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4 Viewline Tube Retraction System – Reference Guide
Instruments
K-Wire
ZS-0300
Retractor Tubes
ZS-0429 – ZS-0437:
26mm Diameter Tubes,
40mm – 120mm Lengths
Dilators
ZS-0310 #1 Dilator
ZS-0312 #2 Dilator
ZS-0314 #3 Dilator
ZS-0316 #4 Dilator
ZS-0318 #5 Dilator
Retractor Tubes
ZS-0409 – ZS-0417:
18mm Diameter Tubes,
40mm – 120mm Lengths
Retractor Tubes
ZS-0419 – ZS-0427:
22mm Diameter Tubes,
40mm – 120mm Lengths
Step 3
Slide Dilator #2 (Silver, 13mm) over Dilator
#1.
Slide Dilator #3 (Turquoise, 18mm) over
Dilator #2.
Slide Dilator #4 (Blue, 22mm) over Dilator #3.
Slide Dilator #5 (Grey, 26mm) over Dilator #4.
(Fig.3)
Step 4
Use length markings on Dilator to determine
appropriate Tube length.
Slide Tube down appropriate Dilator until fully
seated.
(Dilator #5 in 26mm Tube shown;
Fig. 4))
Fig. 3  Fig. 4 
Dilation Tube Retractor Insertion
Step 2
Identify the appropriate entry point and
incision length for the Tube:
Procedure General Incision Guidance*
Decompression 2cm off midline
PLIF 3-5cm off midline
TLIF, Pedicle Screw Placement 4-6cm off midline
*Note: Will vary based on patient anatomy.
After incision has been made, place K-wire (if
desired) to identify location and initial entry point.
Place Dilator #1 (Silver, 8mm) over K-wire and
remove K-wire (if applicable).
(Fig.2)
Fig. 2 
Targeting
NOTE: Use of Fluoroscopic imaging may be
used to aid in K-wire placement.
NOTE: Dilator #1 can be used to target the entry
point.
NOTE: Tubes come in 18mm, 22mm and 26mm
diameters. If using 18mm Diameter Tube, stop
dilating after Dilator #3 (Turquoise, 18mm). If
using 22mm Diameter Tube, stop dilating after
Dilator #4 (Blue, 22mm). If using 26mm Tube,
use Dilator #5 (Grey, 26mm).
ZS-SA0790_A