Patents by Inventor Bruce E. Fettel

Bruce E. Fettel 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: 4343049
    Abstract: This invention relates to the electrochemical machining of integrally formed prosthetic heart valve structures in which both the structural integrity of the valve and the blood flow through the valve is improved as a result of the integral formation of the valve structure. In particular, such heart valves comprise a ring and a pendant structure, such as a strut, for supporting the opening and closing of a discoid valve occluder. Integral formation of the strut with the ring permits the cross-sectional shape of the strut to be machined without overheating and distortion to conform to a teardrop shape having favorable fluid-dynamic characteristics thereby improving the flow of blood through the valve across the strut. The integral formation of the strut with the ring further results in the elimination of the weld fillet between the strut and the ring, thereby permitting the height of the ring to be reduced, which further improves the fluid dynamic characteristics of the valve.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: August 10, 1982
    Assignee: Shiley, Inc.
    Inventors: Bruce E. Fettel, Paul E. Morris, Leo J. Lichte
  • Patent number: 4276132
    Abstract: This invention relates to the electrochemical machining of integrally formed prosthetic heart valve structures in which both the structural integrity of the valve and the blood flow through the valve is improved as a result of the integral formation of the valve structure. In particular, such heart valves comprise a ring and a pendant structure, such as a strut, for supporting the opening and closing of a discoid valve occluder. Integral formation of the strut with the ring permits the cross-sectional shape of the strut to be machined without overheating and distortion to conform to a teardrop shape having favorable fluid-dynamic characteristics thereby improving the flow of blood through the valve across the strut. The integral formation of the strut with the ring further results in the elimination of the weld fillet between the strut and the ring, thereby permitting the height of the ring to be reduced, which further improves the fluid dynamic characteristics of the valve.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: June 30, 1981
    Assignee: Shiley Incorporated
    Inventors: Bruce E. Fettel, Paul E. Morris, Leo J. Lichte
  • Patent number: 4084268
    Abstract: A tissue heart valve has a cloth-covered stent which provides several layers of padding over the stent edges and an integral sewing ring while maximizing the internal valve diameter for a given size heart annulus. No edges of the cloth are exposed. A continuation of the pledget covers all knots of the stitches connecting the tissue to the stent.
    Type: Grant
    Filed: April 22, 1976
    Date of Patent: April 18, 1978
    Assignee: Shiley Laboratories, Incorporated
    Inventors: Marian I. Ionescu, Bruce E. Fettel
  • Patent number: 4057857
    Abstract: A convexo-concave, saucer-like heart valve vane is floatingly supported in a valve ring between a vane closing support rod, which engages the edge of a concentric recess on the arcuate convex side of the vane, and a vane closing support rod which engages the arcuate concave side of the vane. In its open position, the limiting portion of the convex distal surface of the vane is nearly aligned with the blood stream to maximize the blood flow through the portion of the valve defined by said portion and the adjacent portion of the ring.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: November 15, 1977
    Assignee: Shiley Laboratories, Inc.
    Inventor: Bruce E. Fettel
  • Patent number: 3978863
    Abstract: A surgical catheter, exemplified in the preferred embodiment as an embolectomy catheter, which has an expandable tip, an X-ray opaque position indicator, and an expandable balloon to indicate when the expandable tip is inflated is disclosed.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: September 7, 1976
    Assignees: Bruce E. Fettel, Samuel Burd
    Inventors: Bruce E. Fettel, Samuel Burd