KR101090840B1 - Intraocular lens supporter and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an intraocular lens support. An intraocular lens support according to the present invention is a structure comprising a first surface that is an outer surface and a second surface that is opposite to the first surface, wherein the first surface includes a first front surface and a first rear surface. The first front face comprises a cross-sectional shape that takes a portion of the ellipse.

Eyeball, intraocular lens, cataract, intraocular lens, tension ring

Description

Intraocular lens supporter and manufacturing method thereof

The present invention relates to an intraocular lens support, and more particularly, to an intraocular lens support provided in a capsular sac to induce shape deformation of an intraocular lens.

As a treatment for ophthalmic diseases such as cataracts, the intraocular lens manufactured by removing the lens contents inside the capsular sac and artificially manufactured in the space. Surgery to insert a lot is currently being performed worldwide.

When an intraocular lens is inserted, the intraocular lens can replace the natural lens to provide a patient with a cloudy vision. However, the intraocular lens has a problem that the capsular sac into which the intraocular lens is inserted is contracted after the surgery after the intraocular lens is inserted despite the advantages.

Therefore, recently, a method of inserting a capsular tension ring in the equator region of the capsular sac and inserting the intraocular lens in the capsular tension ring has been gradually used before inserting the intraocular lens.

The capsular tensioning ring is an open or closed annulus, partially relieving the contraction of the capsular sac, retaining a part of the shape of the capsular sac with the lens lens removed, There is an effect of easily supporting the inserted intraocular lens.

Currently, research is being conducted on a structure for facilitating the insertion of the capsuler tension ring, a structure for preventing back capsule turbidity, etc. in order to use the capsuler tension ring more efficiently.

Korean Patent Registration Nos. 10-843454, 10-807939, and 10-807940, which have been filed and filed by the applicant, are among the achievements of this study. The outer surface of the intraocular lens support of the patent has a shape that transmits the force transmitted to the capsule color to the intraocular lens has a form suitable for three-dimensional stereoscopic motion.

Accordingly, while maintaining the basic technical idea, it has been developed an intraocular lens support that has a more effective three-dimensional movement, and can be efficiently produced according to the shape of the lens of various people.

SUMMARY OF THE INVENTION An object of the present invention is to provide an intraocular lens support which induces a shape deformation of an intraocular lens to induce an intraocular lens to have a motion similar to that of a natural lens.

Another object of the present invention is to provide a method for manufacturing an intraocular lens support, which is manufactured differently in various human lens shapes.

Intraocular lens support according to an aspect of the present invention is

A structure comprising a first surface that is an outer surface and a second surface that is opposite to the first surface,

The first surface includes a first front surface and a first rear surface, and the first front surface includes a cross-sectional shape of a part of an ellipse.

At this time, the first ellipse formed by extending the cross-sectional shape included in the first front surface may follow the elliptic equation of the following equation.

(단, 0<a≤5±2, 0<b≤1.6±1)

(0 <a≤5 ± 2, 0 <b≤1.6 ± 1)

In addition, the second front surface may include a cross-sectional shape taking a portion of the ellipse.

In addition, the second ellipse formed by extending the cross-sectional shape included in the first rear surface may follow the elliptic equation of the following equation.

(단, 0<c≤5.2±2, 0<d≤3.2±1, a≤c, b≤d)

(0 <c≤5.2 ± 2, 0 <d≤3.2 ± 1, a≤c, b≤d)

In addition, the first ellipse may be inscribed with the second ellipse.

In addition, the second surface may include a second front surface and a second rear surface, and the second front surface may include a cross-sectional shape of a part of an ellipse.

In addition, the third ellipse formed by extending the cross-sectional shape included in the second front surface preferably follows the elliptic equation of the following equation.

(0 <e≤3.6 ± 1, 0 <f≤2.6 ± 1, a> e> f)

In addition, the second rear surface may include a cross-sectional shape of a part of an ellipse (including a circle).

In addition, the fourth ellipse (including a circle) formed by extending the cross-sectional shape included in the second rear surface may follow an ellipse (including circle) equation of the following equation.

