CN2717403Y - Sigma artificial crystallire lens - Google Patents
Sigma artificial crystallire lens Download PDFInfo
- Publication number
- CN2717403Y CN2717403Y CN 200420010613 CN200420010613U CN2717403Y CN 2717403 Y CN2717403 Y CN 2717403Y CN 200420010613 CN200420010613 CN 200420010613 CN 200420010613 U CN200420010613 U CN 200420010613U CN 2717403 Y CN2717403 Y CN 2717403Y
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- China
- Prior art keywords
- lens
- sigma
- artificial
- intraocular lens
- edge
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- Expired - Fee Related
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Abstract
The utility model relates to a sigma artificial crystallire lens, which is characterized in that the edge of the artificial crystallire lens optical lens is designed and processed into a wedge-shaped curved inward to form two ring surfaces with 360 DEG, the ring surfaces are respectively form an included angle with the optics main plane of the artificial crystallire lens, and the included angle which is greater than 90 DEG faces to the center of the lens. Viewed from the side, the artificial crystallire lens likes a Greek letter sigma, so the utility model is called the sigma artificial crystallire lens. The artificial crystallire lens has the characteristics of preventing the after cataract, and the utility model can reduce or prevent glare.
Description
(1) technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of sigma intraocular lens.
(2) background technology
The intraocular lens is public artificial optics implant, is used to implant the ophthalmic of cataract patient, substitutes people's crystalline lens, cataract patient is recovered lost eyesight, or implant the ophthalmic that other need implantable artificial crystalline lens person, carries out correction of refractive errors.
Existing intraocular lens's manufacturing technology is still perfect inadequately, one of them comparatively distinct issues be, extract cataract implantable artificial crystalline lens after a period of time in operation, the lens epithelial cells hypertrophy that residues in the lens capsule bag ambitus travels between intraocular lens and the back cyst membrane, form membranaceous muddy thing, stop passing of light, formed after cataract, made patient's vision descend once more even blind.Another outstanding problem that existing intraocular lens exists is, rims of the lens between intraocular lens's optical lens front and rear surfaces has the effect of reflection ray, these light that arrived eyes retina by the artificial lens edge reflections form dazzle, particularly under the night environment with dark light, when pupil diameter was big, glare phenomenon was more outstanding.
(3) summary of the invention
This utility model is exactly a kind of novel intraocular lens who designs at the problem of above-mentioned prior art existence.
The intraocular lens is made up of optical lens and two or several supports (or being called loop) usually.Optical lens has towards the front surface of cornea with towards amphiblestroid rear surface, and the periphery of intraocular lens's optical lens front and rear surfaces is to have certain thickness rims of the lens.
This utility model is processed into inwardly recessed wedge with the edge designs of intraocular lens's optical lens, form the anchor ring of two 360 degree, two anchor rings can be wide, also can right and wrong wide, two anchor rings respectively with artificial lens before and after the ring edge of optical surface join, form sharp keen edge.Two anchor rings form angles greater than 90 degree towards the lens centre with the optics principal plane of artificial lens respectively, see similarly to be the Greek alphabet ∑ (sigma) of capitalization from the side, so we are referred to as the sigma intraocular lens.The front and rear surfaces of sigma intraocular lens optical lens can be convex, planar shaped, spill, cylindricality or aspheric surface shape, sheet type transfer principle according to optical lens, the front and back optical surface can be made different separately face shape and diopter, is combined into various intraocular lens's diopter specification.The shape of artificial lens can be designed as circular or non-circular.
Characteristics of the present utility model are:
1. this utility model sigma intraocular lens implants in patient's the capsule bag, sharp keen ring edge presses the back cyst membrane, the epithelial cell that stops hypertrophy to be divided a word with a hyphen at the end of a line is grown between intraocular lens's optical lens rear surface and back cyst membrane, thereby prevents after cataract.
2. the intilted anchor ring of this utility model has changed the reflection of light direction at directive artificial lens edge, and its direction is no longer towards retina, thereby avoids causing dazzle.
3. design of the present utility model can be used for the intraocular lens of various material.
4. the doctor is when selecting the intraocular lens for cataract patient, and this utility model is identical with the intraocular lens's of other type diopter calculating method, and the method that operation is implanted does not have any change yet.
5. production technology of the present utility model and original technology are basic identical, do not change the safety in utilization of product.
(4) description of drawings
Fig. 1, intraocular lens's front elevation
Fig. 2, intraocular lens implant the lateral plan behind the ophthalmic
Fig. 3, intraocular lens's optical lens edge luminous reflectance sketch map
Fig. 4, sigma intraocular lens optical lens edge side view
Fig. 5, sigma intraocular lens optical lens edge luminous reflectance sketch map
Fig. 6, sigma intraocular lens side view
(5) specific embodiment
Be described further below in conjunction with accompanying drawing, but be not limited to this utility model.
