KR102061813B1 - Contact lens with suction function and jig for contact lens making - Google Patents

Abstract

The present invention relates to a contact lens. According to an embodiment of the present invention, the contact lens is formed as a curved surface and includes: an inner surface coming into contact with a cornea; and an outer surface which does not come into contact with the cornea. The contact lens also includes: at least a tear circulation path formed in a ring shape along the circumference of the inner surface, wherein the tears are supplied and circulated along a path of the tear circulation path; and at least a discharge groove formed on the inner surface and connected to the tear circulation path to transport and discharge the tears to the outside. The tear circulation path or the discharge groove has at least a suction hole. The at least a suction hole discharges all the tears to the outside by contraction of the outer surface when an eyelid is closed. Also, the at least a suction hole draws tears inside by the return of the outer surface. The contact lens has a suction function and also performs a function of discharging most of the tears flowing inside through the discharge groove installed around the lens along the tear circulation path and the discharge groove.

Description

Contact lens with suction function and jig for contact lens making}

The present invention relates to a contact lens and a jig for manufacturing a contact lens, and more particularly, a contact lens and a contact lens having a suction function for facilitating the introduction and discharge of tears to continuously supply tears to the cornea. It relates to a manufacturing jig.

Generally, soft contact lenses commercially available to the public are mounted on the front of the cornea to correct vision, and are widely used for securing a wider field of view than glasses and for convenience of cosmetic purposes and activities.

These soft contact lenses are made with a larger diameter (10.00 to 10.50mm cornea, 14.00 to 15.00mm cornea) than the cornea to maintain a stable corneal attachment and comfortable fit of the lens when worn on the human eye. The contact of the tears of the cornea is blocked, and thus the supply of various metabolism in the tears is interrupted, thereby lowering the physiological function of the cornea and causing various side effects.

The conventional soft contact lens has been attempted to solve the method of increasing the water content of the lens for contacting the cornea of the tear, but due to the characteristics of the conventional soft contact lens by the osmotic pressure function of the initial function of the tear is in close contact with the cornea to lose the discharge function, There was a problem that the functionality is reduced because tears are fixed and wear is not possible to allow the introduction of new tears.

As a technique to solve these problems, advance technologies have been attempted to realize the direct inflow of tears, the circulation of inflowed tears, and the discharge of circulated tears by forming through-holes and circulation paths in soft contact lenses. This possible contact lens only introduces a small amount of tears inside the narrow through hole, so that circulation and discharge are small, and there is a limit that circulation and discharge are not easy, thereby reducing the intended effectiveness.

The cornea is the only avascular tissue in the human body, unlike the human body in which all metabolic supply is through blood vessels, various metabolic supply by tears is responsible for more than 90%. Thus, sufficient corneal contact of tears is essential for maintaining normal function of the cornea.

Therefore, various side effects and the like caused by most conventional soft contact lenses are removed by the soft lens, and the natural healing without special treatment or treatment is because the corneal contact of sufficient tear is made and various metabolic supplies are made.

Therefore, in order to solve the above problems, the tear supply and discharge to the cornea is increased by the tear circulation, and the situation is required to manufacture a contact lens that is easy to supply and discharge tears.

Republic of Korea Patent Registration No. 10-1593934 (2016.02.16.Registration)

The present invention has been made in order to solve the above-mentioned problems, the contact lens and the contact lens for the increase in the circulation of the tear through the inlet and discharge of the tear inlet suction hole for supplying a large amount of tear cornea for preventing eye disease To provide a jig for that purpose.

In addition, another object of the present invention is to provide a contact lens manufacturing jig capable of manufacturing a contact lens with increased tear circulation through suction inflow enhancement and discharge of a suction hole.

In the contact lens having a suction function according to an embodiment of the present invention, the contact lens is formed in a curved surface and includes an inner surface contacting the cornea and an outer surface not contacting the cornea, and having a ring shape along the circumferential direction of the inner surface. At least one tear circulation, which is formed and is supplied with tears and circulated along the path; It is formed on the inner surface, and in communication with the tear circulation path includes at least one discharge groove for transporting and discharging the tear to the outside, the tear circulation or discharge groove is contracted in the closed eye, and restored to the lens outer surface by restoring when opening At least one suction hole is formed to introduce the generated tears, and the discharge groove is formed so as not to open the inner surface, and a discharge hole through which tears are discharged is formed on one side.

The suction hole is formed on both sides of the suction hole on the inner surface of the suction hole, so that the outer surface is contracted when closed eyes, tears flow into the interior by restoring the outer surface when opening the eyes, the inside of the suction hole It is characterized in that the tapered to be narrowed toward the outside from the inner surface.

