Source: https://patents.google.com/patent/JP4511533B2/en
Timestamp: 2019-12-11 15:39:48
Document Index: 699020725

Matched Legal Cases: ['art 12', 'art 14', 'art 12', 'art 11', 'art 12', 'art 14', 'art 12']

JP4511533B2 - Intraocular lens mechanism - Google Patents
Intraocular lens mechanism Download PDF
JP4511533B2
JP4511533B2 JP2006520158A JP2006520158A JP4511533B2 JP 4511533 B2 JP4511533 B2 JP 4511533B2 JP 2006520158 A JP2006520158 A JP 2006520158A JP 2006520158 A JP2006520158 A JP 2006520158A JP 4511533 B2 JP4511533 B2 JP 4511533B2
JP2006520158A
JP2007518447A (en
トラン トラン，ソン
2004-05-24 Application filed by アルコン，インコーポレイティド filed Critical アルコン，インコーポレイティド
2007-07-12 Publication of JP2007518447A publication Critical patent/JP2007518447A/en
2010-07-28 Publication of JP4511533B2 publication Critical patent/JP4511533B2/en
The present invention relates generally to the field of intraocular lenses (IOLs), and more particularly to multi-lens IOLs.
Most simply, the human eye functions to transmit light through an outer transparent part called the cornea and to visualize that light by focusing the image on the retina with a transparent lens. To do. And the quality of the focused image depends on factors such as the size and shape of the eyeball and the transparency of the cornea and lens.
By the way, when the transparency of the lens decreases due to aging or illness, light transmitted to the retina decreases, and thus visual acuity decreases. Such defects in the lens of the eyeball are medically known as cataracts. A common treatment for this disease is to remove the lens by surgery and replace the function of the lens with an intraocular lens (IOL).
In the United States of America, many of the lenses with cataracts are removed by a surgical procedure called phacoemulsification. In this procedure, an opening is opened in the anterior capsule and a thin cutting tip for phacoemulsification is inserted into the diseased lens and allowed to vibrate ultrasonically. Then, the oscillating cutting tip liquefies or emulsifies the crystalline lens so that the crystalline lens can be sucked out of the eyeball. Once removed, the diseased lens is replaced by an intraocular lens.
Prior to the present invention, the IOL was a single focus lens when it was necessary to remove the lens and replace it with an artificial IOL after cataracts or other illnesses were born. Most IOLs are sold with power increments of +/− 0.5 diopters, and the final power of the IOL depends on where the IOL is located along the optical axis. Because there is a constant increment in the IOL and a slight deviation in lens placement, visual acuity may be less than optimal. This condition occurs relatively rarely and generally not severe, but some patients eventually must use glasses or a pair of contact lenses to optimize their vision. I must. Here, when the refractive power of the intraocular lens is inappropriate, it is difficult to take out and replace the new lens because of the fiber formation of the support piece of the lens in the sac bag.
In the past, several adjustable IOLs have been proposed, but none are commercially available. For example, Patent Document 1 and Patent Document 2, which include contents incorporated herein by reference, are embedded in order to adjust the optical power of the multi-lens mechanism as a whole. It also proposes to use a second optical component that is attached to a pre-embedded artificial first optical component, or even a third optical component. In addition, Patent Document 3 and Patent Document 4 that include the contents included in the present specification by referring to here are described in IOLs that can be adjusted in a screw form in which the position of the optical component can be adjusted along the visual axis. Is disclosed. In addition, Patent Document 5 including the contents incorporated as the contents of the present specification by referring to here has an optical component and an outer ring, and the outer ring made of heat-shrinkable plastic is an optical component. A connected IOL is disclosed. The connection here is heated with a laser so as to adjust the refractive power of the IOL. In addition, Patent Document 6 and Patent Document 7 including the contents incorporated as the contents of the present specification by referring to here are lenses that are made of a polymer compound that expands or otherwise deforms. Disclosure. The lens is implanted or injected into a sac bag, and the refractive power of the optical component is adjusted by selective polymerization. Moreover, the patent document 8 which contains the content included as content of this specification by mentioning here is disclosing IOL which has a support piece provided with the reinforcing material which is easy to break. Here, once the reinforcing material is implanted in the eye, it is selectively cut or heated to a glass transition temperature (Tg) or higher by laser irradiation, thereby changing the rigidity of the support piece and the sac bag. The position of the IOL within is adjusted. Multi-lens designs and screw-adjustable designs are not optimized for reducing or eliminating posterior capsule opacity (PCO).
US Pat. No. 5,222,981 US Pat. No. 5,358,520 US Pat. No. 5,628,798 US Pat. No. 5,800,533 US Pat. No. 4,575,373 US Pat. No. 4,919,151 US Patent No. 5026783 US Pat. No. 5,571,177
Accordingly, there remains a need for a safe and stable intraocular lens mechanism that can adjust the refractive power of the lens.
The present invention improves upon the prior art by providing a two-part lens mechanism. The first part is an annular support part that is implanted in the sac bag after cataract surgery. The first part is not an optical part but has a set of support pieces for fixing the first part in the bag of the sac. The second part is an optical part having all the corrective refractive powers on the optics of the lens mechanism. The second part also has a set of tabs for securing the second part within the first part.
Accordingly, one object of the present invention is to provide a safe and biocompatible intraocular lens.
