Patents by Inventor Farhad Khosravi

Farhad Khosravi 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: 20190366041
    Abstract: A method of making a high flexibility distal zone on a neurovascular catheter is provided. The method includes the steps of dip coating a removable mandrel to form a tubular inner layer on the mandrel, coating the tubular inner layer with a tie layer, applying a helical coil to the outside of the tie layer, positioning a plurality of tubular segments, heating the tubular segments to form the high flexibility distal zone on the neurovascular catheter; and removing the mandrel.
    Type: Application
    Filed: August 16, 2019
    Publication date: December 5, 2019
    Inventors: Yi Yang, Farhad Khosravi, Lisa M. Young
  • Patent number: 10470905
    Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a balloon having a reinforced region adjacent an unreinforced region. When the balloon is positioned at a desired location, e.g., within a stent, prosthetic valve, or other tubular prosthesis, the balloon may be inflated to a first pressure causing the reinforced and unreinforced regions to expand substantially simultaneously. Upon inflation of the balloon beyond the first pressure, the reinforced region of the balloon remains at the first diameter and the unreinforced region continues to expand, e.g., to flare one or more ends of the prosthesis.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: November 12, 2019
    Assignee: OSTIAL CORPORATION
    Inventors: Yi Yang, Jake Wolenberg, Archimedes Sanati, Fred H. Co, Farhad Khosravi
  • Publication number: 20190336149
    Abstract: A system for removing embolic material from an intravascular site is disclosed. The system includes an elongate, flexible tubular body, having a proximal end, a distal end, and a tubular side wall defining at least one lumen extending axially there through; an axial restraint carried by the side wall and exposed to the lumen; a rotatable core wire extendable through the lumen, the core wire having a distal end; a limit carried by the core wire, the limit having a bearing surface for rotatably engaging the restraint; and an agitator tip on the distal end of the core wire. The limit and the restraint are engageable to permit rotation of the core wire but limit distal advance of the tip relative to the tubular body.
    Type: Application
    Filed: April 30, 2019
    Publication date: November 7, 2019
    Inventors: Yi Yang, Farhad Khosravi, Lex Philip Jansen, Ryan Taylor Krone, Miranda Ray, Carolyn Stone, Tiffany Tran Ngo, Cyrus Oineza
  • Patent number: 10441745
    Abstract: A neurovascular catheter is provided, such as for distal neurovascular access or aspiration. The catheter includes an elongate flexible tubular body, having a proximal end, a distal end and a side wall defining a central lumen. A distal zone of the tubular body includes a tubular inner liner, a tie layer separated from the lumen by the inner liner, a helical coil surrounding the tie layer, an outer jacket surrounding the helical coil, and an opening at the distal end. Adjacent windings of the helical coil are spaced progressively further apart in the distal direction. The opening at the distal end of the tubular body is enlargeable from a first inside diameter for transluminal navigation to a second, larger inside diameter to facilitate aspiration of thrombus into the lumen.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: October 15, 2019
    Assignee: INCEPT, LLC
    Inventors: Yi Yang, Farhad Khosravi, Lisa M. Young
  • Patent number: 10213191
    Abstract: An apparatus for sealing a puncture through tissue to a vessel includes an elongate occlusion member including an expandable member, a cartridge carried on the occlusion member, and a sealant carried within the cartridge. The cartridge includes an outer member and a pusher member within the outer member. The sealant is disposed within the outer member adjacent the expandable member distal to the pusher member. During use, the occlusion member is introduced into a puncture until the expandable member and the sealant extend from the puncture into the vessel. The expandable member is expanded, and withdrawn until the expanded expandable member contacts the vessel wall, thereby withdrawing the sealant back into the puncture. The outer member is withdrawn to expose the sealant within the puncture, while the pusher member prevents removal of the sealant, and then the cartridge, occlusion member, and pusher member are successively removed.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: February 26, 2019
    Assignee: ACCESSCLOSURE, INC.
