Endoscopic puncture arrangement comprises a hollow puncture needle and a slidable element held together by a sleeve or a hose, and a sleeve joining the catheter distal end to a flexible metal helix

摘要

The endoscopic puncture arrangement comprises a hollow puncture needle (Pu) and a slidable element (Sg) firmly held together by a sleeve (Hu1) or a hose, and a sleeve (Hu2) joining the distal end of the elastic catheter (Ka) to a flexible metal helix (Mw).