| 主权项 |
1. A surgical instrument comprising:
a hollow cylindrical member having a distal end, a proximal end, and a flexible region along at least a part of the hollow cylindrical member; a malleable tubing disposed over at least an outer surface of the flexible region of the hollow cylindrical member, the malleable tubing having a distal end and a proximal end, the proximal end of the malleable tubing attached to an outer surface of the hollow cylindrical member at a position that is distally spaced from the proximal end of the hollow cylinder member; and an inner hollow cylindrical member disposed within the hollow cylindrical member and having a flexible region along at least a part of the inner hollow cylindrical member, wherein the flexible region of the hollow cylindrical member and the malleable tubing disposed over the flexible region of the hollow cylindrical member are configured to bend multiple times, at least a part of the flexible region of the hollow cylindrical member overlaps at least a part of the flexible region of the inner hollow cylindrical member, the malleable tubing is configured to maintain a bent orientation until the malleable tubing is re-bent by a user, and the hollow cylindrical member and the inner hollow cylindrical member, excluding the flexible regions, are rigid conduits. |
