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公开(公告)号:US5674284A
公开(公告)日:1997-10-07
申请号:US605454
申请日:1996-02-26
CPC分类号: B29D11/023 , B29C43/02 , A61F2002/1683 , B29C2793/009 , B29C43/00 , B29K2033/12 , B29K2105/255 , B29K2995/0053 , B29K2995/0064 , B29L2011/0016 , Y10S425/808
摘要: The polymethyl methacrylate (PMMA) or copolymer thereof used to produce one-piece intraocular lenses is modified by a compression molding process to produce a much tougher material with improved mechanical properties. The process takes material in rod form and compresses into lens blanks. The molded lens blanks receive little or no compression strain in the center 4 mm optic zone. The compression is limited to the periphery region outside the center 4 mm zone. The intraocular lens fabricated from the molded lens blank exhibits greatly increased haptic mechanical properties and resistance to breakage.
摘要翻译: 用于制造单件眼内透镜的聚甲基丙烯酸甲酯(PMMA)或其共聚物通过压缩模塑方法进行改性,以产生具有改善的机械性能的更坚韧的材料。 该过程采用棒状材料并压缩成镜片坯料。 模制的透镜毛坯在中心4 mm光学区域几乎没有受到压缩应变。 压缩限制在中心4 mm区域外的周边区域。 由模制的透镜毛坯制造的眼内透镜显示出大大增加的触觉机械性能和抗断裂性。
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2.
公开(公告)号:US5895610A
公开(公告)日:1999-04-20
申请号:US940676
申请日:1997-09-30
CPC分类号: B29D11/023 , B29C43/02 , A61F2002/1683 , B29C2793/009 , B29C43/00 , B29K2033/12 , B29K2105/255 , B29K2995/0053 , B29K2995/0064 , B29L2011/0016 , Y10S425/808
摘要: The polymethyl methacrylate (PMMA) or copolymer thereof used to produce one-piece intraocular lenses is modified by a compression molding process to produce a much tougher material with improved mechanical properties. The process takes material in rod form and compresses into lens blanks. The molded lens blanks receive little or no compression strain in the center 4 mm optic zone. The compression is limited to the periphery region outside the center 4 mm zone. The intraocular lens fabricated from the molded lens blank exhibits greatly increased haptic mechanical properties and resistance to breakage.
摘要翻译: 用于制造单件眼内透镜的聚甲基丙烯酸甲酯(PMMA)或其共聚物通过压缩模塑方法进行改性,以产生具有改善的机械性能的更坚韧的材料。 该过程采用棒状材料并压缩成镜片坯料。 模制的透镜毛坯在中心4 mm光学区域几乎没有受到压缩应变。 压缩限制在中心4 mm区域外的周边区域。 由模制的透镜毛坯制造的眼内透镜显示出大大增加的触觉机械性能和抗断裂性。
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公开(公告)号:USD302299S
公开(公告)日:1989-07-18
申请号:US948284
申请日:1986-12-31
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