Patents by Inventor Stephan DeFonzo
Stephan DeFonzo 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: 20220370054Abstract: A surgical delivery instrument for delivering a vascular hole closure device having a hole covering member. The delivery instrument comprises a housing, a plunger and an advancer movable within the housing, the advancer having a first portion and a distal portion hingedly connected to the first portion and forming a casing for supporting the hole covering member. Distal movement of the advancer pivots the casing from an angled position to a more linear position to change the orientation of the covering member from a transverse position to a more aligned position. The plunger is advanceable to advance the covering member into the vessel.Type: ApplicationFiled: June 10, 2022Publication date: November 24, 2022Applicant: Rex Medical, L.P.Inventors: Stephan A. DeFonzo, James S. Tarmin, Thanu Anidharan
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Patent number: 11369354Abstract: A surgical delivery instrument for delivering a vascular hole closure device having a hole covering member. The delivery instrument comprises a housing, a plunger and an advancer movable within the housing, the advancer having a first portion and a distal portion hingedly connected to the first portion and forming a casing for supporting the hole covering member. Distal movement of the advancer pivots the casing from an angled position to a more linear position to change the orientation of the covering member from a transverse position to a more aligned position. The plunger is advanceable to advance the covering member into the vessel.Type: GrantFiled: September 21, 2018Date of Patent: June 28, 2022Assignee: Rex Medical L.P.Inventors: Stephan A. DeFonzo, James S. Tarmin, Thanu Anidharan
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Publication number: 20210330307Abstract: A device for closing an aperture in a vessel wall comprising a covering member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture and having a first opening. A first retainer is positionable external of the vessel. A flexible connecting member operatively connects the covering member and the first retainer, wherein the first opening of the covering member is configured to restrict movement of the connecting member.Type: ApplicationFiled: July 10, 2021Publication date: October 28, 2021Applicant: Rex Medical, L.P.Inventors: James F. McGuckin, JR., John D. Leedle, James S. Tarmin, Thanu Anidharan, Stephan A. DeFonzo
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Patent number: 11064986Abstract: A device for closing an aperture in a vessel wall comprising a covering member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture and having a first opening. A first retainer is positionable external of the vessel. A flexible connecting member operatively connects the covering member and the first retainer, wherein the first opening of the covering member is configured to restrict movement of the connecting member.Type: GrantFiled: October 2, 2016Date of Patent: July 20, 2021Assignee: Rex Medical, L.P.Inventors: James F. McGuckin, Jr., John D. Leedle, James S. Tarmin, Thanu Anidharan, Stephan A. DeFonzo
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Patent number: 10639139Abstract: A vessel filter having a first region and a second region, the filter movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. The first region has a filter portion having a converging region to direct particles toward the center of the filter and includes a plurality of spaced apart filter struts. The struts each have a strut height defined as a distance between a first wall and a second wall. A plurality of hooks are at the second region, the hooks having a vessel penetrating tip and a width greater than the width of the strut from which it extends such that the penetrating tip portion of the hook extends beyond the first wall.Type: GrantFiled: November 22, 2016Date of Patent: May 5, 2020Assignee: Argon Medical Devices, Inc.Inventors: James F. McGuckin, Jr., James E. Bressler, John H. Thinnes, Jr., Stephan A. DeFonzo, Lindsay L. Carter
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Patent number: 10390808Abstract: A device for closing an aperture in a vessel wall comprising a covering member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture and having a first opening. A first retainer is positionable external of the vessel. A flexible connecting member operatively connects the covering member and the first retainer, wherein the first opening of the covering member is configured to restrict movement of the connecting member.Type: GrantFiled: April 9, 2016Date of Patent: August 27, 2019Assignee: Rex Medical, L.PInventors: James F. McGuckin, Jr., John D. Leedle, James S. Tarmin, Thanu Anidharan, Stephan A. DeFonzo
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Patent number: 10342524Abstract: A device for closing an aperture in a vessel wall comprising a covering member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture and having a first opening. A first retainer is positionable external of the vessel. A flexible connecting member operatively connects the covering member and the first retainer, wherein the first opening of the covering member is configured to restrict movement of the connecting member.Type: GrantFiled: April 17, 2016Date of Patent: July 9, 2019Assignee: Rex Medical, L.P.Inventors: James F. McGuckin, Jr., John D. Leedle, James S. Tarmin, Thanu Anidharan, Stephan A. DeFonzo
