Patent ID: 9149607
Filing Date: 2015-10-06
Classification: A61B,A61M

Abstract:
1. A deflectable catheter, which comprises: a) a tubular sheath providing a delivery lumen extending from a proximal sheath portion to a deflectable distal sheath end; b) a handle supporting the proximal sheath portion; c) a longitudinal inner tube supported by the handle, the inner tube comprising an inner tube lumen extending from a distal inner tube end in open communication with the delivery lumen of the sheath to a proximal inner tube end located at a proximal end of the handle; d) a rotatable threaded member supported on an outer tubular rod housed inside the handle, wherein the inner tube extends through the outer tubular rod; e) a slider block housed inside the handle and comprising at least one thread that mates with the threaded member so that a rotational force imparted to the threaded member results in selected translational, but not rotational, movement of the slider block back-and-forth along the handle; f) first and second pull wires extending from the deflectable distal sheath end to the handle; g) wherein the first pull wire has a first distal end at the deflectable distal sheath end and extends through an annulus between the inner tube and the outer tubular rod supporting the threaded member with a proximal end of the first pull wire bearing against a proximal surface of a proximal end wall of the slider block housed inside the handle; h) wherein the second pull wire has a second distal end at the deflectable distal sheath end and extends through the annulus to a proximal U-shaped tube as a change-of-direction device and then to a proximal end of the second pull wire bearing against a distal surface of the proximal end wall of the slider block housed inside the handle; i) wherein the rotatable member is manipulatable in a first direction to translate the slider block in a rearwardly direction along the handle to apply a first pulling force on the first pull wire to thereby deflect the distal sheath end into a first orientation out of alignment, with respect to a longitudinal axis of the sheath; and j) wherein the rotatable member is manipulatable in a second direction, opposite the first direction, to translate the slider block in a forwardly direction to apply a second pulling force on the second pull wire to thereby deflect the distal sheath end into a second orientation out of alignment with respect to the longitudinal axis of the sheath.