CN205672112U - A kind of multifocal intraocular lenses - Google Patents
A kind of multifocal intraocular lenses Download PDFInfo
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- CN205672112U CN205672112U CN201620377254.XU CN201620377254U CN205672112U CN 205672112 U CN205672112 U CN 205672112U CN 201620377254 U CN201620377254 U CN 201620377254U CN 205672112 U CN205672112 U CN 205672112U
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- optical lens
- intraocular lenses
- multifocal intraocular
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- fan
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Abstract
The utility model discloses a kind of multifocal intraocular lenses, it is the optical lens of convexity including two sides, it is characterized in that: described optical lens front surface is made up of the fan-shaped convex surface that three central angles are 120 degree, the summit of described fan-shaped convex surface overlaps, each fan-shaped convex radius is different, described optical lens rear surface is aspheric surface, described optical lens edge is provided with four and connects loop, described connection loop is distributed around optical lens is overall in X-shaped, connect loop end and be provided with expanding section, expanding section end is in the form of a ring, described novel intraocular lens safety rational in infrastructure, can even regulation lens optical lens, multifocal can make visual line of sight not have fuzzy region, vision becomes apparent from.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly relates to a kind of multifocal intraocular lenses.
Background technology
Multifocal intraocular lenses is a kind of artificial lenses that can implant ophthalmic, becomes because of cataract conditions for replacing
The muddy natural lens in human eye, or for refractive surgery to correct the vision of human eye.By multifocal intraocular lenses
Implanting in patient's pouch, during by seeing far, seeing near, ciliary muscle loosens and shrinks, and makes ciliary ring expand, reduce, thus by crystalline lens
Optic shifts before and after pushing, and produces the regulation effect of similar human lens, existing multifocal intraocular lenses optical lens
Mirror front surface is formed by ring-like of different curvature radius, and each ring-like with the combination of the aspheric surface of rear surface thus has identical
Diopter, but in each ring-like edge critical part, it may appear that fuzzy region, cause misted；And optical lens
Mirror be connected between loop easily adhesion, operating difficulty can be increased, be unfavorable for that multifocal intraocular lenses is implanted；Multifocal is artificial simultaneously
Lens insertion procedure can bring post-operation inflammatory, and posterior capsule opacification, corneal endothelium are recovered by Postoperative inflammatory reaction, Secondary cases green light
The complication such as eye have significantly impact, and postoperative inflammatory reaction cannot be avoided, if can not antiinflammatory in time prevent, will increase
Patient performs the operation painful and postoperative hidden danger, is unfavorable for vision restoration.
Utility model content
The purpose of this utility model is to overcome each ring-like edge critical part of multifocal intraocular lenses optical lens
The problem that the regulation of blurred vision, multifocal intraocular lenses is uneven, and provide a kind of optical lens front surface by three centers of circle
Angle be 120 degree fan-shaped convex surface composition, connect loop have special construction and point in X-shaped the multifocal intraocular lenses of distribution, should
It is more reasonable that multifocal intraocular lenses connects loop structure, can even regulation lens optical lens, and sight line model can be made
Enclosing and do not have fuzzy region, vision becomes apparent from.
This utility model is achieved in that a kind of multifocal intraocular lenses, is the optical lens of convexity including two sides
Mirror, described optical lens front surface is made up of the fan-shaped convex surface that three central angles are 120 degree, the summit weight of described fan-shaped convex surface
Closing, each fan-shaped convex radius is different, and described optical lens rear surface is aspheric surface, and described optical lens edge is provided with four
Individual connection loop, described connection loop is distributed in X-shaped around optical lens is overall, connects loop end and be provided with expanding section, and expanding section is ring
Shape.
Above-mentioned a kind of multifocal intraocular lenses, multifocal intraocular lenses total length 9.8mm, optical lens is a diameter of
5.5mm。
Above-mentioned a kind of multifocal intraocular lenses, described multifocal intraocular lenses optical lens is limpid, soft
Hydrophilic acrylate.
Above-mentioned a kind of multifocal intraocular lenses, in the counterclockwise direction, the radius of curvature of three fan-shaped convex surfaces exists
It is gradually increased in the range of 7.71mm-7.77mm.
Above-mentioned a kind of multifocal intraocular lenses, described optical lens rear surface is ellipsoid or parabola or hyperboloid
In one.
Above-mentioned a kind of multifocal intraocular lenses, four connect loop and are symmetrically distributed in optical lens both sides.
Above-mentioned a kind of multifocal intraocular lenses, described connection loop is provided with the circular little projection of equal diameter.
Above-mentioned a kind of multifocal intraocular lenses, described expanding section is provided with through hole, is filled with spacetabs type medicine in through hole
Thing.
This utility model has the advantage that the fan that this multifocal intraocular lenses three central angles of employing are 120 degree
Shape convex surface composition optical lens front surface, it is possible to there is not fuzzy region in the range of making postoperative normal line of sight, the visual field is more
Clearly, four connect loop and by pouch, the strength of Suspensory ligament can be delivered evenly to optic, reach the purpose of even regulation,
And maintain the shape of pouch to greatest extent, prevent multifocal intraocular lenses partial center, little projection to be possible to prevent when operation
Optical lens be connected loop adhesion, it is easy to operation, and the through hole connecting loop end expanding section can persistently delay Slow release,
Ensure postoperative antiinflammatory timely to eye, make lens implanting safer.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model；
Fig. 2 is optical lens structure schematic diagram of the present utility model；
Fig. 3 is connection loop structural representation of the present utility model.
In figure: 1-optical lens, 2-connects loop, 3-sector convex surface, 4-expanding section, 5-through hole, and 6-is protruding.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model will be further described.
