CN100502807C - Ametropia correcting glasses for eye of posterior chamber type lens - Google Patents
Ametropia correcting glasses for eye of posterior chamber type lens Download PDFInfo
- Publication number
- CN100502807C CN100502807C CNB200710002523XA CN200710002523A CN100502807C CN 100502807 C CN100502807 C CN 100502807C CN B200710002523X A CNB200710002523X A CN B200710002523XA CN 200710002523 A CN200710002523 A CN 200710002523A CN 100502807 C CN100502807 C CN 100502807C
- Authority
- CN
- China
- Prior art keywords
- correction
- mirror
- optic
- refractive errors
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1602—Corrective lenses for use in addition to the natural lenses of the eyes or for pseudo-phakic eyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1602—Corrective lenses for use in addition to the natural lenses of the eyes or for pseudo-phakic eyes
- A61F2/161—Posterior chamber lenses for use in addition to the natural lenses of the eyes
Abstract
The invention discloses a posterior chamber phakic intraocular lens anisometropia corrector lens to be planted into the posterior chambers of eyes to correct the eyesight, comprising central optical part and peripheral supporting part, where the diameter of the optical part is 5.5mm-6.5mm; and the supporting part is composed of two-four supporting bodies, each supporting body is close to an isosceles triangle whose bottom side is curved and has a radian consistent with that of the edge of the optical part and whose point angle is of a small circular arc. And it is easy to implant for operation, having intensified adaptability to ciliary groove width and enlarges the diameter of the optical part to be able to avoid glare happening after operation.
Description
Technical field
The invention belongs to the medical apparatus and instruments of implant into body, relate in particular to the back room that is implanted in phakic eye, be used for the correction mirror of correction of refractive errors.
Background technology
Under the condition that keeps human lens, the eyeglass of manual manufacture is implanted the back room of eye by operation, be contemporary a kind of advanced person's rectification people ametropia, the technology of raising vision, be specially adapted to high myopia, high hypermetropia, high astigmatism equal altitudes ametropia patient.Its operation method is to make otch in edge of cornea portion, correction mirror is implanted the anterior chamber or the back room of eye.The correction mirror of implanting back room is called posterior chamber type phakic eye correction of refractive errors mirror.It is earlier correction mirror to be sent into the anterior chamber, implants back room through pupil again.The structure of posterior chamber type phakic eye correction of refractive errors mirror is made up of optic that is positioned at central authorities and the support portion that is positioned at periphery, and the edge of correction mirror is positioned at ciliary groove, with people's crystalline lens maintenance certain interval.For adapting to this operation method and the function of keeping correction mirror, the material and the shape of making correction mirror proposed corresponding requirement, particularly should be suitable for implanting by pupil the operation technique of back room from the anterior chamber.
At present the posterior chamber type phakic eye correction of refractive errors mirror of clinical use has two kinds in the PRL correction of refractive errors mirror that ICL correction of refractive errors mirror that U.S. Staar company produces and U.S. Vision-Medennium company produce in the world.
ICL correction of refractive errors mirror is overall for being similar to rectangular discoid body, the optic projection of middle section, be plano-concave shape, promptly, front surface is the plane, and the rear surface is a concave surface, and total length is between 11.5mm～13.0mm, optic diameter is 5.5mm～6.0mm, according to dioptric different optical portion diameter difference slightly.
Another kind was designed by American scholar Fyodorov early than 1987 at the widely used PRL correction of refractive errors of international medical community mirror, was produced by U.S. Vision-Medennium company at present.PRL correction of refractive errors mirror is a monolithic medicated cap shape, and its edge, support portion also is similar to rectangle.Its optic of PRL correction mirror that myopia correction is used is a double concave, and optic diameter is along with dioptric difference is divided into 4.5mm and two kinds of specifications of 5.0mm.
Notification number is CN1248661C, and the disclosed correction mirror shape of Chinese patent of " ophthalmic dioptric lens and method for implantation thereof " by name is rectangle as PRL correction of refractive errors mirror, and optic diameter is 5.5mm～6.0mm.
