Troubleshooting Checklist - Medtronic ProstivaRF Therapy 8930 Bedienungsanleitung

8930EN_7.fm 12/17/10 2:44 pm
UCxxxxxx EN
7 x 9 inches (178 mm x 229 mm)
Chapter 7
110

Troubleshooting Checklist

Troubleshooting Checklist

Table 7-1. Troubleshooting Checklist
Symptom
Impedance is
■
greater than or
equal to 180 Ω
(Ohms)
English 8930 System User Guide 2010-12
MA07445A008 Rev X
The following troubleshooting checklist is intended to augment the
system user interface by providing some additional guidance to
help you prevent problems encountered during treatment.
The action and prevention instructions in Table 7-1 are
recommendations based on clinical experience. The selection of
the appropriate corrective action or continued treatment is in
the clinician's sole medical judgment.
Probable Cause
Shields may not be
■ ■
withdrawn
Needles may be in
■ ■
capsule
■
Needle may be
■ ■
touching prostatic
stone
■
Needles may be in
■ ■
subvascular
adipose tissue
Actions Prevention
Check shields. Ensure needles
■
and shields are at
appropriate
lengths in
accordance with
the prescribed
treatment protocol.
Redeploy needles. Check the
■
ultrasound report
Check needle
for transverse
length.
measurement of
the prostate.
Consider
■
possibility of an
asymmetrical
prostate and adjust
needle length.
Move needles Check the
■
1-2 mm. ultrasound report
for evidence and
Redeploy needle.
location of stones
or unusual
anatomical
differences.
Continue with Be sure needles
■
lesion. As tissue is are accurately
ablated, cell will positioned.
release water,
which reduces
impedance.
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