RU2454211C1 - Microsurgical forceps for incomitant strabismus - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to ophthalmology. Forceps comprise branches of different lengths. The branches have curved ribs. The branch ends have a smooth surface and hooked planes at the angle of 90° to each other. The length of one branch is 0.5 mm smaller than the length of the other branch. The hooks have a working part of 5 mm with one anteceding the other one when brought closed.

EFFECT: prevented injuring action on muscles of two or more instruments, preserved anatomic structure of an eyeball and reduced length of the operations.

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Description

The invention relates to medical equipment, namely to ophthalmology, and is intended to increase the effectiveness of the technology of surgical treatment of paralytic strabismus.

It is known that surgical treatment of paralytic strabismus is carried out using direct oculomotor muscles. One of the stages of the operation involves the extraction and formation of a muscle bundle using an ophthalmic hook and tweezers to fix it with a ligature (RF patent No. 2112479, 06/10/1998; RF patent No. 2363427, 08/10/2009, Bull. 22. Manual for eye surgery. Edited by M .L. Krasnov, BC Belyaeva, Moscow: Medicine, 1988, p. 454-457).

The disadvantage of using these tools is the increased invasiveness of the operation due to the repeated deformation of the secreted muscle bundle under the sequential action of several instruments, and especially when applying a fixing ligature and moving the muscles with it.

For this reason, there was a need to create a tool with which you can carry out the selection, formation, fixation and movement of the selected muscle bundle.

The closest in a number of essential features to the proposed tool is pointed tweezers for ophthalmic surgery (RF patent No. 51452, 02/27/2006).

This is tweezers, the ends of the branches of which are conical in shape and bent towards each other at an angle of 90 ° with respect to the branches of the branches.

Tweezers are used for marking in plastic surgery on the eyelids. Each branch looks like a hook, but because of the sharp ends and bends, the branch tweezers cannot be used to isolate and form muscle bundles in the surgical treatment of strabismus, since there is a high risk of muscle injury.

The problem to be solved and the expected technical result are to increase the effectiveness of surgical treatment of paralytic strabismus by reducing the morbidity and reducing the duration of operations by creating a tool that structurally and functionally combines the properties of an ophthalmic hook and tweezers, which also eliminates the imposition of a fixing ligature.

The problem is solved so that the proposed tool is a tweezers, characterized in that its branches are curved along the edge (Figure 1), the length of one branch is less than the other by 0.5 mm; and along the plane, the ends of the branches are bent at an angle of 90 ° to each other and form hooks with a working part of 5 mm, located one in front of the other when the branch is closed, the surface of the hooks is smooth (Figure 2).

The use of tweezers is as follows.

Option 1

1. After dividing the upper or lower rectus muscle, the lateral bundle is taken onto the hook of the forceps jaw, which moves along the muscle to the required distance.

2. The branches close tightly and the lateral bundle of muscle moves towards the paralyzed muscle to a specific point of attachment.

Option 2

1. As in option 1, only the tweezers move as close to the paralyzed muscle as possible.

2. After separation of the paralyzed muscle, its upper or lower bundle is taken on the hook of the other tweezers jaws, the jaws are reduced so that the captured muscle bundles can move freely inside the instrument.

3. The tweezers move a distance corresponding to the angle of strabismus, after which the branches close tightly and both bundles are sutured.

Thus, the proposed tweezers allows you to save the anatomical structure of the eyeball, reduce the morbidity, and reduce the duration of the operation in case of paralytic strabismus by eliminating the traumatic effects of several tools from the process for forming, holding muscle bundles and fixing them with a ligature for movement.

Confirmation of this is the use of the proposed tool in 12 operations for the treatment of paralytic strabismus, as a result of which the expected effect was obtained.

Claims (1)

Microsurgery tweezers for paralytic strabismus, including jaws of different lengths and curved along the edge, and their ends having a smooth surface, bent 90 ° towards each other, form hooks, characterized in that the length of one branch is shorter than the length of the other branch 0.5 mm, and the hooks have a working part of 5 mm and are placed one in front of the other at the time of closure.

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