Embodiment 1: a kind of multifocal intraocular lenses, as it is shown in figure 1, include the optical lens 1 that two sides is convexity, institute
Optical lens 1 front surface stated is made up of the fan-shaped convex surface 3 that three central angles are 120 degree, the summit weight of described fan-shaped convex surface 3
Closing, each fan-shaped convex surface 3 radius of curvature is different, and described optical lens 1 rear surface is ellipsoid or parabola or hyperboloid, described light
Learning rims of the lens and be provided with four c-types connection loops 2, described connection loop 2 is X-shaped distribution around optical lens 1 entirety, connects loop 2
End is provided with expanding section 4, and expanding section 4 is in the form of a ring.
As shown in Figure 1, 2, multifocal intraocular lenses total length 9.8mm, a diameter of 5.5mm of optical lens 1, optical lens 1
For limpid, soft hydrophilic acrylate, crystalline lens is collapsible, and patient is when implanting multifocal intraocular lenses, and operation is cut
Mouth is little, increases operation safety；Forward and backward two surfaces of optical lens 1 are convexity, and front surface is 120 degree by three central angles
Fan-shaped convex surface 3 forms, and the summit of fan-shaped convex surface 3 overlaps, and three fan-shaped convex surface 3 radius of curvature are respectively 7.72 in the counterclockwise direction
Mm, 7.74 mm, 7.76 mm, optical lens 1 rear surface is ellipsoid, each fan-shaped convex surface 3 and aspherics lens rear surface
After in conjunction with, all can reach diopter 20D, fan-shaped convex surface 3 edge is not result in that blurred vision region occurs, makes patient implant
The vision become apparent from is had after crystalline lens.
As shown in Figure 1,3, four connect loop 2 and are symmetrically distributed in optical lens 3 both sides, slightly elastic, at described connection loop 2
It is provided with circular equal diameter little by protruding 6, facilitates operation process separation optical lens 1 and be connected loop 2, increase multifocal artificial simultaneously
Crystalline lens connects the frictional force of loop 2 and sclera interlayer, makes connection loop 2 end fix and does not dislocates, has some through holes at expanding section 4
5, it is filled with slow-release medicine in through hole 5, slow-release medicine is made up of anti-inflammatory drug and pharmaceutical carrier degradable polymer,
After surgery eye is carried out medicament slow release antiinflammatory.
Claims (8)
1. a multifocal intraocular lenses, is the optical lens of convexity including two sides, it is characterised in that: described optical lens
Mirror front surface is made up of the fan-shaped convex surface that three central angles are 120 degree, and the summit of described fan-shaped convex surface overlaps, and each fan-shaped convex surface is bent
Rate radius is different, and described optical lens rear surface is aspheric surface, and described optical lens edge is provided with four and connects loop, described company
Connecing loop to be distributed in X-shaped around optical lens is overall, connect loop end and be provided with expanding section, expanding section is in the form of a ring.
2. a kind of multifocal intraocular lenses as claimed in claim 1, it is characterised in that: multifocal intraocular lenses total length 9.
8mm, a diameter of 5.5mm of described optical lens.
3. a kind of multifocal intraocular lenses as claimed in claim 1, it is characterised in that: described optical lens is limpid, soft
The hydrophilic acrylate of property.
4. a kind of multifocal intraocular lenses as claimed in claim 1, it is characterised in that: in the counterclockwise direction, three sectors
The radius of curvature of convex surface is gradually increased in the range of 7.71mm-7.77mm.
5. a kind of multifocal intraocular lenses as claimed in claim 1, it is characterised in that: described optical lens rear surface is ellipse
One in sphere or parabola or hyperboloid.
6. a kind of multifocal intraocular lenses as claimed in claim 1, it is characterised in that: four connect loop and are symmetrically distributed in light
Learn lens both sides.
7. a kind of multifocal intraocular lenses as claimed in claim 1, it is characterised in that: described connection loop is provided with circle etc.
The little projection of diameter.
8. a kind of multifocal intraocular lenses as claimed in claim 1, it is characterised in that: described expanding section is provided with through hole,
Slow-release medicine it is filled with in through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620377254.XU CN205672112U (en) | 2016-04-29 | 2016-04-29 | A kind of multifocal intraocular lenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620377254.XU CN205672112U (en) | 2016-04-29 | 2016-04-29 | A kind of multifocal intraocular lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205672112U true CN205672112U (en) | 2016-11-09 |
Family
ID=57439040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620377254.XU Active CN205672112U (en) | 2016-04-29 | 2016-04-29 | A kind of multifocal intraocular lenses |
Country Status (1)
| Country | Link |
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| CN (1) | CN205672112U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667623A (en) * | 2016-11-16 | 2017-05-17 | 无锡蕾明视康科技有限公司 | Variable multi-focus artificial lens |
| CN108524060A (en) * | 2018-04-16 | 2018-09-14 | 温州医科大学 | A kind of intraocular lens system of the replaceable optical section of Combined detachable |
| CN113545887A (en) * | 2021-04-06 | 2021-10-26 | 富螺(上海)医疗器械有限公司 | Intraocular lens |
-
2016
- 2016-04-29 CN CN201620377254.XU patent/CN205672112U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667623A (en) * | 2016-11-16 | 2017-05-17 | 无锡蕾明视康科技有限公司 | Variable multi-focus artificial lens |
| CN108524060A (en) * | 2018-04-16 | 2018-09-14 | 温州医科大学 | A kind of intraocular lens system of the replaceable optical section of Combined detachable |
| CN113545887A (en) * | 2021-04-06 | 2021-10-26 | 富螺(上海)医疗器械有限公司 | Intraocular lens |
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