CN1409623A - 用于人工晶状体悬挂杆的套管 - Google Patents

用于人工晶状体悬挂杆的套管 Download PDF

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CN1409623A
CN1409623A CN00817032A CN00817032A CN1409623A CN 1409623 A CN1409623 A CN 1409623A CN 00817032 A CN00817032 A CN 00817032A CN 00817032 A CN00817032 A CN 00817032A CN 1409623 A CN1409623 A CN 1409623A
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J·斯图尔特·卡明
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    • A61F2/02—Prostheses implantable into the body
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    • A61F2/16—Intraocular lenses
    • A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
    • A61F2/1624—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside
    • A61F2/1629—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside for changing longitudinal position, i.e. along the visual axis when implanted
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    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
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    • A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
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    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/16—Intraocular lenses
    • A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
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    • A61F2002/1689—Intraocular lenses having supporting structure for lens, e.g. haptics having plate-haptics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
    • A61F2002/16901—Supporting structure conforms to shape of capsular bag
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2002/16965—Lens includes ultraviolet absorber
    • A61F2002/1699—Additional features not otherwise provided for

Abstract

在人工晶状体(10)的悬挂杆(16)上安置有套管(24)，用于改善悬挂杆(15)在眼睛的囊袋边缘中的固定状态。套管(24)最好能定位在悬挂杆(16)外面部分上并由悬挂杆扩大的端部(22)保持在此悬挂杆上。

