RU2283065C1 - Artificial eye lens possessing dosed intraocular changes of focal power - Google Patents

Abstract

FIELD: medical engineering.

SUBSTANCE: device is composed of optical and haptic parts, the latter being produced as unclosed circular arc having member for fastening the optical part. Three arc-shaped pockets turned with their open parts toward the inside of the circular arc are available. They are formed by mutually perpendicular straight lines and arc-shaped supporting members produced on external surface of the circular arc and directed in opposite sides.

EFFECT: reduced risk of traumatic complications.

3 dwg

Description

The invention relates to medicine, more specifically to ophthalmology, and can be used to correct ametropia by intraocular changes in the optical power of the artificial lens of the eye (IHG).

The closest analogue is the well-known IHG with an intraocular change in optical power, made up of components from the optical and haptic parts (US 6849091 B1, 02/01/2005, Figs. 13-19-19).

However, when changing the optical part of this IHG, trauma to the surrounding tissue is possible.

The technical result according to the invention is to reduce trauma during intraocular correction through the use of composite IHG and simplify the change of the optical part.

The technical result according to the invention is achieved by the fact that in an ICH with an intraocular change in optical power, made up of the optical and haptic parts, the haptic part is made in the form of an open circular arc equipped with an optical part attachment unit, including three arcuate pockets facing open parts into the inside of the circular arcs and formed by mutually perpendicular straight lines, and arched support elements made on the outer surface of a circular arc and directed into mutually opposite directions.

The invention is illustrated in figures 1-3.

Figure 1 is a top view of the IHG.

Figure 2 - section IHG on aa.

Figure 3 is a top view of the haptic part and IHG.

Figure 1 shows the IHG with an intraocular change in optical power, made up of a composite of the optical part 1 and the haptic part 2, which is made in the form of an open circular arc 3, equipped with a mounting unit for the optical part 1, including three arcuate pockets 4, 5, and 6, facing open parts into the interior of the circular arc 3 and formed by mutually perpendicular straight lines 7, 8, and 9 and arched support elements 10, 11, made on the outer surface of the circular arc 3.

Figure 2 shows a section of the IHG along AA, which shows the arcuate pockets 4 and 6 with open parts facing the inside of a circular arc 3 (figure 1).

Figure 3 shows the haptic part 2 IHG in the form of an open circular arc 3 with three arcuate pockets 4, 5, and 6 and arcuate supporting elements 10, 11, made on the outer surface of the circular arc 3.

An intraocular change in optical power is carried out by changing the installed optical part 1 (Fig. 1) to a new one with the necessary optical power.

For intraocular correction of myopia, the optical part 1 is removed (Fig. 1) and replaced with a lens with a lower optical power.

For intraocular correction of hyperopia, replace the optical part 1 (Fig. 1) with a lens with greater optical power.

For intraocular correction of anisometropia, either reduce the refraction of the eye by replacing the optical part 1 with a lens of lower optical power, or increase the refraction of the eye by replacing the lens with a higher optical power.

For intraocular correction of induced anisometropia, either reduce / increase eye refraction through the actions described above, or perform these actions in accordance with changes in refraction in the paired eye, or, with bilateral implantation, perform coordinated actions for intraocular correction in both eyes.

Implantation of IHG is as follows. After phacoemulsification, the anterior chamber and capsule bag are filled with viscoelastic. Through a tunnel incision, for example, the haptic part 2 of the IHG in the injector is introduced into the capsule bag. Then also using the injector enter the optical part 1 of the IHG. Assembly of IHG is performed intraocularly. The front chamber is washed with a BSS solution, a solution of acetylcholine 0.01% is introduced. Seal the surgical incision.

The optical power of the replaced optical part is calculated according to the mathematical dependence on the basis of the magnitude of the required dosed intraocular correction.

Work with IHG in the postoperative period.

Through the performed corneal paracentesis, 1% Mesaton solution is injected into the anterior chamber to achieve maximum mydriasis. The anterior chamber is filled with viscoelastic. Using a special tool (not shown), one end of the circular arc 3 of the haptic part 2, in which the optical part 1 is mounted, is diverted from the center. The optical part 1 is removed from the pockets 4, 5, and 6 and removed from the anterior chamber through an operative incision. Through the same surgical incision, the optical part 1 of the required optical power is likewise introduced and placed in the pockets 4, 5, and 6 of the haptic part 2. The front chamber is washed with a BSS solution, 0.01% acetylcholine solution is introduced. Seal the surgical incision.

The need for a metered intraocular change in the optical power of ICH arises in situations where it is difficult to predict the final parameters of the eye, a high probability of induced ametropia, or a planned change in clinical refraction in the postoperative period is necessary. This need arises with a dynamic change in the optical parameters of the eye (for example, intraocular correction in childhood, since the natural growth of the eye lasts on average 10 years or more), with intraocular correction against the background of a forced change in the refractive power of optical media, for example, due to the introduction for an indefinite period of time into the vitreous cavity of vitreous fluids.

ICH with a dosed intraocular change in optical power should be implanted through the incision used for phacoemulsification, fixed in a capsule bag, take a stable position, a change in optical power should be accompanied by minimal trauma, a change in optical power should be predictable and dosed, a change in optical power should not be accompanied by risk the development of complications encountered with intraocular correction (pupil block, IOL displacement, etc.).

Claims (1)

An artificial lens of the eye with an intraocular change in optical power, made up of a combination of the optical and haptic parts, characterized in that the haptic part is made in the form of an open circular arc, equipped with an optical part attachment unit, including three arcuate pockets facing open parts inside the circular arc and formed mutually perpendicular straight lines and arched support elements made on the outer surface of a circular arc and directed in mutually opposite reaping sides.

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