Patents by Inventor Ronald G. Williams
Ronald G. Williams 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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Patent number: 6156046Abstract: A system is provided having a catheter, a torque member extending longitudinally through a lumen of the catheter, a removal mechanism secured to a distal end of the torque member, and a guidewire having a guide section that extends through a lumen of the removal mechanism. The guide section defines a curved profile that is diametrically larger than the dimension of the removal mechanism. The guide section of the guidewire is adapted to be positioned inside a passageway of the occluding material, and provides a curved path along which the removal mechanism can be advanced inside the passageway of the occluding material to separate and remove occluding material.Type: GrantFiled: November 7, 1997Date of Patent: December 5, 2000Assignee: Prolifix Medical, Inc.Inventors: James D. Passafaro, Ronald G. Williams, David J. Kupiecki, Greg R. Patterson, Kathy M. Mah
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Patent number: 6039758Abstract: An apparatus and method for repairing a vessel at a bifurcation using a multicapsule catheter having first, second and third capsules for releasably retaining each terminal end of a bifurcated graft. The method for repairing the vessel includes the steps of performing a surgical technique to gain remote access to the vessel, advancing the multicapsule catheter within the vessel and releasing the bifurcated graft within the vessel to thereby repair the vessel.Type: GrantFiled: December 22, 1997Date of Patent: March 21, 2000Assignee: Endovascular Technologies, Inc.Inventors: Dinah B. Quiachon, Alec A. Piplani, Steve G. Baker, Ronald G. Williams, Richard S. Williams, Kenneth L. Osborn, Ted W. Layman, Peter K. Johansson
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Patent number: 5824044Abstract: An improved intraluminal grafting system incorporating novel structural features for enhancing the effective and efficient deployment of a bifurcated prosthesis having a plurality of attachment systems, in the vessel of an animal body, the system including a balloon catheter assembly, an ipsilateral capsule catheter assembly, distal and contralateral capsule assemblies and means interacting therewith, and a capsule jacket assembly. The capsule assemblies include an ipsilateral capsule assembly, a contralateral capsule assembly and a distal capsule assembly, wherein the attachment systems of the bifurcated prosthesis are disposed within the three capsule assemblies. The capsule jacket assembly includes a removable sheath that covers the bifurcated prosthesis and capsule assemblies to provide a smooth transition along the length of the deployment catheters.Type: GrantFiled: September 3, 1996Date of Patent: October 20, 1998Assignee: Endovascular Technologies, Inc.Inventors: Dinah B. Quiachon, Alec A. Piplani, Steve G. Baker, Ronald G. Williams, Richard S. Williams, Kenneth L. Osborn, Ted W. Layman, Peter K. Johansson
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Patent number: 5653697Abstract: A large-diameter expandable sheath for use in introducing a catheter or other medical instrument into a vessel in the body of a patient. The expandable sheath comprises an elongate sheath tube formed of a flexible material which has proximal and distal extremities and a passage extending therethrough of a maximum predetermined diameter. The distal extremity of the elongate sheath tube is folded longitudinally to a smaller folded diameter. The sheath tube may be self-expanding or may be reinforced with a self-expanding wire or expandable stents. A backflow adapter is secured to the proximal extremity of the elongate sheath tube. The backflow adapter has a central opening therein in registration with the passage in the sheath tube. A normally closed primary valve is disposed in the central opening of the backflow adapter and is movable to an open position.Type: GrantFiled: September 27, 1995Date of Patent: August 5, 1997Assignee: Endovascular Technologies, Inc.Inventors: Dinah B. Quiachon, Wesley D. Sterman, Ronald G. Williams, David C. Dillow, Steven G. Baker
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Patent number: 5604965Abstract: A casket includes a plurality of walls. An attaching device is connected to at least one of the walls for non-removably attaching decorative hardware to the exterior of the casket without accessing the interior of said casket. The decorative hardware includes a decorative body portion and an engaging device. The engaging device provides attachment of the decorative hardware to the attaching device without the use of tools.Type: GrantFiled: September 5, 1995Date of Patent: February 25, 1997Assignee: Astral Industries Inc.Inventors: Charles B. Shaw, David A. Hazelett, Ronald G. Williams, David D. Shook
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Patent number: 5562728Abstract: Endovascular grafting system having a capsule catheter comprising a flexible elongate tubular member having proximal and distal extremities and a capsule mounted on the distal extremity of the tubular member. The capsule is generally cylindrical in shape and is formed of a helical wrap of a metal ribbon. The wraps are bonded into a unitary capsule permitting bending of said unitary capsule. A graft is disposed within the capsule. The graft is comprised of a tubular member having proximal and distal ends. Hooks are secured to the proximal and distal ends of the tubular member and face in a direction outwardly towards the inner wall of the capsule. A push rod is disposed within the capsule catheter and engages the graft whereby upon relative movement between the push rod and the capsule catheter, the graft can be forced out of the capsule.Type: GrantFiled: April 12, 1995Date of Patent: October 8, 1996Inventors: Harrison M. Lazarus, Ronald G. Williams, Wesley D. Sterman, Alec A. Piplani
