CN100500115C - Artificial cornea made of multiporous nanometer carbon-polyvinyl alcohol hydrogel - Google Patents
Artificial cornea made of multiporous nanometer carbon-polyvinyl alcohol hydrogel Download PDFInfo
- Publication number
- CN100500115C CN100500115C CNB2004100271226A CN200410027122A CN100500115C CN 100500115 C CN100500115 C CN 100500115C CN B2004100271226 A CNB2004100271226 A CN B2004100271226A CN 200410027122 A CN200410027122 A CN 200410027122A CN 100500115 C CN100500115 C CN 100500115C
- Authority
- CN
- China
- Prior art keywords
- cornea
- optic
- polyvinyl alcohol
- artificial cornea
- alcohol hydrogel
- 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
Links
Images
Landscapes
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Abstract
A porous nanometer carbon-polyvinyl alcohol hydrogel artificial cornea, which is used for patients of cornea diaphaneity descent and cornea blind caused by eye tissue diseases, consisting of an optical part and a supporting part, the optical part being made from transparent polyvinyl alcohol hydrogel, and the supporting part being made from black nanometer carbon materials. The optical part is provided with an upper and a lower surface, the supporting part enwraps the optical part, combines tightly with human cornea tissues, and is embedded in the optical part. The materials of the optical part protrude on the top and the bottom and overtops the supporting part at the joint of the two parts, and forms a trapezoid right-angle structure. The invention overcomes the shortcomings of existing techniques, and is capable of watertightness engomphosis with host cornea, preventing infection, degrowth of corneal epitheliums, antagonizing intra-ocular pressure, and preventing the forming of the back fibrous membrane of cornea. The artificial cornea has advantages of tenderness, good elasticity, certain tensile strength, convenience in surgical operation, and maximum decrease of complicating diseases.
Description
Technical field
The present invention relates to the artificial cornea.Porous nano carbon-polyvinyl alcohol hydrogel artificial cornea is used for the corneal transparence that ocular tissue's disease etc. causes and descends, and the patient of corneal blindness replaces the cornea of destroyed, the artificial cornea that visual performance is recovered.
Background technology
The artificial cornea generally is made up of optic and support sector.
Open 1992 No. 158859 patents of communique of Japan Patent, disclosed artificial cornea's patent: support sector uses the artificial cornea with fine interstitial structure material, optic is made by the transparent plastic of visible rays thoroughly, and support sector makes with soft porous fluororesin.This artificial cornea's support sector has only used the soft porous fluororesin of fine interstitial structure to make, and therefore, can't resolve the problem that the ophthalmic aqueous humor flows out and antibacterial is invaded.
Open 1997 No. 182762 patents of communique of Japan Patent, disclosed artificial cornea's patent: in optic with have on the surface of fine interstitial structure support sector, be provided with non-pervious bed, better solved the healing of artificial cornea and ocular tissue, the ophthalmic aqueous humor flows out and antibacterial intrusion ophthalmic reaches stimulation problems such as palpebral conjunctivaes.But yet exist in the reality, and make the artificial cornea get rid of the problem that cornea tissue comes off because proliferative cell is grown downwards.
In addition, the someone attempt adopting multiple different materials (comprising: polymer, pottery, metal and from the same source tissue of body) make the edge support of artificial cornea support sector, but can not significantly reduce the incidence rate that the postoperative artificial cornea deviates from.
People such as Canada Celia R Hicks and Geoffrey J Crawford have reported the artificial cornea of employing " nuclear-skirt " structure in 2002, its histocompatibility is better relatively, but central optical zone is owing to the restriction diameter of material 3-3.5mm size only.The poor visual effect that postoperative obtained.
The content of invention
The objective of the invention is to solve the deficiency that exists in the above-mentioned prior art, a kind of porous nano carbon-polyvinyl alcohol hydrogel artificial cornea is provided.Connecting portion by improvement " nuclear-skirt " structure, to be formed by connecting by interact network method associating casting between central material and support, make the combination of the two tightr, can increase the aperture of central optical zone greatly, our artificial cornea's central optical zone of test can reach 5mm at present, can obtain bigger surgical field of view and visual effect.