(0 <g≤3.6 ± 1, 0 <h≤3.6 ± 1, f≤h, a> g)

In addition, the thickness between the first surface and the second surface at the equator of the intraocular lens support is preferably 0.8 to 3mm.

In addition, the second surface is preferably provided with a concave surface to which the intraocular lens is fitted.

In addition, the thickness between the first surface and the second surface (concave surface) at the equator of the intraocular lens support is preferably 0.1 to 3 mm.

In addition, the second surface is preferably provided with a concave surface to which the intraocular lens is fitted.

In addition, the point where the first surface and the second surface meet is preferably made of a curved shape.

In addition, in the manufacturing method of the intraocular lens support comprising a first surface which is the other side of the present invention and a second surface that is opposite to the first surface,

A first step of measuring a human lens shape; And

The second step may include determining an ellipse including at least a part of the cross-sectional shape of the first surface by reflecting the value measured in the first step.

In addition, the first step is preferably made of a measurement using ultrasonic waves.

In addition, the value measured in the first step preferably includes the lens angle, size, thickness, curvature of the front and rear surfaces.

In addition, the shape of the ellipse in the second step is preferably determined to match the cross-sectional shape of the equator of the human lens.

In addition, after the second step, it is preferable to include a third step of determining the cross-sectional shape of the second surface.

The intraocular lens support according to the present invention has a shape of the specified outer and inner surfaces, and is generated from the ciliary muscle, and the eye is inserted into the capsular sac by the force transmitted through the zodiac and the capsular sac. By transmitting to the inner lens, there is an effect that the intraocular lens can operate as efficiently as the natural lens lens.

Therefore, the intraocular lens support according to the present invention can be applied to intraocular lens insertion surgery to treat cataracts, presbyopia, and high myopia.

In addition, the method for manufacturing an intraocular lens support according to the present invention has an effect of easily making intraocular lenses of various shapes according to the shape of the lens that is different for each person.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

1 is a perspective view of an intraocular lens support according to the present invention, Figure 2 is a cross-sectional view taken along the line II 'of FIG.

According to this, the intraocular lens support 100 includes a first surface 110 and a second surface 120, the first surface 110 and the second surface 120 forms a closed ring-shaped structure The film forming the first surface 110 and the film forming the second surface 120 have a predetermined thickness. In addition, a space (not shown) may be provided between the two membranes. In this case, the space may be an empty space or a space filled with a fluid material such as gas (air or inert gas) or liquid.

Since the intraocular lens support 100 is inserted into the equator plane inside the capsule color surrounding the lens, the first surface 110 is in contact with the inner surface of the capsule color, and the second surface 120 is the opposite surface. . Therefore, the diameter of the first surface 110 is approximately equal to the size of the inner diameter of the equator surface of the capsule color, and since the inner diameter of the capsule color is usually 10 ± 3mm, the diameter of the first surface 110 is the same. Level.

In order to induce a three-dimensional deformation of the intraocular lens, the first surface 110 of the intraocular lens support 100 preferably has the same shape as the inner surface of the capsule color. However, since the inner surface of the capsule color is very complicated, it is very difficult to manufacture the first surface 110 of the intraocular lens support 100 in the same shape, and the cost is excessive.

Accordingly, the front surface 111 and the rear surface 113 of the first surface 110 of the intraocular lens support according to the present embodiment are easy to manufacture, but each takes a portion of a different elliptical shape to have a shape similar to the lens. It is composed of shapes. In the following description, the front means a direction in which light enters into the lens when the lens is inside the capsule color, and the rear means the opposite direction.

The ellipse included in the front surface 111 of the first surface 110 is shorter in length than the ellipse included in the rear surface 113 of the first surface 110, the ellipse formed by the rear surface 113. Inscribed in This is to configure similar to the shape of the front face 111 and the rear face 113 of the lens to enter the actual capsule color.

On the other hand, the length of the first surface 110 is preferably provided with a length of at least 3/4 times to 3 times the length of the region connected to the outer surface of the capsule color in the cross-section cut along the virtual plane in the direction of the lens axial direction. . If it is formed smaller than 3/4 times, the force transmitted according to the movement of the bolus cannot be transmitted efficiently to the intraocular lens, and if it is formed more than 3 times, the optic part of the intraocular lens may be covered. Because. For example, the first surface 110 may have a length of 2 mm to 8 mm in a cross section obtained by cutting the structure along an imaginary plane in the lens axis direction.

