Fitting Optical Accessories For Leica M844 - Leica M844 User Manual

Preparation for operation

Fitting optical accessories for Leica M844

Warning 3
Risk of injury from downward movement of surgical
microscope!
➩Complete all preparations and adjustments to the
stand before the operation.
➩Never balance or re-equip the instrument over the
field of operation.
➩Before re-equipping, always lock the swing arm.
➩After re-equipping, always rebalance the microscope
on the swing arm.
➩Do not release the brakes when the instrument is in an
unbalanced state.
➩Before re-equipping during the operation, first swing
the microscope away from the operating field.
Take care that the articulation brakes are tightened
and the swing arm is blocked before you mount
accessories to your Leica M844 (see page 34).
Fitting objectives
➩Screw the objectives onto the microscope (right-hand
threading).
The 0° assistant's attachment must be directly
attached to the optics carrier.
➩Unscrew the clamping screw as far as necessary using a
screwdriver.
➩Insert the 0° assistant's attachment into the dovetail ring.
➩While holding the 0° assistant's attachment in place, tighten
the clamping screw.
Do not use a beam splitter in addition to the
0° assistant's attachment.
22
Fitting the 0° assistant's attachment
Clamping screw
Leica M844 – Leica M820 / Ref. 10 713 294 / Version I
Fitting the tube
➩Release the clamping screw on the dovetail ring of the 0°
assistant's attachment and remove the black protective cover.
➩Carefully insert the second observer tube and tighten the
clamping screw.
Fitting eyepieces
➩Fasten the eyepieces with the fixing rings in the tubes.
Fitting the Double Wing
We recommend mounting the longer arm of the Double
Wing on the side of the focus housing in order to
achieve optimal ergonomic conditions.
➩Screw out the clamping screw
until it stops by means of the
screwdriver.
➩Insert the attachment of the
Double Wing into the dovetail
ring so that the arrow is
positioned exactly over the
clamping screw.
➩Hold the Double Wing firmly and tighten the clamping screw.
When the combination with the Double Wing is used
we recommend that the main surgeon uses the
UltraLow TM II binocular tube. The UltraLow
binocular tube offers better ergonomic conditions.
TM II