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Publication number: 20190021712Abstract: A surgical delivery instrument for delivering a vascular hole closure device having a hole covering member. The delivery instrument comprises a housing, a plunger and an advancer movable within the housing, the advancer having a first portion and a distal portion hingedly connected to the first portion and forming a casing for supporting the hole covering member. Distal movement of the advancer pivots the casing from an angled position to a more linear position to change the orientation of the covering member from a transverse position to a more aligned position. The plunger is advanceable to advance the covering member into the vessel.Type: ApplicationFiled: September 21, 2018Publication date: January 24, 2019Applicant: Rex Medical, L.P.Inventors: Stephan A. DeFonzo, James S. Tarmin, Thanu Anidharan
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Patent number: 10098621Abstract: A surgical delivery instrument for delivering a vascular hole closure device having a hole covering member. The delivery instrument comprises a housing, a plunger and an advancer movable within the housing, the advancer having a first portion and a distal portion hingedly connected to the first portion and forming a casing for supporting the hole covering member. Distal movement of the advancer pivots the casing from an angled position to a more linear position to change the orientation of the covering member from a transverse position to a more aligned position. The plunger is advanceable to advance the covering member into the vessel.Type: GrantFiled: April 4, 2015Date of Patent: October 16, 2018Assignee: Rex Medical, LP.Inventors: Stephan A. DeFonzo, James S. Tarmin, Thanu Anidharan
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Publication number: 20180154062Abstract: A dialysis catheter including a first portion having a first diameter, an elongated distal portion having a second smaller diameter, and a transition portion The first portion includes first and second independent blood withdrawal lumens extending in the first portion, the first withdrawal lumen terminating in the transition portion in a first terminal opening and the second withdrawal lumen terminating in a second terminal opening, the first and second terminal openings being radially spaced and axially adjacent. A longitudinally extending blood delivery lumen extends in the first portion and terminates in a delivery opening in the distal portion of the catheter, the first and second terminal openings positioned proximally of the delivery opening and each of the first and second terminal openings having a curved wall surrounding a portion of the terminal opening.Type: ApplicationFiled: December 14, 2017Publication date: June 7, 2018Applicant: Argon Medical Devices, Inc.Inventors: Stephan A. DeFonzo, John D. Leedle
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Patent number: 9968345Abstract: A device for closing an aperture in a vessel wall comprising an elongated member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture. The elongated member has a dimension to prevent egress of fluid through the aperture. A material forms two curved legs having ends positionable external of the vessel. The legs curve in different directions and a retention portion is formed in the material to retain the legs during placement of the elongated member inside the vessel.Type: GrantFiled: November 17, 2013Date of Patent: May 15, 2018Assignee: Rex Medical, L.P.Inventors: Richard T. Briganti, James F. McGuckin, Jr., Walter H. Peters, James S. Tarmin, Stephan A. DeFonzo
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Patent number: 9867926Abstract: A dialysis catheter including a first portion having a first diameter, an elongated distal portion having a second smaller diameter, and a transition portion The first portion includes first and second independent blood withdrawal lumens extending in the first portion, the first withdrawal lumen terminating in the transition portion in a first terminal opening and the second withdrawal lumen terminating in a second terminal opening, the first and second terminal openings being radially spaced and axially adjacent. A longitudinally extending blood delivery lumen extends in the first portion and terminates in a delivery opening in the distal portion of the catheter, the first and second terminal openings positioned proximally of the delivery opening and each of the first and second terminal openings having a curved wall surrounding a portion of the terminal opening.Type: GrantFiled: June 27, 2015Date of Patent: January 16, 2018Assignee: Argon Medical Devices, Inc.Inventors: Stephan A. DeFonzo, John D. Leedle
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Patent number: 9763766Abstract: A vessel filter comprising a first region and a second region wherein the filter is movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. A first region has a filter portion having a converging region to direct particles toward the center of the filter and the second region is flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the first end portion. The second region includes a vessel engaging portion at the second end portion. The first region includes a plurality of spaced apart elongated struts with adjacent struts being joined.Type: GrantFiled: October 9, 2015Date of Patent: September 19, 2017Assignee: Argon Medical Devices, Inc.Inventors: John H. Thinnes, Jr., James F. McGuckin, Jr., Stephan A. DeFonzo, Lindsay L. Carter
