Systems, methods and devices for ablation, crossing, and cutting of occlusions

Abstract

Ablation, crossing, and cutting systems, devices and associated methods, including a crossing device, comprising, in combination: a spring-enhanced handle and body configured to controllably extend and retract a blade within a microcatheter for addressing an occlusion within a vessel of a patient to provide improved access for supplemental treatment and reperfusion.

1 - 10 . (canceled) 
     
     
         11 . An method for addressing blockage within a vessel, the method comprising:
 delivering an apparatus including at least a microcatheter to a desired treatment site;   positioning the microcatheter having at least a blade proximate to a surface of an occlusion, wherein the microcatheter is attached to a body and comprises a lumen;   providing the blade within the lumen of the microcatheter to the surface of the occlusion, wherein the blade is attached to a handle;   advancing the blade to an extended position by manipulation of the handle relative to the body; and   retracting the blade to a natural position by releasing the handle.   
     
     
         12 . The method of  claim 11  wherein the blade is retracted by a spring between the handle and the body. 
     
     
         13 . The method of  claim 11  wherein the method results in reconfiguration of at least a portion of the occlusion such that a different flow condition is achieved within the lumen. 
     
     
         14 . The method of  claim 11 , further comprising: advancing the microcatheter and the blade through a channel created by advancement of the blade to an extended position. 
     
     
         15 . The method of  claim 11 , further comprising providing a supplemental treatment device to the occlusion through a lumen of the blade. 
     
     
         16 . The method of  claim 15  wherein the supplemental treatment device comprises at least one of the following: a guidewire, a PTA balloon, and a stent device. 
     
     
         17 . A kit, comprising:
 a crossing device including-
 a body coupled to a microcatheter at a proximal end of the microcatheter; and 
 a handle coupled to a blade at a proximal end of the blade, wherein the blade disposed within a lumen of the microcatheter, and wherein a sharpened tip of the blade is configured to advance from a natural position within the lumen of the microcatheter to an extended position beyond a distal end of the microcatheter as the handle is advanced relative to the body; and 
   directions for use.   
     
     
         18 . The kit of  claim 17 , further comprising a supplemental treatment device configured to be advanced within the lumen of the microcatheter. 
     
     
         19 . The kit of  claim 18 , further comprising a luer disposed at a proximal end of the handle and configured to guide the supplemental treatment device into the lumen of the microcatheter. 
     
     
         20 . The kit of  claim 18 , wherein the supplemental treatment device is at least one of the following: a guidewire, a PTA balloon, and a stent device. 
     
     
         21 . The kit of  claim 17  wherein the crossing device is configured is a rapid exchange device. 
     
     
         22 . The kit of  claim 17  wherein the tip of the blade comprises a concave end. 
     
     
         23 . The kit of  claim 17  wherein the tip of the blade comprises a convex end. 
     
     
         24 . The kit of  claim 17  wherein the tip of the blade comprises a coring tip. 
     
     
         25 . The method of  claim 11  wherein the blade is configured to receive a guidewire, and wherein delivering an apparatus including at least a microcatheter to a desired treatment site comprises delivering the apparatus over the guidewire to the treatment site. 
     
     
         26 . The method of  claim 11  wherein the blade is configured to move axially and rotationally relative to the microcatheter during operation.