Patents by Inventor Himanshu N. Patel

Himanshu N. Patel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210059713
    Abstract: A catheter system includes a catheter body that includes an outer shaft and a rotatable inner shaft. The inner shaft can include one or more imaging sensors for collecting images outside of the catheter body. The catheter body can include one or more windows for providing imaging access for the imaging sensor(s) outside of the catheter body. A distal portion of the catheter body can include a selective bending feature for bending the distal portion in a defined direction. The catheter body can include one or more markers that the imaging sensor can detect to determine a relative orientation of the catheter body.
    Type: Application
    Filed: April 19, 2019
    Publication date: March 4, 2021
    Applicant: AVINGER, INC.
    Inventors: Himanshu N. PATEL, Daniel LEONG
  • Publication number: 20210015367
    Abstract: 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. The optical fiber and the lens assembly are together configured to provide a common path for optical radiation reflected from a target and from a reference interface between the distal end of the optical fiber and the lens assembly.
    Type: Application
    Filed: February 25, 2020
    Publication date: January 21, 2021
    Inventors: Himanshu N. PATEL, Manish KANKARIA, Kin F. CHAN
  • Patent number: 10869685
    Abstract: A rotating cutting head catheter for passage through chronic total occlusions or other refractory atherosclerotic plaque from diseased arteries is disclosed. The catheter's rotating cutting head is designed to reside safely within an outer protective sheath when not in use. The outer protective sheath contains one or more helical grooves or slots, and the cutting head contains protruding blades or projections that fit into these helical grooves or slots. Application of torque to an inner catheter or wire attached to the cutting head applies spin to the cutting head, and the force of the sheath's helical grooves or slots against the cutting head's protruding blades or projections advances the cutting head outward from the protective sheath. Once extended, the cutting head may now rotate freely. The device may use a guidewire to direct the cutting head to the desired position.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: December 22, 2020
    Assignee: Avinger, Inc.
    Inventors: Himanshu N. Patel, John B. Simpson
  • Publication number: 20200323553
    Abstract: 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. The cutter is configured to excise tissue from the body. The nosecone is configured to hold tissue excised from the cutter. The nosecone includes a distal section, a proximal section, and a connection mechanism that is configured to allow the distal section to attach and detach from the proximal section during use. The distal section includes a plug configured to sit within an inner diameter of the proximal section when the proximal section is connected to the distal section.
    Type: Application
    Filed: June 1, 2017
    Publication date: October 15, 2020
    Inventors: Anthony J. FERNANDEZ, Richard R. NEWHAUSER, Himanshu N. PATEL
  • Publication number: 20200315654
    Abstract: 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.
    Type: Application
    Filed: November 12, 2019
    Publication date: October 8, 2020
    Inventors: 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
  • Publication number: 20200069327
    Abstract: 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. The inner shaft extends within the outer shaft. The inner shaft includes a drill tip at a distal end thereof. The optical fiber extends within the inner shaft substantially along a central axis of the inner shaft. The distal tip of the optical fiber is attached to the drill tip. The handle is configured to rotate the inner shaft and drill tip at speeds of greater than 500 rpm.
    Type: Application
    Filed: July 18, 2019
    Publication date: March 5, 2020
    Inventors: Himanshu N. PATEL, John B. SIMPSON, Ryan RADJABI
  • Publication number: 20200060718
    Abstract: 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.
    Type: Application
    Filed: July 2, 2019
    Publication date: February 27, 2020
    Inventors: 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
  • Patent number: 10568655
    Abstract: Atherectomy catheters and methods of using them are described herein. In particular, described herein are optical coherence tomography (OCT) catheters that may include a distal tip that can be deflected away from the long axis of the device using a multi-channel bushing. The bushing may include at a hinge point that is offset (e.g., located on a side of the elongate body near the distal end of the elongate body) and a rotatable cutter near an imaging assembly that can be driven against the wall with a high mechanical advantage.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: February 25, 2020
    Assignee: Avinger, Inc.
    Inventors: John B. Simpson, Himanshu N. Patel, Anthony J. Fernandez, Richard R. Newhauser
  • Patent number: 10568520
    Abstract: 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. The optical fiber and the lens assembly are together configured to provide a common path for optical radiation reflected from a target and from a reference interface between the distal end of the optical fiber and the lens assembly.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: February 25, 2020
    Assignee: Avinger, Inc.
    Inventors: Himanshu N. Patel, Manish Kankaria, Kin F. Chan
  • Patent number: 10470795
    Abstract: Atherectomy catheter devices having a C-shaped balloon opposite a cutting window out of which a rotating cutter may extend and a proximal annular balloon. The C-shaped first balloon may be used to drive the cutter against a vessel and to deploy the cutter by assisting in deflecting a nosecone (distal tip) to expose the distal-facing cutting edge of the cutter. The proximal annular balloon may be used to occlude blood flow. The device may pulled, pushed or rotated in a vessel with the balloons inflated or deflated.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: November 12, 2019
    Assignee: Avinger, Inc.
    Inventors: Himanshu N. Patel, John B. Simpson, Wendy Ngo Lam
  • Patent number: 10357277
    Abstract: 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. The inner shaft extends within the outer shaft. The inner shaft includes a drill tip at a distal end thereof. The optical fiber extends within the inner shaft substantially along a central axis of the inner shaft. The distal tip of the optical fiber is attached to the drill tip. The handle is configured to rotate the inner shaft and drill tip at speeds of greater than 500 rpm.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: July 23, 2019
    Assignee: Avinger, Inc.