Purpose of the present invention can be achieved through the following technical solutions:
Porous nano carbon-polyvinyl alcohol hydrogel artificial cornea is made up of optic and support sector, and optic has upper and lower surface, and support sector holds optic.Optic and support sector's surfaces externally and internally are curved surface, and the optic front and rear surfaces has different radius of curvature.Optic is made by transparent polyvinyl alcohol hydrogel, and support sector combines with human cornea tissue tight, and support sector embeds optic 0.5-1.5mm, prevents that oozing out with pathogen of aqueous humor from invading.Support sector is made by black porous nano material with carbon element, and its average pore size is 200-300 μ m, and voidage is more than 80%.Support sector's central area embeds central optic, and periphery embeds cornea tissue, and the rear surface of the front surface of optic, optic and support sector is provided with non-permeable coating; Junction in optic and support sector, the optic material protrudes in support sector, becomes the stairstepping right-angle structure, prevents optic front and rear surfaces tissue growth and causes its optical clarity to reduce.
The present invention has overcome the deficiency of prior art, and porous nano carbon-polyvinyl alcohol hydrogel artificial cornea can be watertightness chimeric with host's cornea, and defence is infected, the degrowth of corneal epithelial cell and antagonism intraocular pressure; Can prevent the formation of RCFM.Porous nano carbon-polyvinyl alcohol hydrogel artificial cornea softness, good springiness have certain tensile strength, are convenient to operation technique, and reduce complication to greatest extent.Compare with other artificial cornea with porous fibre timbering material, the material plasticity that the present invention uses is strong, is easy to processing, through one time punching molded, both can be made into, and has overcome in other artificial cornea's preparation process problems such as the complicated and degree of accuracy of operation is low.
Carbon nano-particles is compared with common carbon particle has different physicochemical properties:, surface energy higher as dissolubility is big, biological activity is better, inhibited to abnormal structure's (as cancerous cell, new vessels etc.), and normal structure is not had.It is a kind of biocompatibility good curing material.The artificial cornea's support that adopts carbon nano-particles to make not only has the favorable tissue compatibility, also has biological activity preferably, can suppress growing into of the formation of new vessels, unusual corneal epithelial cell, endotheliocyte, thereby improve artificial cornea's histocompatibility to a certain extent, reduce the generation of post-operative complication.And, compare with artificial cornea's support white or metallochrome of routine and visually can bring certain effect attractive in appearance after implanting in patient's eye because the carbon nano-particles support is black.
The Figure of description explanation:
Fig. 1: be a generalized section with the embodiment of artificial cornea's heeling-in of the present invention in cornea tissue.
Describe below in conjunction with the embodiment of accompanying drawing artificial cornea of the present invention.In Fig. 1, artificial cornea 1 of the present invention is made up of optic 2 with front 2a and back side 2b and support sector 3, and support sector 3 holds optic 2, and support sector's 3 central areas embed central optic 0.5-1.5mm, and periphery embeds human cornea tissue 6.In the junction of optic 2 with support sector 3, optic 2 materials protrude in support sector 3, form stairstepping right-angle structure 4.Artificial cornea's 1 heeling-in in cornea tissue 6, be provided with non-permeable coating 9 towards the lower surface of intraccular part one side 7 contacted optic 2b and the inner surface of support sector 3, on the upper surface 8 of optic 2a, be provided with non-pervious bed 5.
Embodiment 1
Making has the artificial cornea of shape shown in Figure 1: support sector's material of artificial cornea is a porous nano carbon.The optic material is a polyvinyl alcohol hydrogel.Two kinds of materials are made the artificial cornea by interpenetrating networks associating punching press casting disposal molding, its optic diameter 0.6-10.0mm, thick 200-400 μ m, optical center diameter 2-5mm, the wide 2.0-3.0mm in shirt rim.Optic becomes the stairstepping right-angle structure with peripheral support sector junction plasticity, and support sector enters optic 0.5-1.5mm, and the peripheral 100-150 μ m of support sector is given prominence on the upper and lower surface of optic.