More than can be used for the correction of refractive errors mirror that the phakic eye back room implants in listed and other prior aries and in clinical practice, have following shortcoming: 1. the plate-like at correction of refractive errors mirror edge or medicated cap shape design the operation in the unfavorable Rhizoma Atractylodis Macrocephalae, easily cause the mechanical damage of iris; 2. optic diameter is 6mm to the maximum, and the patient that the part pupil is bigger is approaching when the diameter of its pupil, when meeting or exceeding correction of refractive errors mirror optic diameter, and dazzle and discomfort appear in postoperative.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of implantation of performing the operation to operate, can reduce even avoid the posterior chamber type phakic eye correction of refractive errors mirror to the iris mechanical damage than being easier to, it has extensive adaptability to ametropic patient in various degree, bigger to pupil especially patient can avoid the appearance of postoperative dazzle.
The present invention's " posterior chamber type phakic eye correction of refractive errors mirror " is made up of optic that is positioned at middle section and the support portion that is positioned at the neighboring area, the optic of middle section is circular plate type or disc, its front and rear surfaces can be bi-concave, also can be planoconcave, be that the front is the plane, the back is a concave surface.Optic diameter be except that can being designed to 5.5mm～6.0mm as prior art, and the diameter of the circular light department of the Chinese Academy of Sciences of posterior chamber type phakic eye correction of refractive errors mirror middle section of the present invention is greater than 6.0mm, between 6.5mm.The support portion is made up of two to four supporters, and each supporter is similar to an isosceles triangle.Leg-of-mutton base is an arcs of recesses, and its radian is consistent with the radian at corresponding light department of the Chinese Academy of Sciences edge, and leg-of-mutton drift angle is little circular arc.When correction mirror is established two supporters, be symmetrically arranged, correction mirror totally is blunt fusiformis; When correction mirror was established three supporters, three supporters were in the peripheral disposed at equal distance of optic, the overall as three hemp nettle shapes of correction mirror; When correction mirror was established four supporters, four supporters were in the peripheral disposed at equal distance of optic, and correction mirror is overall as quatrefoil shape.
In the present invention, the design of triangular support body can bring the benefit of two aspects at least: operation technique is carried out easily, be particularly suitable for implanting back room from the anterior chamber by pupil; 2. than the intraocular lens of at present used square rim, improved adaptability to the ciliary groove width.
In the present invention, intraocular lens's optic diameter is that prior art never has greater than the part of 6mm.Its advantage has been to increase the diameter of optic and can have avoided the postoperative dazzle to take place.
Description of drawings
Accompanying drawing is a posterior chamber type correction of refractive errors mirror structural representation of the present invention.Parts that number in the figure is represented or position are 1-optic; 2-supporter; 3-supporter and optic joining place; 4-supporter drift angle place.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Make the material of posterior chamber type phakic eye correction of refractive errors mirror of the present invention and can select light transmission and the good various biocompatible material of dioptric performance for use, as silicone rubber kinds, gel-like, acrylic acid esters and other macromolecule soft materials, wherein preferred hydrophobicity acrylic acid ester.In same correction of refractive errors mirror, can use a kind of material to make the optic and the support portion of correction mirror simultaneously, also can use two kinds of materials to make the optic and the support portion of correction mirror respectively.
Optic and support portion that embodiment 1 uses commaterial to make the correction of refractive errors mirror simultaneously
Its master operation step is 1. to design by the correction mirror of computer numerical controlled pattern to required production; 2. according to the difference of institute's materials used, be chosen in the method for carrying out machine cut or injection molded under the certain environment temperature, make it have the overall shape of central optic and peripheral support; 3. optic is carried out polishing, make it reach the diopter of design.
Embodiment 2 uses two kinds of optic and support portions that material is made the correction of refractive errors mirror respectively
Its master operation step is 1. by computer numerical controlled pattern the correction mirror of required production to be carried out master-plan; 2. according to the physical property of institute's materials used, be chosen in and carry out machine cut or injection molded under the certain environment temperature, machine the optic and the support portion of correction mirror respectively; 3. polishing optic, accurately its diopter; 4. according to the difference of two kinds of material coefficients of heat perception, at a certain temperature optic is inserted or be bonded in the support portion.
