Patents by Inventor Warren P. Williamson

Warren P. Williamson 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: 20020161285
    Abstract: Mechanical elements and/or adhesive is used in conjunction with or in place of suction to releasably attach elements of a system for manipulating a heart during cardiac surgery to the heart. The elements of the heart manipulation system are disclosed in the application Ser. No. 09/087,511 filed on May 29, 1998 and in the patent application Ser. No. 08/936,184 filed on Sept. 17, 1997. One form of the system can be used in minimally invasive surgery.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 31, 2002
    Inventors: Paul A. Spence, Warren P. Williamson
  • Publication number: 20020077631
    Abstract: Apparatus and methods for repairing damaged tendons or ligaments. Various repair apparatus include an elongate tensile member and a pair of anchor structures connected for movement along the tensile member on either side of a repair site, such as a tear or laceration. The anchor structures may take many forms, and may include barbed, helical, and crimp-type anchors. In the preferred embodiments, at least one anchor structure is movable along the elongate tensile member to assist with adjusting a tendon segment to an appropriate repair position and the anchor structure or structures are then lockable onto the elongate tensile member to assist with affixing the tendon at the repair position. The invention further provides tendon-to-bone repair apparatus and methods employing similar concepts. Tendon retrieval devices of the invention include helical members for rotating into a tendon end and subsequently moving the tendon to an appropriate operating position.
    Type: Application
    Filed: October 3, 2001
    Publication date: June 20, 2002
    Inventors: Lawrence M. Lubbers, Kenneth E. Hughes, Carl R. Coleman, Warren P. Williamson, Craig B. Berky, Matthew J. Huddleston, Thomas J. Ward, Mark A. Goldin, Jeremy Jarrett, Joseph E. Young
  • Patent number: 6406424
    Abstract: Devices and methods are disclosed for stabilizing tissue within a patient's body during a surgical operation to provide a relatively motionless surgical field, such as during a coronary artery bypass graft procedure. The devices include tissue stabilizers which engage and provide stabilization to a targeted area of tissue and further have the ability to engage and manipulate some portion of tissue within or adjacent the targeted area to improve the surgical presentation of that portion of tissue. The tissue stabilizer typically has one or more stabilizer feet which have a first foot portion configured to provide stabilization to the targeted tissue and a second foot portion moveable relative to the first foot portion for manipulating a portion of tissue to improve the surgical presentation.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: June 18, 2002
    Inventors: Warren P. Williamson, IV, Paul A. Spence, Mark Ortiz, George A. Keller, Harry Leonard Green, II
  • Patent number: 6402780
    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: May 6, 1999
    Date of Patent: June 11, 2002
    Assignee: CardioVascular Technologies, L.L.C.
    Inventors: Warren P. Williamson, IV, Paul A. Spence, George T. Chistakis, Mark Ortiz
  • Publication number: 20020068949
    Abstract: Wire fasteners having legs with lengths that can be one hundred times the width of the fastener are used to secure items, such as prosthesis valves to a patient during minimally invasive surgery. The fasteners are manipulated into position and then are immobilized by means of the legs thereof for tensioning, cutting and forming in situ. The fasteners are manipulated, tensioned and formed from the leg end of the fasteners. Tools for initially placing the fasteners and for immobilizing, tensioning, cutting and bending the fastener legs are disclosed. Once the fasteners are initially placed, the prosthesis is placed on the long legs of the placed fasteners and is guided into position on the legs. Once the prosthesis is in position, the legs of the fasteners are immobilized, tensioned, cut and bent into staple-like shapes to secure the prosthesis to the patient. A method for carrying out the procedure using the long fastener is also disclosed.
    Type: Application
    Filed: January 17, 2002
    Publication date: June 6, 2002
    Inventors: Warren P. Williamson, Paul A. Spence, George A. Keller, Cecil R. Robinson, Thomas J. Ward
  • Publication number: 20020065451
    Abstract: Mechanical elements and/or adhesive is used in conjunction with or in place of suction to releasably attach elements of a system for manipulating a heart during cardiac surgery to the heart. The elements of the heart manipulation system are disclosed in the application Ser. No. 09/087,511 filed on May 29, 1998 and in the patent application Ser. No. 08/936,184 filed on Sep. 17, 1997. One form of the system can be used in minimally invasive surgery.
    Type: Application
    Filed: December 28, 2001
    Publication date: May 30, 2002
    Inventors: Paul A. Spence, Warren P. Williamson
  • Publication number: 20020049369
    Abstract: A heart retractor links lifting of the heart and regional immobilization which stops one part of the heart from moving to allow expeditious suturing while permitting other parts of the heart to continue to function whereby coronary surgery can be performed on a beating heart while maintaining cardiac output unabated and uninterrupted. Circumflex coronary artery surgery can be performed using the heart retractor of the present invention. The retractor includes a plurality of flexible arms and a plurality of rigid arms as well as a surgery target immobilizing element. One form of the retractor can be used in minimally invasive surgery, while other forms of the retractor can accommodate variations in heart size and paracardial spacing.
