Patent ID: 9204893
Filing Date: 2015-12-08
Classification: A61B,A61F,A61M

Abstract:
1. A crossing device, comprising: a body coupled to a microcatheter at a proximal end of the microcatheter; a plunger rod, wherein the body defines a proximal recess into which a portion of a plunger is slidably received; a handle affixed to a cutting blade at a proximal end of the blade, wherein the cutting blade has a generally constant diameter along its length and comprises a sharpened cutting surface defined by a beveled tip at a distalmost end of the cutting blade, wherein the cutting blade is disposed within a lumen of the microcatheter, and the microcatheter and cutting blade are flexible to provide trackability within vessels of a patient, and wherein the cutting blade is sized and shaped to receive a guidewire for intravascular delivery to a target treatment site within a blood vessel of the patient, and further wherein the cutting blade is configured to move axially and rotationally relative to the microcatheter; a spring, a luer configured to be attached to a proximal end of the handle, wherein the luer is configured to facilitate use of a supplemental treatment device in combination with the crossing device, wherein the body, handle, plunger rod, cutting blade, microcatheter, spring, and luer comprise an integrated unit adapted to remain together throughout operation of the crossing device within the patient.