Patents by Inventor Semen G. Khurtsilava

Semen G. Khurtsilava 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).

  • Heart valve prosthesis
    Patent number: 4713071
    Abstract: A heart valve prosthesis comprises a valve ring having an opening for the flow of blood, a valve poppet floatingly mounted during opening and closing. For floatingly containing the poppet, and there is provided a single upper support and a lower support structure. The upper support has a flat portion supporting the poppet that bears thereagainst with a depression made in the top side of the poppet. The lower support structure has tabs for supporting the poppet so that the poppet is in the surface-to-the surface contact with the upper support and tabs of the lower support structure when the poppet is in the open position.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: December 15, 1987
    Inventors: Naum A. Iofis, Rudolf N. Vettsel, Alexandr S. Bukatov, Semen G. Khurtsilava
  • Cardiac valve prosthesis
    Patent number: 4576605
    Abstract: A cardiac valve prosthesis including an annular body having a valving member and a suturing collar. The collar has a V-shaped groove in which is mounted a movable disc segment intended for covering calcinosis. There is provided a cord for retaining the disc segment in a desired angular position relative to the suturing collar.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: March 18, 1986
    Assignee: Nauchno-Issledovatelsky Institut Khirurgii Imeni A.V. Vishnevskogo
    Inventors: Arnold N. Kaidash, Naum A. Iofis, Semen G. Khurtsilava, Alexandr S. Bukatov, Zinaida P. Danilova