发明名称 |
Disposable ophthalmic/medical apparatus with timed color change indication |
摘要 |
A disposable ophthalmic or medical apparatus has a portion with a color changeable dye disposed thereon. The dye changes color after being exposed to oxygen for a controlled and predetermined period of time indicating that the apparatus should no longer be used. |
申请公布号 |
US8702237(B2) |
申请公布日期 |
2014.04.22 |
申请号 |
US201213688550 |
申请日期 |
2012.11.29 |
申请人 |
HEACOCK GREGORY LEE;CULHAM LOUISE ELLEN |
发明人 |
HEACOCK GREGORY LEE;CULHAM LOUISE ELLEN |
分类号 |
A61B3/00 |
主分类号 |
A61B3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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