Avinger, Inc.

Covidien LP

Other

Theranos, Inc.

Labrador Diagnostics LLC

Priyanshu Gupta

Charles W McNall

Michael Zung

John B Simpson

Himanshu N Patel

Maegan K Spencer

Peter H Smith

Nicholas J Spinelli

Theodore W Ketai

Manish Kankaria

Darren G Doud

John F Black

Brian Y Tachibana

Brandon Fell

Dennis W Jackson

Thomas Pham

Douglas Joseph Scott Bourne

Christopher B White

Ryan Olivera

Brian Chiu

Ralph I McNall

Tomislav Huljev

Kent C B Stalker

Stephen Charles Davies

Clarissa Lui

Mark West Askew

Eduardo U Sucgang

Wendy Ngo Lam

Myra L Fabro

Christina Van

Richard Roy Newhauser, Jr

Anthony J Fernandez

Charles W Mcnall

Peter Howard Smith

Noel Nhu-Ngoc Nguyen

Anupama Karwa

Kent Cb Stalker

Mark W Askew

Ralph Mcnall

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. The atherectomy catheter further includes an optical fiber extending through the drive shaft substantially on-axis with the catheter body and attached to the cutter. The optical fiber is configured to rotate with the drive shaft. The atherectomy catheter further includes a wedge configured to deflect the distal tip away from the catheter body at the hinge point upon axial movement of the drive shaft.

Atherectomy catheters with imaging

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. The catheters described herein may include one or more imaging sensors for imaging before, during or after cutting tissue. In some variations the imaging sensor may be rotated around the perimeter of the catheter independently of the rotation of the cutter. Also describe herein are imaging catheters that may be used without cutters.

Atherectomy catheter

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.

Atherectomy catheters and occlusion crossing devices

Devices, systems and methods for holding and transferring small volume fluid samples are disclosed. Holding vessels, including holding vessels having two or more internal compartments for holding small volume fluid samples, are disclosed. Transfer vessels for receiving small volume fluid samples from such holding vessels are disclosed. Transfer vessels for combining small volume fluid samples from such holding vessels are disclosed. Methods for providing small volume fluid samples for analysis with small loss of sample are disclosed. Methods for providing small volume fluid samples for analysis using automated sample analysis devices and systems, with small loss of sample, are disclosed.

Transfer vessel and methods for reducing sample loss

A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.

Atherectomy catheter drive assemblies

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. The rotatable tip is configured to rotate relative to the elongate body. The OCT imaging sensor includes an optical fiber coupled with the rotatable tip and configured to rotate therewith. A distal end of the elongate body includes one or more markers configured to occlude the OCT imaging sensor as it rotates. A fixed jog in the elongate body proximal to the distal end of the catheter positions the distal end of the catheter at an angle relative to the region of the catheter proximal to the fixed jog and is aligned with the one or more markers on the elongate body.

Occlusion-crossing devices, imaging, and atherectomy devices

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 devices with multiple configurations to facilitate navigation through narrow vessel cross-sections while also providing adequate tissue storage capacity. Additionally, the devices may include detachable components that allow easy removal, cleaning, and replacement during a procedure. Furthermore, venting elements and sections may be included to relieve fluid buildup in storage reservoirs.

Tissue collection device for catheter

An imaging device includes a hollow flexible shaft having a central longitudinal axis and an imaging window therein. An optical fiber extends within the hollow flexible shaft substantially along the central axis. A distal tip of the optical fiber is attached to the hollow flexible shaft and aligned with the imaging window so as to transfer an optical coherence tomography signal through the imaging window. A handle is attached to the hollow flexible shaft configured rotate the hollow flexible shaft at speeds of greater than 1,000 rpm.

Chronic total occlusion crossing devices with imaging

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 and an imaging shaft connected to the imaging element and extending within the catheter body. The cutter and the imaging element are mechanically isolated, and the drive shaft is configured to be axially translated relative to the imaging shaft and the catheter body.

Balloon atherectomy catheters with imaging

A catheter for performing a procedure at a treatment site in the lumen of a blood vessel. The catheter includes an elongate tubular shaft having a proximal bend, a distal bend and a hinge element. A distal portion of the shaft includes a window extending through the sidewall of the shaft between the hinge element and the distal end of the elongate tubular shaft. A working element is disposed within the lumen of the elongate tubular shaft and is configured for performing the procedure through the window at the treatment site. The bends and hinge element are configured to urge the window against a wall of the vessel at the treatment site.

Method for manipulating catheter shaft

Atherectomy catheters with longitudinally displaceable drive shafts

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 proximal portion, the middle curved portion, and the pointed distal end. The proximal portion and the middle curved portion have substantially circular cross-sections. The middle curved portion has a pre-shaped curve along the longitudinal axis configured to match a curve of an occlusion-crossing device. The pointed distal end has an s-curve along the longitudinal axis and a flattened portion along the longitudinal axis, the flattened portion having a substantially oblong cross-section.

Re-entry stylet for catheter

Growing community of inventors

Palo Alto, CA, United States of America

Priyanshu Gupta