RU137196U1 - MUSCLE HOOK WITH AN ARRANGED HOLE - Google Patents

Abstract

A muscular hook with a bent hole, made of stainless steel, including a handle 100 mm long and ø 5 mm long, a 35 mm long hook with a flat working part, 1.8 mm wide with a hole ø 1 mm at the end and 90 ° deviated from the tool axis, characterized in that the working part 12 mm long is curved in an arc with a radius of 5.2 mm upwards in a plane perpendicular to the axis of the tool.

Description

The utility model relates to the field of medical technology, namely to ophthalmology and is intended for manipulations on the eye muscles during operations related to strabismus.

It is known that during surgical treatment of strabismus, the eyeball is rotated to provide access to the area of amplification or weakening of the action of the eye muscles.

The rotation of the eyeball by the required amount is performed using the holders applied to the eye muscles. To do this, using a muscle hook with a hole under the muscle, a ligature is carried out with the help of which the muscle is pulled in a given direction.

To carry out the ligature, depending on the goals and conditions of the operation, hooks of various models are used: M802 - a muscular hook with a hole; M804T - muscular hook Gass with a hole; M808T - a muscular hook with an oval hole (Medin-Ural. Medical instruments. Microsurgery. Hooks, microhooks, cystotomes, IOL pushers, needles. Http://www.medin-ural.ru/?surg=l&part=27);# 08-12 - hook for operations on retinal detachment according to Gus (http://www.etpmicro.ru/etp/metal/5_kruch.html).

These tools have a straight flattened working part with a hole in the end and differ in the length of the working part, the total length, material and design of the handle.

When performing the manipulation, the hook with the part of the ligature placed in its hole is held under the muscle, after which the spent part of the ligature is removed from the hole, and the hook from under the muscle is removed.

However, when performing ligatures at the points of muscle attachment and at the intersection of the lower straight and lower oblique ocular muscles, there is a risk of injury to the eyeball.

These places are the least accessible, and the movement of the working part of the tools is limited. The translational movements of the direct working part across the ocular muscle should be combined with its angular movements in the plane of the perpendicular muscle, which can lead to eyeball injury by the end of the working part or the angle of the hook bend.

In addition, before removing the conductive ligature from the hole, it is necessary to increase the angle of inclination of the hook to the plane of the surgical field, and rotate the end of the hook with the hole out of the muscle to remove the ligature from the hole, which creates discomfort for the surgeon.

The task is to create a tool that reduces the risk of injuries of operations on the eye muscles and simplifies manipulations during ligatures.

The solution to the problem is possible by changing the nature of the tool movements. In this case, the translational movement of the working part of the hook and its angular movements can be combined by the rotational movement of the working part of the hook relative to the muscle. This is achievable by giving the working part an arcuate shape.

According to the technical characteristics, the closest to the claimed tool is a muscular hook Gass with an M804T hole (see above). It includes a handle about 5 mm in titanium 100 mm long, a stainless steel hook, 35 mm long and a working part at the end of 9 mm long, bent 90 ° from the tool axis, flattened from bending to the end, where its width is 1.8 mm and there is a hole ø 1 mm.

However, if you give the working part of the hook an arcuate shape, then the distance between its end and the bend will be reduced by 2-3 mm, which is less than the width of the oculomotor muscles, and using the tool for ligature will become almost impossible.

The problem to be solved and the expected technical result is achieved by the inventive muscle hook with a curved hole made of stainless steel, FIG. 1, including a handle 1 ø 5 mm, 100 mm long, hook 2 35 mm long with a flattened working part 3, 1.8 mm wide bent from the tool axis 90 ° and a 4 about 1 mm hole at the end, characterized in that the working a portion of 12 mm long is curved in an arc with a radius of 5.2 mm upwards in a plane perpendicular to the axis of the tool.

With this geometry, the distance between the end of the working part of the hook and the bending angle is 9 mm, which corresponds to the width of the oculomotor muscles.

To carry out the ligature, the working part of the instrument by turning the handle toward the muscle is brought under it and moved around the muscle in a plane perpendicular to it.

After the end of the working part of the hook comes out from under the muscle, a part of the ligature is brought into the hole. After that, the hook handle is rotated in the opposite direction until the ligature is removed from under the muscle. The withdrawn part of the ligature is removed from the working part of the hook, which is removed.

Thus, the claimed tool by changing the form of movement of the working part simplifies the manipulation of the ligature under the oculomotor muscles, thereby reducing the risk of injury to the eyeball, and provides more comfortable conditions for the surgeon.

Claims (1)

A muscular hook with a bent hole, made of stainless steel, including a handle 100 mm long and ø 5 mm long, a 35 mm long hook with a flat working part, 1.8 mm wide with a hole ø 1 mm at the end and 90 ° deviated from the tool axis, characterized in that the working part 12 mm long is curved in an arc with a radius of 5.2 mm upwards in a plane perpendicular to the axis of the tool.

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