6 Operating Microscopes Types Uses

Operating Microscopes

introduction

The use of magnification has been a recent addition to a surgeons’ instrument list. 

Loupes and magnifying glasses have been used in the past but operating microscopes have improved the clarity of the vision, the depth of focus and the lighten­ing of the operation site and such complicated two layer suture on small structures can be performed quickly, accura­tely and in comfort with no strain on the neck muscles. Most operating microscope are:

1.      Floor mounted (Fig.above).

2.      Ceiling mounted (Fig.above).

Features of an Operating Microscope

•       Hand operation or foot operation.

•       Automatic focus and zoom.

•       Assistant microscope view arm.

•       Camera attachment arm.

Basic Uses

The operating microscope is used for two purposes:

•       The first is to provide a magnified view of small structures (small vessel and nerve anastomosis).

•       The second is to provide a magnified view of larger structures upon which more precise surgical procedcure needs to be performed (Disc surgery).

Types of Operating Microscopes

There are two basic types of operating microscope, with several variations, depending upon the surgical specialty involved.

•       The first is the manual type, featuring hand controlled fixed magnification stepwise (6x, 9x...) and control knobs for focus 

•       The second type is the zoom system, this has the advantage of offering continuous magnification through the whole range of the magnification of the system including focus through foot controls.

Controls

In the case of the manual microscope, all controls such as focusing, magnification change and tilt of the microscope are done by hand knobs.

•       These can be covered with sterilizable rubber caps provided with the microscope

•       The complete instrument can be draped with a loose sterile plastic drape and the knobs adjusted through this drape.

         With motorized microscopes, the functions are normally controlled by a foot switch

•       The controls can be built into a specially designed operating chair

•       Alternatively a hand switch, inserted into a sterile plastic bag for use during operation.

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