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Patent number: 5484418Abstract: A large-diameter expandable sheath for use in introducing a catheter or other medical instrument into a vessel in the body of a patient. The expandable sheath comprises an elongate sheath tube formed of a flexible material which has proximal and distal extremities and a passage extending therethrough of a maximum predetermined diameter. The distal extremity of the elongate sheath tube is folded longitudinally to a smaller folded diameter. The sheath tube may be self-expanding or may be reinforced with a self-expanding wire or expandable stents. A backflow adapter is secured to the proximal extremity of the elongate sheath tube. The backflow adapter has a central opening therein in registration with the passage in the sheath tube. A normally closed primary valve is disposed in the central opening of the backflow adapter and is movable to an open position.Type: GrantFiled: November 2, 1994Date of Patent: January 16, 1996Assignee: EndoVascular Technologies, Inc.Inventors: Dinah B. Quiachon, Wesley D. Sterman, Ronald G. Williams, David C. Dillow, Steven G. Baker
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Patent number: 5395349Abstract: A large-diameter expandable sheath for use in introducing a catheter or other medical instrument into a vessel in the body of a patient. The expandable sheath comprises an elongate sheath tube formed of a flexible material which has proximal and distal extremities and a passage extending therethrough of a maximum predetermined diameter. The distal extremity of the elongate sheath tube is folded longitudinally to a smaller folded diameter. The sheath tube may be self-expanding or may be reinforced with a self-expanding wire or expandable stents. A backflow adapter is secured to the proximal extremity of the elongate sheath tube. The backflow adapter has a central opening therein in registration with the passage in the sheath tube. A normally closed primary valve is disposed in the central opening of the backflow adapter and is movable to an open position.Type: GrantFiled: August 19, 1993Date of Patent: March 7, 1995Assignee: EndoVascular Technologies, Inc.Inventors: Dinah B. Quiachon, Wesley D. Sterman, Ronald G. Williams, David C. Dillow, Steven G. Baker
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Patent number: 5275622Abstract: Endovascular grafting system having a capsule catheter comprising a flexible elongate tubular member having proximal and distal extremities and a capsule mounted on the distal extremity of the tubular member. The capsule is generally cylindrical in shape and is formed of a helical wrap of a metal ribbon. The wraps are bonded into a unitary capsule permitting bending of said unitary capsule. A graft is disposed within the capsule. The graft is comprised of a tubular member having proximal and distal ends. Hooks are secured to the proximal and distal ends of the tubular member and face in a direction outwardly towards the inner wall of the capsule. A push rod is disposed within the capsule catheter and engages the graft whereby upon relative movement between the push rod and the capsule catheter, the graft can be forced out of the capsule.Type: GrantFiled: July 13, 1990Date of Patent: January 4, 1994Assignee: Harrison Medical Technologies, Inc.Inventors: Harrison M. Lazarus, Ronald G. Williams, Wesley D. Sterman
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Patent number: 5256150Abstract: A large-diameter expandable sheath for use in introducing a catheter into a vessel in the body of a patient comprising an elongate sheath tube formed of a flexible material which has proximal and distal extremities and a passage extending therethrough of a maximum predetermined diameter. The distal extremity of the elongate sheath tube is folded longitudinally to a smaller folded diameter. A backflow adapter is secured to the proximal extremity of the elongate sheath tube. The backflow adapter has a central opening therein in registration with the passage in the sheath tube. A valve is disposed in the central opening of the backflow adapter and is movable between open and closed positions. The valve when open permits the catheter to be inserted into the sheath, and when closed serves to form a hemostatic seal about the catheter.Type: GrantFiled: December 13, 1991Date of Patent: October 26, 1993Assignee: EndoVascular Technologies, Inc.Inventors: Dinah B. Quiachon, Wesley D. Sterman, Ronald G. Williams, David C. Dillow, Steven G. Baker
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Patent number: 5209731Abstract: Hand-held gun for inflating and deflating large volume balloons by the use of a syringe having a barrel and a syringe plunger having a head and slidably mounted in the barrel. The gun is provided with a handle adapted to be grasped by the hand. A housing is carried by the handle and is adapted to receive and retain the barrel of the syringe. A plunger rod is provided which has proximal and distal extremities and is slidably mounted in the handle for movement in a direction parallel to the movement of the syringe plunger between forward and rearward positions. A sleeve is secured to the proximal extremity of the plunger rod and extends coaxially for at least a portion of the plunger rod. A coil spring is mounted on the plunger rod for yieldably urging the plunger rod in a direction axially of the plunger rod toward the rearward position. A plate is secured to the sleeve and is adapted to be removably secured to the head of the syringe plunger.Type: GrantFiled: December 13, 1991Date of Patent: May 11, 1993Assignee: Endovascular Technologies, Inc.Inventors: Wesley D. Sterman, Ronald G. Williams, Alec A. Piplani