The second surface 120 is determined to have a concave shape so as to efficiently transmit a force to the intraocular lens to be supported by the intraocular lens support. In particular, according to the size of the nucleus and cortex of the lens is formed in a concave shape at a position that does not exceed the nucleus section, the thickness between the first surface and the second surface at the equator is preferably 0.8 to 3mm.

At this time, as the thickness between the first and second surfaces becomes thicker, it is preferable to use the second surface as a softer material to more efficiently transfer the force to the intraocular lens.

3 to describe an example of defining the shape of the first and second surfaces in the intraocular lens support according to the above-described embodiment. 3 is a view showing a cross section of the intraocular lens support according to the present embodiment on the coordinates. According to this, the front surface 111 of the first surface 110 is a part of the first ellipse (H1) according to the following equation (1).

(0 <a≤5 ± 2, 0 <b≤1.6 ± 1, a> b)

At this time, the range is a range for reflecting the diversity of the diameter of the human lens, and reflects the shape of the front surface of the human lens.

The rear surface 113 of the first surface 110 takes a part of the second ellipse H2 according to Equation 2 below.

(0 <c≤5 ± 2, 0 <d≤2.6 ± 1, b≤d, c> d)

At this time, the range is a range for reflecting the diversity of the diameter of the human lens, and reflects the shape of the rear surface of the human lens.

The front surface 121 of the second surface 120 is a part of the third ellipse H3 according to Equation 3 below.

(0 <e≤3.6 ± 1, 0 <f≤2.6 ± 1, a> e> f)

At this time, the range is for determining the thickness and shape of the intraocular lens support.

The rear surface 123 of the second surface 120 is a part of the fourth ellipse (including a circle) H4 of Equation 4 below.

(0 <g≤3.6 ± 1, 0 <h≤3.6 ± 1, f≤h, a> g)

At this time, the above ranges are for determining the thickness and shape of the intraocular lens support.

The front surface 111 and the rear surface 113 of the first surface 110 is configured to take a portion of the first ellipse H1 and the second ellipse H2. That is, the first ellipse H1 is inscribed with the second ellipse H2 (contact point Q1), and a part of the first ellipse H1 in the positive direction of the y-axis is taken as the front face, and the y-axis is in the negative direction. Part of the second ellipse (H2) which is present in the rear surface is manufactured in a shape coupled to each other.

Thus, the first surface 110 has a rear surface 113 has at least the same or less convex shape at the equator portion of the lens than the front surface 111 and has a more convex shape toward the central portion of the lens, so It will have a similar shape.

The front surface 121 and the rear surface 123 of the second surface 120 are also configured to take the shape of each of the different ellipses. The third ellipse H3 is inscribed to the fourth ellipse H4, and a part of the third ellipse H3 that is above the contact point Q2 is taken as the front surface 121, and is located below the inscribed place. A part of the fourth ellipse H4 is formed into a shape in which the rear surface 123 is coupled to each other.

In this embodiment, the first ellipse H1 and the second ellipse H2 and the third ellipse H3 and the fourth ellipse H4 are in one embodiment. One change will be included.

Hereinafter, a second embodiment according to the present invention will be described. In the following embodiments, the same reference numerals are assigned to the components corresponding to the first embodiment. Also in this embodiment, the front surface 111 and the rear surface 113 of the first surface 110 of the intraocular lens support is formed in a shape taking a portion of each of the different ellipses, the front of the first surface 110 The ellipse included in the side surface 111 is shorter in length than the ellipse included in the rear surface 113 of the first surface 110. However, unlike the first embodiment, the front of the first surface 110 in a state in which the centers of the ellipses included in the front surface 111 of the first surface 110 and the ellipses included in the rear surface 113 do not coincide. An ellipse included in the face 111 is inscribed with an ellipse included in the rear face 113.

