SU428749A1 - DEVICE FOR CONDUCTING SURGICAL OPERATIONS OF THE EYE - Google Patents

Description

one

The invention relates to medical technology, namely to ophthalmology.

Apparatus for performing surgical ophthalmic operations are known, comprising an electric motor, a magnetically controlled vibrator with a bark, an ultrasonic wave guide, a working tip, and a coolant supply system. However, the cutting effect of such a device is low.

The aim of the invention is to increase the efficiency of crushing the dense tissues of the eye.

To do this, in the device the working tip is made in the form of a rod connected through an ultrasonic waveguide with the core of a magnetostrictive vibrator and the axis of an electric motor, and on the end part of the rod protrusions with cutting edges are located.

FIG. Figure 1 shows schematically a device for surgical operations of the eye; pas figs. 2 — node I in FIG. one.

The device contains an electric motor 1, a magnetostrictive vibrator with a core 2. an ultrasonic waveguide 3, a working tip made in the form of a rod 4 connected through an ultrasonic waveguide with a core and an axis of an electric motor. On the end of the rod 4 are the protrusions 5 with cutting edges. System 6 is used to supply and discharge the coolant.

The device works as follows. The rod 4 is brought into contact with the lens - and an electric current of ultrasonic frequency is inserted into the winding of the vibrator. In this case, oscillations of the length of the core occur in time with the fluctuations of the magnetic flux due to the magnetostriction properties of the metal of the core, these oscillations in the form of longitudinal waves are transmitted to the core

waveguide 3, which transmits them to its opposite end with an increased amplitude, then oscillations are transmitted but rod 4 to its working end in contact with the lens.

Simultaneously with the inclusion of the vibrator, the electric motor is turned on, and the measles of the vibrator together with the rod begin to rotate. An ultrasonic field arises near the end of the rod in the fluid of the anterior chamber of the eye

under the action of which crushing of the crystal masses takes place and displacing them with the liquid, i.e. emulsification. The sharp protrusions on the end part of the rod crush the removed parts mechanically and, besides

addition, create a turbulence of the fluid at the end of the rod. Ultrasonic vibrations of the sharp protrusions at the end of the rod greatly facilitate the cutting and grinding of the lens bag and the solid lens core. Instead

sucked off with lens masses

fluid enters the eye an equal amount of new fluid.

Subject invention

An eye surgery device comprising an electric motor, a magnetostriction vibrator with a bark, an ultrasonic wave guide, a working tip and a coolant supply and removal system, characterized in that in order to increase the efficiency of crushing the dense tissues of the eye, the working tip is in the form of a rod connected through an ultrasonic waveguide with the core of a magnetostrictive vibrator and the axis of an electric motor, and on the end part of the rod there are protrusions with cutting edges E.