Patents by Inventor Lakshmikumar Pillai

Lakshmikumar Pillai 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).

  • Patent number: 10617854
    Abstract: Methods and devices for trans-jugular carotid access are disclosed. Methods within the scope of this disclosure include methods of trans-jugular carotid access originating in the leg of a patient or other location remote to the jugular vein and carotid artery and methods originating at the neck of a patient. Devices used in connection with the disclosed methods may comprise access catheters, lumens, and stylets.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: April 14, 2020
    Assignee: Vascular Access Technologies, Inc.
    Inventor: Lakshmikumar Pillai
  • Publication number: 20200107838
    Abstract: Methods and devices for performing transjugular carotid flow reversal are provided. A flow reversal sheath is advanced through a transjugular carotid fistula. An occlusion balloon is inflated, causing carotid inflow to be diverted through the sheath and through a flow reversal region positioned in the jugular vein. After reversal of blood flow, a carotid intervention is performed.
    Type: Application
    Filed: October 5, 2018
    Publication date: April 9, 2020
    Inventor: Lakshmikumar PILLAI
  • Publication number: 20200069919
    Abstract: The present invention relates to methods of transvascular retrograde access placement and to devices that facilitate these methods. For purposes of the present invention, transvascular retrograde access placement generally comprises the insertion of a vascular catheter into a central blood vessel through the puncturing of the central blood vessel from the inside of the central blood vessel with a needle or other similarly configured device, or a needle-tipped guidewire of the present invention, and exiting that needle from the patient through the skin rather than the traditional approach of inserting a needle from the outside of the skin surface to the inside of a blood vessel.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 5, 2020
    Inventor: Lakshmikumar Pillai
  • Publication number: 20200038057
    Abstract: A system for accessing arterial vasculature from a venous insertion site includes a first elongate tubular member, a second elongate tubular member configured to be disposed within a lumen of the first elongate tubular member, an elongate crossing member including a distal tip comprising a frusto-conical outer surface, and configured to be disposed within a first lumen of the second elongate tubular member, and a stylet configured to be disposed within a lumen of the elongate crossing member, wherein placement of the second elongate tubular member, elongate crossing member, and stylet together through the lumen of the first elongate tubular member does not substantially straighten a curved distal portion of the first elongate tubular member, and wherein the elongate crossing member and stylet are removable from the first lumen of the second elongate tubular member when it is within the lumen of the first elongate tubular member with at least its distal end extending out of the first elongate tubular member.
    Type: Application
    Filed: October 7, 2019
    Publication date: February 6, 2020
    Inventors: Ansaar T. Rai, Lakshmikumar Pillai
  • Patent number: 10470797
    Abstract: A system for accessing arterial vasculature from a venous insertion site includes a first elongate tubular member, a second elongate tubular member configured to be disposed within a lumen of the first elongate tubular member, an elongate crossing member including a distal tip comprising a frusto-conical outer surface, and configured to be disposed within a first lumen of the second elongate tubular member, and a stylet configured to be disposed within a lumen of the elongate crossing member, wherein placement of the second elongate tubular member, elongate crossing member, and stylet together through the lumen of the first elongate tubular member does not substantially straighten a curved distal portion of the first elongate tubular member, and wherein the elongate crossing member and stylet are removable from the first lumen of the second elongate tubular member when it is within the lumen of the first elongate tubular member with at least its distal end extending out of the first elongate tubular member.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: November 12, 2019
    Assignee: SlipStream, LLC
    Inventors: Ansaar T. Rai, Lakshmikumar Pillai
  • Publication number: 20190321600
    Abstract: Various methods employing transvascular access devices are described, including a method of placing a central catheter in a peripheral vein in an arm of a patient; a method of providing percutaneous access to the heart of a patient; a method of clearing a clotted arteriovenous dialysis graft; a method of creating multiple access points into a single blood vessel; a method of creating an AV fistula in a patient; and a method of providing a bypass to a blockage in a popliteal artery in a patient.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 24, 2019
    Inventor: Lakshmikumar Pillai
  • Patent number: 10449334
    Abstract: The present invention relates to methods of transvascular retrograde access placement and to devices that facilitate these methods. For purposes of the present invention, transvascular retrograde access placement generally comprises the insertion of a vascular catheter into a central blood vessel through the puncturing of the central blood vessel from the inside of the central blood vessel with a needle or other similarly configured device, or a needle-tipped guidewire of the present invention, and exiting that needle from the patient through the skin rather than the traditional approach of inserting a needle from the outside of the skin surface to the inside of a blood vessel.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: October 22, 2019
    Assignee: Vascular Technologies, Inc.