    Type: Application
    Filed: December 20, 2001
    Publication date: April 25, 2002
    Inventors: Paul A. Spence, Warren P. Williamson
  • Patent number: 6338712
    Abstract: A system for manipulating a heart during cardiac surgery permits coronary surgery on a beating heart while maintaining cardiac output unabated and uninterrupted. Circumflex coronary artery surgery can be performed using the system. The system locates a suspension head near the apical region of the heart and a gross support near the base of the heart near the AV groove. A frame is positioned within the patient's thoracic region and moves with the patient, and a surgical target immobilizer can be used to assist in the movement of the heart if desired. A special suction cup is used which accommodates multiplanar movement of the heart and the myocardium while also preventing heart tissue from interrupting the suction being applied to the heart. One form of the system can be used in minimally invasive surgery.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: January 15, 2002
    Assignee: Origin Medsystems, Inc.
    Inventors: Paul A. Spence, Warren P. Williamson, IV, Mark Ortiz
  • Patent number: 6324404
    Abstract: A cellular telephone system has call management decisions made based on the exact geographic location of the mobile unit. These call management decisions include billing and taxing decisions, cell site selection, frequency selection and even cellular system selection. The decisions are continuously updated during a call whereby decisions can be made and changed regardless of where a call originated. Cell site location, and even cellular system selection, can be made in a specific manner to best serve the needs of the mobile user, the cellular system as well as the public. It is even possible for a cellular system to locate one or more of its cell sites in the geographic area served by another cellular system. In some cases, cellular systems might even share cell sites.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: November 27, 2001
    Assignee: Sycord Limited Partnership
    Inventors: Everett Dennison, Timothy J. Duffy, Gregory T Pauley, Scott L. Jones, Albert H. Pharis, Jr., Warren P. Williamson, IV
  • Publication number: 20010044656
    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: Application
    Filed: May 6, 1999
    Publication date: November 22, 2001
    Inventors: WARREN P. WILLIAMSON, PAUL A. SPENCE, GEORGE T. CHISTAKIS, MARK ORTIZ
  • Publication number: 20010041827
    Abstract: A system for manipulating a heart during cardiac surgery links lifting of the heart and regional immobilization which stops one part of the heart from moving to allow expeditious suturing while permitting other parts of the heart to continue to function whereby coronary surgery can be performed on a beating heart while maintaining cardiac output unabated and uninterrupted. Circumflex coronary artery surgery can be performed using the system for manipulating a heart during cardiac surgery of the present invention. The system is an improvement on the retractor disclosed in parent application Ser. No. 08/936,184 filed on Sep. 17, 1997 and locates a suspension head near the apical region of the heart and a gross support near the base of the heart near the AV groove. A frame is positioned within the patient's thoracic region and moves with the patient, and a surgical target immobilizer can be used to assist in the movement of the heart if desired.
    Type: Application
    Filed: May 29, 1998
    Publication date: November 15, 2001
    Applicant: Alan W. Cannon
    Inventors: PAUL A. SPENCE, WARREN P. WILLIAMSON, MARK ORTIZ
  • Publication number: 20010039424
    Abstract: An anastomosis is performed using a mounting structure mounted on the outside of at least one vessels The mounting structure includes a flexible mounting structure that is attached to the vessel by a special instrument. A graft vessel is attached to the mounting structure either directly or by means of another mounting structure attached to the graft vessel. Tools for attaching a mounting structure to a vessel are disclosed, and a tool for attaching two mounting structures together is also disclosed. Methods for carrying out the anastomosis according to the invention are also disclosed.
    Type: Application
    Filed: June 26, 2001
    Publication date: November 8, 2001
    Inventors: Paul A. Spence, Warren P. Williamson, George Christakis
  • Patent number: 6254617
    Abstract: An anastomosis is performed using a mounting structure mounted on the outside of at least one vessel. The mounting structure includes a flexible mounting structure that is attached to the vessel by a special instrument. A graft vessel is attached to the mounting structure either directly or by means of another mounting structure attached to the graft vessel. Tools for attaching a mounting structure to a vessel are disclosed, and a tool for attaching two mounting structures together is also disclosed. Methods for carrying out the anastomosis according to the invention are also disclosed.
    Type: Grant
    Filed: November 27, 1998
    Date of Patent: July 3, 2001
    Assignee: Origin Medsystems, Inc.
