CN201160919Y

CN201160919Y - Novel split type artificial cornea

Info

Publication number: CN201160919Y
Application number: CNU2008200055358U
Authority: CN
Inventors: 黄一飞; 白华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-05
Filing date: 2008-03-05
Publication date: 2008-12-10
Anticipated expiration: 2018-03-05

Abstract

The utility model relates to an artificial cornea device, in particular to a novel detachable artificial cornea which comprises a central optical part and a fixed part arranged at the periphery. A connecting ring is arranged between the central optical part and the fixed part; the central optical part and the fixed part are connected into a whole through screw threads or the connecting ring. The central optical part is divided into a central optical lens column or a temporary lens column core filler; the fixed part is divided into a individual loop-shaped bracket fixed structure. The machining precision of the detachable artificial cornea is very high, and the screwed lens column and the bracket are combined in a water-tight way; any bond is not needed; the attrited lens column can be replaced at any moment; the height, the length and the dioptre of the lens column can be adjusted according to the specific condition, and the treatment for the postoperative complications is also convenient. The design of the temporary lens column solves the difficulty that position mart is not clear in the secondary operation, and causes the operation to be accurate and fast.

Description

Novel split type artificial cornea

Technical field

This utility model relates to a kind of artificial cornea's device, especially a kind of novel split type artificial cornea.

Background technology

The artificial cornea is the corneal opacity patient's that can't recover lost eyesight with operation on cornea the means of finally recovering lost eyesight.For reaching ideal optical effect, the artificial cornea is many at present, and employing is through, and promptly artificial cornea's opticator connects the cornea holostrome, by support optic is fixed on cornea central authorities.Most artificial corneies in the past are subjected to patient's cornea self-condition, leakage of aqueous humor appears in the combine influences such as interface problem of part of the material of selecting, different modus operandis and material, back propagation film forms, complication such as surrounding tissue dissolving and even artificial cornea's discharge.This novel split type artificial cornea of our research design can reduce the incidence rate of these complication effectively.

Summary of the invention

Thereby the purpose of this utility model be to provide a kind of can with host's cornea tissue reach biological healing can provide be fixed well, printing opacity is good and the novel split type artificial cornea that makes things convenient for operation technique.

For realizing above-mentioned utility model purpose, this utility model is by the following technical solutions: it comprises that central optic divides and be located at the standing part of periphery, be provided with connecting ring between described central optic branch and the standing part, central optic is divided and standing part is connected as a single entity by screw thread or connecting ring.

Described central optic is divided into central optical frames post or interim mirror post is filled out core, and described standing part is the button loop shape support fixed structure of individuation.

Described button loop shape support fixed structure closes the button loop structure at least two ring-types.

Described button loop shape support fixed structure is at least two sector structures, and flabellum is provided with hole (4), and the diameter of hole (4) is 0.2-2mm.

The surface of described button loop shape support fixed structure is provided with finishing and the processing layer by plasma treatment or biomaterial bag quilt or hydroxyapatite plated film.

Described central optic is divided into multistage cylindrical-shaped structure.

Described multistage body diameter is 2.2mm-3.2mm, and length is 2.4mm-5.0mm.

Be provided with screw thread in the middle of the described multistage cylinder and be connected with standing part or connecting ring, described reach is 0.5mm-2.0mm, and it comprises that also part can be a little more than the anterior of anterior surface of cornea and the part of charging into the anterior chamber.

The front surface of described central optical frames post has certain refractive power, and front surface or front end side are provided with aperture or groove.

Described interim mirror post is filled out core, and good biomaterial is made with the color compatibility is arranged, and has the screw thread identical with central mirror post and suitably slightly exceeds the planar front portion of support.