    Inventor: Lakshmikumar Pillai
  • Patent number: 10342956
    Abstract: Various methods employing transvascular access devices are described, including a method of placing a central catheter in a peripheral vein in an arm of a patient; a method of providing percutaneous access to the heart of a patient; a method of clearing a clotted arteriovenous dialysis graft; a method of creating multiple access points into a single blood vessel; a method of creating an AV fistula in a patient; and a method of providing a bypass to a blockage in a popliteal artery in a patient.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: July 9, 2019
    Assignee: Vascular Access Technologies, Inc.
    Inventor: Lakshmikumar Pillai
  • Patent number: 10252027
    Abstract: Transvascular access devices and methods for transvascular access are provided. The transvascular access devices can include a guidewire lumen and a guide tube and stylet disposed in a second lumen. The guide tube can be used to control the orientation of the stylet and provide additional support for the stylet. The methods include providing a second entry point in a vessel of a patient remote from a first entry point. A vascular catheter can enter the vascular system of a patient at a first entry point and be advanced to a second entry point. A guide tube can be advanced out the second lumen of the vascular catheter with a stylet advanced out of the guide tube to pierce the vessel wall and skin of the patient at the second entry point. A catheter can be introduced to the vascular system at the second entry point.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: April 9, 2019
    Assignee: Vascular Access Technologies, Inc.
    Inventors: Lakshmikumar Pillai, Patrick Burt, John Lunsford, John Stiggelbout
  • Publication number: 20180185563
    Abstract: Methods, devices, and kits for implanting a vascular graft to perform hemodialysis treatments on patients with renal failure are disclosed. The kits can include access devices comprised of an access catheter having a guidewire lumen and stylet lumen, a guide tube having a curved distal end, a stylet, an actuator handle and a vascular graft. The methods describe techniques for using the described kits and devices for performing vascular procedures, such as percutaneous implantation of the vascular graft.
    Type: Application
    Filed: December 27, 2017
    Publication date: July 5, 2018
    Inventor: Lakshmikumar Pillai
  • Publication number: 20180161550
    Abstract: Methods and devices for treating occlusive peripheral vascular diseases are described. The devices can include an access catheter having a guidewire lumen and stylet lumen, a guide tube having a curved distal end, a stylet, and an actuator handle. The methods describe techniques for using the described devices for performing vascular procedures, such as subintimal angioplasty.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 14, 2018
    Inventors: Lakshmikumar Pillai, Mark Henry Wholey
  • Publication number: 20180161551
    Abstract: Methods and devices for trans-jugular carotid access are disclosed. Methods within the scope of this disclosure include methods of trans-jugular carotid access originating in the leg of a patient or other location remote to the jugular vein and carotid artery and methods originating at the neck of a patient. Devices used in connection with the disclosed methods may comprise access catheters, lumens, and stylets.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 14, 2018
    Inventor: Lakshmikumar Pillai
  • Publication number: 20170189648
    Abstract: Various methods employing transvascular access devices are described, including a method of placing a central catheter in a peripheral vein in an arm of a patient; a method of providing percutaneous access to the heart of a patient; a method of clearing a clotted arteriovenous dialysis graft; a method of creating multiple access points into a single blood vessel; a method of creating an AV fistula in a patient; and a method of providing a bypass to a blockage in a popliteal artery in a patient.
    Type: Application
    Filed: March 20, 2017
    Publication date: July 6, 2017
    Inventor: Lakshmikumar PILLAI
  • Patent number: 9623217
    Abstract: Various methods employing transvascular access devices are described, including a method of placing a central catheter in a peripheral vein in an arm of a patient; a method of providing percutaneous access to the heart of a patient; a method of clearing a clotted arteriovenous dialysis graft; a method of creating multiple access points into a single blood vessel; a method of creating an AV fistula in a patient; and a method of providing a bypass to a blockage in a popliteal artery in a patient.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: April 18, 2017
    Assignee: VASCULAR ACCESS TECHONLOGIES, INC.