    Inventors: Paul A. Spence, Warren P. Williamson, IV, George Christakis
  • Patent number: 6241742
    Abstract: An anastomosis is performed using a mounting structure mounted on the outside of at least one vessel. The mounting structure includes a flexible mounting structure that is attached to the vessel by a special instrument. A graft vessel is attached to the mounting structure either directly or by means of another mounting structure attached to the graft vessel. Tools for attaching a mounting structure to a vessel are disclosed, and a tool for attaching two mounting structures together is also disclosed. Methods for carrying out the anastomosis according to the invention are also disclosed.
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: June 5, 2001
    Assignee: Origin Medsystems, Inc.
    Inventors: Paul A. Spence, Warren P. Williamson, IV, George Christakis
  • Patent number: 6190397
    Abstract: An anastomosis is performed using a mounting structure mounted on the outside of at least one vessels. The mounting structure includes a flexible mounting structure that is attached to the vessel by a special instrument. A graft vessel is attached to the mounting structure either directly or by means of another mounting structure attached to the graft vessel. Tools for attaching a mounting structure to a vessel are disclosed, and a tool for attaching two mounting structures together is also disclosed. Methods for carrying out the anastomosis according to the invention are also disclosed.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: February 20, 2001
    Assignee: Origin Medsystems, Inc.
    Inventors: Paul A. Spence, Warren P. Williamson, IV, George Christakis
  • Patent number: 6162233
    Abstract: Wire fasteners having legs with lengths that can be one hundred times the width of the fastener are used to secure items, such as prosthesis valves to a patient during minimally invasive surgery. The fasteners are manipulated into position and then are immobilized by the legs thereof for tensioning, cutting and forming in situ. The fasteners are manipulated, tensioned and formed from the leg end of the fasteners. Tools for initially placing the fasteners and for immobilizing, tensioning, cutting and bending the fastener legs are disclosed. Once the fasteners are initially placed, the prosthesis is placed on the long legs of the placed fasteners and is guided into position on the legs. Once the prosthesis is in position, the legs of the fasteners are immobilized, tensioned, cut and bent into staple-like shapes to secure the prosthesis to the patient. A method for carrying out the procedure using the long fastener is also disclosed.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: December 19, 2000
    Assignee: CardioVascular Technologies, LLC
    Inventors: Warren P. Williamson, IV, Paul A. Spence, George A. Keller, Cecil R. Robinson, Thomas J. Ward
  • Patent number: 6152936
    Abstract: A surgical loop delivery device is disclosed in parent disclosures Ser. No. 09/071,811 and U.S. Pat. No. 5,766,217. This device is improved to permit tissue targets larger than the device to be ligated while also maintaining a clear sight path between the surgeon and the target. The surgical loop is also stable during the procedure.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: November 28, 2000
    Assignee: ESD Medical, LLC
    Inventors: William J. Christy, James R. Christy, Warren P. Williamson IV, Craig Berky
  • Patent number: 6080173
    Abstract: A surgical punch prevents tissue debris associated with punching a hole in a patient's tissue, such as an aorta during an anastomosis procedure, from reentering the patient's bloodstream. The punch includes elements that move the debris away from the cutting site and then capture that debris inside the instrument. The punch also includes means for aligning the punch with the selected site and for atraumatically holding the tissue prior to cutting. Various means for moving the tissue debris and for trapping the tissue debris in the instrument are also disclosed.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: June 27, 2000
    Assignee: IDx Medical Ltd.
    Inventors: Warren P. Williamson, IV, Craig B. Berky, Paul A. Spence, Mark Ortiz
  • Patent number: H2037
    Abstract: An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedance, thickness and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between one pole of a bipolar energy source located on one interfacing surface, and a second interfacing surface applying pressure in a predetermined range wherein one of the interfacing surfaces is positioned on an anvil with a specified preload and spring rate. A second pole is located one of the two interfacing surfaces. In a preferred embodiment, the second pole is located on the same interfacing surface as the first pole and an insulator electrically isolates the two poles. A preferred application of the invention is in a cutting instrument wherein a hemostatic line is formed along a cut line using RF energy.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: July 2, 2002
    Inventors: David C. Yates, James W. Voegele, Jesse Kuhns, Anil Nalagatla, Warren P. Williamson, IV, Darrel M. Powell
  • Patent number: H1904
    Abstract: An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedance, thickness and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between one pole of a bipolar energy source located on one interfacing surface, and a second interfacing surface applying pressure in a predetermined range. A second pole is located one of the two interfacing surfaces. In a preferred embodiment, the second pole is located on the same interfacing surface as the first pole and an insulator electrically isolates the two poles. A preferred application of the invention is in a cutting instrument wherein a hemostatic line is formed along a cut line using RF energy.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: October 3, 2000
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: David C. Yates, James W. Voegele, Jesse Kuhns, Anil Nalagatla, Warren P. Williamson, IV