Shown in Fig. 1 to 6: the intraocular lens is made up of optical lens (1) and two or several supports (or being called loop) (2) usually.Intraocular lens's optical lens has towards the front surface of cornea (11) (3) with towards the rear surface (4) of retina (12), and intraocular lens's optical lens front and rear surfaces links to each other by having certain thickness edge (5).This utility model sigma intraocular lens is that the edge designs with intraocular lens's optical lens is processed into inwardly recessed wedge (6), form anchor ring (7) and (8) of two 360 degree, two anchor rings respectively with artificial lens before and after the ring edge of optical surface join, form sharp keen edge (9).In the intraocular lens implants patient's capsule bag (13), sharp keen ring edge presses the back cyst membrane, stops epithelial cell that hypertrophy divides a word with a hyphen at the end of a line to be grown into between intraocular lens's optical lens rear surface and the back cyst membrane, thereby prevents after cataract.Two anchor rings (7) and (8) can be wide, and are also can right and wrong wide, respectively with the optics principal plane (10) of artificial lens form towards the lens centre greater than the angles (A1) of 90 degree and (A2).To reflect the light (as Fig. 5) at most of directive artificial lens edge towards the anchor ring (7) of cornea, and change its reflection direction, to prevent and to reduce the dazzle that square edge intraocular lens (as Fig. 3) causes to the reflected light of retina direction.The relation of sigma intraocular lens loop and anchor ring as shown in Figure 6.
Claims (4)
1, sigma intraocular lens, form by optical lens and two or several supports, optical lens has towards the front surface of cornea with towards the rear surface of eyes retina, and sigma intraocular lens optical lens front and rear surfaces links to each other by having wedge edge certain thickness and that be processed into indent.
2, sigma intraocular lens according to claim 1 is characterized in that the edge designs of optical lens is processed as inwardly recessed wedge.
3, sigma intraocular lens according to claim 1, the wedge edge that it is characterized in that optical lens is made up of the anchor ring of two 360 degree, two anchor rings can be wide, also can right and wrong wide, two anchor rings respectively with artificial lens before and after the ring edge of optical surface join, form sharp keen edge.Two anchor rings form angles greater than 90 degree towards the lens centre with the optics principal plane of artificial lens respectively.
4, sigma intraocular lens according to claim 1, the front and rear surfaces that it is characterized in that optical lens can be convex, planar shaped, spill, cylindricality or aspheric surface shape and their combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010613 CN2717403Y (en) | 2004-04-13 | 2004-04-13 | Sigma artificial crystallire lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010613 CN2717403Y (en) | 2004-04-13 | 2004-04-13 | Sigma artificial crystallire lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717403Y true CN2717403Y (en) | 2005-08-17 |
Family
ID=34892551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420010613 Expired - Fee Related CN2717403Y (en) | 2004-04-13 | 2004-04-13 | Sigma artificial crystallire lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717403Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI594743B (en) * | 2012-12-27 | 2017-08-11 | Bionic artificial crystal body | |
| US10159562B2 (en) | 2014-09-22 | 2018-12-25 | Kevin J. Cady | Intraocular pseudophakic contact lenses and related systems and methods |
| US10299910B2 (en) | 2014-09-22 | 2019-05-28 | Kevin J. Cady | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method |
| US10945832B2 (en) | 2014-09-22 | 2021-03-16 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method |
| CN112656544A (en) * | 2021-01-15 | 2021-04-16 | 南京鼓楼医院 | Artificial lens with double optical zones |
| US11109957B2 (en) | 2014-09-22 | 2021-09-07 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method |
| US11938018B2 (en) | 2014-09-22 | 2024-03-26 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lens (IOPCL) for treating age-related macular degeneration (AMD) or other eye disorders |
-
2004
- 2004-04-13 CN CN 200420010613 patent/CN2717403Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI594743B (en) * | 2012-12-27 | 2017-08-11 | Bionic artificial crystal body | |
| US10159562B2 (en) | 2014-09-22 | 2018-12-25 | Kevin J. Cady | Intraocular pseudophakic contact lenses and related systems and methods |
| US10299910B2 (en) | 2014-09-22 | 2019-05-28 | Kevin J. Cady | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method |
| US10842614B2 (en) | 2014-09-22 | 2020-11-24 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lenses and related systems and methods |
| US10945832B2 (en) | 2014-09-22 | 2021-03-16 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method |
| US11109957B2 (en) | 2014-09-22 | 2021-09-07 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method |
| US11432921B2 (en) | 2014-09-22 | 2022-09-06 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lenses and related systems and methods |
| US11571293B2 (en) | 2014-09-22 | 2023-02-07 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method |
| US11583386B2 (en) | 2014-09-22 | 2023-02-21 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method |
| US11903818B2 (en) | 2014-09-22 | 2024-02-20 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lenses and related systems and methods |
| US11938018B2 (en) | 2014-09-22 | 2024-03-26 | Onpoint Vision, Inc. | Intraocular pseudophakic contact lens (IOPCL) for treating age-related macular degeneration (AMD) or other eye disorders |
| CN112656544A (en) * | 2021-01-15 | 2021-04-16 | 南京鼓楼医院 | Artificial lens with double optical zones |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |