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).
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Patent number: 10617854Abstract: 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: GrantFiled: December 7, 2017Date of Patent: April 14, 2020Assignee: Vascular Access Technologies, Inc.Inventor: Lakshmikumar Pillai
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Publication number: 20200107838Abstract: 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: ApplicationFiled: October 5, 2018Publication date: April 9, 2020Inventor: Lakshmikumar PILLAI
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Publication number: 20200069919Abstract: 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: ApplicationFiled: August 30, 2019Publication date: March 5, 2020Inventor: Lakshmikumar Pillai
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Publication number: 20200038057Abstract: 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: ApplicationFiled: October 7, 2019Publication date: February 6, 2020Inventors: Ansaar T. Rai, Lakshmikumar Pillai
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Patent number: 10470797Abstract: 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: GrantFiled: July 16, 2019Date of Patent: November 12, 2019Assignee: SlipStream, LLCInventors: Ansaar T. Rai, Lakshmikumar Pillai
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Publication number: 20190321600Abstract: 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: ApplicationFiled: July 5, 2019Publication date: October 24, 2019Inventor: Lakshmikumar Pillai
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Patent number: 10449334Abstract: 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: GrantFiled: November 9, 2016Date of Patent: October 22, 2019Assignee: Vascular Technologies, Inc.Inventor: Lakshmikumar Pillai
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Patent number: 10342956Abstract: 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: GrantFiled: March 20, 2017Date of Patent: July 9, 2019Assignee: Vascular Access Technologies, Inc.Inventor: Lakshmikumar Pillai
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Patent number: 10252027Abstract: 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: GrantFiled: November 23, 2015Date of Patent: April 9, 2019Assignee: Vascular Access Technologies, Inc.Inventors: Lakshmikumar Pillai, Patrick Burt, John Lunsford, John Stiggelbout
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Publication number: 20180185563Abstract: 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: ApplicationFiled: December 27, 2017Publication date: July 5, 2018Inventor: Lakshmikumar Pillai
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Publication number: 20180161550Abstract: 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: ApplicationFiled: December 7, 2017Publication date: June 14, 2018Inventors: Lakshmikumar Pillai, Mark Henry Wholey
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Publication number: 20180161551Abstract: 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: ApplicationFiled: December 7, 2017Publication date: June 14, 2018Inventor: Lakshmikumar Pillai
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Publication number: 20170189648Abstract: 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: ApplicationFiled: March 20, 2017Publication date: July 6, 2017Inventor: Lakshmikumar PILLAI
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Patent number: 9623217Abstract: 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: GrantFiled: May 29, 2013Date of Patent: April 18, 2017Assignee: VASCULAR ACCESS TECHONLOGIES, INC.Inventor: Lakshmikumar Pillai
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Publication number: 20170056625Abstract: 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: ApplicationFiled: November 9, 2016Publication date: March 2, 2017Inventor: Lakshmikumar PILLAI
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Patent number: 9511214Abstract: 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: GrantFiled: June 14, 2006Date of Patent: December 6, 2016Assignee: VASCULAR ACCESS TECHNOLOGIES, INC.Inventor: Lakshmikumar Pillai
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Publication number: 20160074623Abstract: 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: ApplicationFiled: November 23, 2015Publication date: March 17, 2016Inventors: Lakshmikumar PILLAI, Patrick BURT, John LUNSFORD, John STIGGELBOUT
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Patent number: 9220874Abstract: 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: GrantFiled: May 30, 2013Date of Patent: December 29, 2015Assignee: Vascular Access Technologies, Inc.Inventors: Lakshmikumar Pillai, Patrick Burt, John Lunsford, John Stiggelbout
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Publication number: 20130324901Abstract: 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: ApplicationFiled: May 29, 2013Publication date: December 5, 2013Inventor: Lakshmikumar Pillai
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Publication number: 20130324967Abstract: 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: ApplicationFiled: May 30, 2013Publication date: December 5, 2013Inventors: Lakshmikumar Pillai, Patrick Burt, John Lunsford, John Stiggelbout