Patents by Inventor George T. Christakis

George T. Christakis 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).

  • Patent number: 7497865
    Abstract: A ring for use in anastomosis. Preferably, the ring is integrally formed from metal, and includes a ring portion and tines and docking members that extend from the ring portion. The ring portion and tines are malleable, and preferably also the docking members are malleable. The ring portion and tines are malleable in the sense that once deformed from a first shape into a second shape, they will not relax back into the first shape from the second. To install the ring in a vessel with the ring portion extending around an incision or other orifice, the tines pierce the tissue around the orifice and are curled against an anvil. The action of curling the tines inverts the tissue near the orifice edges to expose the inside surface of the vessel or organ.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: March 3, 2009
    Assignee: MAQUET Cardiovascular, LLC
    Inventors: Geoffrey H. Willis, Thomas A. Kramer, Paul A. Spence, George T. Christakis, Timothy J. McCoy, John W. Davis, Bradley D. Blackwood, Peter Callas, Michael Francis Wei, Jonathan L. Podmore, Andrew Knight, Thomas J. Ward, Warren P. Williamson, IV
  • Publication number: 20040220597
    Abstract: A ring for use in anastomosis. Preferably, the ring is integrally formed from metal, and includes a ring portion and tines and docking members that extend from the ring portion. The ring portion and tines are malleable, and preferably also the docking members are malleable. The ring portion and tines are malleable in the sense that once deformed from a first shape into a second shape, they will not relax back into the first shape from the second. To install the ring in a vessel with the ring portion extending around an incision or other orifice, the tines pierce the tissue around the orifice and are curled against an anvil. The action of curling the tines inverts the tissue near the orifice edges to expose the inside surface of the vessel or organ.
    Type: Application
    Filed: May 26, 2004
    Publication date: November 4, 2004
    Inventors: Geoffrey H. Willis, Thomas A. Kramer, Paul A. Spence, George T. Christakis, Timothy J. McCoy, John W. Davis, Bradley D. Blackwood, Peter Callas, Michael Francis Wei, Jonathan L. Podmore, Andrew Knight, Thomas J. Ward, Warren P. Williamson
  • Patent number: 6811555
    Abstract: A ring for use in anastomosis. Preferably, the ring is integrally formed from metal, and includes a ring portion and tines and docking members that extend from the ring portion. The ring portion and tines are malleable, and preferably also the docking members are malleable. The ring portion and tines are malleable in the sense that once deformed from a first shape into a second shape, they will not relax back into the first shape from the second. To install the ring in a vessel with the ring portion extending around an incision or other orifice, the tines pierce the tissue around the orifice and are curled against an anvil. The action of curling the tines inverts the tissue near the orifice edges to expose the inside surface of the vessel or organ.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: November 2, 2004
    Assignee: Origin Medsystems, Inc.
    Inventors: Geoffrey H. Willis, Thomas A. Kramer, Paul A. Spence, George T. Christakis, Timothy J. McCoy, John W. Davis, Bradley D. Blackwood, Peter Callas, Michael Francis Wei, Jonathan L. Podmore, Andrew Knight, Thomas J. Ward, Warren P. Williamson, IV
  • Patent number: 6042607
    Abstract: A heart valve can be replaced using minimally invasive methods which include a sutureless sewing cuff that and a fastener delivery tool that holds the cuff against the patient's tissue while delivering fasteners, two at a time to attach the cuff to the tissue from the inside out. The tool stores a plurality of fasteners. Drawstrings are operated from outside the patient's body and cinch the sewing cuff to the valve body. The cuff is releasably mounted on the tool and the tool holds the cuff against tissue and drives the fastener through the cuff and the tissue before folding over the legs of the fastener whereby secure securement between the cuff and the tissue is assured. At least two rows of staggered fasteners are formed whereby fasteners are located continuously throughout the entire circumference of the cuff. A minimally invasive surgical method is disclosed, and a method and tool are disclosed for repairing abdominal aortic aneurysms in a minimally invasive manner.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: March 28, 2000
    Assignee: CardioVascular Technologies LLC