An example of determining the shape of the first surface 110 and the second surface 120 in the intraocular lens support according to the second embodiment will be described with reference to FIG. 4. 4 is a view showing a cross section of the intraocular lens support according to the second embodiment of the present invention on a coordinate.

In this first surface, the front surface 111 of the first surface 110 is a part of the first ellipse H1 of Equation 5 below.

(단, 0<a≤5±2, 0<b≤1.6±1)

(0 <a≤5 ± 2, 0 <b≤1.6 ± 1)

In addition, the rear surface 113 of the first surface 110 is a part of the second ellipse (H2) of the following equation (6).

(단, 0<c≤5.2±2, 0<d≤3.2±1, a≤c, b≤d)

(0 <c≤5.2 ± 2, 0 <d≤3.2 ± 1, a≤c, b≤d)

At this time, the ranges are for reflecting the diversity of the diameter of the human lens, and reflects the shape of the human lens.

On the other hand, the front surface 121 of the second surface 120 is a part of the third ellipse (H3) of the following equation (7).

(0 <e≤3.6 ± 1, 0 <f≤2.6 ± 1, a> e> f)

In addition, the rear surface 123 of the second surface 120 is a part of the fourth ellipse (including the circle) H4 of the following equation (8).

(0 <g≤3.6 ± 1, 0 <h≤3.6 ± 1, f≤h, a> g)

At this time, the above ranges are for determining the thickness and shape of the intraocular lens support.

According to this, the front surface 111 and the rear surface 113 of the first surface 110 is configured in a shape taking a portion of each of the different ellipses. The first ellipse H1 is inscribed to the second ellipse H2, and a part of the first ellipse H1 which is above the contact point Q3 is taken as the front face 111, and is located below the inscribed place. A part of the second ellipse H2 is formed into a shape in which the rear surface 113 is coupled to each other.

The front surface 121 and the rear surface 123 of the second surface 120 are also configured to take the shape of each of the different elliptical shape. The third ellipse H3 is inscribed to the fourth ellipse H4, and a part of the third ellipse H3 that is above the contact point Q4 is taken as the front surface 121, and is located below the inscribed place. A part of the fourth ellipse H4 is formed into a shape in which the rear surface 123 is coupled to each other.

In FIG. 4, the ellipses of Equations 7 and 8 illustrate a case where q = 0 and r = 0, but are not limited thereto, and p, q, and r may be positive or negative.

5 is a cross-sectional view of the intraocular lens support according to the third embodiment of the present invention.

The third embodiment differs in the shape of the second surface 120 of the intraocular lens support of the first or second embodiment. In the first embodiment and the second embodiment, the second surface 120 is composed of only a shape that takes a part of the third ellipse H3 and the fourth ellipse H4, but the second surface 120 of the present embodiment is It further includes a concave surface 125 in which the intraocular lens is easily inserted and in contact.

The shape of the concave surface 125 is preferably formed to correspond to the shape of the contact surface of the intraocular lens. For example, when the contact surface of the intraocular lens is a reduced shape of the first surface 110, the concave surface may be manufactured in a reduced shape of the first surface 110 to correspond to the contact surface of the intraocular lens. At this time, the type of intraocular lens employed is not limited.

6 is a cross-sectional view of the intraocular lens support according to the fourth embodiment of the present invention. The fourth embodiment is similar to the third embodiment in that a concave surface is formed, but the concave surface 127 is deeply formed so that the thickness between the first surface 110 and the second surface 120 is approximately 0.1 mm. The first surface 110 and the second surface 120 has a very thin feature. Thereby, the force can be transmitted more efficiently to the intraocular lens.

7 is a cross-sectional view of the intraocular lens support according to the fifth embodiment of the present invention.

The fifth embodiment is distinguished from the third embodiment by the point that the point where the first surface 110 and the second surface 120 meets smoothly. This is to prevent the first surface 110 and the second surface 120 from damaging the color of the capsule when injecting or using the intraocular lens support. It is preferable that the points formed by the first surface 110 and the second surface 120 meet and form a curve.

Hereinafter, a method of manufacturing an intraocular lens support according to another aspect of the present invention.

