RU188159U1 - OPHTHALMIC MICRO-SURGICAL collet tweezers - Google Patents

Abstract

The utility model relates to medicine, namely to ophthalmic surgery, and can be used to remove fibrous deposits from cortical masses from the surface of the posterior lens capsule during surgical treatment of cataracts.

Ophthalmic microsurgical collet tweezers consists of a body, a working part with a tube and a jaw. Each branch is located at an angle of 120 ° to the surface of the working part and has the shape of an equilateral triangle with a rounded tip, and diamond spraying is applied to the outer surface of the branches.

Using the utility model allows to reduce the risks of intra- and postoperative complications due to the absence of the need to perform posterior capsulorhexis and to reduce manipulations in the anterior chamber by cleaning the surface of the posterior capsule, separating the flap of fibrous deposits and removing it from the anterior chamber with one tool, and also increasing convenience surgeon's work.

Description

The utility model relates to medicine, namely to ophthalmic surgery, and can be used to remove fibrous deposits from cortical masses from the surface of the posterior lens capsule during surgical treatment of cataracts.

Removal of cortical masses is one of the important stages of cataract extraction, during which the surgeon must be especially careful not to damage the posterior lens capsule. It is necessary to completely remove all cortical masses to reduce the severity of postoperative inflammation, reduce the likelihood of clouding of the posterior capsule, better alignment of the intraocular lens, accelerate and improve the restoration of visual functions after surgery.

To completely remove the cortical masses, the so-called “polishing” of the posterior capsule and the equatorial zone of the lens is performed using, for example, a tool for polishing the anterior and posterior lens capsules (Ophtalmology Times. - 2011. - Vol.35. No 16. - P. 5), or cannula for polishing the capsule bag (Eye World - 2011.- Vol. 16.- No. 3 - P. 44) after removal of residual lens masses.

However, in some cases, the formation of cortical-capsular adhesion is observed, manifested in the form of fibrous deposits from cortical masses that are very closely connected with the posterior capsule (for example, with developed, milk cataracts), and the removal of cortical masses becomes a technically difficult procedure. The back capsule remains transparent in most cases. If it is impossible to completely remove the fibrous deposits from the cortical masses from the surface of the posterior capsule in such cases, it is necessary to perform posterior capsulorhexis, which lengthens the operation time and can provoke a number of complications, such as prolapse of the vitreous, linear rupture of the posterior capsule, dislocation of the intraocular lens (IOL), development of macular edema. To preserve the integrity of the posterior capsule, it is necessary to sequentially separate the flaps of fibrous deposits and remove them from the anterior chamber, which requires the use of a large number of instruments and lengthens the time of surgical intervention.

The objective of the utility model is to develop the design of an ophthalmic instrument for microsurgery, which allows cleaning the surface of the posterior capsule from fibrous deposits from cortical masses during surgical treatment of cataracts.

A well-known ophthalmic microsurgical forceps tweezers for performing capsulorexis according to Kerschner (http://cilita.com/instrument/14-pincet oftal mologicheskiv mikrohirurgicheskiy-55), a prototype consisting of a body, a steel tube, jaws and a working part of a triangular shape, located at an angle 120 ° to the surface of the branch. However, the design of this tweezers does not provide the ability to clean the surface of the back capsule from fibrous deposits and remove them.

The problem is solved by the development of ophthalmic collet forceps for microsurgery of the following design.

Ophthalmic microsurgical collet tweezers, consisting of a body (1), a working part with a tube (2) and a jaw (3) (Fig. 1). Each branch is located at an angle of 120 ° to the surface of the working part and has the shape of an equilateral triangle with a rounded tip, and diamond spraying is applied to the outer surface of the branches (4).

In the open position, using diamond spraying on the outer surface of the jaw tweezers, it is possible to delicately clean the surface of the posterior capsule in the optical zone from fibrous formations from the cortical masses and to separate the flap of the cortical masses for its subsequent removal. In the closed position, the tips of the tweezers capture the formed flap and bring it out of the anterior chamber.

The rounded tip of the working part of the tweezers allows you to capture the formed flap of fibrous tissue without risk of injury to the surface of the posterior capsule.

The ratio of the side length of each jaw to the length of the working part is 1:16.

The tweezers body is made of titanium, the tube and the working part are made of stainless steel.

The utility model was made for calibers 20 G and 23 G, however, other manufacturing options of the proposed tweezers are possible.

The technical result of using the utility model is as follows:

- reducing the risk of intra- and postoperative complications due to the absence of the need to perform posterior capsulorhexis and to reduce manipulations in the anterior chamber by cleaning the surface of the posterior capsule, separating the flap of fibrous deposits and removing it from the anterior chamber with one tool;

- prevention of late complications of the operation (in particular, the development of secondary cataracts);

- increase the convenience of the surgeon.

A utility model is used as follows. During surgical treatment of cataracts after cortical mass removal in the presence of cortical-capsular adhesion on the posterior capsule, viscoelastic is introduced into the anterior chamber, tweezers are inserted into the anterior chamber through paracentesis, and tweezer branches are brought to the fibrous zone. Then, with smooth movements from the edge of the fibrous mass to its center, the outer part of the forceps jaw with a spray coating is used to clean part of the fibrous masses from the surface of the posterior capsule until a fibrous flap is formed. Then the obtained flap is placed between the branches of the tweezers, the tweezers are closed and the flap is separated from the back capsule. Manipulations are repeated until complete removal of fibrous deposits from the surface of the posterior capsule. Next, the separated flaps of fibrous masses are removed from the anterior chamber with tweezers, an IOL is implanted, viscoelastic is washed out and the surgical incisions are hydrated.

Claims (1)

Ophthalmic microsurgical collet tweezers, consisting of a body, a working part with a tube and branches located at an angle of 120 ° to the surface of the working part, characterized in that each branch has the shape of an equilateral triangle with a rounded tip, and diamond spraying is applied to the outer surface of the branches.

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