CN2297182Y

CN2297182Y - Myopic therapeutic equipment by pressing eyelid contact lens

Info

Publication number: CN2297182Y
Application number: CN 97209128
Authority: CN
Inventors: 王平
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-08
Filing date: 1997-05-08
Publication date: 1998-11-18
Anticipated expiration: 2007-05-08

Abstract

The utility model relates to a myopia curing device by pressing eyelid contact lenses, which is composed of an imitated face-shaped frame, and permeability contact lenses of which the curvature radius is larger than corneal curvature radius of each cornea, wherein the imitated face-shaped frame is connected with a fixing plate with four corners, spiral pipes are fixed on the fixing plate, and eyelid pressing pipes are arranged in the spiral pipes. The eyelid pressing pipes press the contact lenses according to the elasticity of the springs in the two spiral pipes. Each contact lens is divided into a cornea part, a joint part, a sclera part, a tilting part, an edge part, a convex part and a ring-shaped part. The utility model can not only cure general myopia, but also can cure regular astigmatism or irregular astigmatism, has the design of the contact lenses with high permeability at the same time, and can prevent the cornea damage caused by the oxygen deficiency of corneas.

Description

Press eyelid contact lens myopia device

This utility model relates to a kind of pressure eyelid contact lens myopia device.

92228208.0) and " contact lens elastic press type myopia device " (patent No.: 94229638.9) be and adopt contact lens to press the therapeutic apparatus of the treatment myopia of cornea Chinese patent " contact mirror myopia the device " (patent No.:." contact mirror myopia device " needs to use air exhauster owing to want the vacuum suction eyeball, makes that the therapeutic apparatus cost is higher, and it is also not too convenient to use, and owing to the structure of mirror body is special, and it is very uncomfortable to wear the time spent." contact lens elastic press type myopia device " can change the pressure of contact lens corneal arbitrarily, it is to see distant objects that the time spent is worn in treatment, the contact lens center is contacted with corneal vertex, can make cornea towards stable direction distortion, sit but must take time when the characteristics of this therapeutic apparatus are treatment, not only influence working and learning, eyeglass is cumbersome with connecting of spring during manufacturing, and it is also not too convenient specifically to wear time spent operation.United States Patent (USP) " eyelid press contacts mirror " myopia therapeutic apparatus, it is more comfortable to wear the time spent, but the pressure that increases the eyeglass corneal just must increase the thickness of eyeglass, this will make contact lens lose breathability, diminish cornea, and because lens edge must be done thinlyyer, eyes could adapt to, therefore the increase of lens thickness is limited, and this is limited with regard to making contact lens press the pressure of cornea.Eyelid itself is exactly loose in fact, so not necessarily can both satisfy the required pressure of each eye, it is keeping not ideal aspect the relative position between eyeglass and cornea in addition, be that vertex of surface not necessarily always contacts with corneal vertex in the eyeglass, the distortion of two periods mutually offsets before and after can making, and does not do a good job in also can make cornea to produce irregular astigmatism.

The purpose of this utility model is to overcome the deficiency of above-mentioned therapeutic apparatus, provide a kind of myopia axis oculi that can change long and corneal curvature radius is too small and can guarantee the required oxygen supply of cornea, even anterior corneal surface dimensionally stable,, thereby make myopia or astigmatism recover easy to use safe, simply constructed pressure eyelid contact lens myopia device normal, bent light state safely towards contact lens inner face direction distortion.

This utility model is achieved in that this product is combined by imitating shape of face frame and the radius of curvature breathability contact lens greater than corneal curvature radius.The other herringbone frenulum that is provided with of imitative shape of face frame, and connected one four foot fixing head on it, the degree of crook of four feet of fixing head can change, the hole that screwed pipe passes on the fixing head is fixed on the fixing head by two nuts, and eyelid-pressing tube is loaded in the screwed pipe, and it presses the eyelid end that four breach are arranged, also be equipped with in the screwed pipe and bend the less spring of strong coefficient, the spring front end is blocked by the adjust blood pressure piece, and eyelid-pressing tube is withstood in the rear end, gets in touch by screw thread between adjust blood pressure piece and screwed pipe.

Contact lens is divided into cornea portion, junction surface, sclera portion, warping part, edge part, lobe and cannelure.Cornea portion inner face radius of curvature is 7.7～8.0mm, diameter 10.5～11.5mm, thickness 0.1～0.2mm, sclera portion inner face radius of curvature is 11.5～12.5mm, diameter is 19～20mm, sclera portion periphery is the warping part, edge part then is slick and sly, the junction surface is the bound fraction of cornea portion and sclera portion inner face, is the middle curved surface of curvature between cornea portion curvature and sclera portion curvature, and coverage is between diameter 11～13mm, the changeover portion of cornea portion and sclera portion outer surface is a lobe, this segment thickness is 1.6～1.8mm, and lobe forms a ring annular groove at the eyeglass outer surface, and whole adherent lens diameter is 20～21mm.

