Automatic MEEK – machine - Humeca

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Het Bijvank 251a, 7544 DB Enschede, The Netherlands
P.O. Box 40175, 7504 RD Enschede, The Netherlands
Phone: +31 53 4762619 Fax: +31 53 4771905
E-mail: info@humeca.nl Web: www.humeca.nl
General remark
Automatic MEEK – machine
Instructions for mounting and dismounting
This booklet only describes how the automatic (two axis driven)
MEEK Micrograft machine is mounted, dismounted and used.
Basic knowledge on the use of the MEEK technique (equipment
and procedure) is supposed to be present already.
This instruction focuses at differences in handling compared to
the conventional machines.
AUT/11-07

Contents
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I. The basic parts of the automatic machine
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I. The basic parts of the automatic machine 4
II. Assembling the machine
II-1. Placing the pneumatic motors 5
I-1a. Placing the motor for drive of the cutting axis 5
I-1b. Placing the motor for drive of the spindle 7
II-2. Connecting the air hoses for pneumatic drive 8
III. Using the machine 10
Fig. 1 The basic parts of the automatic MEEK machine
The automatic MEEK machine consists of the following main parts:
1 The frame with cutting block (single or double)
2 Two identical stainless steel motor housings
3 A pneumatic motor to drive the spindle
4 A pneumatic motor driving the cutting axis (the picture
shows a block motor, but the motor might also be one of
the cylindrical type).
5 A foot pedal (not shown in the picture)
6 A splitted hose with 3 connectors (not shown either).
Attention: The motors are not to be sterilized!!

II. Assembling the machine
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II-1. Placing the pneumatic motors
A new automatic MEEK machine is provided with two motors.
However, if your existing motor driven machine was modified to an
automatic model, probably your original motor was suitable to reuse
it to drive the cutting axis.
Fig. 3. The motor is placed in the
motor housing
Fig. 4. The motor in correct position
in its housing
Fig. 2. the two motors that are supplied in case of a new machine
Fig. 2 shows both motors of a new machine. Please note that the
couplings of the motors (the round plastic parts) are not the same
size. The motor with the smallest coupling is the one for drive of
the cutting axis; the other motor will drive the spindle (movement of
the cutting block). The two motor housings are identical.
Now place the casing with the motor inside on the machine in a
way that the two screws 10 slide into the two slits 3a at the
bottom side of the casing (marked with red colour in fig. 5).
Push the plastic coupling of the motor over the corresponding
metal coupling of the knives axis and push further until the
screw 9 comes into the slot 3b of the casing (fig. 6). Fasten
screw 9 by hand (fig. 7).
Attention: prevent the motor from falling out of the casing!
II-1a. Placing the motor for drive of the cutting axis
This procedure is not different from the one already known:
See fig. 3 and 4. A circulating nurse places the unsterile motor
into the sterile casing, which is held in position by authorized
personnel. The motor is placed in the casing in such a way that
the sound reducer (the cylinder with porous material at the back
of the motor) comes in the little pipe at the back of the casing.
Fig. 5. The screws 10 must slide
into the slits 3a
Fig. 6. Placing the motor for drive of
the cutting axis on the machine

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Fig. 7. Fixing the motor housing with motor inside to the machine
II-1b. Placing the motor for drive of the spindle
Put the motor with the larger coupling in the second motor
housing (procedure same as shown in fig. 3 and 4). Push the
plastic coupling of the motor over the corresponding metal
coupling of the spindle axis and push further until the screw 9a
comes into the slot 3b of the casing (fig. 8 and 9). Fasten screw
9a (fig. 10).
Fig. 10. Fixing the motor housing with motor inside to the machine
II-2. Connecting the air hoses for pneumatic drive
The automatic MEEK machine was supplied with a hose with Y-
crossing and 3 connectors. Two connectors are identical and
one is different. Connect the 2 identical connectors to the two
motors of the machine (simply push the connectors over the
motor inlets, as shown in fig. 11).
Fig. 8. Placing the motor for driving
the spindle axis on the machine
Fig. 9. Motor in correct position
Fig. 11. Coupling the
hose to the motor

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The foot pedal has two connections. One hose is already fixed
to a connection. Connect the other end of that hose to the third
connector of the hose supplied with the machine (fig. 12).
III. Using the machine
After having filled the cutting block with a cork plate and graft, put
the block on the machine at the side of the motor that will drive the
spindle. Now press the foot pedal. You will notice that the block will
not move instantly. This is for safety reasons. The block will start
running after you push it a little in the direction of movement while
pressing the foot pedal (see fig. 14).
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Fig. 12. Coupling the hose of the machine to the hose of
the foot pedal
Connect the inlet of the foot pedal to the pressure air outlet in
the operating theatre. Because there is a large variety in hose
diameters and connectors in use at hospitals, we cannot supply
the air hose between the foot pedal and the pressure system in
the operating room. Please arrange a suitable hose for that
purpose yourself. We’re happy to assist you if necessary. A
pressure of 5-6 bar is required to run the motors.
The apparatus is now ready
for use (fig. 13). Lubricate
the machine as usual.
For dismounting the
machine, you act in reverse
order.
Fig. 14. For safety reasons the block will only move after a
gentle push
When the block reaches the other side of the machine, it will stop
automatically. Please take it off and go ahead with a second block
if you like. Of course the cutting procedure is speeded up when
two blocks are used, especially if both blocks are double blocks.
Fig. 13. Automatic MEEK
machine after assemblage