IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0310190
(2007-08-14)
|
등록번호 |
US-8091568
(2012-01-10)
|
국제출원번호 |
PCT/US2007/017963
(2007-08-14)
|
§371/§102 date |
20090212
(20090212)
|
국제공개번호 |
WO2008/021349
(2008-02-21)
|
발명자
/ 주소 |
- Lane, Jennifer Dawn
- Smith, Dawn A.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
15 |
초록
▼
The present invention provides a lens care kit for disinfecting and cleaning contact lenses. The lens care kit of the invention allows customers to visually identify when their lenses are disinfected, clean, and ready to wear. The invention is relied on color change, due to temporally photo-bleachin
The present invention provides a lens care kit for disinfecting and cleaning contact lenses. The lens care kit of the invention allows customers to visually identify when their lenses are disinfected, clean, and ready to wear. The invention is relied on color change, due to temporally photo-bleaching of a colored lens care solution, to indicate the readiness of disinfection and cleaning of contact lenses.
대표청구항
▼
1. A lens care kit for cleaning and disinfecting contact lenses, comprising: a colored lens care solution including a water-soluble colorant; anda lens case, wherein the lens case comprises a singlet oxygen-generating agent and a light radiation source, wherein the singlet oxygen-generating agent ge
1. A lens care kit for cleaning and disinfecting contact lenses, comprising: a colored lens care solution including a water-soluble colorant; anda lens case, wherein the lens case comprises a singlet oxygen-generating agent and a light radiation source, wherein the singlet oxygen-generating agent generates singlet oxygen by light irradiation from the light irradiation source, wherein the singlet oxygen decomposes the colorant and renders the colored lens care solution colorless over a specific time period, thereby indicating that lenses under disinfecting and cleaning by the colored lens care solution are ready for use. 2. The lens care kit of claim 1, wherein the colorant is a dye which can be degraded by singlet oxygen within the specific time period. 3. The lens care kit of claim 2, wherein the dye is thionin or thionin modified by attaching a polyethylene glycol polymeric tail thereto. 4. The lens care kit of claim 1, wherein the singlet oxygen-generating agent is covalently attached to the solution-contacting surface of the lens case. 5. The lens care kit of claim 1, wherein the singlet oxygen-generating agent is covalently attached to the surface of a solid support which can be placed in the lens case in contact with the colored lens care solution. 6. The lens care kit of claim 5, wherein the solid support is a glasses, a resin, or a cloth tissue. 7. The lens care kit of claim 5, wherein the solid support has a pinwheel configuration within the confines of the lens case, wherein the pinwheel configuration is covered with a top that allows only a small piece of the pinwheel to be exposed to the lens care solution and light irradiation, wherein the top of the pinwheel is capable of being rotated to allow a fresh amount of singlet oxygen-generating agent to be exposed to the lens care solution and to light irradiation after a number of uses. 8. The lens care kit of claim 1, wherein the colored lens care solution is a multiple purpose solution which is free of hydrogen peroxide. 9. The lens care kit of claim 8, wherein the colored lens care solution comprises a hexamethylene biguanide polymer (PHMB). 10. The lens care kit of claim 9, wherein the hexamethylene biguanide polymer (PHMB) has a molecular weight at least 5 folder larger than that of the colorant. 11. The lens care kit of claim 10, wherein the PHMB is present in an amount of from about 0.01 to about 10 ppm. 12. The lens care kit of claim 1, wherein the colored lens care solution initially has a color of blue or green or purple, and wherein, at the end of the specific time period, the color of the colored lens care solution is substantially disappeared and becomes substantially clear. 13. The lens care kit of claim 1, wherein the colored lens care solution is obtained immediately prior to treating the lens in the lens case by mixing two solutions, one hydrogen peroxide containing solution free of colorant and the other solution containing the colorant and free of hydrogen peroxide. 14. A lens care kit for cleaning and disinfecting contact lenses, comprising: a colored lens care solution including a water-soluble colorant; anda lens case, wherein the lens case comprises a semiconductor-based photocatalyst, and a light radiation source, wherein the semiconductor-based photocatalyst generates hydroxyl radical and super oxide anion by light irradiation from the light irradiation source, wherein the hydroxyl radical and super oxide anion degrade the colorant and render the colored lens care solution colorless over a specific time period, thereby indicating that lenses under disinfecting and cleaning by the colored lens care solution are ready for use. 15. The lens care kit of claim 14, wherein the photocatalyst is TiO2. 16. The lens care kit of claim 14, wherein TiO2 is applied directly onto the solution-contacting surface of the lens case. 17. The lens care kit of claim 14, wherein TiO2 is applied onto the surface of a solid support which can be placed in the lens case in contact with the colored lens care solution. 18. The lens care kit of claim 17, wherein the solid support is a glasses, a resin, or a cloth tissue. 19. The lens care kit of claim 17, wherein the controlled time period is at least about 2 hour.
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