RU8890U1 - DEVICE FOR CARRYING OUT A SEMI-REPAIR CORNERAL CUT IN EYE OPERATIONS - Google Patents

Abstract

A device for making a half-trepanation corneal incision of the eyeball, characterized in that it is a holder rod, the working part of which is made in the form of a hollow cylinder with a sharp cutting edge, truncated by 1/3 of a circle.

Description

Device for the implementation of a half-trepanation corneal incision during eye operations

The utility model relates to medical equipment, namely, a surgical instrument for ophthalmological operations during reconstructive interventions of the anterior eye.

Surgical instruments are known for performing corneal or corneoscleral incisions during reconstructive operations of the anterior part of the eye — a blade or knives and corneal knives1 (Gztadorova R.A., Bordyugova G.G., Travkin A.G. Reconstructive operations on the eyeball. M. 1983, S. 5-19). At the same time, in the area of the proposed corneal or corneoscleral incision, a through section of the cornea is made with a blade or knife, about 3-4 mm in size, and then corneal scissors inserted by one jaw into the anterior chamber through the formed section of the cornea, a corneal incision is made over the entire thickness of the required length, most often no more than the circumference of the cornea.

Disadvantages: invasiveness of the incision (the need to use an additional incision to eliminate pathological changes in the iris, anterior chamber in its lower parts); poor quality of corneal incisions when using cutting tools such as scissors, knives, blades.

The utility model is aimed at solving the problem: atraumatic incision, the convenience of performing reconstructive interventions on the structures of the anterior part of the eye through only one upper semi-trepanation incision, which reduces the time of the operation.

These tasks are achieved using a device, characterized in that it is a rod-holder, the working part of which is made in the form of a hollow cylinder with a sharp cutting edge, truncated on a circle.

A device for creating a half-opening hole is shown in the drawing, where in FIG. 1 is a general plan view, and in FIG. 2 is a side view. The device is a manual mechanical cutting surgical instrument containing an all-metal rod-holder 1, which does not extend into the cutting working part 2. In the upper part of the shaft there is a thickening with a ribbed surface 3 for better fixation of the instrument in the hand when performing light rotational movements with the working part during the corneal incision . The working end of the rod 2 has the shape of a hollow cylinder with an inner diameter of 8 or 9 mm, truncated around a circle, with a sharp cutting edge 4 up to 1 mm high, which limits the depth of cut, which prevents trauma to the underlying tissues of the eyeball.

The device is used as follows: the device, taking the holder-rod 1 in the region of the rib part 3, is placed on the cornea with the working end 2 with a sharp edge 4 either strictly vertically or slightly inclined towards the upper limb and, slightly pressing the cornea, with light rotational movements cut by the working end 2 with a sharp edge 4 to its entire thickness; this ensures uniformity of the corneal incision throughout its semicircle.

Positive effect:

atraumatic part of the method - a semi-trepanation incision of the cornea allows you to perform complex types of reconstruction, especially in the lower parts of the anterior eye (elimination of the iris, iridodialysis, anterior synechia, root-vitreous adhesions, lens extraction, anterior vitrectomy and others) without a second additional lower corneal incision;

ease of use and ease of execution - the incision is made to the entire thickness of the cornea, while an additional incision is not required with scissors;

high quality of the corneal incision - even edges of the incision, perpendicular to the surface of the cornea, in comparison with scissors or a razor blade, exclude irregularities and bevels of the corneal incision, which guarantees good adaptation of the edges of the wound and the formation of a more tender scar. This is necessary to reduce corneal astigmatism and restore the optical properties of the cornea;

speed and accuracy of corneal incision with a minimum number of rotational movements with less trauma to the corneal tissue, especially its posterior epithelium;

- safety of the method - the absence of strong mechanical pressure on the corneal tissue, a controlled cut depth, visual inspection, which eliminates damage to underlying tissues.

Claims (1)

A device for making a half-trepanation corneal section of the eyeball, characterized in that it is a rod-holder, the working part of which is made in the form of a hollow cylinder with a sharp cutting edge, truncated by 1/3 of the circumference.