According to this, the manufacture of the intraocular lens support including the first surface which is the outer surface and the second surface which is opposite to the first surface comprises a first step and a second step.

Prior to fabrication of the intraocular lens support, reference is made to FIG. 8 for easier understanding of the present invention. 8 is a diagram illustrating a human human lens, in which the lens is composed of a nucleus, cortex, epithelium, and lens capsule, and the anterior face of the lens is less than the posterior lens. The convex shape is generally less convex at the central part of, and more convex at the equator part of the lens.

Since the shape of the lens varies from person to person, it is necessary to accurately measure the shape of the lens in order to manufacture a suitable intraocular lens support. In particular, the measurement of the angle of the lens is important in connection with the present invention. In this case, the angle of the lens refers to a portion where the front and rear surfaces of the lens meet near the equator. This is because it is the part that transmits the force transmitted from the zonule to the intraocular lens.

The first step is to measure the lens shape of the person (including the lens angle, size and thickness, and curvature of the front and back surfaces). FIG. 9 is an ultrasound picture of measuring a lens by ultrasound, through which information about the shape, such as angle, size, thickness, curvature of the front and rear surfaces of the lens, may be obtained.

The second step is determining the shape of the ellipse to be included in the cross-sectional shape of at least the first surface of the intraocular lens support by reflecting the value measured in the first step.

10 is a diagram for explaining a process for determining the shape of the front surface of the first surface of the intraocular lens support. According to this, first, an ellipse that most closely matches the front surface of the equator portion of the lens is selected, and the ellipse is determined as the first ellipse H1 to be included in the cross-sectional shape of the front surface of the first surface.

11 is a diagram illustrating a process for determining the shape of the rear surface of the second surface to be included in the intraocular lens support. An ellipse that most closely matches the posterior surface of the equator is selected and the ellipse is determined as the second ellipse H2 to be included in the cross-sectional shape of the rear surface of the first surface. In the drawing, the first ellipse H1 and the second ellipse H2 may be in contact with each other but may not be in contact with each other.

Part of the first ellipse H1 and the second ellipse H2 thus determined are included in the shape of the first surface of the intraocular lens support.

Meanwhile, the manufacturing of the intraocular lens support may further include a third step of determining the shape of the front and rear surfaces of the second surface. The second surface is determined in a concave shape so as to efficiently transmit a force to the intraocular lens to be supported by the intraocular lens support. At this time, the second surface is formed in a concave shape at a position not exceeding the section where the nucleus is located according to the size of the nucleus and cortex of the lens so that the thickness between the first and second surfaces at the equator is preferably 0.8 to 3 mm.

In particular, it is possible to determine a shape that takes a part of an ellipse or a circle according to Equations 3 and 4 as described above as an easier determination method of the second surface. (See Figs. 12 and 13).

On the other hand, when the additional concave surface is formed on the second surface (see FIGS. 5 and 6), as described above, it can be manufactured in a reduced shape of the first surface, in which case the first surface and the second surface at the equator The thickness between faces can be made smaller, so that the thickness can be 0.1 to 3 mm.

On the other hand, the intraocular lens support can be manufactured individually in a wide variety of shapes according to the shape of the human lens, but because of the excessive cost, various specifications are determined according to the size and shape of the human lens to determine the shape of the human lens. After measurement, the nearest standard can be adopted.

Although the present invention has been described primarily with reference to the above embodiments, many other possible modifications and variations can be made without departing from the spirit and scope of the invention. For example, the ellipse proposed in the embodiments of the present invention refers to an oval as an overall shape, and the shape of the ellipse substantially gives the roughness while maintaining the shape of the ellipse, or the shape of the ellipse, or the deformation including another shape in a part of the ellipse. It will belong to a variant that can be easily estimated by those skilled in the art.

The scope of the above-described invention is defined in the following claims, not bound by the description in the text of the specification, all modifications and variations belonging to the equivalent scope of the claims will fall within the scope of the invention.

1 is a perspective view of an intraocular lens support according to a first embodiment of the present invention.

2 is a cross-sectional view taken along the line II 'of FIG.