    Inventors: Warren Williamson, IV, Paul A. Spence, George T. Christakis, Thomas J. Ward, Dominic P. DiNovo, George A. Keller, Cecil R. Robinson, E. Dale VanHoose
  • Patent number: 5891160
    Abstract: A one-piece fastener or staple includes a base that contacts tissue and a prong that extends through the tissue. A suture lead is anchored to the base and a needle is attached to the suture lead. A tool positions the fastener adjacent to the tissue, and is operated to drive the prong and the suture needle through the tissue. The tool includes a needle grabber that is operated to grab the needle and pull the needle out of the patient. Since the suture lead is attached to the fastener, a prosthesis can be placed on the suture lead and pushed down to the tissue. A cassette is releasably mounted on the tool and contains the fastener, the suture lead and the suture needle. Alternative forms of the anchor have sutures attached to a base at locations that are spaced apart from each other, and sutures associated with each of two adjacent anchors can be tied together or sutures associated with a single anchor can be tied together. A suture threadably connected to an anchor can be used as a running suture.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: April 6, 1999
    Assignee: CardioVascular Technologies, LLC
    Inventors: Warren P. Williamson, IV, George T. Christakis, Paul Spence, Thomas Ward, Douglas P. Allen
  • Patent number: 5716370
    Abstract: A heart valve can be replaced using minimally invasive methods which include a sutureless sewing cuff that and a fastener delivery tool that holds the cuff against the patient's tissue while delivering fasteners, two at a time in opposite directions, to attach the cuff to the tissue from the inside out. Drawstrings are operated from outside the patient's body and cinch the sewing cuff to the valve body. The cuff is releasably mounted on the tool. The tool stores a plurality of fasteners thereon. Two rows of staggered fasteners are formed whereby fasteners are located continuously throughout the entire circumference of the cuff. A minimally invasive surgical method is disclosed, and a method and tool are disclosed for repairing abdominal aortic aneurysms in a minimally invasive manner.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: February 10, 1998
    Inventors: Warren Williamson, IV, Paul A. Spense, George T. Christakis
  • Patent number: RE40377
    Abstract: A heart valve can be replaced using minimally invasive methods which include a sutureless sewing cuff that and a fastener delivery tool that holds the cuff against the patient's tissue while delivering fasteners to attach the cuff to the tissue from the inside out. The tool stores a plurality of fasteners and is self-contained whereby a fastener is delivered and placed all from inside a vessel. The fasteners are self-forming whereby they do not need an anvil to be formed. Anchor elements are operated from outside the patient's body to cinch a prosthesis to an anchoring cuff of the valve body. The cuff is releasably mounted on the tool and the tool holds the cuff against tissue and drives the fastener through the cuff and the tissue before folding over the legs of the fastener whereby secure securement between the cuff and the tissue is assured. Fasteners are placed and formed whereby fasteners are located continuously throughout the entire circumference of the cuff.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: June 10, 2008
    Assignee: Cardiovascular Technologies LLC
    Inventors: Warren P. Williamson, IV, Paul A. Spence, George T. Christakis, Mark Ortiz
  • Patent number: RE44075
    Abstract: A heart valve can be replaced using minimally invasive methods which include a sutureless sewing cuff that and a fastener delivery tool that holds the cuff against the patient's tissue while delivering fasteners to attach the cuff to the tissue from the inside out. The tool stores a plurality of fasteners and is self-contained whereby a fastener is delivered and placed all from inside a vessel. The fasteners are self-forming whereby they do not need an anvil to be formed. Anchor elements are operated from outside the patient's body to cinch a prosthesis to an anchoring cuff of the valve body. The cuff is releasably mounted on the tool and the tool holds the cuff against tissue and drives the fastener through the cuff and the tissue before folding over the legs of the fastener whereby secure securement between the cuff and the tissue is assured. Fasteners are placed and formed whereby fasteners are located continuously throughout the entire circumference of the cuff.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: March 12, 2013
    Assignee: Medtronic, Inc.
    Inventors: Warren P. Williamson, Paul A. Spence, George T. Christakis, Mark Ortiz