    Inventors: Himanshu N. Patel, John B. Simpson, Ryan Radjabi
  • Patent number: 10349974
    Abstract: 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.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: July 16, 2019
    Inventors: Himanshu N. Patel, John B. Simpson, Charles W. McNall, Maegan K. Spencer, Michael Zung, Priyanshu Gupta
  • Publication number: 20190209206
    Abstract: An atherectomy catheter for use in a vessel includes an elongate catheter body and an annular cutter. The elongate catheter body includes a fixed jog section with a pre-set curvature and a flexible section that has a greater flexibility than a remainder of the elongate catheter body. The fixed jog section and flexible section are formed of a frame including a plurality of circumferential slits therein. Also described herein is an atherectomy catheter for use in a vessel includes an elongate catheter body, an annular cutter, and an s-shaped curved portion in the elongate catheter body. The curved portion includes a frame having a longitudinal proximal spine and a longitudinal distal spine. The longitudinal proximal spine is positioned approximately 180 degrees away from the longitudinal distal spine.
    Type: Application
    Filed: June 30, 2017
    Publication date: July 11, 2019
    Inventors: Himanshu N. PATEL, Anthony J. FERNANDEZ, Vincent YEH
  • Publication number: 20190029714
    Abstract: 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. The cutter includes a serrated annular cutting edge formed on a distal edge of the cutter and a recessed bowl extending radially inwards from the annular cutting edge to a center of the cutter. The recessed bowl has a first curvature. The cutter further includes a plurality of grinding segments extending inwardly from the distal edge within the bowl. Each of the plurality of segments has a second curvature that is different from the first curvature.
    Type: Application
    Filed: October 1, 2018
    Publication date: January 31, 2019
    Inventors: Himanshu N. PATEL, Richard R. NEWHAUSER, Anthony J. FERNANDEZ, Vincent YEH
  • Publication number: 20180256187
    Abstract: A rotating cutting head catheter for passage through chronic total occlusions or other refractory atherosclerotic plaque from diseased arteries is disclosed. The catheter's rotating cutting head is designed to reside safely within an outer protective sheath when not in use. The outer protective sheath contains one or more helical grooves or slots, and the cutting head contains protruding blades or projections that fit into these helical grooves or slots. Application of torque to an inner catheter or wire attached to the cutting head applies spin to the cutting head, and the force of the sheath's helical grooves or slots against the cutting head's protruding blades or projections advances the cutting head outward from the protective sheath. Once extended, the cutting head may now rotate freely. The device may use a guidewire to direct the cutting head to the desired position.
    Type: Application
    Filed: March 15, 2018
    Publication date: September 13, 2018
    Inventors: Himanshu N. PATEL, John B. SIMPSON
  • Publication number: 20180192880
    Abstract: 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. The optical fiber and the lens assembly are together configured to provide a common path for optical radiation reflected from a target and from a reference interface between the distal end of the optical fiber and the lens assembly.
    Type: Application
    Filed: July 13, 2016
    Publication date: July 12, 2018
    Inventors: Himanshu N. PATEL, Manish KANKARIA, Kin F. CHAN
  • Publication number: 20180146978
    Abstract: 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. The inner shaft extends within the outer shaft. The inner shaft includes a drill tip at a distal end thereof. The optical fiber extends within the inner shaft substantially along a central axis of the inner shaft. The distal tip of the optical fiber is attached to the drill tip. The handle is configured to rotate the inner shaft and drill tip at speeds of greater than 500 rpm.
    Type: Application
    Filed: July 8, 2015
    Publication date: May 31, 2018
    Applicant: AVINGER, INC.
    Inventors: Himanshu N. PATEL, John B. SIMPSON, Ryan RADJABI
  • Patent number: 9918734
    Abstract: A rotating cutting head catheter for passage through chronic total occlusions or other refractory atherosclerotic plaque from diseased arteries is disclosed. The catheter's rotating cutting head is designed to reside safely within an outer protective sheath when not in use. The outer protective sheath contains one or more helical grooves or slots, and the cutting head contains protruding blades or projections that fit into these helical grooves or slots. Application of torque to an inner catheter or wire attached to the cutting head applies spin to the cutting head, and the force of the sheath's helical grooves or slots against the cutting head's protruding blades or projections advances the cutting head outward from the protective sheath. Once extended, the cutting head may now rotate freely. The device may use a guidewire to direct the cutting head to the desired position.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: March 20, 2018
    Assignee: Avinger, Inc.
    Inventors: Himanshu N. Patel, John B. Simpson
  • Publication number: 20180042520
    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 handle region, and a catheter lumen extending through the elongate catheter body. The elongate body has a distal region configured to be bent to a set angle. The integrated rotatable distal tip includes one or more channeled flutes extending around the distal tip that are configured to be rotated in a first direction to dissect tissue and a second direction for bluntly contacting tissue. A proximal handle region includes a control for rotating the distal tip in either the first or second directions. The catheter lumen is configured to pass a guidewire.
    Type: Application
    Filed: April 5, 2017
    Publication date: February 15, 2018
    Inventors: Himanshu N. PATEL, John B. SIMPSON
  • Publication number: 20170273711
    Abstract: Atherectomy catheters and methods of using them are described herein. In particular, described herein are optical coherence tomography (OCT) catheters that may include a distal tip that can be deflected away from the long axis of the device using a multi-channel bushing. The bushing may include at a hinge point that is offset (e.g., located on a side of the elongate body near the distal end of the elongate body) and a rotatable cutter near an imaging assembly that can be driven against the wall with a high mechanical advantage.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 28, 2017
    Inventors: John B. SIMPSON, Himanshu N. PATEL, Anthony J. FERNANDEZ, Richard R. NEWHAUSER