Another object of the present invention is to provide a safe and biocompatible intraocular lens that can be easily implanted in the posterior chamber.
Yet another object of the present invention is to provide a safe and biocompatible intraocular lens that is stable in the posterior chamber.
Yet another object of the present invention is to provide an adjustable lens mechanism that is safe and biocompatible.
Yet another object of the present invention is to provide a safe and biocompatible lens mechanism that can be implanted through a small incision.
Yet another object of the present invention is to provide a safe and biocompatible lens mechanism that can reduce the prevalence of PCO.
The foregoing and other advantages and objects of the invention will be apparent from the detailed description and claims set forth below.
As clearly shown in FIGS. 1 to 3, the lens mechanism 10 of the present invention generally comprises a first part or base part 12 and a second part or optical part 14. The base part 12 is generally annular in shape with a hollow central part 11 and has a plurality of integrally formed support pieces 16, preferably for example approximately 10.0 mm and 12.0 mm. It is made of a soft and flexible material, such as soft acrylic, with a suitable overall diameter in between and a suitable inner diameter, for example, between approximately 7.0 mm and 9.0 mm. The base part 12 may be made of a harder material than the optical part 14. Preferably, the base component 12 is configured to be pushed and inserted into the eyeball through an approximately 2.5 mm incision. The base component 12 may be formed to be opaque by matting the front surface and / or the rear surface of the base component 12 or by giving a texture. The base component 12 may also have a chromophore that blocks ultraviolet light and / or blue light, and such a chromophore is conventionally known. As clearly shown in FIG. 3, the posterior surface 13 of the base piece 12 preferably has a plurality of circumferentially extending posterior rings or posterior bands 18 with sharp, rectangular edges that abut the posterior capsule, Such sharp edges are widely known to help suppress PCO. As will be described later, the inner surface 23 of the base component 12 has a locking slot 20 into which the optical component 14 is fitted.
As clearly shown in FIGS. 4 and 5, the optical component 14 is generally circular with a lens 15 having a diameter D, for example, between approximately 4.0 mm and 7.0 mm. The optical component 14 is tapered from a relatively thick central portion toward a relatively thin or sharp edge, and the edge is between 7.5 mm and 8.5 mm in total length of the optical component 14. The optical component 14 is preferably made of a soft and flexible material such as soft acrylic. Further, the lens component 14 may have a chromophore that blocks ultraviolet light and / or blue light. Such a chromophore is conventionally known, but unlike the base component 12, the lens component 14 is optically optical. It is transparent.
As clearly shown in FIGS. 2 and 3, the lens mechanism 10 places the tab 22 of the lens component 14 in the wide portion 21 of the slot 20 and locks the tab 22 in the slot 20. Is assembled by rotating it slightly clockwise. In this assembly, the tab 22 can slide inwardly or outwardly in the slot 20 when pressure is applied to the support piece 16 and the base part 12, so that the sac bag contracts. In this case, the optical component 14 is not compressed or curved. Such a structure makes the lens component 14 very stable in the axial direction.
The above description is for illustration and explanation purposes. It will be apparent to those skilled in the art that changes and modifications may be made to the invention described above without departing from the scope or spirit of the invention.
It is an expansion perspective view of the lens mechanism by which the mechanism of this invention was assembled. It is an enlarged plan view of the assembled lens mechanism of the mechanism of the present invention. FIG. 3 is an enlarged cross-sectional view of the assembled lens mechanism of the mechanism of the present invention taken along line 3-3 of FIG. It is an enlarged plan view of the second part of the lens mechanism of the mechanism of the present invention. FIG. 5 is an enlarged cross-sectional view of a second part of the lens mechanism of the mechanism of the present invention taken along line 5-5 of FIG.
a) an annular base part having a hollow central part, a plurality of support pieces and a plurality of slots; b) a size that fits and locks in the slot by rotating in the slot of the base part; And an optical component having a plurality of tabs integrally formed at intervals, and c) a sharp rectangular edge that abuts the posterior capsule, and is coaxial with the optical component on the rear surface of the base component. An intraocular lens mechanism comprising a plurality of rear rings extending in the circumferential direction and formed integrally with the base part .
The intraocular lens mechanism according to claim 1, wherein the base part is opaque.
The intraocular lens mechanism according to claim 1, wherein the base part is harder than the optical part.
an optical component having an opaque annular base component having a hollow central portion, a plurality of support pieces and a plurality of slots, and b) a plurality of integrally formed tabs, the optical component being An optical component that is soft compared to the base part and is sized and fitted into the slot by rotating the tab in the slot of the base part and spaced apart; and c) after An intraocular eye having a sharp rectangular edge abutting against the sac and having a plurality of circumferentially extending rear rings coaxial with the optical component and integrally formed with the optical component on the rear surface of the basic component Lens mechanism.
JP2006520158A 2003-07-14 2004-05-24 Intraocular lens mechanism Expired - Fee Related JP4511533B2 (en)
JP2007518447A JP2007518447A (en) 2007-07-12
JP4511533B2 true JP4511533B2 (en) 2010-07-28
JP2006520158A Expired - Fee Related JP4511533B2 (en) 2003-07-14 2004-05-24 Intraocular lens mechanism
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2004-05-24 PL PL04753051T patent/PL1653886T3/en unknown
PL1653886T3 (en) 2008-05-30