Because this utility model has adopted said structure, compared with prior art has following outstanding advantage: the 1. support of individuation implant angle lamina membranacea interlayer, its button loop shape design has kept the intensity of cornea largely, tissue is grown into fast, reach biological healing, increased artificial cornea's fastness, can partly carry out the modification and the processing on surface to the backbone metal material simultaneously, can significantly increase artificial cornea's fastness, reduce, complication such as dystopy.2. the design of the screw thread of coupling part or connecting ring has reached watertight, avoided leaking and reduced complication such as surrounding tissue dissolving, need not any binding agent, can change the mirror post of wearing and tearing at any time, can regulate the height of mirror post as the case may be, length, diopter also is convenient to the processing of post-operative complication.3. the incidence rate of the back propagation film of the mirror post of multistage column structure design the minimizing can be regulated replacing simultaneously at any time, makes things convenient for the doctor to handle complication and adjusting refractive diopter better.4. the design of filling out core of the interim mirror post made of colored materials has made things convenient for the location of operation, the complication brought is forbidden in the location when having avoided the second stage of implantation mirror post, also can play simultaneously the effect that promotes that mirror post surrounding tissue hypertrophy thickens, solved the unclear difficulty of telltale mark in the secondary operation, made operation accurately quick.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1, the 2nd, the structural representation of this utility model embodiment 1;

Fig. 3,4, the 5th, the structural representation of this utility model embodiment 2;

Fig. 6 is a side view of the present utility model;

Fig. 7 is a central optical frames rod structure sketch map of the present utility model;

Fig. 8 is that interim mirror post of the present utility model is filled out the cored structure sketch map.

The specific embodiment

This utility model is by the following technical solutions: split type artificial cornea, comprise central optic divide 1 and the periphery support fix 2 parts, central optic divide 1 and standing part 2 between also be provided with connecting ring 3, central optic divide 1 and standing part 2 directly be connected as a single entity by screw thread 6 or by connecting ring 3, wherein, central optic divides 1 for multistage cylindric.The staging operation mode is adopted in operation, can significantly improve operation safety, reduces the generation of severe complication.Concrete each parts and purposes are presented below respectively:

1. the support standing part 2, be used for operation and implant inter-lamination of cornea, can adopt two buttons loop or many button loop designs according to the cornea condition, suitable with the cornea radian, central authorities are platform-like, artificial cornea in the past compares and can reduce the isolating area of inter-lamination of cornea to greatest extent, the intensity that keeps cornea tissue increases artificial cornea's stability, makes things convenient for the repairing of layer tissue before the artificial cornea and resets, be convenient to operations such as suture sutured

What 2. support standing part 2 used is rigid metal material (this case embodiment is titanium alloy) with good biocompatibility, and its two buttons loop or the structure of fastening with a rope, string, etc. can be closed button loop shape (as embodiment 1) for two or more ring-types more; Also can be segmental two leaves, SANYE or leafy shape and form button loop shape structure (as embodiment 2), on fan-shaped leaf, adopt artificial method of punching to form the hole 4 of the biological 0.2-2mm that connects then.

3. central optic divide 1 use (this case embodiment is polymethyl methacrylate, poly (methylmethacrylate) in order to have good biocompatibility and the good rigid biomaterial of optical property; PMMA).

4. central optic divides 1 to be " multistage " cylindric mirror rod structure, and multistage body diameter is 2.2mm-3.2mm, and length is 2.4mm-5.0mm.They comprise that part can be a little more than the front portion 5 of anterior surface of cornea; Be fixed in the screw thread 6 on the support, it can be by screwing in or screw out the length of changing and regulating processus aboralis or prolapse at any time; Charge into anterior chamber's part 7.Central optic divides 1 can realize and being connected and the watertight combination of support standing part 2 by dual mode, and the one, adopt screw thread 6 directly to be connected with support, reach is 0.5mm-2.0mm at this moment; The 2nd, embed connecting ring 3 at support standing part 2 medium pores, again the mirror post is screwed in the connecting ring 3.Sulculus or hole can be opened in mirror post front surface or front end side, are convenient to the installation and removal of mirror post by instruments such as special tweezers or spanners.The mirror post design that protrudes into the anterior chamber can prevent to breed film formed complication behind the mirror post.