In the jig for manufacturing a contact lens according to an embodiment of the present invention, in the jig for manufacturing a contact lens having a male shape in which a male jig is inserted into a male jig for forming a contact lens having a curved surface to be in contact with the cornea, the female jig The main body portion having a convex surface formed on the upper portion so that the contact lens has a hemispherical shape; An annular protrusion protruding from the convex surface to form a tear circulation path for supplying and circulating tears on the inner surface of the contact lens; A radial protrusion protruding from the convex surface to form a discharge groove and a discharge hole through which the tear is transferred and discharged to the outside in communication with the tear circulation path; At least one punching part protruding from the annular projection or the radial projection to form a suction hole for introducing or discharging tears on the inner surface of the contact lens.

In the above, the punching portion has a column shape protruding above the convex surface and a protrusion formed to be narrower toward the top; The lower portion of the protrusion further comprises a connecting portion joined to the annular projection or the radial projection and the convex surface, characterized in that the connecting portion is formed in a curved shape having a gentle slope.

In the above, the annular projection further comprises a joint portion bonded to the convex surface, the radial projection further comprises a coupling portion bonded to the convex surface, the joint portion and the coupling portion in a curved shape having a gentle slope Characterized in that made.

The contact lens of the present invention forms a tear circulation path and a discharge groove on the inner surface of the contact lens so that the tear circulation is increased, and by forming a plurality of suction holes for enhancing tear inflow, tear collection is easy, and tears enhanced on the cornea By continuously supplying and contacting, there is an advantage that can prevent side effects due to wearing the lens.

In addition, the present invention is a contact lens wearer is the first edge portion formed in the tear circulation path on the inner surface of the contact lens in contact with the cornea, the second edge portion formed in the suction hole and the third edge portion formed in the discharge groove rounded to the mold core of the jig It has the advantage of eliminating foreign body feelings and preventing corneal damage.

In addition, the jig for manufacturing a contact lens of the present invention has a columnar shape protruding upward and a punching part including a protrusion formed to be narrower toward the upper part is provided in the magnetic jig to taper the inside of the suction hole, thereby preventing damage in the manufacturing process. It can have the effect of significantly reducing the rate.

1 is a view showing the inner surface of a contact lens according to an embodiment of the present invention.
2 is a cross-sectional view of the contact lens of FIG. 1.
3 is an enlarged cross-sectional view illustrating a suction hole and an inflow opening of a conventional contact lens and the contact lens of FIG. 1.
4A is a view for explaining the contraction function of the suction hole of the contact lens of FIG. 1, and FIG. 4B is a view for explaining the restoration function of the suction hole of the contact lens of FIG.
5 is a view showing a comparison between a conventional contact lens and the first edge portion of the present invention.
6 is an enlarged cross-sectional view of the third edge portion of the present invention.
7 is a view showing a male jig and male jig according to an embodiment of the present invention.
FIG. 8 is an enlarged view of the jig of FIG. 7.
FIG. 9 is an enlarged view of the punching part 'A' of FIG. 8.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention may deteriorate other inventions or the present invention by adding, modifying, or deleting other elements within the scope of the same idea. Other embodiments that fall within the scope of the inventive concept may be readily proposed, but they will also be included within the scope of the inventive concept.

In addition, the components with the same functions within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

The contact lens 100 of the present invention will be described in detail with reference to FIGS. 1 to 6, wherein the contact lens 100 is formed as a curved surface and includes an inner surface 101 contacting the cornea and an outer surface 102 not contacting the cornea ( As 100, as shown in Figure 1, at least one tear circulation path 110 and the discharge groove 140 further comprises.

The tear circulation path 110 is formed in a ring-shaped groove along the circumferential direction of the inner surface 101 when viewed in plan view, so that tears are supplied and circulated along the path.

Discharge groove 140 is in communication with the tear circulation path 110 on the inner surface 101 is formed as a straight groove on the inner surface 101 to transfer the tear and discharge to the outside.

At this time, the discharge groove 140 is formed on the inner side of the inner surface 101 so as not to open to the edge of the inner surface 101, the discharge groove 140 is formed along the discharge groove 140 by forming the discharge hole 141 The conveyed tears are discharged through the discharge hole 141.

The reason for limiting the discharge groove 140 is not formed at the edge of the inner surface 101 in this way is that the durability is weakened due to the thinner thickness of the inner surface 101 edge when the discharge groove 140 is formed to the edge of the inner surface 101 This is because the contact lens 100 may be damaged or torn.

In addition, the discharge groove 140 is a straight groove, a plurality of intervals are formed at intervals so that the discharge of the tear is easily discharged to form a radial as shown in FIG. Further, the end of the discharge groove 140 is preferably reverse blended so that there is less foreign matter in the portion where the cornea contacts.