Embodiment 2:
This artificial cornea is implanted the specific embodiment of new zealand rabbit cornea: after porous nano carbon one polyvinyl alcohol hydrogel artificial cornea is modified, adopt the wet disinfection method, concrete steps are as follows: 1, the artificial cornea is steeped in the 10%NaOH solution, sterilized 3 hours down at 35 ℃; 2, under aseptic condition, the artificial cornea moved in the free of contamination 0.1%NaOH solution preserve; 3, at the implantable artificial cornea preceding 20 minutes, the artificial cornea is moved to the free of contamination 0.5%NaHCO of disinfectant
3In the solution, jiggled 10 minutes, in and NaOH; 4, the artificial cornea is moved in the balanced salt solution flushing 6 times, standby.This artificial cornea is implanted the new zealand rabbit inter-lamination of cornea, postoperative 1 month, most of new vessels cornea central authorities of growing into, lasted till postoperative 2 months, the new vessels growth peaks during March, postoperative 6 months sees that all cornea central authorities retain the new vessels that attenuates in a large number for two groups, does not see complication such as material discharge, infection.The dyeing of haematoxylin-Yihong finds that postoperative has fibroblast to grow in the outer rim support sector material hole during January, with new vessels and a spot of inflammatory cell, have a small amount of collagen to form.All holes are mainly collagenocyte and new vessels all by the cambium filling in 3 months edge support portions of postoperative material, and the fibroblast endochylema is abundant, and karyon is little, and cell is grown along stringer direction concordance in hole.The central optic material surface is not seen epithelial cell growth, and the central optic material is transparent.This artificial cornea and histocompatibility are good, do not see complication such as outflow of ophthalmic aqueous humor and intraocular infection.
Claims (4)
1. porous nano carbon-polyvinyl alcohol hydrogel artificial cornea is made up of optic and support sector, it is characterized in that: described optic is made by polyvinyl alcohol hydrogel; Described support sector is made by porous nano carbon, can combine with human cornea tissue tight, and it holds described optic and embeds optic 0.5-1.5mm; Junction in described optic and support sector, optic are outstanding up and down to be higher than support sector, and plasticity becomes the stairstepping right-angle structure.
2. require 1 described porous nano carbon-polyvinyl alcohol hydrogel artificial cornea according to patent, it is characterized in that: be provided with non-permeable coating at the upper surface of optic, the lower surface of optic and the lower surface of support sector.
3. porous nano carbon according to claim 1-polyvinyl alcohol hydrogel artificial cornea is characterized in that: optic and support sector's surfaces externally and internally are curved surface, and the optic surfaces externally and internally is a different curvature radius, have the different lens number of degrees.
