Patents by Inventor Avram S. Lazaretnik

Avram S. Lazaretnik 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).

  • Method of removing concretions from the ureter
    Patent number: 4192294
    Abstract: A method is provided of removing urinary concretions from the ureter of patients whose anatomical peculiarties do not permit application of disintegrating instruments. The method involves an ultrasonic vibratory action upon the ureteral wall below the region where the concretion is lodged to stimulate peristaltic contractions of the urinary tract and free passage of the concretion. The local vibratory action upon the ureter involves no unfavorable effects upon the internal organs, cardiovascular or nervous systems of the patient.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: March 11, 1980
    Inventors: Petr N. Vasilevsky, Boris S. Gekhman, Ivan V. Parfinenko, Alfred M. Podgursky, Avram S. Lazaretnik