Below in conjunction with drawings and Examples this utility model is described in detail.

Fig. 1 is the vertical view of this utility model.

Fig. 2 is the front elevation of the imitative shape of face frame of this utility model.

Fig. 3 is the side view when wearing with this utility model.

Fig. 4 is a profilograph of the present utility model, comprises eyelid, contact lens, the sketch map of eyeball on this vertical section;

Fig. 5 is this utility model contact lens shaft section figure.

This utility model is combined by imitating shape of face frame (1) and the radius of curvature breathability contact lens (2) greater than corneal curvature radius.The other herringbone frenulum (3) that is provided with of imitative shape of face frame (1), and connected one four foot fixing head (4) on it, fixing head (4) adopts light aluminum alloy or heat fixation plastics to make, the degree of crook of (4) four feet of fixing head can change, and regulates the vertical position of eyelid-pressing tube (7) press contacts mirror (2) with this.The hole that screwed pipe (5) passes on the fixing head (4) is fixed on the fixing head (4) by two nuts (6), and eyelid-pressing tube (7) is loaded in the screwed pipe (5), and it presses the eyelid end that four breach are arranged; Stretch out the length of imitative shape of face frame (1) and the distance between two eyelid-pressing tubes (7) by adjusting nut (6) scalable eyelid-pressing tube (7), promptly controlled the lateral attitude of eyelid-pressing tube (7) press contacts mirror.So eyelid-pressing tube (7) presses the vertical, horizontal position of eyelid all to be under control, and when therefore wearing this therapeutic apparatus, corneal vertex and contact lens is centered close on eyelid-pressing tube (7) central axis, has prevented the cornea unusual deformation.Be equipped with in the screwed pipe (5) and bend the less spring (8) of strong coefficient, spring (8) front end is blocked by adjust blood pressure piece (9), eyelid-pressing tube (7) is withstood in the rear end, to produce the pressure of eyelid-pressing tube to eyelid, get in touch by screw thread between adjust blood pressure piece (9) and screwed pipe (5), therefore available screwdriver is twisted the pressure that adjust blood pressure piece (9) regulating spring (8) is pressed eyelid-pressing tube (7), and promptly scalable contact lens (2) is pressed the pressure of cornea.

Contact lens (2) is divided into cornea portion (a), junction surface (b), sclera portion (c), warping part (d), edge part (e), lobe (f) and cannelure (g).Cornea portion (a) inner face radius of curvature is 7.84mm, and diameter 11mm, thickness are 0.1mm; Contact lens sclera portion (c) inner face radius of curvature is 11.8mm, diameter 19mm; Sclera portion (c) periphery is warping part (f), and the purpose of design warping part is in order to prevent that lens edge from weighing sclera wounded; Lens edge portion (e) is slick and sly, also is to prevent to weigh wounded sclera; The junction surface of eyeglass (b) is the bound fraction of cornea portion (a) and sclera portion (c) inner face, is the middle curved surface of curvature between cornea portion (a) curvature and sclera portion curvature (c), and coverage is between diameter 11～13mm.In the cornea portion of eyeglass outer surface and the changeover portion of sclera portion is lobe (f), lobe forms a ring annular groove (g) at the eyeglass outer surface, one circle air ring is arranged between eyeglass and eyelid in the time of can making Dai Jing close one's eyes eyelid, the intra-annular gas of air can exchange with outside air mutually by the eyelid seam, guaranteed the supply of cornea oxygen, whole optic diameter is 20mm.

Be after eyes are put on the contact lens of radius of curvature greater than the cornea radius of curvature in the use, close eyes, the eyelid of putting on this therapeutic apparatus again installs outward, and the attitude sleep keeps lying on the back, why be that to lie on the back be because side sleeps and can distort therapeutic apparatus, influence the appropriate location of contact lens pressure cornea.Press eyelid that power is passed to contact lens by the eyelid-pressing tube on the outer device of this therapeutic apparatus eyelid, make corneal distortion with such method, wear for a long time with cornea shape is shortened towards the distortion of contact lens inner face direction, axis oculi, eyeball is out of shape to emmetropia shape direction.Because eyelid-pressing tube presses the position of eyelid all can regulate as required in longitudinal and transverse two directions, so guaranteed that contact lens center and corneal vertex are on the eyelid-pressing tube central axis, and the eyelid-pressing tube port design is a ring-type, the port of eyelid-pressing tube is bigger than contact lens outer surface recess diameter, therefore eyelid-pressing tube can be preferably fixing contact lens, make the pressure distribution of contact lens corneal all directions even, and unlikely allow contact lens on anterior corneal surface, slide arbitrarily to make before and after the deflections of two periods cancel each other.Therefore,, anterior corneal surface dimensionally stable ground will be out of shape towards the emmetropia direction, and can cause the deflection of two periods before and after the cornea to cancel each other or the astigmatism of prism effect is arranged because this therapeutic apparatus has guaranteed the uniformity of contact lens " malleation " cornea power.

