Patents by Inventor Mikhail Spassky

Mikhail Spassky 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).

  • Eccentric drive shaft for atherectomy device and method for manufacture
    Patent number: 6638288
    Abstract: A method of manufacturing a rotational atherectomy drive shaft having an asymmetrical tissue removal section. One or more strands of wire are helically wound about an elongated mandrel having an enlarged diameter section with a predetermined shape, thereby forming an elongated, flexible drive shaft which has an enlarged diameter tissue removal section. A portion of the drive shaft, including the enlarged diameter tissue removal section, is placed into a first clamp and given a first heat treatment to give the wire turns of the enlarged diameter tissue removal section an initial set, thereby preserving the initial shape of the enlarged diameter tissue removal section of the drive shaft. The drive shaft is then removed from the first clamp and the mandrel is dissolved. The enlarged diameter section of the drive shaft is then deformed to an asymmetrical shape by placing a portion of the drive shaft, including the enlarged diameter tissue removal section, into a second clamp.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: October 28, 2003
    Assignee: Shturman Cardiology Systems, Inc.
    Inventors: Leonid Shturman, Andrei Nevzorov, Mikhail Spassky
  • Eccentric drive shaft for atherectomy device and method for manufacture
    Patent number: 6132444
    Abstract: A method of manufacturing a rotational atherectomy drive shaft having an asymmetrical tissue removal section. One or more strands of wire are helically wound about an elongated mandrel having an enlarged diameter section with a predetermined shape, thereby forming an elongated, flexible drive shaft which has an enlarged diameter tissue removal section. A portion of the drive shaft, including the enlarged diameter tissue removal section, is placed into a first clamp and given a first heat treatment to give the wire turns of the enlarged diameter tissue removal section an initial set, thereby preserving the initial shape of the enlarged diameter tissue removal section of the drive shaft. The drive shaft is then removed from the first clamp and the mandrel is dissolved. The enlarged diameter section of the drive shaft is then deformed to an asymmetrical shape by placing a portion of the drive shaft, including the enlarged diameter tissue removal section, into a second clamp.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: October 17, 2000
    Assignee: Shturman Cardiology Systems, Inc.
    Inventors: Leonid Shturman, Andrei Nevzorov, Mikhail Spassky