Embodiment 3 uses two kinds of optic and support portions that material is made the correction of refractive errors mirror respectively
Its master operation step is 1. by computer numerical controlled pattern the correction mirror of required production to be carried out master-plan; 2. the method for application machine cutting or the injection molded material that will make optic earlier becomes cylindrical base, and the diameter of cylinder equals the diameter of required correction mirror optic; 3. the material that will make the support portion again becomes the tubular base, and the intracavity diameter of pipe equals to make the diameter of the cylindrical base of optic, and the wall thickness of pipe is slightly larger than the leg-of-mutton height of required supporter; 4. with cylindrical base and tubular base suit, the two is combined together, cut again, polish, polish, make the correction of refractive errors mirror with hot melt or bonding method.
In above embodiment, the correction mirror three-dimensional shape of made such as dish type or hat, its optic 1 is as dish type, and the diameter of optic 1 is chosen between 5.5mm～6.5mm.Wherein, the diameter of optic 1 is the part that is different from prior art greater than 6.0mm less than the 6.5mm scope.The support portion is made up of two to four supporters 2, and each supporter 2 is similar to an isosceles triangle.Leg-of-mutton base is that supporter and optic joining place 3 are arcs of recesses, and its radian is consistent with the radian at the corresponding light department of the Chinese Academy of Sciences 1 edge, and the drift angle 4 of triangular support body is little circular arc.When correction mirror is established two supporters 2, be symmetrically arranged, correction mirror totally is blunt fusiformis, as shown in drawings; When correction mirror was established three supporters 2, three supporters 2 were in the peripheral disposed at equal distance of optic, the overall as three hemp nettle shapes of correction mirror; When correction mirror was established four supporters 2, four supporters 2 were in the peripheral disposed at equal distance of optic, and correction mirror is overall as quatrefoil shape.The diameter of the total length of fusiformis correction mirror or three hemp nettle shapes, quatrefoil shape correction mirror is between 11.5mm～13.0mm.
Claims (2)
1. posterior chamber type phakic eye correction of refractive errors mirror, for the back room of implanting phakic eye, the use of correcting defects of vision, it comprises the optic of middle section and the support portion of periphery, it is characterized in that, the support portion is made up of three of disposed at equal distance around the optic or four supporters, each supporter is similar to an isosceles triangle, leg-of-mutton base is an arcs of recesses, its radian is consistent with the edge of optic, leg-of-mutton drift angle is little circular arc, correction of refractive errors mirror overall as three hemp nettle shapes or quatrefoil shape.
2. correction of refractive errors mirror according to claim 1 is characterized in that, the diameter of the circular light department of the Chinese Academy of Sciences of described middle section is greater than 6.0mm, between 6.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710002523XA CN100502807C (en) | 2007-01-25 | 2007-01-25 | Ametropia correcting glasses for eye of posterior chamber type lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710002523XA CN100502807C (en) | 2007-01-25 | 2007-01-25 | Ametropia correcting glasses for eye of posterior chamber type lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021622A CN101021622A (en) | 2007-08-22 |
| CN100502807C true CN100502807C (en) | 2009-06-24 |
Family
ID=38709447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710002523XA Expired - Fee Related CN100502807C (en) | 2007-01-25 | 2007-01-25 | Ametropia correcting glasses for eye of posterior chamber type lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100502807C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6066907B2 (en) * | 2010-07-26 | 2017-01-25 | ヴィジョン・シーアールシー・リミテッド | Treatment of eye refractive error |
| CN103340703A (en) * | 2013-06-17 | 2013-10-09 | 无锡蕾明视康科技有限公司 | Implantable myopia lens and preparation method thereof |
| CN108078652A (en) * | 2017-01-06 | 2018-05-29 | 爱博诺德（北京）医疗科技有限公司 | Posterior chamber type has crystal eye intraocular lens |
| MX2020000415A (en) * | 2017-07-11 | 2020-02-24 | Onpoint Vision Inc | Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method. |
-
2007
- 2007-01-25 CN CNB200710002523XA patent/CN100502807C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101021622A (en) | 2007-08-22 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20090624 Termination date: 20190125 |