Patents by Inventor Stephan A. DeFonzo

Stephan 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).

  • Publication number: 20160038715
    Abstract: 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: Application
    Filed: September 13, 2015
    Publication date: February 11, 2016
    Applicant: Rex Medical, L.P.
    Inventor: Stephan A. DeFonzo
  • Patent number: 9226738
    Abstract: 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: Grant
    Filed: April 2, 2012
    Date of Patent: January 5, 2016
    Assignee: Rex Medical, L.P.
    Inventors: Stephan A. DeFonzo, James S. Tarmin, Thanu Anidharan
  • Patent number: 9168121
    Abstract: 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: Grant
    Filed: December 23, 2012
    Date of Patent: October 27, 2015
    Assignee: Rex Medical, L.P.
    Inventors: John H. Thinnes, Jr., James F. McGuckin, Jr., Stephan A. DeFonzo, Lindsay L. Carter
  • Publication number: 20150209018
    Abstract: 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: Application
    Filed: April 4, 2015
    Publication date: July 30, 2015
    Applicant: Rex Medical, L.P.
    Inventors: Stephan A. DeFonzo, James S. Tarmin, Thanu Anidharan
  • Publication number: 20140142622
    Abstract: 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: Application
    Filed: November 17, 2013
    Publication date: May 22, 2014
    Applicant: Rex Medical, L.P.
    Inventors: Richard T. Briganti, James F. McGuckin, JR., Walter H. Peters, James S. Tarmin, Stephan A. DeFonzo
  • Publication number: 20140100509
    Abstract: 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: Application
    Filed: November 9, 2013
    Publication date: April 10, 2014
    Applicant: Rex Medical, L.P.
    Inventor: Stephan A. DeFonzo
  • Patent number: 8597324
    Abstract: 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: Grant
    Filed: December 28, 2009
    Date of Patent: December 3, 2013
    Assignee: Rex Medical L.P.
    Inventors: Richard T. Briganti, James F. McGuckin, Jr., Walter H. Peters, James S. Tarmin, Stephan A. DeFonzo
  • Patent number: 8591450
    Abstract: 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: Grant
    Filed: May 16, 2011
    Date of Patent: November 26, 2013
    Assignee: Rex Medical L.P.
    Inventor: Stephan A. DeFonzo
  • Publication number: 20130304033
    Abstract: A medical catheter comprising a first return lumen, a plurality of withdrawal lumens, a first clamping member and a plurality of intake extension tubes. Each intake extension tube communicates with an intake lumen of the catheter to provide fluid communication with the respective intake lumens. The intake extension tubes are positioned in a stacked arrangement, and the clamping member has a plurality of posts to receive the stacked tubes to limit lateral movement thereof.
    Type: Application
    Filed: July 21, 2013
    Publication date: November 14, 2013
    Applicant: Rex Medical, L.P.
    Inventors: Stephan A. DeFonzo, John D. Leedle
  • Patent number: 8500674
    Abstract: A medical catheter comprising a first return lumen, a plurality of withdrawal lumens, a first clamping member and a plurality of intake extension tubes. Each intake extension tube communicates with an intake lumen of the catheter to provide fluid communication with the respective intake lumens. The intake extension tubes are positioned in a stacked arrangement, and the clamping member has a plurality of posts to receive the stacked tubes to limit lateral movement thereof.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: August 6, 2013
    Assignee: Rex Medical, L.P.
    Inventors: Stephan A. DeFonzo, John D. Leedle
  • Publication number: 20130178890
    Abstract: 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: Application
    Filed: December 23, 2012
    Publication date: July 11, 2013
    Applicant: Rex Medical L.P.
    Inventors: John H. Thinnes, JR., James F. McGuckin, JR., Stephan A. DeFonzo, Lindsay L. Carter
  • Publication number: 20130066364
    Abstract: 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: Application
    Filed: November 10, 2012
    Publication date: March 14, 2013
    Applicant: Rex Medical
    Inventors: James F. McGuckin, JR., John D. Leedle, James S. Tarmin, Thanu Anidharan, Stephan A. Defonzo
  • Patent number: 8366736
    Abstract: 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: Grant
    Filed: October 30, 2007
    Date of Patent: February 5, 2013
    Assignee: Rex Medical, L.P.
    Inventors: John H. Thinnes, Jr., James F. McGuckin, Jr., Stephan A. DeFonzo, Lindsay L. Carter
  • Patent number: 8323228
    Abstract: A medical catheter comprising a first return lumen, a plurality of withdrawal lumens, a first clamping member and a plurality of intake extension tubes. Each intake extension tube communicates with an intake lumen of the catheter to provide fluid communication with the respective intake lumens. The intake extension tubes are positioned in a stacked arrangement, and the clamping member has a plurality of posts to receive the stacked tubes to limit lateral movement thereof.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: December 4, 2012
    Assignee: Rex Medical L.P.
    Inventors: Stephan A. DeFonzo, John D. Leedle
  • Patent number: 8282668
    Abstract: A vessel filter comprising a mounting section having first and second ends and a first and second filtering section. The filter is movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. In the expanded position a first end of the first filtering section converges to form a first converging region and a second end of the second filtering section converges to form a second converging region. The first converging region is positioned radially and axially inwardly of the first end of the mounting section and the second converging region is positioned radially and axially inwardly of the second end of the mounting section.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: October 9, 2012
    Assignee: Rex Medical, L.P.
    Inventors: James F. McGuckin, Jr., Richard T. Briganti, Stephan A. DeFonzo, John H. Thinnes, Jr.
  • Publication number: 20120232583
    Abstract: 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: Application
    Filed: April 2, 2012
    Publication date: September 13, 2012
    Inventors: Stephan A. DeFonzo, James S. Tarmin, Thanu Anidharan
  • Patent number: 8162972
    Abstract: 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: Grant
    Filed: April 29, 2010
    Date of Patent: April 24, 2012
    Assignee: Rex Medical, LP
    Inventors: James F. McGuckin, Jr., James E. Bressler, John H. Thinnes, Jr., Stephan A. DeFonzo, Lindsay L. Carter
  • Publication number: 20110301522
    Abstract: 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: Application
    Filed: May 16, 2011
    Publication date: December 8, 2011
    Inventor: Stephan A. DeFonzo
  • Patent number: 7866526
    Abstract: An apparatus for endoscopic application of surgical staples adapted to attach surgical mesh to body tissue includes a frame and an elongated endoscopic section connected to the frame-and extending distally therefrom. A staple storage cartridge is removably supported on a pivotal support system at the distal end portion of the endoscopic section. An elongated pusher system is provided for individually advancing at least one staple at a time distally. The pusher system includes a trigger system to actuate the pusher. The trigger system is provided with perceptible tactile sensing means to indicate when the legs of the staple being advanced are exposed so as to be visible to the user for positioning and orientation purposes.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: January 11, 2011
    Assignee: Tyco Healthcare Group LP
    Inventors: David T Green, Henry Bolanos, Wayne Young, Stephan A DeFonzo, Richard A McGarry, Dominick L Mastri
  • Publication number: 20100305588
    Abstract: 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: Application
    Filed: December 28, 2009
    Publication date: December 2, 2010
    Inventors: Richard T. Briganti, James F. McGuckin, JR., Walter H. Peters, James S. Tarmin, Stephan A. DeFonzo