In addition, the tear circulating path 110 or the discharge groove 140 contracts around the outer surface when the eyes are closed by the eyelids, and tears generated from the outer surface of the lens by restoring when the eyes are opened by the eyelids. At least one suction hole 120 is formed to force inflow (collection).

In particular, the suction hole 120 is formed on both sides of the suction hole 120 on the inner surface 101 of the contact lens 100, and the inlet through-holes 130 are formed on both sides thereof, so that the contact hole 120 is closed. It assists the contraction of the outer surface 102 of the lens 100 and allows tears to flow into the interior by restoring the outer surface 102 when opening the eye.

That is, as shown in FIG. 4A, the inlet through-hole 130 is formed on the inner surface 101 of the contact lens 100 around the suction hole 120. In a contracted state, the tear hole is forced to flow into the suction hole 120 in the contracted form.

In addition, as shown in Figure 4b, the outer surface 102 in a contracted state is the tension of the eyelid that was pressing the outer surface 102 at the time of opening the eye disappears and is returned to its original shape by the restoring force, tears located on the outer surface 102 The large amount may be introduced, and part of the tears introduced into the inner surface 101 may be partially discharged toward the outer surface 102 through the suction hole 120 by the restored force. Most are discharged through the discharge hole 141 through the tear circulation path 110 and the discharge groove 140.

In addition, the inlet opening 130 formed at both sides of the suction hole 120 has a width that is greater than twice as wide as that of the tear circulation path 110 formed, and the depth is preferably formed to be at least half the thickness of the lens. , The reason is to facilitate the contraction and restoration of the outer surface 102 by the tension of the eyelid around the suction hole (120).

The eyelid of the human body shows about 40 to 50 blinks per minute, which is proportional to the amount of tears generated.

That is, tears are pumped every time the blinking phenomenon of the eyelids occurs, and this phenomenon is caused by the eyelids stimulating the cornea when blinking, and the contact lens 100 with increased tear circulation of the present invention has the inflow and discharge of tears blinking of the eyelids. By forming the suction hole 120 to be freely made according to the degree.

In addition, the inflow opening 130 may be formed by reverse blending the mold core of the jig for manufacturing a contact lens, which will be described later, and serves to reduce foreign matter on the portion where the cornea contacts. Here, reverse blending means that, unlike the blending process, the rounded portion of the mold core is rounded so that a sharp edge (or corner) is smoothly formed so that a convex surface and a concave surface are connected to form a single 'S' shape. It can be said that the process.

In more detail, the reverse blending process is a process of rounding the outer circumference of the suction hole 120, as shown in the cross-sectional view of FIG. 3, in the direction of the suction hole 120 at one side of the tear circulation path 110. It means to form a smooth curved surface by forming a rounded inlet opening 130 so that the second edge portion 131 of the suction hole 120 is convex.

That is, the second edge portion 131 which is not subjected to reverse blending may be sharply formed, which may cause abrasions to the cornea when it comes into contact with the cornea, but the second edge portion 131 that has undergone reverse blending has an 'S' shape. It is formed in the curved surface of the cornea does not give foreign body contact with the cornea, and can smooth the tear circulation.

Similarly, since the first edge portion 112b formed in the tear circulation path 110 and the third edge portion 142 formed in the discharge groove 140 also correspond to portions that come into contact with the cornea, the reverse blending treatment is performed by the wearer of the contact lens 100. It can also remove foreign bodies and prevent corneal damage. That is, as shown in FIG. 5, the conventional first edge portion 112a may have an angular edge to damage the cornea, but the first edge portion 112b of the present invention may be manufactured as a contact lens. It is formed by the reverse blending process of the molten jig (mould core), and corneal damage can be prevented.

Furthermore, the suction hole 120 and the inflow opening 130 may be formed in plural at intervals in the discharge groove 140.

Meanwhile, the inside of the suction hole 120 may be formed to be tapered to become narrower toward the outside from the inner surface 101 of the contact lens 100. That is, the taper 150 may be formed inside the suction hole 120. .

That is, the diameter is formed so that the width becomes narrower toward the upper side, and the reason for forming in this way is that when the suction hole 120 is formed by the contact lens manufacturing jig of the present invention, the contact lens 100 of the elastic material by punching This is to reduce the damage in the manufacturing process by taper punching because of the possibility of tearing or breaking.

The jig for manufacturing a contact lens of the present invention will be described in detail with reference to FIGS. 7 to 9, and the shaped jig 200 is formed in order to mold the contact lens 100 having a curved surface to be in contact with the cornea as a mold core having a male shape. ) Is inserted into the male jig 300.

As shown in FIG. 8, the jig 200 further includes a main body 210, an annular protrusion 220, a radial protrusion 240, and a biasing part 230.

