Examination
26   Operator's Manual
 CAUTION
Only use water-soluble acoustic coupling gel. Other coupling gels containing 
ingredients like ethanol, mineral oil, Iodine, lotions, lanolin, aloe vera or methyl or 
ethyl parabenzoic acid can cause transducer damage.
4.2.2  Sheath
Forpatientprotection,asterile,single-use,latexsheathcanbeusedoverthetransducer
beforeperformingexamination.Useacommerciallyavailabletransducersheath.
Ifused,placethelatexsheathoverthetransducerandgastroscopeshaftuptobutnot
coveringthehandle.Rubthetipcarefullytoensurethatallairbubbleshavebeenremoved
fromthetransducer’sacousticwindowarea.Inadditiontothegelontheacousticwindow,
applyasufcientamountofacousticcouplinggelontheoutsideofthesheathatthetipof
thetransducer.
 CAUTION
 
●
Be sure to cover the transducer with a new (unused) transducer sheath to prevent 
infection during examination. If the package of a transducer sheath is open or 
broken, the sterilization of the transducer sheath may not be sufficient. Do not 
use such a transducer sheath.
 
●
The sheath contains natural rubber latex and talc that can cause allergic reactions 
in some individuals. In the USA, refer to FDA Medical Alert MDA91-1.
 
●
Do not exert force on the window area.
Method(forreference):
1.  Placeanappropriateamountofgelinsidesheathoronthetransducersurface.Poor
imagingmayresultifnogelisused.
2.  Insertthetransducerintothesheath.
3.  Pullsheathtightlyovertransducersurfacetoremovewrinklesandairbubbles,and
takecaretoavoidpuncturingthesheath.Securesheathwiththeenclosedelastic
bands.
4.  Inspectthesheathtoensuretherearenoholesortears.
4.2.3  Bite-guard
Placethebite-guardonthetransducersothatafterinsertionofthetransducerthebite-
guardcaneasilybeplacedinthepatient’smouth.Thebite-guardcanalsobeplacedinthe
patient’smouthbeforeinsertingthetransducer.
 WARNING
 
●
The use of a bite-guard is mandatory. Failure to use the bite-guard may result in 
damage to the transducer, which could result in a safety hazard. Damage to the 
transducer due to biting is not covered by the transducer’s warranty.