RU46179U1 - CRYSTAL EYE CRUSHING DEVICE - Google Patents

Abstract

The utility model relates to medicine, namely to ophthalmology. The device consists of a handle and a working part in the form of a knife-hook. The blade of the working part of the device is made at an angle of 45 degrees in the frontal plane relative to the axis of the working part of the device. The device provides an effective split of the lens nucleus when performing cataract phacoemulsification. 1 approx.

Description

The utility model relates to the field of medicine, namely to ophthalmology.

There are various devices for crushing the lens of the eye when performing phacoemulsification, consisting of a handle and a working part.

Known hook knife for crushing the lens during operations "Fako", consisting of a handle and a working part in the form of a knife hook, blade length 0.8 mm, total length 130 mm, made of titanium (See Catalog Augeninstrumente Ophthalmic instruments, Storz, Jnc, -USA, 1996, p. 47, M677T, M678T).

However, the known devices do not provide an effective split of the lens nucleus due to the perpendicular position of the blade of the working part of the device with respect to the ultrasonic tip of the phacoemulsifier.

The technical result of the proposed device is to provide an effective split of the lens nucleus or fragmentation of parts of the lens nucleus when performing phacoemulsification of cataracts.

New in achieving the set technical result is that the blade of the working part is made at an angle of 45

degrees in the frontal plane relative to the axis of the working part of the device.

The proposed implementation of the working part of the device provides oncoming single-line movement of the blade of the device and the ultrasonic tip of the phacoemulsifier, which contributes to an effective split of the lens core with high density.

Comparative analysis with the prototype shows that the proposed device differs from the known one in that the blade of the working part is made at an angle of 45 degrees in the frontal plane relative to the axis of the working part, which meets the criterion of "novelty."

The proposed device is used during phacoemulsification of cataracts and provides an effective split of the lens nucleus even with high density or fragmentation of parts of the lens nucleus, which meets the criterion of "industrial applicability".

The device for crushing the lens consists of a handle and a working part. The working part is made in the form of a knife-hook. The blade of the working part is made at an angle of 45 degrees in the frontal plane relative to the axis of the working part of the device.

The device operates as follows. Under retrobulbar anesthesia in the meridian for 10 hours, a corneal two-stage trapezoidal self-sealing section 2.5 mm long is performed paralymbally. the width of the outer section of the cut 3.2 mm. At Meridian 1 hour. 30

min and 9 hours paralymbally perform an auxiliary incision 1 mm wide. Through the formed tunnel incision, the anterior chamber of the eye is filled with a viscoprotector, instrumental circular capsulorhexis, hydrodissection, and hydrodelineation of the lens nucleus are performed. An ultrasonic tip of the phacoemulsifier is introduced through the tunnel incision into the anterior chamber, and 1 hour and 30 minutes through the auxiliary incision in the meridian. introduce the proposed device. After aspiration of the surface cortical masses, the ultrasonic tip is immersed in the thickness of the nucleus at an angle of 45 degrees to the plane of the crystalline lens and fixed. The blade of the knife-hook is immersed to the entire depth of the peripheral part of the lens along the axis line of the ultrasonic tip. Perform a single-line oncoming movement of the ultrasonic tip and device. At the moment of closest approach of the device and the tip, the lens core is broken into two halves by moving the device to the left and the tip to the right. Using the device as a manipulator, the lens core is rotated 90 degrees. The ultrasonic tip is immersed centrally in the core, closer to the bottom edge of the gap. obtained as a result of the previous maneuver. The blade of the hook knife is immersed in the peripheral part of the lens nucleus and a split is performed according to the technique described above. The described maneuver is performed with each fragment of the nucleus. Using effective mechanical fragmentation of the lens material using the device, produce

sequential crushing of the lens nucleus into small fragments, followed by ultrasonic emulsification. After washing off the remaining cortical masses, an IOL is implanted in the capsular bag. Clinical example.

Patient K. Card No. 160035, was admitted to the IF GU MNTK “Eye Microsurgery” with a diagnosis of Complete complicated cataract of the right eye. Incomplete complicated cataract of the left eye. Pseudoexfoliation syndrome of both eyes. On admission: OD pr.crlae

OS 0.4

OD - the eye is calm. The cornea is transparent. Front camera of medium depth. Pupil 6 mm (drug mydriasis). On the pupil edge and on the anterior capsule, the lens is pseudoexfoliate. The lens is diffusely cloudy (core density 4 degrees) There is no ocular reflex. OS - the eye is calm. The cornea is transparent. Front camera of medium depth. Pupil 6 mm (drug mydriasis). On the pupil edge and on the anterior capsule of the lens of the pseudoexfoliation. Cortical and nuclear (with a nuclear density of 2 degrees) opacification of the lens. Fundus: optic nerve disc - pale pink, clear borders. Macular reflexes are smoothed. Operation OD using the proposed device according to the described method.

At discharge: vis OD 0.6 sph (-1.0) = 0.7. OD - the eye is calm. The cornea is transparent. Front camera of medium depth. Pupil 3 mm. IOL in capsule bag, correct position. Eye

bottom: DZN - pale pink, clear borders. Macular reflexes are smoothed.

Diagnosis: Artifakia of the right eye, incomplete complicated cataract of the left eye. Pseudoexfoliation syndrome of both eyes.

Claims (1)

A device for crushing the lens, consisting of a handle and a working part in the form of a knife-hook, characterized in that the blade of the working part is made at an angle of 45 ° in the frontal plane relative to the axis of the working part of the device.