Intraocular ring assembly and artificial lens kit
OwnerToshiyuki Nagamotoinventor
Life of this patent
Estimating the term…
Abstract
An intraocular ring assembly and an artificial lens kit, both of which are usable for implantation in a lens capsule or capsular bag of natural eye. The intraocular ring assembly includes a first ring element having recessions therein, a second ring element, and a biasing element provided between the first and second ring elements. The artificial lens kit comprises such intraocular ring assembly and an intraocular lens to be movably supported in the recessions of the ring assembly in a coaxial relation therewith. A guide element may be provided to assist in rectilinear coaxial movement of the first and second ring elements.
Claims33
An intraocular ring assembly comprising:
- a first ring element having a center;
- a second ring element having a center;
- at least two recessions defined in said first ring element;
- and
- a biasing means provided between said first ring element and said second ring element;
- wherein said first and second ring elements are resiliently supported by said biasing means such that the center of said first ring element is in a coaxial relation with the center of said second ring element, and wherein said biasing means resiliently urges said first and second ring elements in a direction opposite to each other.
An intraocular ring assembly for implantation in a lens capsule of a natural lens in combination with an intraocular lens having an optic portion and a haptic means, in which the lens capsule has an anterior capsule, a posterior capsule and an equator defined between the anterior and posterior capsules, said intraocular ring assembly comprising:
- a first ring element having a center and a support means for supporting said haptic means of said intraocular lens therein;
- said first ring member having one side adapted to be contacted with said anterior capsule and another side opposite to said one side;
- a second ring element having a center and one side adapted to be contacted with said posterior capsule and another side opposite to said one side;
- and
- a biasing means provided between said first ring element and second ring element;
- wherein said first and second ring elements are resiliently supported by said biasing means such that the center of said first ring element is in a coaxial relation with the center of said second ring element, and wherein said biasing means resiliently urges the first ring element in a direction to said anterior capsule, while resiliently urging said second ring element in a direction to said anterior capsule.
An artificial lens kit for implantation in a lens capsule of natural eye in which the lens capsule has an equator, comprising:
- an intraocular lens having an optic portion and a haptic means provided on a peripheral end of said optic portion;
- said haptic means being adapted to contact an inner surface region of said lens capsule corresponding to said equator;
- and
- an intraocular ring assembly in which said intraocular lens is supported in a coaxial relation therewith, said intraocular ring assembly including:
- a first ring element having a center and a support means for supporting said haptic means of said intraocular lens therein;
- a second ring element having a center;
- and
- a biasing means provided between said first ring element and said second ring element, wherein said first and second ring elements are resiliently urged by said biasing means in a direction opposite to each other, such that the center of said first ring element is in a coaxial relation with the center of said second ring element.
Dependencies are inferred from the claim text.