32 patents
Utility
Optical coherence tomography for biological imaging
12 Dec 23
Described herein are catheters for use with Optical Coherence Tomography (OCT) that include an optical fiber core having a first refractive index and an interface medium having a second refractive index, where the first and second refractive indexes are mismatched such that receiving electronics configured to receive optical radiation reflected from the reference interface and the target operate in a total noise range that is within 5 dB of the shot noise limit.
John F. Black, Maegan K. Spencer, Michael Zung, Charles W. McNall, Evangeline Lumabas, Michael H. Rosenthal, John B. Simpson
Filed: 22 Feb 22
Utility
Occlusion-crossing devices
24 Oct 23
A catheter system includes a catheter that includes an outer shaft and a rotatable inner shaft having a drill tip.
Himanshu N. Patel
Filed: 6 Oct 20
Utility
Optical pressure sensor assembly
15 Aug 23
Optical pressure sensor assemblies that can be used with existing catheters and imaging systems.
Peter H. Smith, Manish Kankaria
Filed: 1 Mar 21
Utility
Atherectomy catheter with laterally-displaceable tip
8 Aug 23
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 main catheter body axis.
Michael H. Rosenthal, Michael Zung, Nicholas J. Spinelli, Charles W. McNall, John B. Simpson, John F. Black
Filed: 20 Aug 18
Utility
Optical coherence tomography with graded index fiber for biological imaging
16 May 23
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.
Manish Kankaria
Filed: 22 Mar 21
Utility
Micro-molded anamorphic reflector lens for image guided therapeutic/diagnostic catheters
18 Apr 23
A catheter system for optical coherence tomography includes an elongate catheter body, an optical fiber in the elongate catheter body, and an anamorphic lens assembly coupled with a distal end of the optical fiber.
Himanshu N. Patel, Manish Kankaria, Kin F. Chan
Filed: 14 Jun 21
Utility
Atherectomy catheters with imaging
9 Aug 22
An atherectomy catheter includes an elongate flexible catheter body, an elongate deflectable distal tip coupled to the catheter body at a hinge point, a rotatable cutter near the distal end of the catheter body, and a drive shaft extending within the catheter body and configured to rotate the cutter.
Priyanshu Gupta, Michael Zung, Charles W. McNall, Himanshu N. Patel, Christina Van
Filed: 15 Mar 13
Utility
Atherectomy catheter with serrated cutter
2 Aug 22
An atherectomy catheter device includes an elongate body, a drive shaft extending proximally to distally within the elongate body, and a cutter attached to the drive shaft.
Himanshu N. Patel, Richard R. Newhauser, Anthony J. Fernandez, Vincent Yeh
Filed: 1 Oct 18
Utility
Atherectomy catheter
12 Jul 22
Described herein are atherectomy catheters, systems and methods that include longitudinally displaceable drive shafts that drive actuation of one or more cutters at the distal end of the catheter.
Himanshu N. Patel, John B. Simpson, Charles W. McNall, Maegan K. Spencer, Michael Zung, Priyanshu Gupta, Nicholas J. Spinelli, Myra L. Fabro, Eduardo Sucgang, Theodore W. Ketai
Filed: 2 Jul 19
Utility
Catheter device with detachable distal end
31 May 22
An atherectomy catheter includes an elongate catheter body, a cutter at a distal end of the catheter body, and a nosecone attached to a distal end of the catheter body.
Anthony J. Fernandez, Richard R. Newhauser, Himanshu N. Patel
Filed: 1 Jun 17
Utility
Optical coherence tomography for biological imaging
29 Mar 22
Described herein are catheters for use with Optical Coherence Tomography (OCT) that include an optical fiber core having a first refractive index and an interface medium having a second refractive index, where the first and second refractive indexes are mismatched such that receiving electronics configured to receive optical radiation reflected from the reference interface and the target operate in a total noise range that is within 5 dB of the shot noise limit.
John F. Black, Maegan K. Spencer, Michael Zung, Charles W. McNall, Evangeline Lumabas, Michael H. Rosenthal, John B. Simpson
Filed: 9 Jul 19
Utility
Atherectomy catheters and occlusion crossing devices
29 Mar 22
An atherectomy catheter includes an elongate flexible catheter body, a cutter near the distal end of the catheter body, a drive shaft connected to the cutter and extending within the catheter body, an imaging element near the distal end of the catheter body.
Himanshu N. Patel, John B. Simpson, Anthony J. Fernandez, Richard R. Newhauser, Priyanshu Gupta, Michael Zung, Wendy Ngo Lam, Maegan K. Spencer, Peter Howard Smith, Stephen C. Davies, Nicholas J. Spinelli, Charles W. McNall, Theodore W. Ketai, Manish Kankaria, Mark W. Askew, Kent C. B. Stalker
Filed: 12 Nov 19
Utility
OCT imaging catheter with lag correction
22 Mar 22
A catheter system includes a catheter body, an imaging sensor, a drive motor, a current sensor, a display, and a controller.
Bjarne B. Christensen
Filed: 25 Jan 17
Utility
Atherectomy catheter with shapeable distal tip
18 Jan 22
An atherectomy catheter for use in a vessel includes an elongate catheter body and an annular cutter.
Himanshu N. Patel, Anthony J. Fernandez, Vincent Yeh
Filed: 30 Jun 17
Utility
Atherectomy catheter drive assemblies
28 Dec 21
A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft.
Brian Y. Tachibana, Charles W. McNall, Michael Zung, Peter Howard Smith, Brian Chiu, Douglas Joseph Scott Bourne, Priyanshu Gupta
Filed: 1 Apr 19
Utility
High speed chronic total occlusion crossing devices
19 Oct 21
An occlusion crossing device includes an outer shaft, an inner shaft, an optical fiber, and a handle attached to the inner shaft and the outer shaft.
Himanshu N. Patel, John B. Simpson, Ryan Radjabi
Filed: 18 Jul 19
Utility
Occlusion-crossing devices, imaging, and atherectomy devices
5 Oct 21
A catheter device for crossing occlusions includes an elongate body, a central lumen extending within the elongate body from the proximal end to the distal end, a rotatable tip at the distal end of the elongate body, and an OCT imaging sensor.
John B. Simpson, Himanshu N. Patel, Michael Zung, Charles W. McNall, Priyanshu Gupta, Maegan K. Spencer, Christopher B. White, Dennis W. Jackson, John F. Black
Filed: 16 Feb 17
Utility
Occlusion-crossing devices, atherectomy devices, and imaging
5 Oct 21
Described herein are methods for producing and identifying characteristic (“crescent shaped”) regions indicative of an atherectomy plaque within a vessel, and systems and devices adapted to take advantage of this characteristic region.
Maegan K. Spencer, John B. Simpson, Stephen C. Davies
Filed: 23 May 16
Utility
Tissue collection device for catheter
24 Aug 21
Versatile tissue collection devices that can provide reduced crossing profiles, fluid pressure release, and/or easy cleaning or removal.
Priyanshu Gupta, Christina Van, Nicholas Spinelli, John B. Simpson
Filed: 15 Mar 13
Utility
Guidewire positioning catheter
3 Aug 21
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 handle region, and a catheter lumen extending through the elongate catheter body.
Himanshu N. Patel, John B. Simpson
Filed: 5 Apr 17