| 主权项 |
1. A medical catheter, comprising:
a tubular shaft member having a proximal shaft end, a distal shaft end, and a shaft outer diameter enclosing a wire guide lumen, at least a distal portion of the wire guide lumen extending longitudinally within the tubular shaft member along a central longitudinal axis of the tubular shaft member; and a distal tip member having a proximal end and a distal end, the proximal end being continuous with the distal shaft end, the distal tip member defining a distal tip lumen in communication with the wire guide lumen, the distal tip lumen extending between the proximal end and a distal end opening disposed on the distal end of the distal tip and having a constant cross-section along the length thereof, wherein the distal tip lumen comprises a proximal tip lumen section and distal tip lumen section, the proximal tip lumen section being disposed about a proximal tip lumen section axis that is aligned with and coincident with the central longitudinal axis of the tubular shaft member, the distal tip lumen section and the distal end opening both being disposed about a distal tip lumen section axis that is offset relative to the central longitudinal axis of the tubular shaft member, the distal tip lumen section axis being parallel to the central longitudinal axis of the tubular shaft member and wherein the distal tip member comprises a proximal tip section and a distal tip section, the proximal tip section having a symmetrical cross-sectional area having a circular outer diameter radially disposed about the proximal tip lumen section axis, and the distal tip section having an asymmetrical cross-sectional area having a circular outer diameter radially offset from the distal tip lumen section axis. |