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Publication number: 20170071719Abstract: A vessel filter having a first region and a second region, the filter movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. The first region has a filter portion having a converging region to direct particles toward the center of the filter and includes a plurality of spaced apart filter struts. The struts each have a strut height defined as a distance between a first wall and a second wall. A plurality of hooks are at the second region, the hooks having a vessel penetrating tip and a width greater than the width of the strut from which it extends such that the penetrating tip portion of the hook extends beyond the first wall.Type: ApplicationFiled: November 22, 2016Publication date: March 16, 2017Applicant: Argon Medical Devices, Inc.Inventors: James F. McGuckin, JR., James E. Bressler, John H. Thinnes, JR., Stephan A. DeFonzo, Lindsay L. Carter
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Publication number: 20170020497Abstract: A device for closing an aperture in a vessel wall comprising a covering member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture and having a first opening. A first retainer is positionable external of the vessel. A flexible connecting member operatively connects the covering member and the first retainer, wherein the first opening of the covering member is configured to restrict movement of the connecting member.Type: ApplicationFiled: October 2, 2016Publication date: January 26, 2017Applicant: Rex Medical, L.P.Inventors: JAMES F. MCGUCKIN, JR., John D. Leedle, James S. Tarmin, Thanu Anidharan, Stephan A. DeFonzo
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Patent number: 9526604Abstract: A vessel filter having a first region and a second region, the filter movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. The first region has a filter portion having a converging region to direct particles toward the center of the filter and includes a plurality of spaced apart filter struts. The struts each have a strut height defined as a distance between a first wall and a second wall. A plurality of hooks are at the second region, the hooks having a vessel penetrating tip and a width greater than the width of the strut from which it extends such that the penetrating tip portion of the hook extends beyond the first wall.Type: GrantFiled: November 9, 2013Date of Patent: December 27, 2016Assignee: Argon Medical Devices, Inc.Inventors: James F. McGuckin, Jr., James E. Bressler, John H. Thinnes, Jr., Stephan A DeFonzo, Lindsay L. Carter
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Publication number: 20160346453Abstract: A vascular device for reducing blood flow in a first vessel or a first graft to enable increased blood flow in a second vessel or second graft. The vascular device includes a support structure having a proximal portion, a distal portion and an intermediate portion, the support structure movable from a reduced profile insertion position to an expanded placement position. A covering material is supported by the structure, the intermediate portion in the expanded position having a transverse dimension less than a transverse dimension of the proximal and distal portions to restrict blood flow through the device and thereby increase blood flow to the second vessel or second graft. A method or reducing blood flow in one vessel or graft and increasing blood flow in another vessel or graft is also disclosed.Type: ApplicationFiled: April 9, 2016Publication date: December 1, 2016Applicant: Rex Medical, L.P.Inventors: JAMES F. MCGUCKIN, JR., Stephan A. DeFonzo
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Patent number: 9463005Abstract: A device for closing an aperture in a vessel wall comprising a covering member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture and having a first opening. A first retainer is positionable external of the vessel. A flexible connecting member operatively connects the covering member and the first retainer, wherein the first opening of the covering member is configured to restrict movement of the connecting member.Type: GrantFiled: November 10, 2012Date of Patent: October 11, 2016Assignee: Rex Medical, L.P.Inventors: James F. McGuckin, Jr., John D. Leedle, James S. Tarmin, Thanu Anidharan, Stephan A. DeFonzo
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Publication number: 20160220237Abstract: A device for closing an aperture in a vessel wall comprising a covering member having a longitudinal axis and positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture and having a first opening. A first retainer is positionable external of the vessel. A flexible connecting member operatively connects the covering member and the first retainer, wherein the first opening of the covering member is configured to restrict movement of the connecting member.Type: ApplicationFiled: April 9, 2016Publication date: August 4, 2016Applicant: Rex Medical, L.P.Inventors: James F. McGuckin, JR., John D. Leedle, James S. Tarmin, Thanu Anidharan, Stephan A. DeFonzo
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Publication number: 20160045298Abstract: A vessel filter comprising a first region and a second region wherein the filter is movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. A first region has a filter portion having a converging region to direct particles toward the center of the filter and the second region is flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the first end portion. The second region includes a vessel engaging portion at the second end portion. The first region includes a plurality of spaced apart elongated struts with adjacent struts being joined.Type: ApplicationFiled: October 9, 2015Publication date: February 18, 2016Applicant: Rex Medical, L.P.Inventors: John H. Thinnes, JR., James F. McGuckin, JR., Stephan A. DeFonzo, Lindsay L. Carter