A catheter to be used as an injection tube includes a flexible sheath to be inserted into a celom through an insertion channel of an endoscope for injecting a medicinal solution or the like into the celom through the sheath. The sheath includes a distal end portion which has a distal ...http://www.google.es/patents/US5800411?utm_source=gb-gplus-sharePatente US5800411 - Catheter
