Patents by Inventor Stephen A. DeFonzo
Stephen A. 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: 20240138934Abstract: Systems and methods for performing concomitant medical procedures are disclosed. In one aspect, the method involves controlling a first robotic arm to insert a first medical instrument through a first opening of a patient and controlling a second robotic arm to insert a second medical instrument through a second opening of the patient. The first robotic arm and the second robotic arm are part of a first platform and the first opening and the second opening are positioned at two different anatomical regions of the patient.Type: ApplicationFiled: January 8, 2024Publication date: May 2, 2024Inventors: Joshua F. DEFONZO, Alexander Tarek HASSAN, Frederic H. MOLL, David Stephen MINTZ, David M. SCHUMMERS, Paxton H. MAEDER-YORK, Andrew F. O'ROURKE
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Publication number: 20230053963Abstract: A device for closing an aperture in a vessel wall including a covering member positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture. The covering member has a proximal surface and a distal surface, the distal surface having a concave surface and the proximal surface having a raised surface, wherein four openings are positioned in the raised surface. First and second retainers are positionable external of the vessel and first and second connecting members advance the respective first and second retainers toward the covering member.Type: ApplicationFiled: November 7, 2022Publication date: February 23, 2023Applicant: Rex Medical, L.P.Inventors: Stephen A. DeFonzo, James S. Tarmin, Thanu Anidharan
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Patent number: 11504105Abstract: A device for closing an aperture in a vessel wall including a covering member positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture. The covering member has a proximal surface and a distal surface, the distal surface having a concave surface and the proximal surface having a raised surface, wherein four openings are positioned in the raised surface. First and second retainers are positionable external of the vessel and first and second connecting members advance the respective first and second retainers toward the covering member.Type: GrantFiled: December 27, 2019Date of Patent: November 22, 2022Assignee: REX MEDICAL L.P.Inventors: Stephen A. DeFonzo, James S. Tarmin, Thanu Anidharan
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Publication number: 20200237353Abstract: A device for closing an aperture in a vessel wall including a covering member positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture. The covering member has a proximal surface and a distal surface, the distal surface having a concave surface and the proximal surface having a raised surface, wherein four openings are positioned in the raised surface. First and second retainers are positionable external of the vessel and first and second connecting members advance the respective first and second retainers toward the covering member.Type: ApplicationFiled: December 27, 2019Publication date: July 30, 2020Applicant: Rex Medical, L.PInventors: Stephen A. DeFonzo, James S. Tarmin, Thanu Anidharan
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Publication number: 20150290383Abstract: 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: June 27, 2015Publication date: October 15, 2015Applicant: Rex Medical, L.P.Inventors: Stephen A. DeFonzo, John D. Leedle
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Patent number: 9149601Abstract: A dialysis catheter including a first portion having an outer wall having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition region between the first portion and distal portion. A first longitudinally extending venous lumen is configured to deliver blood. First and second independent longitudinally extending arterial lumens are configured to withdraw blood from a patient. The venous lumen and arterial lumen have first and second regions each positioned a first distance from the outer wall of the catheter and a third region positioned a second shorter distance from the outer wall of the catheter to form an arch shaped wall portion progressively increasing in thickness from the third region toward the first region and from the third region to the second region.Type: GrantFiled: November 9, 2013Date of Patent: October 6, 2015Assignee: Rex Medical, L.P.Inventor: Stephen A. DeFonzo
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Patent number: 9084850Abstract: A dialysis catheter having a first portion having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition portion between the first portion and distal portion. The first portion includes first and second independent longitudinally extending blood withdrawal lumens and the transition portion has first and second opened areas separated by a rib, the first opened area forming a first terminal opening for the first withdrawal lumen and the second opened area forming a second terminal opening for the second withdrawal lumen. A longitudinally extending blood delivery lumen configured to deliver blood terminates in a delivery opening in the distal portion of the catheter.Type: GrantFiled: July 21, 2013Date of Patent: July 21, 2015Assignee: Rex Medical L.P.Inventors: Stephen A. DeFonzo, John D. Leedle
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Publication number: 20140066972Abstract: 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 9, 2013Publication date: March 6, 2014Applicant: Rex Medical, L.P.Inventors: James F. McGuckin, JR., James E. Bressler, John H. Thinnes, JR., Stephen A. DeFonzo, Lindsay L. Carter
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Patent number: 8591541Abstract: 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: March 29, 2012Date of Patent: November 26, 2013Assignee: Rex Medical L.P.Inventors: James F. McGuckin, Jr., James E. Bressler, John H. Thinnes, Jr., Stephen A. DeFonzo, Lindsay L. Carter
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Publication number: 20120184986Abstract: 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: March 29, 2012Publication date: July 19, 2012Inventors: James F. McGuckin, JR., James E. Bressler, John H. Thinnes, JR., Stephen A. Defonzo, Lindsay L. Carter
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Publication number: 20100312269Abstract: 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: April 29, 2010Publication date: December 9, 2010Inventors: James F. McGuckin, JR., James E. Bressler, John H. Thinnes, JR., Stephen A. DeFonzo, Lindsay L. Carter
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Publication number: 20040087942Abstract: A surgical biopsy apparatus for cutting tissue comprising a housing having a longitudinal axis, first and second members movable from a retracted position to an extended position with respect to the housing, a third member slidably positioned and extendable with respect to the first member, a fourth member slidably positioned and extendable with respect to the second member, and an electrocautery cutting wire slidable with respect to the third and fourth members to surround a region of tissue positioned between the third and fourth members to cut the tissue.Type: ApplicationFiled: August 15, 2003Publication date: May 6, 2004Applicant: Rex MedicalInventors: James F. McGuckin, Peter W.J. Hinchliffe, Stephen A. Defonzo
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Patent number: 5830221Abstract: There is provided a surgical coil fastener applier for use in applying helical coil fasteners in surgical procedures, such as hernia repair, to affix surgical mesh to tissue. The coil fastener applier includes a housing having a handle extending therefrom and a trigger pivotally mounted on the housing. An elongated tubular portion extends from the housing and includes a drive rod rotatably supported therein and slidably supporting a plurality of coil fasteners thereon. A drive assembly is provided within the housing to rotate the drive rod and coil fasteners. The drive assembly includes an anti-reverse mechanism to allow rotation of the drive rod in only one direction. An actuation assembly is provided within the housing to convert the motion of the trigger into rotary motion for supply to the drive assembly. The drive assembly includes structure to limit the amount of rotary motion supplied to the drive assembly.Type: GrantFiled: September 20, 1996Date of Patent: November 3, 1998Assignee: United States Surgical CorporationInventors: Jeffrey A. Stein, William J. Allen, Richard L. Markus, Alan B. Bachman, Deborah M. Bryan, Henry E. Holsten, Stephen A. DeFonzo, Robert C. Savage