SU959779A1

SU959779A1 - Device for application of incisions on conrnea

Info

Publication number: SU959779A1
Application number: SU792846924A
Authority: SU
Inventors: Юрий Николаевич Широков; Сергей Анатольевич Соловьев; Виталий Петрович Осецкий; Святослав Николаевич Федоров; Валерий Васильевич Дурнев
Original assignee: Предприятие П/Я А-1882
Priority date: 1979-12-05
Filing date: 1979-12-05
Publication date: 1982-09-23

Description

Изобретение относитс к медицинской технике, а именно к офтальмологическим инструментам, предназначенным дл выполнени заданных по глубине и форме несквозных надрезов роговицы при операции на глазу с целью изменени его рефракции.The invention relates to medical technology, in particular to ophthalmic instruments designed to perform predetermined depth and shape of non-through cuts of the cornea during eye surgery in order to change its refraction.

Изйестио устройство дл нанесени .надрезов на роговицу глаза, содержащее размещенный в державке режущий инструмент с фиксатором.This is a device for applying cuts to the cornea of the eye, which contains a cutting tool with a retainer placed in the holder.

С целью профилактики перфс(рации роговой оболочки в ходе операции, что вл етс одним из важнейших услрвий получени заданного оптического результата, в качестве ограничител в устройстве используют губки зажима режущего инструмента, а выступание из них режущего инструмента (осколка бритвенного лезви ) регулируют с помощью специального лекала с выступами, при этом, высота каждого выступа соответствует 0,1 мм L.In order to prevent perfs (the radio sets of the cornea during the operation, which is one of the most important conditions for obtaining a given optical result, the jaws of the cutting tool are used as a limiter in the device, and the protrusion of the cutting tool (a piece of a razor blade) is adjusted using a special patterns with protrusions, in this case, the height of each protrusion corresponds to 0.1 mm L.

Однако известное устройство отмечаетс низкой точностью дозировани требуемого уровн выступани режущего инструмента,возможностью затуплени о лекало режущей кромки до начёша операции, трудоемкостью многократного Изменени уровн выступани However, the known device is noted for the low accuracy of dosing the required level of protrusion of the cutting tool, the possibility of blunting the cutting edge before the operation, the complexity of repeatedly Changing the level of protrusion

режущего инструмента в ходе операции в св зи с увеличением то.тцины роговицы от центра к периферии согласно ее анатомии.the cutting tool during the operation in connection with an increase in the cornea tumor tip from the center to the periphery according to its anatomy.

Целью изобретени вл етс обеспечение дозированной глубины надрезов .The aim of the invention is to provide a dosed notch depth.

Поставленна цель достигаетсг тем, что устройство дл нанесени The goal is achieved by the fact that the device for applying

10 надрезов на роговицу глаза, содержащем размещенный в державке режущий инструмент с фиксаторе, рабоча часть, державки снабжена сферическим упором с пазом дл размещени режуще15 го инструмента, при .этом фиксатор . состоит из цангового зажима с подпружиненньм хвостовиком и взаимодействующего с последним микрометрического винта с индикатором.10 cuts on the cornea of the eye, containing a cutting tool with a retainer placed in the holder, the working part, the holder with a spherical stop with a groove for accommodating the cutting tool, with this retainer. consists of a collet clamp with a spring-loaded shank and a micrometric screw with an indicator that interacts with the last.

2020

На фиг. 1 изображено устройство, продольный разрез; на фиг. 2 - то же, вид сверху.FIG. 1 shows a device, a longitudinal section; in fig. 2 - the same, top view.

Устройство дл нанесени надрезов на роговицу глаза содержит цилиндрический корпус - державку 1, в The device for applying incisions to the cornea of the eye comprises a cylindrical body - a holder 1,

25 центральном отверстии которой ,установлен цанговый зажим 2 с пазами (Г , гайкой 3 и пружиной 4, зажатой между хвостовиком 5 и шайбой 6. Шайба 6 зафиксирована в державке 125 of the central hole of which a collet clamp 2 is installed with grooves (G, nut 3 and spring 4, clamped between the shank 5 and the washer 6. The washer 6 is fixed in the holder 1

Claims

30 with a pin 7, which simultaneously serves as a guide for the longitudinal groove of the collet

2. The working part of the holder is in the form of a foot 8 with a spherical stop 9 having a longitudinal groove, and in its opposite part there is a thread for a micrometer screw 1Q with indicator 11 and a scale 12. The collet grooves a and (Г and groove in a spherical stop coaxial and parallel.The surgeon places the ifH-cutting tool 13 into the grooves and collets and the spherical stop and tightens it by turning the nut

3. By turning the screw 10, the cutting tool (razor blade) is retracted. in the groove f is flush with the surface of the anvil 9, after which the indications of the indicator 11 of the screw 10 are fixed on. scale 12. Further, by the opposite rotation of the screw 10, the blade 13 is advanced by a predetermined amount, which corresponds to the required depth of cuts, as a result of which the tool is fully prepared for the operation. During the operation, the surgeon can easily adjust the depth of the incisions depending on the task and quickly replace the blunted cutting tool. As a result of the application of the invention, the perforation of the cornea of the eye is completely eliminated, the accuracy and quality of the incisions and thus the operation as a whole are significantly improved. At the same time, the operation time is reduced by 5 times. In addition, the device makes the operation difficult and requiring Long-term skills simple and accessible even for beginner eye surgeons, which allows it to be incorporated into a wide clinical practice. The invention includes a device for applying incisions to the cornea of the eye, comprising a cutting tool fixed in the holder with a lock, characterized in that, in order to provide a dosed depth of notches, the working part of the holder is provided with a spherical stop with a groove for accommodating the cutting tool, wherein the lock consists from collet clamp with spring-loaded shank and micrometric screw interacting with the last with indicator. Sources of information taken into account in the examination 1. Mauth Kio Tin Sclerokeratoplasty in the treatment of progressive myopia. Bulletin of Ophthalmology, 1976, No. 3, p. 24-26.