3 is a view showing a cross section of the intraocular lens support according to the first embodiment of the present invention in coordinates;

4 is a diagram showing an intraocular lens support according to a second embodiment of the present invention on coordinates;

5 is a cross-sectional view of the intraocular lens support according to the third embodiment of the present invention.

6 is a cross-sectional view of the intraocular lens support according to the fourth embodiment of the present invention.

7 is a cross-sectional view of the intraocular lens support according to the fifth embodiment of the present invention.

8 is a sectional view of a human lens.

Figure 9 is an ultrasound photograph measuring the shape of the intraocular lens support according to the present invention.

10 to 13 are explanatory views for determining an ellipse included in the shape of the first surface of the intraocular lens support according to the present invention according to the measured lens shape.

<Description of the symbols for the main parts of the drawings>

100: intraocular lens support 110: the first surface

111: front side 113: rear side

120: second side 121: front side

123: rear surface 125: concave surface

Claims (18)

A structure comprising a first surface that is an outer surface and a second surface that is opposite to the first surface, The first surface includes a first front surface and a first rear surface, the first front surface includes an elliptical shape in at least a portion of the cross-sectional shape, A first ellipse along the elliptical shape included in the first front surface is represented by the following Equation 1 (Equation 1)

(0 <a ≦ 5 ± 2, 0 <b ≦ 1.6 ± 1, and a> b) Follows the elliptic equation of, The second ellipse along the elliptical shape included in the first rear surface is represented by the following Equation 2 (Equation 2)

(0 <c≤5.2 ± 2, 0 <d≤3.2 ± 1, a≤c, b≤d) Follows the elliptic equation of, The first oval is an intraocular lens support inscribed to the second ellipse. delete delete delete delete The method of claim 1, The second surface may include a second front surface and a second rear surface, and the second front surface includes an oval shape in at least a portion of the cross-sectional shape of the intraocular lens support. The method of claim 6, A third ellipse along the elliptical shape included in the second front surface is expressed by Equation 3 (Equation 3)

(0 <e≤3.6 ± 1, 0 <f≤2.6 ± 1, a> e> f) An intraocular lens support following the elliptic equation of. The method of claim 7, wherein And said second rear surface comprises an elliptic (including circle) shape in at least a portion of its cross-sectional shape. The method of claim 8, A fourth ellipse (including a circle) along an elliptical shape included in the second rear surface is represented by Equation 4 below (Equation 4)

(0 <g≤3.6 ± 1, 0 <h≤3.6 ± 1, f≤h, a> g) Intraocular lens support according to the elliptic (including circle) equation. The method of claim 1, The intraocular lens support of the intraocular lens support is 0.8 to 3mm in thickness between the first surface and the second surface. The method of claim 1, The intraocular lens support further provided with a concave surface on which the intraocular lens is fitted. The method of claim 11, An intraocular lens supporter having a thickness between the first surface and the second surface (concave surface) at an equator of the intraocular lens support. The method of claim 1, The point where the first surface and the second surface meet is an intraocular lens support. A structure including a first surface that is an outer surface and a second surface that is opposite to the first surface, wherein the first surface includes a first front surface and a first rear surface, and the first front surface has a cross-sectional shape. In the method for producing an intraocular lens support comprising at least a portion of an elliptical shape, A first step of measuring a human lens shape; And Reflecting the value measured in the first step, The elliptical shape included in the first front surface is represented by Equation 1 below as a first ellipse. (Equation 1)

(0 <a ≦ 5 ± 2, 0 <b ≦ 1.6 ± 1, and a> b) Satisfies the elliptic equation of, The elliptical shape included in the first rear surface is represented by Equation 2 as a second ellipse (Equation 2)

(0 <c≤5.2 ± 2, 0 <d≤3.2 ± 1, a≤c, b≤d) Satisfies the elliptic equation of, The first ellipse comprises a second step of determining a, b, c, d to inscribe the second ellipse. The method of claim 14, The first step is a method of manufacturing an intraocular lens support made of an ultrasound. The method of claim 15, The value measured in the first step includes a lens angle, size, thickness, curvature of the front and rear surfaces. delete The method of claim 14, And a third step of determining a cross-sectional shape of the second surface after the second step.

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