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 …

The present invention relates to:(1) guidewire support/placement catheters;(2)
support/placement catheters with imaging;(3) atherectomy catheters,(4) atherectomy …

US PATENT DOCUMENTS 4,178,935 A 12/1979 Gekhaman et al. 4,552,554 A 11, 1985
Gould et al. 4,654,024 A 3, 1987 Crittenden et al. 4,686,982 A 8, 1987 Nash 4,771,774 A …

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 guidewire positioning and support devices, method for using them,
method of treating a subject using them, and systems including such guidewire positioning …

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 …