    Inventors: Farhad Khosravi, Suresh S. Pai, Celso J. Bagaoisan, Scott R. Sershen, Marlon Moreno, Juan Domingo
  • Publication number: 20180369005
    Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a first balloon carried on its distal end, and a second balloon that includes a distal section overlying at least a portion of the first balloon and a proximal section. The catheter distal end is introduced into the main vessel and positioned through the ostium and stent into the branch until the first balloon is disposed within the stent. The first balloon is expanded to anchor the stent, and the second balloon is expanded to flare the first end of the stent. Optionally, the first balloon is expanded further, e.g., to expand the stent within the branch body lumen and/or dilate the lesion.
    Type: Application
    Filed: June 25, 2018
    Publication date: December 27, 2018
    Inventors: Archimedes Sanati, Farhad Khosravi
  • Patent number: 10149670
    Abstract: Apparatus for sealing a puncture communicating with a blood vessel includes a porous carrier formed from lyophilized hydrogel or other material. The plug may include at least first and second hydrogel precursors and a pH adjusting agent carried by the porous carrier in an unreactive state prior to exposure to an aqueous physiological environment. Once exposed to bodily fluids, the carrier expands as the lyophilized material hydrates to enhance and facilitate rapid hemostasis of the puncture. When the plug is placed into the puncture, the natural wetting of the plug by bodily fluids (e.g., blood) causes the first and second precursors to react and cross-link into an adhesive or “sticky” hydrogel that aids in retaining the plug in place within the puncture.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: December 11, 2018
    Assignee: ACCESS CLOSURE, INC.
    Inventors: Farhad Khosravi, Suresh S Pai, Celso J Bagaoisan
  • Publication number: 20180333282
    Abstract: Methods and devices for treating a luminal pathology affecting an anatomical lumen of a patient comprising forming, in situ, a continuous cohesive layer of covalently-crosslinked hydrogel in a luminal wall of the anatomical lumen.
    Type: Application
    Filed: October 23, 2015
    Publication date: November 22, 2018
    Inventors: Amarpreet S. Sawhney, Farhad Khosravi, Patrick Campbell
  • Publication number: 20180214289
    Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a balloon having a reinforced region adjacent an unreinforced region. When the balloon is positioned at a desired location, e.g., within a stent, prosthetic valve, or other tubular prosthesis, the balloon may be inflated to a first pressure causing the reinforced and unreinforced regions to expand substantially simultaneously. Upon inflation of the balloon beyond the first pressure, the reinforced region of the balloon remains at the first diameter and the unreinforced region continues to expand, e.g., to flare one or more ends of the prosthesis.
    Type: Application
    Filed: March 27, 2017
    Publication date: August 2, 2018
    Inventors: Yi Yang, Jake Wolenberg, Archimedes Sanati, Fred H. Co, Farhad Khosravi
  • Patent number: 10004622
    Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a first balloon carried on its distal end, and a second balloon that includes a distal section overlying at least a portion of the first balloon and a proximal section. The catheter distal end is introduced into the main vessel and positioned through the ostium and stent into the branch until the first balloon is disposed within the stent. The first balloon is expanded to anchor the stent, and the second balloon is expanded to flare the first end of the stent. Optionally, the first balloon is expanded further, e.g., to expand the stent within the branch body lumen and/or dilate the lesion.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: June 26, 2018
    Assignee: OSTIAL CORPORATION
    Inventors: Archimedes Sanati, Farhad Khosravi
  • Publication number: 20180088117
    Abstract: The present disclosure provides micro-array devices for capturing cells in blood and methods of their use. In some aspects, a method for counting cells in a blood sample is provided, the method comprising applying a blood sample onto a CNT device; allowing cells in the blood sample to differentially settle on the CNT device, and identifying and counting cells of preselected type in the blood sample.
