3.5 Attaching accessories to the endoscope
41
BF-190 Series OPERATION MANUAL
Ch.3
Attaching the biopsy valve (MD-495) or single use biopsy
valve (MAJ-210)
If a biopsy valve is not properly connected to the instrument channel port, it can
reduce the efficacy of the endoscope’s suction system and may cause patient
debris to leak or spray from the endoscope.
At low temperature, the biopsy valve may become stiff and difficult to attach.
3 Inspect and verify that the base of the valve is in contact with the suction cylinder
properly. Improper attachment makes a gap between the base of the suction valve
and the top of the suction cylinder.
Figure 3.17
1 Attach the biopsy valve to the instrument channel port of the endoscope.
Figure 3.18
2 Confirm that the biopsy valve fits properly.
Gap
No gap
Proper attachment Improper attachment
Instrument
channel port
Biopsy valve
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