5. central optic divides 1 the cylinder somascope column length can be according to patient's s own situation design different length.Implant ophthalmic and also can adjust the length that the mirror post screws in according to actual needs.

6. interim mirror post is filled out core 8, implants inter-lamination of cornea with support standing part 2 at first phase.It has identical screw thread 6 structures with final artificial cornea's mirror post of implanting, but does not protrude into the anterior chamber, only is temporarily fixed on artificial cornea's support standing part 2.For the patient of cornea weakness, the front portion 5 that interim mirror post is filled out core 8 suitably exceeds the support plane, and the effect of local organization is strengthened in favourable mirror post surrounding tissue hypertrophy and thickening.Interim mirror post is filled out core 8 and is adopted the good biomaterial of the colored compatibility to make, and is beyond recognition the difficulty with the locating support center in the time of can effectively solving secondary operation, and it is convenient and quick that the mirror post is implanted.Can significantly improve the accuracy and the safety of artificial cornea operation, prevent to leak and carriage center is located the severe complication that inaccurate grade causes.

7. support standing part 2 can further be strengthened the adhesive ability of histocompatibility and cell tissue by plasma treatment or biomaterial bag quilt or formation finishing of hydroxyapatite plated film and processing layer, improves artificial cornea's stability.

8. connecting ring 3 is by divide 1 identical biomaterial to make with central optic, can increase watertightness by connecting ring 3, reduce the stability of postoperative seepage reinforcing mirror post, and make things convenient for the mirror post to reach the operation of adding core temporarily.

Claims

1. novel split type artificial cornea, comprise central optic branch (1) and be located at peripheral standing part (2), it is characterized in that: be provided with connecting ring (3) between described central optic branch (1) and the standing part (2), central optic branch (1) and standing part (2) are connected as a single entity by screw thread (6) or connecting ring (3).

2. novel split type artificial cornea according to claim 1 is characterized in that: described central optic branch (1) is that central optical frames post or interim mirror post are filled out core (8), and described standing part (2) is the button loop shape support fixed structure of individuation.

3. novel split type artificial cornea according to claim 2 is characterized in that: described button loop shape support fixed structure closes the button loop structure at least two ring-types.

4. novel split type artificial cornea according to claim 2 is characterized in that: described button loop shape support fixed structure is at least two sector structures, and flabellum is provided with hole (4), and the diameter of hole (4) is 0.2-2mm.

5. novel split type artificial cornea according to claim 2 is characterized in that: the surface of described button loop shape support fixed structure is provided with finishing and the processing layer by plasma treatment or biomaterial bag quilt or hydroxyapatite plated film.

6. novel split type artificial cornea according to claim 1 and 2 is characterized in that: described central optic branch (1) is multistage cylindrical-shaped structure.

7. novel split type artificial cornea according to claim 6 is characterized in that: described multistage body diameter is 2.2mm-3.2mm, and length is 2.4mm-5.0mm.

8. novel split type artificial cornea according to claim 6, it is characterized in that: be provided with screw thread (6) in the middle of the described multistage cylinder and be connected with standing part (2) or connecting ring (3), described reach is 0.5mm-2.0mm, and it comprises that also part can be a little more than the front portion 5 of anterior surface of cornea and the part 7 of charging into the anterior chamber.

9. novel split type artificial cornea according to claim 6, it is characterized in that: the front surface of described central optical frames post has certain refractive power, and front surface or front end side are provided with aperture or groove.

10. novel split type artificial cornea according to claim 1 and 2, it is characterized in that: described interim mirror post is filled out core (8), and good biomaterial is made with the color compatibility is arranged, and has the screw thread (6) identical with central mirror post and suitably exceeds the planar front portion of support (5).