    Type: Application
    Filed: September 28, 2017
    Publication date: March 29, 2018
    Inventors: Balaji Panchapakesan, Farhad Khosravi, Shesh N. Rai
  • Patent number: 9687216
    Abstract: Apparatus and methods for sealing a puncture communicating with a blood vessel are provided that include introducing a porous carrier formed from lyophilized hydrogel or other material into the puncture. The plug may include at least one of first and second hydrogel precursors and a pH adjusting agent carried by the porous carrier in an unreactive state prior to exposure to an aqueous physiological environment. Once exposed to bodily fluids, the carrier expands as the lyophilized material hydrates to enhance and facilitate rapid hemostasis of the puncture. When the plug is placed into the puncture, the natural wetting of the plug by bodily fluids (e.g., blood) causes the first and second precursors to react and cross-link into an adhesive or “sticky” hydrogel that aids in retaining the plug in place within the puncture.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: June 27, 2017
    Assignee: Incept, LLC
    Inventors: Amarpreet S. Sawhney, Farhad Khosravi, Suresh S. Pai
  • Publication number: 20160302782
    Abstract: Apparatus and methods for sealing a puncture communicating with a blood vessel are provided that include introducing a porous carrier formed from lyophilized hydrogel or other material into the puncture. The plug may include at least one of first and second hydrogel precursors and a pH adjusting agent carried by the porous carrier in an unreactive state prior to exposure to an aqueous physiological environment. Once exposed to bodily fluids, the carrier expands as the lyophilized material hydrates to enhance and facilitate rapid hemostasis of the puncture. When the plug is placed into the puncture, the natural wetting of the plug by bodily fluids (e.g., blood) causes the first and second precursors to react and cross-link into an adhesive or “sticky” hydrogel that aids in retaining the plug in place within the puncture.
    Type: Application
    Filed: June 28, 2016
    Publication date: October 20, 2016
    Inventors: Amarpreet S. Sawhney, Farhad Khosravi, Suresh S. Pai
  • Patent number: 9386969
    Abstract: Apparatus and methods for sealing a puncture communicating with a blood vessel are provided that include introducing a porous carrier formed from lyophilized hydrogel or other material into the puncture. The plug may include at least one of first and second hydrogel precursors and a pH adjusting agent carried by the porous carrier in an unreactive state prior to exposure to an aqueous physiological environment. Once exposed to bodily fluids, the carrier expands as the lyophilized material hydrates to enhance and facilitate rapid hemostasis of the puncture. When the plug is placed into the puncture, the natural wetting of the plug by bodily fluids (e.g., blood) causes the first and second precursors to react and cross-link into an adhesive or “sticky” hydrogel that aids in retaining the plug in place within the puncture.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: July 12, 2016
    Assignee: Incept, LLC
    Inventors: Amarpreet S. Sawhney, Farhad Khosravi, Suresh S. Pai
  • Patent number: 9375214
    Abstract: Apparatus for sealing a puncture communicating with a blood vessel includes a bioabsorbable sealing member secured to one end of a filament or other retaining member. The sealing member is delivered through the puncture into the vessel, and refracted against the wall of the vessel to provide temporary hemostasis. The sealing member is rapidly absorbed after exposure within the vessel, e.g., to an aqueous or heated physiological environment (e.g., exposure to blood or body temperature), immediately or shortly after completing a medical procedure via the puncture, e.g., within the time period that the patient is ambulatory. Optionally, extravascular sealing material is delivered into the puncture proximal to the sealing member. The retaining member and/or extravascular material may be bioabsorbable, being absorbed at a slower rate than the sealing member. Alternatively, the filament is removed from the puncture after hemostasis is established.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: June 28, 2016
    Assignee: ACCESS CLOSURE, INC.
