ROTATIONALLY TORQUABLE ENDOVASCULAR DEVICE WITH VARIABLE FLEXIBILITY TIP

摘要

Endovascular and intravascular devices and methods of manufacturing endovascular and intravascular devices may be provided. In one implementation, an intravascular device including an elongated sheath and an elongated coil distal to the sheath may be provided. The coil may include a first coil segment formed from a plurality of wires helically-wound at a first coil angle; a second coil segment formed from a first subset of the plurality of wires that is helically-wound at a second coil angle that is different from the first coil angle; and a third coil segment formed from a second subset of the plurality of wires that is helically-wound at a third coil angle that is different from the first and second coil angles. The coil segments may be configured such that flexibility of the coil increases in a longitudinal direction toward the distal end of the coil.