Patents by Inventor Robert P. Leather

Robert P. Leather 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: 4493321
    Abstract: A blade is drawn by means of a rod attached centrally of its cutting edge so that a portion of the blade extends on either side of the rod. An elongate centering device precedes the blade and its protective encasement so as to ensure that the device will not engage side branches of the vein. A catheter follows the valve cutter so that fluid may be introduced into the vein to snap valves shut ahead of the cutting device. The assembly is drawn through a vein by a rod having sufficient torsional rigidity to permit controlled orientation of the blade for efficient engagement and cutting of valve leaflets.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: January 15, 1985
    Inventor: Robert P. Leather