Contact lens is a sclera type eyeglass, adopts hard contact lens,gaspermeable material to make.Its each several part is of a size of: cornea portion inner face radius of curvature is 7.84mm, diameter 11mm, thickness is 0.1～0.2mm, can make eyeglass have higher breathability, reason is not treated myopia and is caused corneal injury, to here perhaps the someone can ask: cornea portion thickness is 0.1～0.2mm, cornea portion will be softer so, when eyeglass is pushed down cornea, is interior shape when the shape of anterior corneal surface is not pressed cornea with eyeglass the same? (proof: that answer is yes though because eyeglass cornea portion is very thin also softer, but it is the pressure that produces corneal by the pulling force of diagonal angle, junction surface membranous part, and promptly eyeglass cornea portion inside is stretch-proof.Suppose that at first eyeglass pressure cornea hour angle membrane portions peripheral surface can not touch the eyeglass inner face, we increase the pressure of eyeglass corneal, will make the whole outer surfaces of cornea touch the eyeglass inner surface; Can imagine in addition and obtain, when making the whole outer surfaces of cornea touch eyeglass cornea portion inner face, the pressure on eyeglass corneal surface is very little, therefore this power can only make that eyeglass cornea portion is inner to produce very small stretcher strain, and the curvature of face can be approximately equal to the curvature of eyeglass when not being out of shape in the eyeglass cornea portion.So in the time of can making contact lens press eyeball, the interior shape the when shape of cornea outer surface is not pressed cornea with eyeglass is similar to the same, and cornea all surfaces and eyeglass inner face keep in touch).So, we can say when exerting pressure with this contact lens corneal, can make cornea remain on the bigger state of radius of curvature.

In addition, contact lens sclera portion inner face radius of curvature is 11.8mm, and diameter is at 19mm, sclera portion periphery is the warping part, the purpose of design warping part is in order to prevent that lens edge from weighing sclera wounded, and lens edge be a slyness, also be to prevent to weigh wounded sclera, whole optic diameter is 20mm.The junction surface of eyeglass is the bound fraction of cornea portion and sclera portion inner face, is the middle curved surface of curvature between cornea portion curvature and sclera portion curvature, and coverage is between diameter 11～13mm.In the cornea portion of eyeglass outer surface and the place, joint portion of sclera portion inner face lobe is arranged, this segment thickness is 1.6～1.8mm, lobe forms a ring annular groove at the eyeglass outer surface, one circle air ring is arranged between eyeglass and eyelid in the time of can making Dai Jing close one's eyes eyelid, because cannelure and last palpebra inferior seam intersect, air in the cannelure is exchanged mutually with outside air, guaranteed oxygen concentration of air in the cannelure.

The using method of this therapeutic apparatus:

After putting on this utility model contact lens, put on eyelid again and install outward, the attitude sleep that keeps lying on the back was treated in about two hours.

About two hours of rising when preferably every night is sleeping of wearing time promptly sleepingly must take down therapeutic apparatus after back about two hours, and doing like this is in order to make eyes before morning be arranged several hours time of having a rest.

This utility model not only can be treated general myopia, also can treat regular astigmatism or irregular astigmatism.And the specially designed contact lens of this therapeutic apparatus has breathability, makes can not cause corneal injury because of the cornea anoxia in treatment myopia.

Claims

1. press eyelid contact lens myopia device for one kind, it is characterized in that it is combined by imitating shape of face cabinet and the radius of curvature breathability contact lens greater than corneal curvature radius, the other herringbone frenulum that is provided with of imitative shape of face frame, and connected one four foot fixing head on it, the degree of crook of four feet of fixing head can change, the hole that screwed pipe passes on the fixing head is fixed on the fixing head by two nuts, eyelid-pressing tube is loaded in the screwed pipe, it presses the eyelid end that four breach are arranged, also be equipped with in the screwed pipe and bend the less spring of strong coefficient, the spring front end is blocked by the adjust blood pressure piece, and eyelid-pressing tube is withstood in the rear end, gets in touch by screw thread between adjust blood pressure piece and screwed pipe; Contact lens is divided into cornea portion, the junction surface, sclera portion, the warping part, edge part, lobe and cannelure, cornea portion inner face radius of curvature is 7.7～8.0mm, diameter 10.5～11.5mm, thickness 0.1～0.2mm, sclera portion inner face radius of curvature is 11.5～12.5mm, diameter 19～20mm, sclera portion periphery is the warping part, edge part then is slick and sly, the junction surface is the bound fraction of cornea portion and sclera portion inner face, be the middle curved surface of curvature between cornea portion curvature and sclera portion curvature, coverage is between diameter 11～13mm, and the changeover portion of the outer surface of cornea portion and sclera portion is a lobe, and this segment thickness is 1.6～1.8mm, lobe forms a ring annular groove at the eyeglass outer surface, and whole adherent lens diameter is 20～21mm.