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公开(公告)号：EP0667754A4
公开(公告)日：1996-03-27
申请号：EP94922125
申请日：1994-07-08
IPC分类号： A61F2/16
CPC分类号： A61F2/16 , A61F2002/1681 , A61F2002/1683 , A61F2002/1686
摘要： An intraocular lens includes an optic body (12) and a pair of cantilevered spiral support members or haptics (20) extending outwardly from a peripheral portion (16) of the optic body. The haptics (20) are formed as portions of an elongate cylindrical body. A method of making the haptics is disclosed which allows the haptic to be of variable cross-sectional area, to be aplanar, and to include bends and curves, for example, without introducing undesirable molecular level changes or damage into the material of the haptic, which molecular level changes result in conventional haptics undesirably having a memory of their former shape and resulting dimensional changes (creep) of the conventional haptics over time.
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公开(公告)号：EP0667755A4
公开(公告)日：1996-03-27
申请号：EP94922529
申请日：1994-07-11
IPC分类号： A61F2/16
CPC分类号： A61F2/16 , A61F2002/1681 , A61F2002/1683 , A61F2002/16903 , A61F2002/16905
摘要： An intraocular lens (10) includes an optic body (12), and a pair of diametrically oppositely disposed elongate support haptics (14) extending radially outwardly and circumferentially on the optic body (12) to define a distal end foot portion (22) supportingly engageable with eye tissue and terminating in a distal (24) end for the haptic. In a first position for the haptics, the distal end foot portions (22) are spaced from the optic body (12). One of the optic body (12) and support haptic (14) defines releasable constraining features for engaging one of the optic body (12) or the other of the pair of haptics (14) to constrain the haptic (14) in a second position in which the distal end foot portion (22) thereof is adjacent to the optic body (12). In the second configuration of the intraocular lens (10) it is possible to pass the lens (10) into an eye via a surgical incision only slightly larger than the size of the optic body.
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公开(公告)号：EP0649294A4
公开(公告)日：1995-08-09
申请号：EP93916947
申请日：1993-07-02
IPC分类号： A61F2/16
CPC分类号： A61F2/1613 , A61F2002/1686
摘要： The present invention provides an improved intraocular lens haptic (14) having an enlarged anchoring head (16) and an integrally formed support portion (20) extending therefrom. An oblong hole (18) is provided in the anchoring head. The haptic is punched from a sheet or ribbon of polyvinylidene fluoride film, and thereafter a lens optic (12) is cast around the anchoring head. During the casting operation, the lens optic material fills in the oblong hole (18) and all spaces around the anchoring head (16). Thus, the anchoring head (16) is firmly embedded in an outer periphery of the lens optic (12). Because the haptic is punched, it can be fabricated to have a variety of different anchoring head shapes and to have a variety of support portion shapes with varying numbers of bends at different bend angles. The orientation of the oblong hole (18) within the anchoring head (16) is also easily changed as is the orientation of the anchoring head (16) relative to the support portion (20), although both structures are integral and formed from a single sheet of material.
摘要翻译： 本发明提供了一种改进的人工晶状体触觉（14），其具有扩大的锚固头（16）和从其延伸的整体形成的支撑部分（20）。 在锚定头中提供长椭圆形孔（18）。 从聚偏二氟乙烯薄膜的薄片或带上冲压触觉器，然后将镜片光学器件（12）铸造在锚定头周围。 在铸造操作期间，透镜光学材料填充椭圆形孔（18）和锚固头（16）周围的所有空间。 因此，锚固头（16）牢固地嵌入在透镜镜片（12）的外周中。 由于触觉被打孔，它可以被制造成具有各种不同的锚头形状并且具有各种支撑部分形状，并且在不同的弯曲角度具有不同数量的弯曲。 椭圆形孔（18）在锚固头（16）内的取向也易于改变，如同锚固头（16）相对于支撑部分（20）的取向一样，尽管两个结构都是一体的并且由单个 材料。
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