The main body 210 forms a convex surface on the upper side of the contact lens 100 to form a hemispherical shape.

The annular protrusion 220 protrudes from the convex surface to form the tear circulation path 110 for supplying and circulating tears on the inner surface 101 of the contact lens 100. In addition, the annular protrusion 220 further includes a joint (not shown) joined to the convex surface.

The radial protrusion 240 is formed to protrude on the convex surface to communicate with the tear circulation path 110 so as to form a discharge groove 140 for transferring the tear and discharging to the outside. In addition, the radial protrusion 240 further includes a coupling part (not shown) joined to the convex surface.

Here, the joint portion and the coupling portion are formed in a curved shape having a gentle inclination, and are formed in the mold core of the magnetic jig 200 in order to reverse blending so that there is no foreign matter on the cornea when manufacturing the contact lens 100.

The punching unit 230 protrudes into the annular protrusion 220 or the radial protrusion to form a suction hole 120 for introducing or discharging tears into the inner surface 101 of the contact lens 100, and forms a plurality to discharge the tears. It is distributed in multiple directions to facilitate discharge.

Furthermore, the punching part 230 further includes a protrusion 231 and a connection part 232 as shown in FIG. 9.

The protrusion 231 may be formed in a pillar shape protruding upward from the convex surface, and in particular, may be formed to be narrower toward the top thereof, such that the suction hole 120 of the contact lens 100 may be tapered. In addition, the breakage rate of the lens may be significantly reduced when the suction hole 120 is formed by the punching process of the protrusion 231.

The connecting portion 232 may be joined to the convex surface of the lower portion of the protrusion 231 with the annular protrusion 220 or the radial protrusion, and the connecting portion 232 may be gently inclined at the surface to be joined together with the above-described joint portion and the coupling portion. The second edge portion 131 is formed to have a curved shape, and the reverse blending process may be performed so that there is no foreign object on the cornea when the contact lens 100 is manufactured. In addition, it is preferable that the mold core of the female jig 200 in which the connection part 232 is located is manufactured to enable the reverse blending process of the curved shape.

Furthermore, according to an embodiment of the present invention, the tear circulation path 110 is formed in two lines, the suction hole 120 and the inlet opening 130 are formed at four places, and the contact grooves are formed at the four discharge grooves 140. (100) was prepared.

In Comparative Example 1, a tear circulation path was formed in one line, and a contact hole having three suction holes was manufactured. In addition, in Comparative Example 1, the suction hole was prepared without blending.

In another comparative example 2, a contact lens having no tear circulation, suction hole, and no discharge groove was manufactured.

Using the contact lens 100 prepared as described above and Comparative Examples 1 and 2, the sensory evaluation was performed for the comparative experiments on the tear circulation capability and foreign matter, and the results are shown in the following [Table 2]. The sensory test was carried out to observe the state after wearing the contact lenses of the subjects shown in the comparative experiments, and the sensory test was conducted on 30 contact lens users, the score and evaluation criteria were used five-point scoring method, in [Table 1] below Indicated.

 score  Evaluation standard  5  Very good  4  good  3  usually  2  Bad  One  Very bad

 Test Example  Circulatory ability  Foreign body improvement  The present invention  5  4  Comparative Example 1  3  2  Comparative Example 2  One  3

100: contact lens 101: inner
102: exterior
110: tear circulation path 112a, 112b: first edge portion
120: suction hole 130: inlet
131: second edge portion 140: discharge groove
141: discharge hole
142: third edge portion 150: taper
200: shape jig for manufacturing contact lens 210: main body
220: annular protrusion 230: punching part
231: protrusion 232: connection
240: radial projection 241: joint
242: coupling 300: male jig for manufacturing contact lenses

Claims (5)

In the contact lens formed of a curved surface comprising an inner surface and the outer surface that is not in contact with the cornea,
At least one tear circulation path formed in an annular shape along the circumferential direction of the inner surface and supplied with tears and circulated along a path;
Is formed on the inner surface, and in communication with the tear circulation path includes at least one discharge groove for the tear is conveyed and discharged to the outside,
The tear circulation or discharge groove
At least one suction hole is formed to contract when closed eyes and to introduce tears generated on the outer surface of the lens by restoring when opening the eyes.
The discharge groove
A contact lens having a suction function, which is formed so as not to open the inner surface, and a discharge hole through which tears are discharged is formed at one side. The method of claim 1, wherein the suction hole
Inlet through-holes are formed on both sides of the suction hole on the inner surface, so that the outer surface is contracted when closed eyes, and tears are introduced into the interior by restoring the outer surface when opening eyes.
The inner side of the suction hole is a tapered contact lens, characterized in that the tapered so as to narrow toward the outside from the inner surface. delete delete delete

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