    Inventors: Puneet K. Khanna, Farhad Khosravi
  • Patent number: 9289195
    Abstract: Apparatus for sealing a puncture communicating with a blood vessel includes an introducer sheath, an occlusion member with a balloon thereon, a retraction assembly, and a syringe assembly including sealing material therein. During use, the introducer sheath is introduced into the puncture. With the balloon in a collapsed state, the occlusion member is introduced through the introducer sheath until the balloon is disposed within the vessel. The introducer sheath is coupled to the retraction assembly, the balloon is expanded, and the occlusion member is partially withdrawn to seal the puncture. A sealing compound is delivered from the syringe assembly through the introducer sheath into the puncture, the syringe assembly triggering the retraction assembly, whereupon the introducer sheath is automatically withdrawn at least partially from the puncture, delivering the sealing compound along the puncture.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: March 22, 2016
    Assignee: Access Closure, Inc.
    Inventors: Celso J. Bagaoisan, Nicanor Domingo, Farhad Khosravi, Suresh S. Pai
  • Patent number: 9283066
    Abstract: Apparatus and methods are provided for use in filtering emboli from a vessel and/or performing thrombectomy and embolectomy, wherein a vascular device comprises one or more support hoops connected near a distal end of a guide wire, each support hoop having an articulation region, and a blood permeable sac affixed to the support hoop or hoops to form a mouth of the blood permeable sac. The mouth of the sac closes when the apparatus is collapsed for removal to prevent material from escaping from the sac.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: March 15, 2016
    Assignee: INCEPT LLC
    Inventors: Leo N. Hopkins, Farhad Khosravi, Amr Salahieh, Jackson F. Demond, Jonah Lepak, Stephen Ramee, Jeff A. Krolik, Richard Renati
  • Publication number: 20150297202
    Abstract: Apparatus for sealing a puncture communicating with a blood vessel includes a porous carrier formed from lyophilized hydrogel or other material. The plug may include at least first and second hydrogel precursors and a pH adjusting agent carried by the porous carrier in an unreactive state prior to exposure to an aqueous physiological environment. Once exposed to bodily fluids, the carrier expands as the lyophilized material hydrates to enhance and facilitate rapid hemostasis of the puncture. When the plug is placed into the puncture, the natural wetting of the plug by bodily fluids (e.g., blood) causes the first and second precursors to react and cross-link into an adhesive or “sticky” hydrogel that aids in retaining the plug in place within the puncture.
    Type: Application
    Filed: April 23, 2015
    Publication date: October 22, 2015
    Applicant: ACCESS CLOSURE, INC.
    Inventors: FARHAD KHOSRAVI, SURESH S. PAI, CELSO J. BAGAOISAN
  • Publication number: 20150245935
    Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a first balloon carried on its distal end, and a second balloon that includes a distal section overlying at least a portion of the first balloon and a proximal section. The catheter distal end is introduced into the main vessel and positioned through the ostium and stent into the branch until the first balloon is disposed within the stent. The first balloon is expanded to anchor the stent, and the second balloon is expanded to flare the first end of the stent. Optionally, the first balloon is expanded further, e.g., to expand the stent within the branch body lumen and/or dilate the lesion.
    Type: Application
    Filed: May 18, 2015
    Publication date: September 3, 2015
    Inventors: Archimedes Sanati, Farhad Khosravi
  • Publication number: 20150164490
    Abstract: Apparatus and methods for sealing a puncture communicating with a blood vessel are provided that include introducing a porous carrier formed from lyophilized hydrogel or other material into the puncture. The plug may include at least one of first and second hydrogel precursors and a pH adjusting agent carried by the porous carrier in an unreactive state prior to exposure to an aqueous physiological environment. Once exposed to bodily fluids, the carrier expands as the lyophilized material hydrates to enhance and facilitate rapid hemostasis of the puncture. When the plug is placed into the puncture, the natural wetting of the plug by bodily fluids (e.g., blood) causes the first and second precursors to react and cross-link into an adhesive or “sticky” hydrogel that aids in retaining the plug in place within the puncture.
    Type: Application
    Filed: February 23, 2015
    Publication date: June 18, 2015
    Inventors: Amarpreet S. Sawhney, Farhad Khosravi, Suresh S. Pai