An endoscopic instrument cleaning apparatus includes a syringe coupled to a flushing chamber by a form-fitting stopper. A distal, or instrument receiving end of the flushing chamber is inserted into a supply of cleaning fluid and the plunger of the syringe is drawn out to its fully retracted length,...http://www.google.es/patents/US5511568?utm_source=gb-gplus-sharePatente US5511568 - Endoscopic cannulated instrument flushing apparatus for forcing a cleaning solution through an endoscopic cannulated instrument for removal of gross debris
Endoscopic cannulated instrument flushing apparatus for forcing a cleaning ...