Patents by Inventor Douglas A. LaPorte

Douglas A. LaPorte 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).

  • Ultrasonic imaging catheter assembly and method for identification of the same
    Patent number: 5209235
    Abstract: An improved ultrasonic imaging catheter assembly (4) includes an elongate tubular assembly (8) having an imaging assembly (12) at one end (14) and one or more connectors (16) at the other end (17). The catheter assembly includes a digital identification circuit (26), used to permit the automatic identification of the catheter assembly, having a common ID terminal (32) and at least first (34) and second (36) signal terminals. The common ID terminal is connected to each of the first and second signal terminals in one of four different ways: a short circuit, an open circuit, by a diode (80a) with the cathode of the diode towards the common ID terminal, and by a diode (80b) with the cathode of the diode towards the signal terminal.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: May 11, 1993
    Assignee: Cardiovascular Imaging Systems, Inc.
    Inventors: Axel F. Brisken, Douglas A. LaPorte, Aage Gronningsaeter, Michael D. Rold