Patents by Inventor Ajitkumar B. Nair
Ajitkumar B. Nair 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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Publication number: 20210346089Abstract: A system configured to cut leaflet tissue at a cardiac valve may comprise a guide catheter having a proximal end and a distal end, wherein the distal end of the guide catheter is steerable to a position above a cardiac valve. The system may also include a hook catheter having a proximal end and a distal end, the hook catheter configured to extend from the distal end of the guide catheter through a first orifice of the cardiac valve. Further, the system may comprise a cutting mechanism extending from the hook catheter, the cutting mechanism configured to cut a portion of leaflet tissue of the cardiac valve. Finally, the system may include a handle coupled to the proximal end of the guide catheter, the handle comprising at least one control operatively connected to the cutting mechanism.Type: ApplicationFiled: May 3, 2021Publication date: November 11, 2021Inventors: Richard Thomas Childs, Scott C. Mosher, Lauren Troxler Harvey, Koji J. Kizuka, Ajitkumar B. Nair
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Publication number: 20210346081Abstract: A system for cutting leaflet tissue at a cardiac valve may comprise a guide catheter having a proximal end and a distal end, wherein the distal end of the guide catheter is steerable to a position above a cardiac valve. The system may also include a handle coupled to the proximal end of the guide catheter, the handle comprising at least one control configured to steer the guide catheter to the position above the cardiac valve. Finally, the system may comprise a cutting mechanism routable through the guide catheter and able to be positioned at the distal end of the guide catheter, the cutting mechanism configured to cut a portion of leaflet tissue of the cardiac valve.Type: ApplicationFiled: May 3, 2021Publication date: November 11, 2021Inventors: Richard Thomas Childs, Scott C. Mosher, Lauren Troxler Harvey, Koji J. Kizuka, Ajitkumar B. Nair, Laura M. Kalvass
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Publication number: 20160361115Abstract: An ablation catheter assembly including a source of ablation energy coupled to a lead wire disposed within an elongated catheter shaft having a proximal end and a distal end, the lead wire having an electrode disposed at the distal end. The ablation catheter assembly including a flexible tip connected to the distal end of the elongated catheter shaft, and a source of conductive fluid coupled to the flexible tip to direct flow of the conductive fluid into contact with the electrode, wherein the conductive fluid provides a conductive path from the electrode to tissue to be ablated.Type: ApplicationFiled: June 9, 2016Publication date: December 15, 2016Inventors: Robert F. Bencini, Ajitkumar B. Nair, Dushyant J. Shah, Simon N.H. Nguyen, Jeffrey A. Sarge, Kevin L. Bencini
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Patent number: 8444661Abstract: Devices, systems and methods for removing foreign bodies within a body lumen are disclosed. An unfolding balloon catheter may include an elongated shaft having an intussuscepting balloon that can be actuated within a body lumen to capture and retrieve an intravascular device. The balloon may be configured to radially and/or axially expand when inflated, enveloping the intravascular device. In certain embodiments, the balloon may be formed by folding the ends of a distensible member inwardly, and then bonding the ends of the distensible member to the elongated shaft to form an expandable sleeve. An adhesive layer located along a portion of the elongated shaft may be used to temporarily secure the balloon to the elongated shaft.Type: GrantFiled: June 28, 2007Date of Patent: May 21, 2013Assignees: Stryker Corporation, Stryker NV Operations LimitedInventors: Ajitkumar B. Nair, Kamal Ramzipoor, Tra Huong Ngo, Hieu T. Nguyen, Maggie Le
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Patent number: 8303520Abstract: An actuating medical device and methods for making and using the same. The actuating medical device may include a proximal shaft portion having a distal end region, an actuating shaft portion attached to the distal end region, one or more actuating members coupled to or otherwise disposed adjacent the actuating shaft portion, and a distal shaft portion attached to the actuating shaft portion. The actuating shaft portion may include a shape memory material and may be adapted to shift between a first configuration and a second configuration. Using the actuating medical device may include positioning the actuating medical device in a blood vessel and shifting the actuating shaft portion between the first and second configurations.Type: GrantFiled: August 25, 2008Date of Patent: November 6, 2012Assignee: Boston Scientific Scimed, Inc.Inventors: Ajitkumar B. Nair, Alain F. Sadaka
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Publication number: 20110218560Abstract: An embodiment is a catheter comprising a first elongate shaft having a proximal end, a distal end and a first lumen therethrough, a wire having a proximal end and a distal end at least partially disposed in the first elongate shaft, the distal end extending distally from the first elongate shaft, and a motion control apparatus connected to the proximal end of the wire, further comprising a device attached to the distal end of the wire for changing the shape of an embolus, wherein the device is configured to change the shape of the embolus to unclog a distal catheter lumen.Type: ApplicationFiled: May 18, 2011Publication date: September 8, 2011Applicants: STRYKER CORPORATION, STRYKER NV OPERATIONS LIMITEDInventors: Kamal Ramzipoor, Ajitkumar B. Nair, Riten Parikh, Andrew Huffmaster, Mehran Bashiri, Pete Phong Pham
