Patent ID: 6855137

Claim:
A steerable catheter comprising: a handle comprising at least one steering actuator; a catheter shaft having a proximal end connected to the handle, a distal end opposite the proximal end, and defining a length between said proximal and distal ends, said catheter shaft comprising at least steering wire lumen; at least one steering wire extending through said at least one steering wire lumen of the catheter shaft and connected to said steering actuator; two instrument lumens extending along the length of the catheter shaft, each of said two instrument lumens having a central axis lying on a first plane being extending through said catheter shaft; and two stiffeners coextruded within said catheter shaft and extending along at least a portion of the length of the catheter shaft, each of said two stiffeners having a central axis lying on a second plane extending through said catheter shaft, the second plane being generally perpendicular to the first plane.