Valve Test; Pressure-Flow Characteristics - MIETHKE M.blue Mode D'emploi

EN | INSTRUCTIONS FOR USE
Positioning of the peritoneal catheter
The access site for the peritoneal catheter is
left to the surgeon's discretion. For example, it
can be applied paraumbilical or at the height
of the epigastrium. Likewise, various surgical
techniques are available for positioning the peri-
toneal catheter. The recommendation is to pull
the peritoneal catheter using a subcutaneous
tunnelling tool from the valve to the intended
position, if necessary with the aid an auxiliary
incision. The peritoneal catheter that is usually
securely attached to M.blue has an open distal
end and no wall slits. Following the exposure
of the peritoneum or with the aid of a trocar,
the peritoneal catheter (shortened if necessary)
is pushed forward into the open space of the
abdominal cavity.

VALVE TEST

Preoperative valve test
M.blue should be vented before implantation
and checked for permeability. The most careful
way of filling the valve is by aspiration through a
sterile single-use syringe attached to the distal
end of the catheter. The distal end of the valve
is connected and immersed in a sterile physio-
logical salt solution. The valve is continuous if
saline solution can be extracted (fig. 19).
WARNING
Contamination in the solution used for test-
ing can impair the product's performance.
Fig. 19: Patency test
WARNING
Pressure admission through the single-use
syringe should be avoided both at the proxi-
mal and the distal end (fig. 20).
26
Fig. 20: Avoidance of pressurisation
Postoperative valve test
The M.blue 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.

PRESSURE-FLOW CHARACTERISTICS

Horizontal position
The pressure flow characteristics for the M.blue
differential pressure unit are shown below for
pressure levels 0, 5, 10 and 15 in the horizontal
valve position.
M.blue
®