公开(公告)号：US20050285288A1

公开(公告)日：2005-12-29

申请号：US11210392

申请日：2005-08-24

申请人： Madhu Ayyagari ,  Mahendra Nandu ,  Erik Indra ,  Alan Braun

发明人： Madhu Ayyagari ,  Mahendra Nandu ,  Erik Indra ,  Alan Braun

IPC分类号： B29C37/00 ,  B29C71/00 ,  B29D11/00 ,  B29D11/02

CPC分类号： B29C71/0009 ,  B29C37/0003 ,  B29C71/009 ,  B29C2071/0027 ,  B29C2071/0054 ,  B29D11/00067 ,  B29D11/00125 ,  B29D11/023 ,  B29L2011/0016 ,  B29L2011/0041 ,  Y10S134/901

摘要： A method of extracting residual materials from a polymeric, ophthalmic biomedical device, such as a contact lens, by using a mixture comprised of a primary solvent, such as carbon dioxide, and a polar co-solvent, such as isopropanol: By exposing the device to the co-solvent, the device expands. By pulsing or varying the concentration of the polar co-solvent in the mixture, the lens dimensions vary accordingly. When the lens is extracted while retained in a mold, the changes in lens dimensions causes the lens to be released from the mold.

摘要翻译： 通过使用由主要溶剂如二氧化碳和极性助溶剂如异丙醇组成的混合物从聚合物眼科生物医学装置（例如隐形眼镜）中提取残留物质的方法：通过使装置曝光 对共溶剂，器件扩大。 通过脉冲或改变混合物中极性助溶剂的浓度，透镜尺寸相应地变化。 当保持在模具中时提取透镜时，透镜尺寸的变化导致透镜从模具中释放出来。