RU94015005A - Ophthalmologic instrument - Google Patents

Abstract

FIELD: medicine, in particular, devices for ophthalmologic operations. SUBSTANCE: the ophthalmologic instrument uses a body with a cutting member, having an external tube with a port, accommodating a movable internal tube with a cutting edge; the body accommodates a pusher linked with the internal tube. The external tube is rigidly connected to the body; the pusher is provided with a return spring; the space of the internal tube communicates with the outlet tube of the suction system through a duct in the pusher, and the body with the cutting member is linked with a handle, in which the plunger is engageable with the rod; an adjusting screw is positioned on the proximal end of the rod, and a sleeve with a sealing is installed in the distal part of the rod on the outlet tube coming out of the rod duct, movement of the sleeve is retained by a retaining ring; the plunger reciprocates due to the lever secured on the axle with the aid of the handle; the instrument is turned with a nut for connection to the handle and with a sleeve for rotational movement of the cutting member. EFFECT: enhanced precision of moving-out of the cutting member, which reduces traumatism of the eye sound tissue and considerably reduces the time of operation.

Claims (1)

Translated fromRussian

Изобретение решает задачу повышения точности выдвижения режущего инструмента, что позволяет снизить травматичность здоровой ткани глаза и значительно ускорит проведение операции. Сущность изобретения состоит в том, что в офтальмологическом инструменте, содержащем корпус с режущим элементом, имеющим наружную трубку с окном и размещенную в ней подвижную внутренюю трубку с режущей кромкой, в корпусе размещен толкатель, соединенный с внутренней трубкой. Наружная трубка жестко соединена с корпусом, толкатель снабжен возвратной пружиной, полость внутренней трубки через канал в толкателе сообщается с выводной трубкой отсасывающей системы, а корпус с режущим элементом соединен с рукояткой, в которой плунжер взаимодействует со штоком, на проксимальном конце которого размещен регулировочный винт, в дистальной части штока на выводной трубке выходящей из канала штока, установлена втулка с уплотнением, перемещение которой ограничено стопорным кольцом, а плунжер совершает возвратно-поступательное движение за счет рычага, закрепленного на оси, с помощью ручки, при этом инструмент снабжен гайкой для соединения с рукояткой и снабжен втулкой для вращательного перемещения режущего элемента.The invention solves the problem of increasing the accuracy of the extension of the cutting tool, which reduces the invasiveness of healthy eye tissue and significantly speeds up the operation. The essence of the invention lies in the fact that in the ophthalmic instrument containing a housing with a cutting element having an outer tube with a window and a movable inner tube with a cutting edge disposed therein, a pusher connected to the inner tube is placed in the housing. The outer tube is rigidly connected to the housing, the pusher is provided with a return spring, the cavity of the inner tube through the channel in the pusher communicates with the exhaust pipe of the suction system, and the housing with the cutting element is connected to the handle, in which the plunger interacts with the rod, at the proximal end of which there is an adjustment screw, in the distal part of the stem, on the outlet tube exiting the stem channel, a sleeve with a seal is installed, the movement of which is limited by the retaining ring, and the plunger reciprocates noe motion by means of the lever mounted on an axis by the handle, wherein the tool is provided with a nut for connection with the handle and provided with a sleeve for rotary movement of the cutting element.