Download Leksell® Multi Purpose Stereotactic Arc

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L E K S E L L® M U L T I P U R P O S E S T E R E O T A C T I C A R C
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3
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Quick reference guide
Leksell® Multi
Purpose
Stereotactic Arc
4
3
40
30
2
20
10
0
11
-10
90
-20
-40
1
6
8
5
FT
9 0 LE
1 2 0 90
60
150
100
RIGHT
90
00
10 1
180
X
10
20 1
30
10
80
POST
60
50
40
210
Y
16
140
150
A NT
9
0
R IG H T
24
0
300 270
110
100
10
90
80
9
Leksell® Multi Purpose Stereotactic
Arc is part of Leksell Stereotactic
System®, which is intended for
localization and diagnosis of
intracranial disorders and their
surgical treatment including
radiosurgery and stereotactic
radiation therapy.
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Introduction
This is a quick reference guide
for Leksell® Multi Purpose
Stereotactic Arc. It is the user’s
responsibility to be fully informed
of its proper use. For detailed
instructions read Leksell® Multi
Purpose Stereotactic Arc,
Instructions for Use.
70
60
50
40
Z
Caution
The user must read and fully
understand the Hazard Notices
and other Notices contained in
Leksell® Multi Purpose Stereotactic
Arc, Instructions for Use.
Names and abbreviations
Arc
= Leksell® Multi Purpose
Stereotactic Arc
Main Parts
1 Semicircular arc
2 Instrument carrier
3 Instrument stop holder
– engraved
6 Axis support
7 Arc axis – engraved
8 Arc axis
9 Arc supports – engraved
4 Instrument guide holder
10 Slides
5 Axis support – engraved
11 Instrument screwdriver
Frame = Leksell® Coordinate
Frame G
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2
3
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L E K S E L L® M U L T I P U R P O S E S T E R E O T A C T I C A R C
Arc orientations
Assembling – lateral arc orientations
Lateral right orientation
• The engraved arc axis is on the patient’s right side.
Fitting arc supports and setting Z coordinate
1. Insert an arc support 9 in a slide 10
• The engraved surface of the arc faces anterior.
2. Move support and
align the required Z
coordinate exactly with
the index mark 12
• The X coordinate is set on the RIGHT scale.
120
110
12
100
90
10
80
70
60
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LEFT
�� ��� ��� ��
�� ��� �� ��
20 110 100 9
��
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160 150 140 ANT
RIGHT 10 100 90 80 POST
X
60 50
40
Y
X
R
R
L
��
��
��
��
�� ��� ��� ��� ��� ��� ���
Lateral left orientation
• The engraved arc axis is on the patient’s left side.
• The engraved surface of the arc faces posterior.
• The X coordinate is set on the LEFT scale.
3. Secure the arc support
at the required Z
coordinate.
9
NOTE
Do not overtighten the screw
to secure Z coordinate. Otherwise
it may be difficult to move slide
and arc support along the frame.
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��
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L
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�� ��� ��� ��
��
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LEFT
�� ��� �� ��
RIGHT
20 110 100 9
���
160 150 140 ANT
4. Fit and secure the other
arc support in the slide
in the same manner.
10 100 90 80 POST
X
L
60 50
40
Y
X
R
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Sagittal posterior orientation
• The engraved arc axis is at the patient’s posterior.
• The engraved surface of the arc faces the patient’s
right side.
Fitting slides and setting Y coordinate
1. Insert a slide (with arc
support) 10 over the �� ��� �
���
groove of a side bar.
���
���
���
��
10
��
��
• The Y coordinate is set on the POST scale.
��
��
���
��� ��
��
��� ��� ��� ����
���
�
� ��
��
�� ��
�
P
����
�����
��� ��� ��� ��� �
A
P
Y
�
�� �� �� �� �� �� �� ��� ��� ��� ��� ��� ��� ��� ���
2. Move the slide and align
the required Y coordinate
exactly with the vertical
index mark 13
���
���
���
��
��
� ���
��
��
��
��
Sagittal anterior orientation
• The engraved arc axis is at the patient’s anterior.
13
��
• The engraved surface of the arc faces the patient’s
left side.
• The Y coordinate is set on the ANT scale.
3. Secure the slide with the
instrument screwdriver.
A
130
120
110
30 40
50
100 90
80
Y
X
ANT
120 110 100 POST
Y
LEFT
RIGHT
160 150 140 130 1
A
�
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��� ��� ��� ��� ��� ��� ��� ��� �� �� �� �� �� �� ��
P
��� �
4. Fit and secure the other
slide with arc support.
100
90
80
70
100 1
120 130
Y
140 150
160 170
0 70
60
50 40
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L E K S E L L® M U L T I P U R P O S E S T E R E O T A C T I C A R C
Fitting arc axis and setting X coordinate
Ensure the small tab fits into
the corresponding indent.
15
4. Carefully push the unmarked
arc axis inwards and hold
it firmly. Tighten thumbwheel
on back of unmarked arc
16
axis with other hand to
secure the unmarked arc
axis in place. Make sure
there is no narrow opening 16
20
100 90 LEFT
20 110
G-frame
10
30 0
60
5
Y
50
RIGHT
POST
90 80
10 100
X
40
Y
30
90
0
120
3 0 0
0 RIG HT
150
270
240
210 1
8
0
60 50
40
30
25
20
40
ONLY FOR
G-frame
X
30 0
60
5
30
50
40
90
0
120
3 0 0
270
0 RIG HT
150
160
90
RIGHT 10 100
X
80 POST
Y
0 RIGHT
0
60
50
40
• Lateral right orientation – the
engraved arc axis must mate with the arc
support ring on the patient’s right side.
