SU1217409A1 - Apparatus for removing eye lens - Google Patents

Description

The invention relates to medical technology and can be used in ophthalmic surgery to remove the lens.

The purpose of the invention is to simplify the operation of removing the lens and reducing injuries to eye tissue.

FIG. 1 shows the device, a general view; in fig. 2 view of the device with an open loop before the capture of the lens; in fig. 3 is a section A-A in FIG. 2

The device for removing the lens consists of a hollow handle 1 and a hollow rod 2 rigidly connected with it. Inside the handle 1 and the rod 2 a stepped plunger 3 is movably mounted, one end of which freely comes out of the handle 1, and one end is rigidly fixed on the other flexible wire loop 4. The second end of the loop 4 is rigidly fixed to the front end of the rod 2. In the cavity of the handle I, a spring 5 is installed, supporting one end of the handle protrusion and the other end of the movable pusher 3. For supplying fluid or air to the eye cavity handles 1 in the rear part has an opening 6 with schtutserom 7 and seal 8, and a portion of the pusher has a longitudinal groove 9. The loop is hung on a wire net of 10 mesh, the ends of which are rigidly fixed on the front part of the pusher 3.

The device works as follows.

The device is in its initial position - the pusher 3 is retracted to the extreme position under the action of the spring 5 and the wire loop 4 of the vt is inside the hollow rod 2 - is inserted through the incision into the eye cavity and the end of the rod 2 is brought under the lens, then the finger is pushed on the pusher 3 to open loop 4. At the same time, the pusher compresses the spring 5, begins to move inside the handle 1 and the rod 2 and pushes the wire loop out of the channel of the rod 2. Since the second end of the loop is rigidly fixed on the rod 2, by virtue of its elastic In loop 4, it begins to open and acquires a shape close to the circumference, and at the same time, it netted the net 10. The crystalline lens is grasped with the net 10, after which the pusher 3 is released and it returns to its initial position under the action of the spring 5, pulling the loop 4 at

0, the rod 2, while the edge of the net 10 is stacked, forming the kit with the lens inside, which prevents it from slipping out when removed from the eye, and after the necessary expansion of the incision, the device with the lens is removed from the eye cavity.

If necessary (when the eye shell falls off into the device through the clamp 7 and the opening 6 in the handle 1, fluid or air is supplied, which further along the groove 9 in the push rod 3 enters the eye cavity, where they create the necessary overpressure, straightened its shell .

Thus, a lens removal device can reduce trauma to the eye tissue. In addition, it allows you to adjust the size of the net depending on the size of the lens due to the presence of a movable loop and securely fix it in the net when removed from the eye without additional movement of the tool in the eye cavity, completely excluding the possibility of injury to other parts of it; continuously maintain the natural shape of the eye shell during the extraction of the lens without the use of additional tools, the presence of which complicates the operation and visual control.

All manipulations with the device are carried out with the fingers of one hand, which also simplifies the process of the operation.

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VNIIPIZakaz 1024/7

Circulation 659 Subscription

Branch PPP "Patent,:. Uzhgorod, st. Project, 4

Claims (1)

A DEVICE FOR REMOVING A CRYSTAL, comprising a hollow handle, a hollow rod rigidly connected to it, and a mesh loop, characterized in that, in order to reduce trauma to the eye tissue, it is equipped with a spring-loaded pusher movably mounted in the cavity of the handle and the rod, the loop is rigidly fixed at one end on the rod, and the other on the pusher, while the grid is freely fixed on the rod, and in the pusher along its entire length a longitudinal groove is made to move the rod in it.