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Patent number: 5174295Abstract: System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially inform beam which encompasses the vessel. The transducer receives ultrasonic energy back scattered from the red blood cells and provides an electrical output signal. A first moment detector is provided which receives the electrical output from the transducer and provides a first moment signal. Normalization is provided to the output of the first moment detector to provide an electrical output representing a characteristic of the flow of the liquid in the vessel.Type: GrantFiled: September 13, 1991Date of Patent: December 29, 1992Assignee: Cardiometrics, Inc.Inventors: Jeffrey J. Christian, Paul D. Corl, Jerome Segal, Ronald G. Williams, Wayne C. Haase
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Patent number: 5163445Abstract: System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially uniform beam which encompasses the vessel. The transducer receives ultrasonic energy back scattered from the red blood cells and provides an electrical output signal. A first moment detector is provided which receives the electrical output from the transducer and provides a first moment signal. Normalization is provided to the output of the first moment detector to provide an electrical output representing a characteristic of the flow of the liquid in the vessel.Type: GrantFiled: September 13, 1991Date of Patent: November 17, 1992Assignee: Cardiometrics, Inc.Inventors: Jeffrey J. Christian, Paul D. Corl, Jerome Segal, Ronald G. Williams, Wayne C. Haase
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Patent number: 5105818Abstract: System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially uniform beam which encompasses the vessel. The transducer receives ultrasonic energy back scattered from the red blood cells and provides an electrical output signal. A first moment detector is provided which receives the electrical output from the transducer and provides a first moment signal. Normalization is provided to the output of the first moment detector to provide an electrical output representing a characteristic of the flow of the liquid in the vessel.Type: GrantFiled: September 22, 1989Date of Patent: April 21, 1992Assignee: Cardiometric, Inc.Inventors: Jeffrey J. Christian, Paul D. Corl, Jerome Segal, Ronald G. William, Wayne C. Hasse
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Patent number: 5078148Abstract: Apparatus for measuring volumetric flow of a liquid in a vessel having a wall and having an axis extending longitudinally of the vessel parallel to the vessel wall. A flexible catheter is adapted to be disposed in the vessel. First and second ultrasonic transducers are carried by the catheter on one side of the catheter and face the wall of the vessel so that the beams from the transducers each cross substantially the longitudinal axis of the vessel. The first transducer beam is inclined at an angle with respect to the longitudinal axis of the vessel. The second transducer beam is inclined in a direction which is generally perpendicular to the longitudinal axis of the vessel.Type: GrantFiled: April 12, 1990Date of Patent: January 7, 1992Assignee: Cardiometrics, Inc.Inventors: Menahem Nassi, Paul D. Corl, Ronald G. Williams, Mark W. Cowan, Jerome Segal
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Patent number: 4967753Abstract: System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially uniform beam which encompasses the vessel. The transducer receives ultrasonic energy back scattered from the red blood cells and provides an electrical output signal. A first moment detector is provided which receives the electrical output from the transducer and provides a first moment signal. Normalization is provided to the output of the first moment detector to provide an electrical output representing a characteristic of the flow of the liquid in the vessel.Type: GrantFiled: January 13, 1989Date of Patent: November 6, 1990Assignee: Cardiometrics, Inc.Inventors: Wayne C. Haase, Jerome Segal, Paul D. Corl, Jeffrey J. Christian, Ronald G. Williams
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Patent number: 4947852Abstract: Apparatus for measuring volumetric flow of a liquid in a vessel having a wall and having an axis extending longitudinally of the vessel parallel to the vessel wall. A flexible catheter is adapted to be disposed in the vessel. First and second ultrasonic transducers are carried by the catheter on one side of the catheter and face the wall of the vessel so that the beams from the transducers each cross substantially the longitudinal axis of the vessel. The first transducer beam is inclined at an angle with respect to the longitudinal axis of the vessel. The second transducer beam is inclined in a direction which is generally perpendicular to the longitudinal axis of the vessel.Type: GrantFiled: October 5, 1988Date of Patent: August 14, 1990Assignee: Cardiometrics, Inc.Inventors: Menahem Nassi, Paul D. Corl, Ronald G. Williams, Mark W. Cowan, Jerome Segal
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Patent number: 4538622Abstract: Guide wire comprising an elongate flexible cylindrical element formed of metallic material having high torsional capability and having a proximal portion ranging from 0.008 to 0.020 inches and a distal portion having a diameter of less than 0.007 inches. It also comprises a coil formed of metallic material and secured to the distal portion and an additional coil formed of a material which is different from the material of which the first named coil is formed and which is substantially radiopaque secured to the distal extremity of the first named coil. In addition, it comprises a tip having a rounded conformation secured to the distal extremity of the last named coil.Type: GrantFiled: November 10, 1983Date of Patent: September 3, 1985Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Wilfred J. Samson, Ronald G. Williams