• Lateral left orientation – the engraved
arc axis must mate with the arc support
ring on the patient’s left side.
20
40
160
10
90
RIGHT 10 100
X
5
0 RIGHT
Y
ST 60
80 PO
50
40
Ensure the small tab fits into
the corresponding indent.
ONLY FOR
G-frame
240
1. Align the arc correctly with the frame.
210 1
8
Y
140 ANT
160 150
10
5
100 90 LEFT
20 110
O S T 60
80 P
100 90
R IG HT 10
ONL
7. Tighten the thumbwheels
on both arc axis to
secure the arc at the
desired ring angle.
160
20
FT
100 90 LE
20 110
ame
Y FOR G-fr
Fitting the arc and setting the ring angle
FT
100 90 LE
20 110
25
25
40
140 A NT
160 150
140 ANT
160 150
ONLY FOR
40
140 ANT
160 150
30
14
2. Introduce the ring
of the engraved
arc axis into
the annulus of
the ring on the
arc support.
5. Release the thumbwheel at
the ring on each arc axis.
6. Tilt the arc until the index
mark is exactly aligned with
the desired ring angle.
NOTE
Make sure to use correct scale.
3. Secure the arc axis by
tightening the screw
14 on the engraved
face with the instrument
screwdriver.
LEFT
30
100 9
20 110
ANT
X
1. Loosen thumbwheel at back of
unmarked axis support and slide
unmarked axis to open position.
O S T 60
80 P
100 90
R IG HT 10
15
2. Move the engraved arc axis
and align the required 160 150 140
X coordinate exactly
with the X index mark.
3
3. Fit the ring of the unmarked arc
axis into the ring of the other arc
support.
160
NOTE
If the arc axis holders have
been disassembled ensure
that both have been properly
remounted. There should
be no gap 15 between
them and the back surface
of the arc.
2
NOTE
It is very important that the two
thumbwheels are properly tightened.
Assembling – sagittal arc orientations
NOTE
For sagittal orientations use a straight or slotted
front piece – not a curved one.
Assembling of the arc for sagittal orientations follows
in principal the same workflow as for lateral orientations with some important exceptions.
1. Setting Z coordinate
The Z coordinate is set in
the same way as for lateral
orientations.
130
120
The coordinate is set
on the arc support.
110
100
90
80
70
60
50
40 Z
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L E K S E L L® M U L T I P U R P O S E S T E R E O T A C T I C A R C
���
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���
���
���
���
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�� �
���
�� �
�
��
���
�� �
�� ��
�
���
�� ���
��
��
� ��
3. Setting Y coordinate
For sagittal orientations
the Y coordinate is the
last coordinate set.
1. Insert the stem of the instrument guide
holder 19 into the unmarked slot in
the instrument carrier with the collar
nearest to the patient’s skull.
2. Tighten the thumbwheel to secure
the guide holder.
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20
40
G-frame
X
Y
140 ANT
160 150
ONLY FOR
FT
100 90 LE
20 110
3. Insert the stem of the instrument
stop holder 20 in the marked slot
of the instrument holder with the
collar nearest to the patient’s skull.
5
0 RIGHT
50 40
PO ST 60
The coordinate is set
on the engraved arc
axis 7 with the
Y index mark.
Fitting the instrument guide
and stop holders
NOTE
Make sure to use the correct scale.
4. Align the arc correctly with the frame.
• Sagittal posterior orientation – the
engraved arc axis must mate with
the arc support ring on the patient’s
posterior.
• Sagittal anterior orientation – the engraved
arc axis must mate with the arc support
ring on the patient’s anterior.
Fitting the instrument carrier
Setting the arc angle
4. Move instrument stop holder until
the horizontal index mark on the
carrier is exactly aligned with the
desired mark on the stop holder scale.
5. Tighten the thumbwheel to
secure the stop holder in place.
20
19
6. The arc is now fully
assembled. The stop
insert 21 and guide
insert 22 of the selected
instrument can now be
inserted into the collars.
See User’s manual for
selected instrument!
-40
��
21
22
Removing of the Arc
1. Release locking thumbwheel 18
Remove the Arc from the Frame in the reverse of
that when securing the Arc.
2. Attach the instrument carrier to the arc.
Disassembly
3. Ensure that the carrier is correctly
oriented so that index mark is visible
at the engraved face of the arc.
Disassemble the Arc in the reverse of the assembly
procedure.
4. Move the carrier until the desired arc angle
is exactly aligned with the index mark.
For detailed instructions read Leksell® Multi Purpose
Stereotactic Arc Instructions for Use.
Care & maintenance
Elekta Instrument AB. Article no. 014612.00 DEC03. Printed in Sweden. © All rights reserved. No document may be reproduced in any form without written permission from the copyright holder. The information in this document is subject to
change without notice and does not represent a commitment on the part of Elekta. The Elekta logotype, Leksell® and Leksell Stereotactic System® are registered trademarks of Elekta AB (publ) or it subsidaries
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-30
��
0
��
-20
��
10
��
18
-10
��
5. Tighten thumbwheel
on top to secure the
instrument carrier.
20
2. Setting X coordinate
For sagittal orientations
the X coordinate is set
before setting the
Y coordinate.
The X coordinate
is set on the front
piece and back
piece of the frame.
30
3
40
2
90 80
RIGHT 10 100
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