sections to engage respective ones of the optical surfaces when the lens is positioned within said chamber;

a first compressible layer within said first container section wetted with ophthalmologically-compatible solution and engaging said first reactive layer;

a second compressible layer within said second container section wetted with an ophthalmologically-compatible solution and engaging said second reactive layer; and

said reactive layers being compressed by said compressible layers upon closing said container sections to establish a wetted contiguous contact between said reactive surfaces and said optical surfaces of the lens.

23. A lens cleaning apparatus as defined in claim 22 wherein said reactive layers are each formed of a porous material hydrophobic relative to the contact lens.

24. A lens cleaning apparatus as defined in claim 23 wherein the pores of said porous material generally range in size from 0.1 to 0.5 microns.

25. A lens cleaning apparatus as defined in claim 22 wherein said reactive layers each cover only a portion of their associated compressible layer to provide for fluid communication between said compressible layer and the contact lens.

26. A lens cleaning apparatus as defined in claim 22 wherein said first container section includes a ridge around the open end of said first recess, and said second container section includes a channel around the open end of said second recess, said ridge and channel being arranged to provide a liquid-sealed engagement between said container sections when said sections are joined.

27. A lens cleaning apparatus as defined in claim 22 wherein said container sections are joined by an integrally formed living hinge portion of said chamber.