Description

用于人工晶状体悬挂杆的套管
技术领域
在人眼内植入人工晶状体的过程中，尤其是在这里提供视觉调节时，重要的是把晶状体的悬挂杆(loop)固定在眼睛的囊袋边缘内，以便在睫状肌的作用下，保持光学部件(optic)正确而精密的运动。
正如在本技术领域中所知道的那样，安置在囊袋边缘中的悬挂杆、支撑物(haptic)等会被手术除去前囊袋的一部分后而产生的纤维化固定住。
然而嵌入在囊袋边缘中的悬挂杆和某些其他晶状体的部件可能，尽管很少有，失去一定的固定度，或发生从囊袋边缘中脱离的情况。其中可能出现这样问题的晶状体包含有著名类型的晶状体，在这些晶状体中，拱式的悬挂杆从光学部件沿相反方向伸出；还包含带有固定的按照本申请人的美国专利No.6,051,024的支撑物的人工晶状体。
本发明提供的套管元件用于把晶状体悬挂杆定位在眼睛的囊袋边缘中，因而来加强悬挂杆和套管在囊袋边缘中的啮合。
在本发明套管的一个典型或优选的应用中，套管被安置在这样的晶状体上，这种晶状体包含有一个光学部件，此光学部件具有由此伸出的两个支撑物，从每个支撑物伸出至少一个悬挂杆，这些悬挂杆具有扩大的端部，因此安置在悬挂杆上的管状套管是由扩大的端部而保持在上面。
附图简介
图1是晶状体的正视图，这个晶状体的支撑物具有沿相反方向伸出悬挂杆，而且悬挂杆上带有本发明的套管；
图2是悬挂杆的一个不完全透视图，这个悬挂杆上面带有套管，并被安置在囊袋边缘中；
图3是一个不完全的透视图，它表示一个其中具有狭缝并安置在悬挂杆上的套管；
图4是一个套管的透视图，这个套管上面带有用于加强在囊袋边缘部分中啮合的部件；
图5是本发明套管的透视图，它具有截头圆锥形内腔；
图6是放大的晶状体剖面图，这个晶状体带有从光学部件伸出并与囊袋边缘部分啮合的沿相反方向安置的拱式悬挂杆，而且此悬挂杆上具有套管；
图7表示了本发明的套管，此套管安置在从晶状体支撑物伸出的悬挂杆上；以及
图8是一个正视图，它表示出本发明的套管位于从环形支撑物的外边缘伸出的悬挂杆上。实施发明的最佳实例
参考附图的图1，可以与本发明套管一起使用的人工晶状体10的优选形式具有可弯曲的支撑物14，它们从光学部件12沿相反方向地横向伸出。支撑物是具有拱式外边缘的片状支撑物。当不受约束的时候，悬挂杆比所示构型弯曲得小一些。包含有光学部件、支撑物和悬挂杆的这个晶状体最好是由弹性的半刚性材料制成，例如硅树脂，丙烯酸脂(acrylid)或水凝胶。
众所周知，在这个技术领域中，例如图1的人工晶状体是在除去天然的晶状体后植入眼睛的囊袋中的。通常这个晶状体是经由人的晶状体前囊袋中切的圆开口并穿过角膜或巩膜中的小孔而插入囊袋中。
如图所示，在支撑物的外端部定位在囊袋的盲管中时，悬挂杆16被弹性地推动而紧靠着囊袋的盲管，悬挂杆在所示构型中是弯曲的。
球状突起22限定在悬挂杆的外端部上，用于通过与纤维组织的啮合来改善在囊袋边缘或盲管中的牢固性，此纤维组织是在手术除去前囊袋的中央部以后，在囊袋中产生的。
当晶状体定位在眼睛中时，本发明的套管24安置在每个悬挂杆16上的所示位置。套管最好是由较硬的材料，例如聚酰亚胺，聚甲基丙烯酸甲酯(PMMA)或尼龙制造，而悬挂杆典型地是由可弯曲的材料，例如硅树脂，丙烯酸脂(acrylic)或水凝胶构成，正如较早提到的。
套管可以通过不同的方法安装并安置在悬挂杆上。套管可以带有一条纵向狭缝(图3)，以便使套管能在定位的时候变形或张开。把套管安置在悬挂杆上的另一个方法是把悬挂杆安置在模子中的一个适当凹处，然后模制这个悬挂杆，以便在套管内伸长并穿过这个套管。另一个方法是制造水凝胶或丙烯酸材料的悬挂杆，在悬挂杆上滑动套管，然后使这个悬挂杆进行水解作用，于是就在其上面使这个悬挂杆和球状突起膨胀，于是未膨胀的悬挂杆就由扩大的球状突起保持在悬挂杆的端部。
参考图4和5，本发明的套管可以加入各种部件，以加强在囊袋中的固定性。这样的部件包含有26处表示的滚花、环形脊或环形物28和套管中的截头圆锥形内腔或通道30。
套管在悬挂杆上不妨碍悬挂杆的拉伸性，当套管啮合在悬挂杆周围并啮合在囊袋边缘中用于把晶状体固定在囊袋中时，悬挂杆的弹性使悬挂杆能够弯曲和伸长。在把晶状体插入眼睛的过程中，套管定位在悬挂杆的外面部分上，靠近悬挂杆端部的球状突起，在完成纤维化以后，就保持这样的定位状态。球状突起把套管保持在悬挂杆上，以防止悬挂杆从套管上滑落。正如所描述的，套管改善了在囊袋外边缘或盲管处的固定状态。为了帮助把邻接球状突起的套管保持在悬挂杆的端部上，可以在悬挂杆上限定一个小的凸出物32，如图7所示，凸出物的尺寸做得能在晶状体制造厂制成悬挂杆以后，让套管在其上方滑过。
图6到8表示了某些可以和本发明的套管一起使用的不同形状的晶状体。图6图示了一种本领域中熟知的晶状体，在这种晶状体中，悬挂杆从光学部件拱式地伸出并与眼睛的囊状边缘相啮合，邻接球状突起的本发明套管则位于悬挂杆的端部。图7表示了一个具有片状支撑物和拱式悬挂杆的晶状体，其凸出物32从支撑物的相应边缘部分伸出，横向伸过支撑物，而其套管则由球状突起保持在上面。图8表示了一个具有环形板状支撑物的晶状体，支撑物安置在光学部件的周围，还表示了几个由其上拱式伸出的悬挂杆，本发明的套管则由球状突起保持在这些悬挂杆的端部。
因此这里表示和描述的用于晶状体悬挂杆的套管实现了所寻求的全部目标和优点。考察了本说明书以及附图和权利要求以后，对业内人士来说，本主题发明的许多变更、修改、不同形式及其他应用便显而易见了。所有这些变更、修改、不同形式和其他应用都不脱离本发明的精神和范围，它们都被认为是由本发明所包括，而本发明则仅仅是由随后的权利要求所限制的。

Claims (28)

