Valve Test - MIETHKE proGAV 2.0 Mode D'emploi

proGAV 2.0
the gravitational unit).
The catheter is then pushed forward from the
burrhole to the selected valve implantation lo-
cation, shortened if necessary, and secured to
the proGAV 2.0 with a ligature. Neither the ad-
justable differential pressure unit nor the gravita-
tional unit should be located directly under the
skin incision. Both valve units have been provi-
ded with an arrow in the flow direction (arrow
towards distal or downwards).
Warning notice: The adjustable differential
pressure unit should not be implanted in an
area which makes the detection or palpation
of the valve difficult (e.g. underneath heavily
scarred tissue).
Warning notice: The catheters should only
be blocked with a sheathed clamp and not
directly behind the valve as they might be
damaged otherwise.
Positioning the peritoneal catheter
The place of access site for the peritoneal catheter
is left to the surgeon's discretion. It can be applied
e. g. para-umbilically in a horizontal direction
or transrectally at the height of the epigastri-
um. Likewise, various surgical techniques are
available for positioning the peritoneal catheter.
We recommend pulling through the peritoneal
catheter, using a subcutaneous tunneling tool
and perhaps with an auxiliary incision, from the
shunt to the intended position of the catheter.
The peritoneal catheter, which is usually securely
attached to the proGAV 2.0, has an open distal
end, but no wall slits. Following the exposure of,
and the entry into, the peritoneum by means of
a trocar, the peritoneal catheter (shortened, if ne-
cessary) is pushed forward into the open space
in the abdominal cavity.
INSTRUCTIONS FOR USE |

VALVE TEST

Preoperative valve test
The most careful way of filling the valve is by
aspiration through a sterile single-use syrin-
ge attached to the distal end of the catheter.
The distal end of the valve is connected and
immersed in a sterile physiological saline soluti-
on. The valve is patent if saline solution can be
extracted (fig. 17).
Warning notice: Contamination in the soluti-
on used for testing can impair the product's
performance.
Fig. 17: Patency test
Warning notice: Pressurisation by the sin-
gle-use syringe should be avoided both at
the proximal and the distal end (fig. 18).
Fig. 18: Avoidance of pressurisation
Postoperative valve test
The proGAV 2.0 has been constructed as a
reliably functioning unit without pump or test
function. The valve test can be performed by
flushing, pressure measurement or pumping.
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