RU170625U1 - INJECTOR FOR IMPLANTATION OF AN INTRAOCULAR LENS - Google Patents

Abstract

The invention relates to the field of medicine, namely to ophthalmosurgery, and is intended to deliver an intraocular lens (IOL) to the eye cavity using an injector for phacoemulsification of cataracts. free passage of the lens and its exit through the tip of the injector and the correct placement of the IOL in the capsule bag. The technical result is achieved by the development of injections torus for IOL implantation of the following design. An injector for IOL implantation having a body section with a tip and a piston. The tip of the injector has an acute cut angle and is conical in shape, with the outer diameter of the wide part being no more than 2.4 mm, the outer diameter of the narrow part being no more than 1.6 mm, and four longitudinal weakening cuts with a length of 2 are made from the outer edge of the tip of the injector -3 mm. Due to the design of the injector, it is easier to insert the tip of the injector into the corneal incision, which reduces damage to the tissues of the eye, minimizes the stress effect on the surgical wound, and also provides seamless enny output IOL from the injector tip, the proper placement of the IOL in the capsular bag and is achieved possibility of reducing the incisions through which the IOL is to be squeezed during insertion.

Description

The utility model relates to the field of medicine, namely to ophthalmic surgery, and is intended for delivery of an intraocular lens (IOL) into the cavity of the eye using an injector for cataract phacoemulsification.

Current trends in cataract surgery include minimizing surgical access, developing not only new implant materials and original IOL models, but also more advanced means of their delivery.

The injectors currently used in ophthalmosurgery for introducing an IOL into the eye cavity have a tip diameter of approximately 2.2-2.4 mm, i.e. corresponding to the size of the corneal incision.

A device for implanting an IOL is known (patent WO2001064147 dated 01.03.2000), comprising two V-shaped cutouts on the tip that facilitate the exit of the lens from the injector. However, this design of the tip makes it difficult to enter the injector into the corneal incision, does not provide a sufficient degree of fixation of the lens at the time of implantation (the lens can rotate and injure the corneal endothelium), and do not contribute to the lens occupying the correct position in the capsular bag.

The tip of the injector can be made beveled on one side (patent US 6010510 from 04.01.2000), prototype. Due to this tip design, the resistance from the side of the eye tissue when injecting the injector into the incision is reduced, however, using an injector tip with a diameter of at least 2.2 mm leads to additional injury to the surgical wound by the tip edges, which creates inconvenience for the surgeon to work and increases the risks of intraoperative complications, In particular, it prevents the rapid sealing of the surgical wound.

The technical task of the utility model is to develop an injector design for IOL implantation, which makes it possible to more easily insert the injector tip into the corneal incision, to allow the lens to pass through the injector and exit it, as well as to properly position the IOL in the capsule bag.

To solve this problem, an injector for implanting an IOL of the following design is proposed.

An injector for implanting an IOL having a body section with a tip and a piston. The tip of the injector has a sharp cut angle and is conical in shape, with the outer diameter of the wide part being no more than 2.4 mm, the outer diameter of the narrow part being no more than 1.6 mm, and four longitudinal weakening cuts with a length of 2 were made from the outer edge of the tip of the injector -3 mm.

The outer diameter of the narrow part of the tip of the injector is not more than 1.6 mm provides an easier insertion of the tip into the corneal incision. Due to the longitudinal incisions of 2-3 mm in length, the lens exits unobstructed from the tip with a narrow diameter when the injector tip is introduced into the front chamber to a depth slightly greater than the length of the tip cuts. The materials used for the manufacture of injectors (in particular polypropylene) have sufficient rigidity to prevent uncontrolled rupture along the notch lines when the lens passes through the nozzle tip and, therefore, to prevent premature exit of the lens from the tip. Four cuts on the tip provide a sufficient degree of fixation of the lens at the time of exit from the tip of the injector and the lens occupies the correct position in the capsule bag.

The technical result is as follows: - provides an easier input of the tip of the injector into the corneal incision, which minimizes the stress effect on the surgical wound,

- reducing the diameter of the tip will lead to the possibility of reducing the incisions through which the IOL should be extruded during administration; in this way, it is possible in the future to perform cataract phacoemulsification through smaller incisions;

- thanks to the longitudinal incisions, “stuck” of the lens in the injector with a narrow tip is prevented, the lens exits unimpeded from the tip, the lens occupies the correct position in the capsule bag, and premature exit of the lens from the nozzle tip is eliminated.

The utility model is illustrated by the following graphic material.

FIG. 1. Injector for implantation of the IOL, having four longitudinal incisions on the tip.

1 - injector body

2 - nozzle tip

3 - piston

4 - longitudinal laxative incisions

The implementation of the utility model (Fig. 1). After cataract removal by phacoemulsification according to the usual method, an injector (1) with an IOL inserted into it and having a cone-shaped tip with an acute cut angle (2) and longitudinal laxative cuts from the outer edge of the tip (4) is placed with the cut down into the corneal incision. Next, the tip of the injector is introduced into the front chamber to a depth slightly more than the length of the laxative incisions and with the help of the piston (3) they begin to advance the lens to the tip. At the time of extrusion of the IOL, the tip opens along the notch lines, which allows the lens to be easily implanted into the capsule bag and take the correct position in it.

FIG. 2. An injector for implanting an IOL in an embodiment with six longitudinal incisions and laxative grooves on the tip.

1 - injector body

2 - nozzle tip

3 - piston

4 - longitudinal laxative incisions

5 - laxative grooves

The implementation of the utility model (Fig. 1). After cataract removal by phacoemulsification according to the usual method, an injector (1) with an IOL inserted into it and having a cone-shaped tip with an acute cut angle (2) and longitudinal laxative cuts from the outer edge of the tip (4) is placed with the cut down into the corneal incision. Next, the tip of the injector is introduced into the front chamber to a depth slightly more than the length of the laxative incisions and with the help of the piston (3) they begin to advance the lens to the tip. At the time of extrusion of the IOL, the tip opens along the notch lines, which allows the lens to be easily implanted into the capsule bag and take the correct position in it. If longitudinal cuts (4) and relaxing grooves (5) (Fig. 2) are made on the injector nozzle at the moment of extrusion of the lens under its pressure, the injector tip breaks along the lines of relaxing grooves, which ensures an unhindered exit of the IOL from the injector tip and the lens position in the capsule bag.

Claims (1)

An injector for implantation of an intraocular lens, comprising a body portion with a tip having an acute cutting angle of the tip, and a piston, characterized in that the tip of the injector is conical, the outer diameter of the wide part is no more than 2.4 mm, the outer diameter of the narrow part is not more than 1 , 6 mm, while from the outer edge of the tip of the injector perform four longitudinal weakening incisions 2-3 mm long.

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