A catheter device for crossing occlusions includes an elongate catheter shaft, a rotatable tip
configured to rotate relative to the elongate catheter shaft, a drive shaft, and an OCT imaging …

Abstract Catheter-based Optical Coherence Tomography (OCT) systems utilizing an optical
fiber that is positioned off-axis of the central longitudinal axis of the catheter have many …

Described herein are atherectomy catheters, systems and methods that include a distal tip
region that may be moved laterally so that its long axis is parallel with the long axis of the …

Described herein are atherectomy catheters, systems and methods that include
longitudinally displaceable drive shafts that drive actuation of one or more cutters at the …

Versatile tissue collection devices that can provide reduced crossing profiles, fluid pressure
release, and/or easy cleaning or removal. In particular, devices having tissue collection …

Optical pressure sensor assemblies that can be used with existing catheters and imaging
systems. Pressure sensors may be compatible with atherectomy and occlusion-crossing …

A system for optical coherence tomography includes a source of optical radiation, an optical
fiber, and a graded index fiber attached to a distal end of the optical fiber. The optical fiber …

A stylet for re-entry into a vessel includes an elongate body including a proximal portion, a
middle curved portion, a pointed distal end, and a longitudinal axis extending through the …

(57) ABSTRACT A catheter for positioning a guidewire across an occluded portion of a
vessel includes an elongate catheter body, an integrated rotatable distal tip, a proximal …

(57) ABSTRACT A catheter device for crossing occlusions includes an elon gate body, a
central lumen extending within the elongate body from the proximal end to the distal end, a …