4. porous nano carbon according to claim 1-polyvinyl alcohol hydrogel artificial cornea is characterized in that: the average pore size of porous nano carbon is 200-300 μ m, and voidage is more than 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100271226A CN100500115C (en) | 2004-05-03 | 2004-05-03 | Artificial cornea made of multiporous nanometer carbon-polyvinyl alcohol hydrogel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100271226A CN100500115C (en) | 2004-05-03 | 2004-05-03 | Artificial cornea made of multiporous nanometer carbon-polyvinyl alcohol hydrogel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1568908A CN1568908A (en) | 2005-01-26 |
| CN100500115C true CN100500115C (en) | 2009-06-17 |
Family
ID=34480878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100271226A Expired - Fee Related CN100500115C (en) | 2004-05-03 | 2004-05-03 | Artificial cornea made of multiporous nanometer carbon-polyvinyl alcohol hydrogel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100500115C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8029515B2 (en) * | 2005-01-31 | 2011-10-04 | Yichieh Shiuey | Corneal implants and methods and systems for placement |
| CN101658445B (en) * | 2008-08-29 | 2011-08-17 | 四川大学 | Integrated artificial cornea and preparing method thereof |
| CN101856508A (en) * | 2010-05-21 | 2010-10-13 | 天津大学 | Novel aquagel tissue filling agent used for ophthalmonogy |
| US20150257873A1 (en) * | 2010-09-30 | 2015-09-17 | Yichieh Shiuey | Reversibly deformable artificial cornea and methods for implantation |
| CN102283720A (en) * | 2011-08-01 | 2011-12-21 | 姚晓明 | Artificial cornea |
| CN102580147B (en) * | 2012-02-28 | 2014-10-01 | 深圳华明生物科技有限公司 | Keratoprosthesis and preparation method thereof |
| CN103565557A (en) * | 2013-11-15 | 2014-02-12 | 厦门大学 | Artificial cornea |
| CN109157305B (en) * | 2018-09-25 | 2021-05-25 | 广州锐澄医疗技术有限公司 | Composite artificial cornea and preparation method thereof |
| CN117045391A (en) * | 2023-09-18 | 2023-11-14 | 上海视科新工医疗器械有限公司 | Integrated artificial cornea and preparation method thereof |
-
2004
- 2004-05-03 CN CNB2004100271226A patent/CN100500115C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1568908A (en) | 2005-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6685265B2 (en) | Reversibly deformable artificial cornea and method for implantation | |
| AU721065B2 (en) | Artificial cornea | |
| JP5058408B2 (en) | Corneal implant and method for producing the same | |
| CN101018513B (en) | Vision enhancing ophthalmic devices and related methods and compositions | |
| WO2006002128A1 (en) | Use of amniotic membrane as biocompatible devices | |
| CN1458849A (en) | Pre-fabricated corneal tissue lens and method of corneal overlay to correct vision (II) | |
| CN100500115C (en) | Artificial cornea made of multiporous nanometer carbon-polyvinyl alcohol hydrogel | |
| CN100415190C (en) | Novel aqueous humor drainage device for glaucoma | |
| WO2021085903A1 (en) | Implant for nasolabial angle corrective surgery | |
| CN107007879A (en) | A kind of active artificial cornea and preparation method thereof | |
| CN210130973U (en) | Artificial cornea | |
| CN2863041Y (en) | Aqueous humor drainage device for new type glaucoma | |
| WO2006009490A1 (en) | Cornea reinforcing implant and a keratoprosthesis provided with a plate made of porous polytetrafluorethylene | |
| CN102599992A (en) | Artificial lens with iris diaphragm | |
| CN100502807C (en) | Ametropia correcting glasses for eye of posterior chamber type lens | |
| Dupont et al. | Biocompatibility of human collagen type IV intracorneal implants | |
| CN1212104C (en) | Bag type artificial vitreous body and its mfg method | |
| CN118078494A (en) | Hydrophobic double-ring target implant for treating corneal edema | |
| CN101829365B (en) | Sclera external pressurized biologic composite materials and preparation method | |
| LU503932B1 (en) | A large-diameter artificial corneal endothelial sheet and application thereof | |
| CN219983199U (en) | Interlaminar hydrophobic implant for treating corneal oedema | |
| Chung et al. | Diplopia and periorbital mass associated with Miragel buckling explant. | |
| KR20210052168A (en) | Implant for surgery improving nasolabial angle | |
| RU2124331C1 (en) | Keratoprosthesis | |
| CN2333368Y (en) | Artificial cornea with button loop support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN HUAMING BIOTECHNOLOGY CO., LTD. Free format text: FORMER OWNER: YAO XIAOMING Effective date: 20130108 Free format text: FORMER OWNER: DENG HONGWEI Effective date: 20130108 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130108 Address after: Shenzhen Nanshan District City, Guangdong province 518000 Hing Road Beijing Road East light seascape garden B 2- mall No. 2-212 Patentee after: SHENZHEN HUAMING BIOTECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Futian District Lotus Garden 2 building 1203 Pecan Patentee before: Yao Xiaoming Patentee before: Deng Hongwei |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 |