RU190856U1 - Scleral fixative monoblock posterior chamber intraocular lens model Alcon AcrySof - Google Patents

Abstract

The utility model relates to medicine and ophthalmology, in particular, to microsurgical instruments, and can be used for transscleral fixation of mono-blocked posterior chamber intraocular lenses (IOL) of the Alcon AcrySof model in cases where there is no capsular support. , the absence of need for suture fixation, and, therefore, the elimination of the risks of dislocation of the IOL in the long-term postoperative period. The technical result is achieved It is believed that the latch of the monoblock rear chamber IOL of the Alcon AcrySof model is made in the form of a T-shaped plate 1.25 mm long, 0.3 mm wide, 0.25 mm thick, the shoulder length of the T-shaped end of the plate is 1.75 mm, the end face is the opposite The T-shaped end is connected with the ring to accommodate the haptic element of the IOL, the ring is located in the frontal plane relative to the plane of the T-shaped plate, the outer diameter of the ring is 0.9 mm, the inner is 0.7 mm, the width of the ring is 0.3 mm

Description

The utility model relates to medicine and ophthalmology, namely to microsurgical instruments, and can be used for transscleral fixation of monoblock posterior chamber intraocular lenses (IOL) of the Alcon AcrySof model in cases where there is no capsular support.

The closest analogues either in domestic or in foreign literature could not be found.

The task of the utility model is to create a lock for an additional intraocular lens attachment system and to ensure its long-term stable position.

The technical result of the utility model is reliable long-term fixation of the posterior chamber IOL, no need for suture fixation, and, therefore, elimination of the risks of dislocation of the IOL in the late postoperative period.

The technical result is achieved by the fact that the scleral fixative of a single-block back-chamber IOL model Alcon AcrySof is made in the form of a T-shaped plate with a length of 1.25 mm, a width of 0.3 mm, a thickness of 0.25 mm, and a shoulder length of the T-shaped end of the plate is 1.75 mm, the end opposite to the T-shaped end is connected with the ring to accommodate the IOL haptic element in it, the ring is located in the frontal plane relative to the plane of the T-shaped plate, the outer diameter of the ring is 0.9 mm, the inner diameter is 0.7 mm, width rings is 0.3 mm. Acrylic can be used as a material.

The utility model is illustrated in FIG. 1-4. FIG. 1 shows a general view of the proposed clamp; FIG. 2 is a side view, in FIG. 3 is a top view, in FIG. 4 - photo lock.

The latch is made as a whole in the form of a T-shaped plate 1 with a length of 1.25 mm, a width of 0.3 mm, a thickness of 0.25 mm. The length of the shoulder of the T-shaped end 2 of the plate is 1.75 mm. Ring 3 has an outer diameter of 0.9 mm, an internal diameter of 0.7 mm and a width of 0.3 mm and is located in the frontal plane relative to the plane of the T-shaped plate. The haptic part of the IOL is inserted into the ring 3, the T-shaped end 2 is immersed in the scleral pockets (not shown).

The inner diameter of the ring is smaller than the expanded end of the flexible haptic element of the IOL, which allows you to put it on with a small force and ensure a stable position.

The shoulder of the T-shaped end of the plate has dimensions comparable to the scleral pockets, and immersed in them contributes to the stable position of the ring in the desired plane without suture fixation, preventing rotation of the IOL.

The utility model is used as follows. Indications for use - no capsule support. Two clamps are required for operation, one for each haptic element. For 3 and 9 hours, the conjunctiva is separated from the limbus, radial cuts of the sclera are made on both sides into 2/3 of a thickness of 2 mm, the sclera is layered to form two pockets 1 mm long on both sides of each incision, each cut is 2 mm from limb in the projection of the ciliary sulcus is formed puncture of the sclera. Each of the clamps ring 3 is attached to the alternately displayed in the main corneal incision haptic element IOL (not shown). Collet tweezers, each T-shaped end 2 is alternately output to the outside through the scleral puncture and is immersed in the appropriate scleral pocket (not shown), the sclera and conjunctiva are sutured in layers with interrupted sutures.

The utility model is illustrated by clinical examples:

Example 1. Patient S., 70 years old

Diagnosis: Immature katarct OS, lens subluxation of 1 degree

Visual acuity of the left eye of 0.2 is not corrected.

Ophthalmoscopically expressed iridofacodona, diffuse opacities in the cortex and lens nucleus.

During phacoemulsification, a complication occurred in the form of a rupture of the posterior lens capsule. The remains of the lens and lens capsule removed, produced anterior vitrectomy. IOL model Alcon AcrySoflQ implanted in the anterior chamber. The conjunctiva was septated for 3 and 9 hours, two radial scleral incisions were made on 2/3 of a thickness of 2 mm on both sides, the sclera was delaminated to form pockets 1 mm long on both sides of the incisions, in 2 mm incisions from the limbus in the projection of the ciliary the furrows are formed by scleral punctures. The fixatives are fastened to the alternate Ipal haptic elements that are alternately inserted into the main corneal incision. Collet tweezers T-shaped ends alternately brought out through the scleral punctures and immersed in the scleral pockets, the sclera and conjunctiva are sutured in layers with interrupted sutures.

On the first day after the operation, the posterior chamber IOL is centered during ophthalmoscopy of the anterior segment. Visual acuity of 0.6 with correction. IOP of 18 mm. Hg One month after surgery, the visual acuity was 0.8 with correction, IOP 19 mm Hg, posterior chamber IOL centered.

Example 2. Patient V., 65 years old.

Diagnosis: Postoperative Aphakia OD

Visual acuity of the left eye sph + 11,0D = 0,6

IOL model Alcon AcrySoflQ implanted in the anterior chamber. The conjunctiva was septated for 3 and 9 hours, two radial scleral incisions were made on 2/3 of a thickness of 2 mm on both sides, the sclera was delaminated to form pockets 1 mm long on both sides of the incisions, in 2 mm incisions from the limbus in the projection of the ciliary the furrows are formed by scleral punctures. Each fixator is attached to alternate Haptic elements of the IOL, which are alternately inserted into the main corneal incision. Collet tweezers T-shaped ends alternately brought out through the scleral punctures and immersed in the scleral pockets, the sclera and conjunctiva are sutured in layers with interrupted sutures.

On the first day after the operation, the posterior chamber IOL is centered during ophthalmoscopy of the anterior segment. Visual acuity 0.5 not corrected, IOP 19 mm Hg One month after surgery, the visual acuity was 0.6 not corrected, IOP of 20 mm Hg, posterior chamber IOL centered.

The use of the proposed utility model allows you to quickly and efficiently achieve a long-term stable position of the posterior chamber IOL.

Using the fixative, 10 operations were performed; in all cases, the posterior chamber IOL was stable.

Claims (1)

Scleral fixative of monoblock posterior chamber intraocular lens (IOL) model Alcon AcrySof, characterized in that it is made in the form of a T-shaped plate with a length of 1.25 mm, a width of 0.3 mm, a thickness of 0.25 mm, the length of the shoulder of the T-shaped end of the plate is 1.75 mm, the end opposite to the T-shaped end is connected to the ring to accommodate the IOL haptic element, the ring is located in the frontal plane relative to the plane of the T-shaped plate, the outer diameter of the ring is 0.9 mm, the inner diameter is 0, 7 mm, ring width is 0.3 mm.

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