1.人工晶状体，它包含有：
一个光学部件，
至少两个可弯曲的固定悬挂杆，此固定悬挂杆与光学部件相连并伸出啮合到眼睛囊袋的外边缘中，
至少一个该悬挂杆具有一个扩大的外端部，和一个大致上管状的套管，这个套管安置在该至少一个悬挂杆周围，用于把它啮合到囊袋的外边缘中，
2.按照权利要求1所述的晶状体，其特征在于：至少一个悬挂杆的扩大的端部包含有一个球状突起。
3.按照权利要求1所述的晶状体，其特征在于：该套管是由比该至少一个的悬挂杆的材料硬的材料做成的。
4.按照权利要求1所述的晶状体，其特征在于：在视觉调节期间，该悬挂杆是可拉伸的，而且可相对于套管滑动。
5.按照权利要求1所述的晶状体，其特征在于：此套管沿其长度具有一条狭缝，用作把套管安置在该悬挂杆周围的开口。
6.按照权利要求1所述的晶状体，其特征在于：该管状套管具有至少一个凸缘，用于加强在囊袋边缘中的固定。
7.按照权利要求1所述的晶状体，其特征在于：该套管具有锯齿状的表面。
8.按照权利要求1所述的晶状体，其特征在于：此套管具有一个截头圆锥形的内腔。
9.按照权利要求1所述的晶状体，其特征在于：此套管安置在悬挂杆上，而此悬挂杆把套管定位在模子中的一个凹处，在这里悬挂杆被模制而通过该套管。
10.按照权利要求1所述的晶状体，其特征在于：该悬挂杆和扩大的端部是由(a)水凝胶，(b)丙烯酸脂，(c)一种光学材料，(d)硅树脂中的一种做成。
11.按照权利要求10所述晶状体，其特征在于：此套管安置在悬挂杆的周围，而悬挂杆和球状突起的材料因水合作用而膨胀，因此套管由扩大的球状突起保持在悬挂杆上。
12.人工晶状体，它包含有：
一个光学部件，它具有由此光学部件伸出的两个支撑物，
至少一个从每个支撑物伸出的悬挂杆，
至少一个悬挂杆具有扩大的端部，和一个大致上管状的套管，此套管安置在该至少一个悬挂杆周围，此套管由该扩大的端部保持在悬挂杆上。
13.按照权利要求12所述的晶状体，其特征在于：该支撑物是从该光学部件沿相反方向伸出的片状支撑物。
14.按照权利要求13所述的晶状体，其特征在于：每个支撑物具有至少一个从此支撑物伸出的悬挂杆，而且悬挂杆上具有一个管状套管。
15.按照权利要求13所述的晶状体，其特征在于：
每个支撑物都具有从其外端部沿相反方向伸出的悬挂杆，以及
每个该悬挂杆上都具有一个套管，此套管由一扩大的端部保持在该悬挂杆上。
16.按照权利要求12所述的晶状体，其特征在于：该管状套管是由比悬挂杆的材料更硬的材料制造的。
17.按照权利要求14所述的晶状体，其特征在于：该悬挂杆从支撑物的边缘部分向外伸出。
18.按照权利要求12所述的晶状体，其特征在于：该至少一个的悬挂杆是可弯曲的。
19.按照权利要求14所述的晶状体，其特征在于：该悬挂杆是可弯曲的。
20.按照权利要求14所述的晶状体，其特征在于：在视觉调节期间，该悬挂杆是可拉伸的，而且相对于各自的套管是可以滑动的。
21.按照权利要求1所述的晶状体，其特征在于：该套管沿其长度具有一条狭缝，用作把该套管安置在悬挂杆的周围的开口。
22.按照权利要求14所述的晶状体，其特征在于：该套管沿它们的长度具有多个狭缝，用于把该套管安置在悬挂杆的周围的开口。
23.按照权利要求14所述的晶状体，其特征在于：此套管具有各自的凸缘，用于加强在囊袋边缘中的固定。
24.按照权利要求14所述的晶状体，其特征在于：此套管具有一个锯齿状的表面。
25.按照权利要求14所述的晶状体，其特征在于：把套管安置在模子的凹处，在这里悬挂杆被模制穿过此套管，用这种办法把套管安置在各自的悬挂杆上，
26.按照权利要求1所述的晶状体，其特征在于：在该悬挂杆上的适当位置限定有凸出物，以便保持此套管靠近悬挂杆扩大的外端部。
27.按照权利要求2所述的晶状体，其特征在于：在该悬挂杆上的适当位置限定有凸出物，以便保持该套管靠近球状突起。
28.按照权利要求4所述的晶状体，其特征在于：在该悬挂杆上的适当位置限定有凸出物，以便保持该套管靠近悬挂杆扩大的外端部。
CN00817032A 1999-10-15 2000-10-12 用于人工晶状体悬挂杆的套管 Pending CN1409623A (zh)

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