| 摘要 |
A hand-held instrument (10) for performing a cholangiogram during a laparoscopic surgical procedure is disclosed. The instrument includes a pistol-shaped housing (12) having a cannula (20) mounted at a forward end. Centrally located within the cannula (20) and extending into the housing (12) is a hollow catheter (24). Mounted within the housing are an advancing mechanism (48), a locking mechanism (28) and an injection system (66). The advancing mechanism (48) incrementally extends the catheter (24) from one end of the cannula and the locking mechanism (28) holds the catheter (24) at the extended position. The injection system (66) expels contrast media from a reservoir within the handle (16) of the housing (12) into the catheter (24) for injection into a cystic duct. |
