JP2011050415A5

JP2011050415A5 -

Info

Publication number: JP2011050415A5
Application number: JP2009199566A
Authority: JP
Filing date: 2009-08-31
Publication date: 2012-10-11
Anticipated expiration: 2029-08-31

Description

上記課題を解決するために、本発明は以下のような構成を備えることを特徴とする。
（１）光学部と、該光学部に一体的に形成され前記光学部を眼内で支持するための一対の支持部とを備える折り曲げ可能な眼内レンズにおいて、前記支持部は、前記光学部に連結される前記支持部の基端に形成され前記支持部全体を撓ませるための基点となる第１括れ部と，前記支持部の先端から所定の長さだけ撓ませるための基点とするために前記第１括れ部と前記支持部の先端との間に形成される第２括れ部と，を有することを特徴とする。
（２）（１）の眼内レンズにおいて、前記支持部は，前記先端から前記第２括れ部に至る先端部と、前記第２括れ部から前記第１括れ部に至る後端部とからなり、前記先端部の幅は前記後端部の幅よりも狭いことを特徴とする。
（３）（２）の眼内レンズにおいて、前記第２括れ部は，前記先端部が前記眼内レンズの押出方向と平行となるまで折り曲げられたときに、前記支持部の先端が前記光学部の中心部に届かない長さとなるように，前記支持部上に形成されることを特徴とする。
（４）（３）の眼内レンズにおいて、前記先端部は複数の括れ部を持つことを特徴とする。
In order to solve the above problems, the present invention is characterized by having the following configuration.
(1) In a foldable intraocular lens comprising an optical part and a pair of support parts that are integrally formed with the optical part and support the optical part in the eye, the support part is the optical part A first constricted portion formed at a base end of the support portion connected to the base portion and serving as a base point for bending the entire support portion; and a base point for bending a predetermined length from the tip of the support portion And a second constricted portion formed between the first constricted portion and the tip of the support portion.
(2) In the intraocular lens of (1), the support portion includes a front end portion extending from the front end to the second constricted portion and a rear end portion extending from the second constricted portion to the first constricted portion. The width of the front end is narrower than the width of the rear end.
(3) In the intraocular lens of (2), when the second constricted part is bent until the tip part is parallel to the pushing direction of the intraocular lens, the tip of the support part is the optical part. It is formed on the support part so as to have a length that does not reach the central part.
(4) In the intraocular lens of (3), the distal end portion has a plurality of constricted portions .

Claims

In a foldable intraocular lens comprising an optical part and a pair of support parts formed integrally with the optical part for supporting the optical part in the eye,
The support part is
A first constricted portion formed at a base end of the support portion connected to the optical portion and serving as a base point for bending the entire support portion;
A second constricted portion formed between the first constricted portion and the distal end of the support portion to serve as a base point for bending a predetermined length from the distal end of the support portion;
An intraocular lens comprising:

The intraocular lens of claim 1,
The support portion includes a tip portion extending from the tip to the second constricted portion;
A rear end portion from the second constricted portion to the first constricted portion,
An intraocular lens, wherein the width of the front end is narrower than the width of the rear end.

The intraocular lens of claim 2,
The second constricted portion has a length such that the tip of the support portion does not reach the center of the optical portion when the tip portion is bent until the tip portion is parallel to the extrusion direction of the intraocular lens . An intraocular lens formed on the support portion.

The intraocular lens of claim 3,
The intraocular lens, wherein the distal end portion has a plurality of constricted portions .