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Publication number: 20100234935Abstract: A stent assembly comprises an expandable stent having a first stent backbone which extends from the proximal end of the stent to the distal end of the stent. The stent comprises a first stent back bone oriented in a direction which is substantially parallel to a longitudinal axis of the stent, and a plurality of interconnected first stent members and second stent members. Each of the first stent members is oriented in a substantially longitudinal direction in the unexpanded state and the expanded state. Each of the second stent members is oriented in a substantially longitudinal direction in the unexpanded state and oriented in a substantially circumferential direction in the expanded state. The first stent backbone has a greater column strength than that of the plurality of interconnected stent members.Type: ApplicationFiled: June 2, 2010Publication date: September 16, 2010Applicant: Boston Scientific Scimed, Inc.Inventors: Mehran Bashiri, Mark Phung, Kamal Ramzipoor, Ajitkumar B. Nair
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Publication number: 20080319403Abstract: An actuating medical device and methods for making and using the same. The actuating medical device may include a proximal shaft portion having a distal end region, an actuating shaft portion attached to the distal end region, one or more actuating members coupled to or otherwise disposed adjacent the actuating shaft portion, and a distal shaft portion attached to the actuating shaft portion. The actuating shaft portion may include a shape memory material and may be adapted to shift between a first configuration and a second configuration. Using the actuating medical device may include positioning the actuating medical device in a blood vessel and shifting the actuating shaft portion between the first and second configurations.Type: ApplicationFiled: August 25, 2008Publication date: December 25, 2008Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: AJITKUMAR B. NAIR, ALAIN F. SADAKA
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Publication number: 20080269798Abstract: An embodiment is a catheter comprising a first elongate shaft having a proximal end, a distal end and a first lumen therethrough, a wire having a proximal end and a distal end at least partially disposed in the first elongate shaft, the distal end extending distally from the first elongate shaft, and a motion control apparatus connected to the proximal end of the wire, further comprising a device attached to the distal end of the wire for changing the shape of an embolus, wherein the device is configured to change the shape of the embolus to unclog a distal catheter lumen.Type: ApplicationFiled: July 10, 2008Publication date: October 30, 2008Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Kamal Ramzipoor, Ajitkumar B. Nair, Riten Parikh, Andrew Huffmaster, Mehran Bashiri, Pete Phong Pham
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Patent number: 7416534Abstract: An actuating medical device and methods for making and using the same. The actuating medical device may include a proximal shaft portion having a distal end region, an actuating shaft portion attached to the distal end region, one or more actuating members coupled to or otherwise disposed adjacent the actuating shaft portion, and a distal shaft portion attached to the actuating shaft portion. The actuating shaft portion may include a shape memory material and may be adapted to shift between a first configuration and a second configuration. Using the actuating medical device may include positioning the actuating medical device in a blood vessel and shifting the actuating shaft portion between the first and second configurations.Type: GrantFiled: June 22, 2004Date of Patent: August 26, 2008Assignee: Boston Scientific Scimed, Inc.Inventors: Ajitkumar B. Nair, Alain F. Sadaka
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Patent number: 7052500Abstract: An embolus extractor including elongate shaft having a proximal end and a distal end. The embolus extractor may include first and second struts coupled to the distal end of the shaft. The struts may define a proximally disposed mouth.Type: GrantFiled: October 19, 2001Date of Patent: May 30, 2006Assignee: Scimed Life Systems, Inc.Inventors: Mehran Bashiri, Ajitkumar B. Nair, Pete Phong Pham, Mark Minh Phung, Lilibeth S. Camins
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Publication number: 20040138692Abstract: An embolus extractor including elongated shaft having a proximal end and a distal end. The embolus extractor may include first and second struts coupled to the distal end of the shaft. The struts may define a proximally disposed mouth.Type: ApplicationFiled: January 13, 2003Publication date: July 15, 2004Applicant: Scimed Life Systems, Inc.Inventors: Mark Minh Phung, Pete Phong Pham, Mehran Bashiri, Ajitkumar B. Nair, Beth Camins
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Publication number: 20030078605Abstract: An embolus extractor including elongate shaft having a proximal end and a distal end. The embolus extractor may include first and second struts coupled to the distal end of the shaft. The struts may define a proximally disposed mouth.Type: ApplicationFiled: October 19, 2001Publication date: April 24, 2003Applicant: SciMed Life Systems, Inc.Inventors: Mehran Bashiri, Ajitkumar B. Nair, Pete Phong Pham, Mark Minh Phung, Lilibeth S. Camins