RU121156U1 - TOOL FOR Ophthalmic Surgery - Google Patents

Abstract

An instrument for carrying out ophthalmosurgical operations, containing a handle and a working part, characterized in that it contains the first and second working parts located at opposite ends of the handle; the first working part is bent from the longitudinal axis of symmetry of the handle at an angle of 135 °, and the second working part is bent from the longitudinal axis of symmetry of the handle at an angle of minus 45 °; the end end of the first working part contains a cantilever section 9-11 mm long, ending perpendicularly with a 1.6 mm long plate directed to the side opposite to the longitudinal axis of symmetry, the outer edge of which is sharpened at an angle of 45 °, with a disk attached to its end, the radius 0.15 mm; and the second working part is made in the form of a semicircular spatula 12 mm long and 5 mm wide.

Description

The utility model relates to the field of ophthalmic surgery and can be used for ophthalmic surgery.

A well-known microsurgical instrument for fragmentation of the cataract nuclei of the lens in the vertical plane (utility model patent No. 2007114175/14 of 04.17.2007). The tool contains a handle and a working part, which are connected at an angle of 105 °. The working part is made in the form of a metal plate with a width of 0.2-0.3 mm, a thickness of 0.15 mm and a length of 1.75; 2.0 and 2.25 mm. The left edge of the insert and the tip of the cutting part are pointed and beveled at an angle of 20 °.

However, this device has a significant drawback: it is possible to rupture the back capsule, when using it. In addition, this design cannot be used to remove soft cataracts.

A known tool, a spatula for exfoliating the Descemet sheath during the operation of a modified sclerectomy of the penetrating and non-penetrating type (utility model patent No. 2009113139/14 of 04/09/2009). The putty knife consists of a handle and a working part 0.4 mm wide. The working part consists of two straight sections - the first, bent at an angle of 120 ° -130 ° degrees to the handle, and the second - the bent end of the working part to the first section at an angle of 30 ° and a length of 4 mm. The end of the spatula is rounded.

This device has a significant drawback: it is not convenient enough for repositioning an intraocular lens due to its geometric dimensions. The technical task is to prevent rupture of the posterior capsule, the ability to use the tool to remove cataracts of various densities, increase the convenience of the ophthalmic surgeon during reposition of the intraocular lens, and reduce the time for the operation.

The specified technical problem is solved in that the instrument for conducting ophthalmic surgery contains a handle, a first and a second working part; the first and second working parts are located at opposite ends of the handle; the first working part is bent from the longitudinal axis of symmetry of the handle at an angle of 135 °, and the second working part is bent from the longitudinal axis of symmetry of the handle at an angle of minus 45 °; the end end of the first working part contains a cantilever section 9–11 mm long, ending with a 1.6 mm long perpendicularly mounted plate directed opposite to the longitudinal axis of symmetry, the outer edge of which is sharpened at an angle of 45 °, with a disk fixed at its end with a radius of 0.15 mm; and the second working part is made in the form of a semicircular spatula 12 mm long and 5 mm wide.

The proposed device is illustrated by drawings, figures 1, 2, 3, 4. Figure 1 - General view,

figure 2 - working part 2, figure 3 - working part 3.

The device is as follows: the tool contains a handle 1, a first working part 2 and a second working part 3. Working parts 2; 3 are located at opposite ends of the handle 1. The first working part 2 is bent from the longitudinal axis of symmetry of the handle at an angle 5 equal to 135 °, and the second working part 3 is bent from the longitudinal axis of symmetry of the handle at an angle of 6 minus 45 °. The end end of the first working part 2 contains a cantilever section 7, 9-11 mm long, ending with a perpendicularly mounted plate 8, 1.6 mm long, directed to the side opposite to the longitudinal axis of symmetry, the outer edge 9 of which is sharpened at an angle of 45 °, with the end fixed on it disc 10, radius 0.15 mm; and the second working part 3 is made in the form of a semicircular spatula 11 12 mm long, 5 mm wide.

Work with the device is as follows: the proposed tool is used when conducting coaxial phacoemulsification with implantation of an intraocular lens. After hydrodisection, the instrument is introduced through paracentesis by the first working part 2, and a phaco-needle is introduced in parallel through the main access. They hammer a needle into the core of the lens, thereby fixing it, while pulling it toward itself and slightly down. The first working part 2 is inserted under the front capsule behind the lens equator. Next, the tool is advanced towards the needle, thereby breaking the core. Then the core is deployed, again broken using the first working part 2, and aspirated. And so on until the core is completely aspirated. During aspiration, the instrument must be kept below the needle to prevent tearing of the posterior capsule. Then, after removing the instruments from the eye, the tip of irrigation-aspiration is introduced through the main access. Through paracentesis, the second working part 3 of the instrument is introduced, which is located below the tip of irrigation-aspiration, in order to prevent rupture of the posterior capsule. After aspiration of the cortical masses is completed, viscoelastic is introduced and an intraocular lens is implanted. Then, using the second working part of the proposed tool, the intraocular lens is repositioned into the capsular bag. Irrigation-aspiration is washed out viscoelastnk. The operation ends with hydration of the sections.

Using the proposed tool allows to reduce the time of the operation, can be used to remove cataracts of various densities, increases the convenience of the ophthalmic surgeon during reposition of the intraocular lens, and prevents the rupture of the posterior capsule.

Claims (1)

An ophthalmic surgery instrument comprising a handle and a working part, characterized in that it comprises first and second working parts located at opposite ends of the handle; the first working part is bent from the longitudinal axis of symmetry of the handle at an angle of 135 °, and the second working part is bent from the longitudinal axis of symmetry of the handle at an angle of minus 45 °; the end end of the first working part contains a cantilever section 9–11 mm long ending in a perpendicularly mounted 1.6 mm long plate directed to the side opposite to the longitudinal axis of symmetry, the outer edge of which is sharpened at an angle of 45 °, with a radius fixed to its end, with a radius 0.15 mm; and the second working part is made in the form of a semicircular spatula 12 mm long and 5 mm wide.