摘要:
An intraocular lens insertion device (10) includes: an installation part (130) in which a deformable intraocular lens (1) is installed, the intraocular lens (1) including an optical part (2) and one or a plurality of support parts (3) extending outward from a periphery of the optical part (2); a movement part (301) that deforms the support part (3) of the intraocular lens (1) installed in the installation part (130) to move the support part (3) in a direction approaching the optical part (2); and a deformation suppression part (149, 159) that suppresses deformation of at least part of the support part (3) to be deformed by the movement part (301). With such a configuration, the intraocular lens can be suitably folded and ejected.
摘要:
An intraocular lens (IOL) injection system including: an IOL injection instrument (1a); and a holder (1b) to hold the IOL injection instrument, characterized in that the IOL injection instrument (1a) includes a lens storage part (100) to store an IOL (2), and the holder (1b) includes a restriction member (210) to restrict movement of the lens storage part (100).
摘要:
An intraocular lens injection instrument (10) for injecting an intraocular lens (IOL) (1, 1a) including an optical part (2) and support parts (3) into an eye by folding the IOL, comprises: a cylindrical body part (30) provided, at its front end, with an injection tubular part (20) configured to inject the IOL into the eye through an incision formed in the eye and including a setting part (22) in which the IOL is to be set; and a plunger (40, 40b-40e) for pushing the IOL out of the injection tubular part, the plunger being placed in the cylinder body part to be movable in an axial direction of the cylinder body part and having a tip portion (44), characterized by a part of an outer peripheral region of the plunger is formed with asperities (RF, RF2-RF6, G) to generate a predetermined frictional force by contact with the IOL, the predetermined frictional force being larger than a frictional force generated in the other part of the outer peripheral region of the plunger by contact with the IOL.
摘要:
A foldable intraocular lens (100; 200; 300) made of soft resin and comprises an optic part (110; 210; 310) and a pair of support parts (120; 220; 320) integrally formed with the optic part for supporting the optic part in an eye, wherein the support parts include: roots (122; R) formed to extend from a periphery of the optic part and located at positions opposite to each other with respect to a center of the optic part, each root radially extending by a predetermined length in a first direction; and arms (121) each extending in a curve from the corresponding root in a second direction; and a constricted portion (123; 325, 326) formed on a side of each arm facing the optic part to inwardly fold the arm by a predetermined length from a distal end (P) thereof, each support part being foldable at the constricted portion serving as a base point when the arm is subjected to stress during a push-out operation of the intraocular lens by use of an injector.
摘要:
An intraocular lens injector (50) for injecting a foldable intraocular lens (1) in an eye includes: an inserting portion that includes an outlet for the intraocular lens and is inserted through an incision made on the eye; a lens place portion where the intraocular lens is placed and which is formed on an opposite side to the outlet of the inserting portion, wherein the lens place portion can be closed through a hinge in a direction in which the intraocular lens is folded and the placed intraocular lens is folded by closing the lens place portion; and a first injecting passage that is formed in the lens place portion to inject lubricant into the lens place portion from an outside.
摘要:
An intraocular lens injection instrument for storing a soft intraocular lens (IOL) (100) including an optic part (101) made of acrylate resin having viscosity in a housing (10) of the instrument, and feeding out the IOL from the housing through a front end (2a) of the instrument by use of a push rod (6) of the instrument to inject the IOL into a patient's eye, is characterized in that the instrument comprises a storage part (70) provided with a pair of holding stands (73) arranged opposite to each other in a front-rear direction along a movement axis (L) of the push rod to hold the optic part, the holding stands including upper surfaces (71) on which the optic part is to be placed and having a predetermined height to place the optic part above and out of the movement axis during storage, the upper surfaces have a surface roughness of arithmetical mean roughness Ra 6.3 or less so that the optic part is allowed to adhere to the upper surfaces by the viscosity of the optic part and the surface roughness of the upper surfaces, and the storage part is vertically movably attached to the housing so that the optic part is placed above and out of the movement axis when the storage part is positioned upside and the optic part is placed on the movement axis when the storage part is positioned downside.