    Inventor: Lakshmikumar Pillai
  • Publication number: 20170056625
    Abstract: The present invention relates to methods of transvascular retrograde access placement and to devices that facilitate these methods. For purposes of the present invention, transvascular retrograde access placement generally comprises the insertion of a vascular catheter into a central blood vessel through the puncturing of the central blood vessel from the inside of the central blood vessel with a needle or other similarly configured device, or a needle-tipped guidewire of the present invention, and exiting that needle from the patient through the skin rather than the traditional approach of inserting a needle from the outside of the skin surface to the inside of a blood vessel.
    Type: Application
    Filed: November 9, 2016
    Publication date: March 2, 2017
    Inventor: Lakshmikumar PILLAI
  • Patent number: 9511214
    Abstract: The present invention relates to methods of transvascular retrograde access placement and to devices that facilitate these methods. For purposes of the present invention, transvascular retrograde access placement generally comprises the insertion of a vascular catheter into a central blood vessel through the puncturing of the central blood vessel from the inside of the central blood vessel with a needle or other similarly configured device, or a needle-tipped guidewire of the present invention, and exiting that needle from the patient through the skin rather than the traditional approach of inserting a needle from the outside of the skin surface to the inside of a blood vessel.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: December 6, 2016
    Assignee: VASCULAR ACCESS TECHNOLOGIES, INC.
    Inventor: Lakshmikumar Pillai
  • Publication number: 20160074623
    Abstract: Transvascular access devices and methods for transvascular access are provided. The transvascular access devices can include a guidewire lumen and a guide tube and stylet disposed in a second lumen. The guide tube can be used to control the orientation of the stylet and provide additional support for the stylet. The methods include providing a second entry point in a vessel of a patient remote from a first entry point. A vascular catheter can enter the vascular system of a patient at a first entry point and be advanced to a second entry point. A guide tube can be advanced out the second lumen of the vascular catheter with a stylet advanced out of the guide tube to pierce the vessel wall and skin of the patient at the second entry point. A catheter can be introduced to the vascular system at the second entry point.
    Type: Application
    Filed: November 23, 2015
    Publication date: March 17, 2016
    Inventors: Lakshmikumar PILLAI, Patrick BURT, John LUNSFORD, John STIGGELBOUT
  • Patent number: 9220874
    Abstract: Transvascular access devices and methods for transvascular access are provided. The transvascular access devices can include a guidewire lumen and a guide tube and stylet disposed in a second lumen. The guide tube can be used to control the orientation of the stylet and provide additional support for the stylet. The methods include providing a second entry point in a vessel of a patient remote from a first entry point. A vascular catheter can enter the vascular system of a patient at a first entry point and be advanced to a second entry point. A guide tube can be advanced out the second lumen of the vascular catheter with a stylet advanced out of the guide tube to pierce the vessel wall and skin of the patient at the second entry point. A catheter can be introduced to the vascular system at the second entry point.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: December 29, 2015
    Assignee: Vascular Access Technologies, Inc.
    Inventors: Lakshmikumar Pillai, Patrick Burt, John Lunsford, John Stiggelbout
  • Publication number: 20130324901
    Abstract: Various methods employing transvascular access devices are described, including a method of placing a central catheter in a peripheral vein in an arm of a patient; a method of providing percutaneous access to the heart of a patient; a method of clearing a clotted arteriovenous dialysis graft; a method of creating multiple access points into a single blood vessel; a method of creating an AV fistula in a patient; and a method of providing a bypass to a blockage in a popliteal artery in a patient.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Inventor: Lakshmikumar Pillai
  • Publication number: 20130324967
    Abstract: Transvascular access devices and methods for transvascular access are provided. The transvascular access devices can include a guidewire lumen and a guide tube and stylet disposed in a second lumen. The guide tube can be used to control the orientation of the stylet and provide additional support for the stylet. The methods include providing a second entry point in a vessel of a patient remote from a first entry point. A vascular catheter can enter the vascular system of a patient at a first entry point and be advanced to a second entry point. A guide tube can be advanced out the second lumen of the vascular catheter with a stylet advanced out of the guide tube to pierce the vessel wall and skin of the patient at the second entry point. A catheter can be introduced to the vascular system at the second entry point.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventors: Lakshmikumar Pillai, Patrick Burt, John Lunsford, John Stiggelbout