Patents by Inventor An Nguyen-Dinh

An Nguyen-Dinh 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).

  • Publication number: 20030229287
    Abstract: An ultrasonic endoscopic probe tip device which provides signals to an imaging system for transesophageal diagnosis includes a removable housing adapted to be attached to the distal end of an endoscope. A rotatable, ball-bearing-mounted phased array transducer within the housing is rotatable around its acoustic propagation axis through multiple turns. The transducer is driven by an immersed micro-motorized drive. A torque limiting gearbox couples the drive to the transducer. A position encoder provides the imaging system with transducer position information over a 360° range. An automatic transducer position locking/unlocking system is used to lock the transducer in a selected rotational position.
    Type: Application
    Filed: June 11, 2002
    Publication date: December 11, 2003
    Inventors: Aime Flesch, An Nguyen-Dinh
  • Patent number: 6656124
    Abstract: Multilayer piezoelectric fabrication methods are used to produce nD (e.g., 1.5D and 2D) ultrasonic transducer arrays. One embodiment concerns a 1.5 linear transducer in which impedance compensation is provided between the elemental transducers forming the array by varying the number of layers in each row of transducers. In another embodiment, a 2D transducer array is provided wherein elemental transducers are produced by dicing a conventional multilayer actuator to form equal sized elements which are embedded in a polymer matrix.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: December 2, 2003
    Assignee: Vermon
    Inventors: Aimé Flesch, An Nguyen-Dinh
  • Patent number: 6645148
    Abstract: An ultrasonic probe is provided for use in medical diagnostic applications. The probe includes one or more ultrasonic transducers disposed in an external housing and a plurality of cables disposed in a common sheath. A pointing device, such as a trackball, rocking-key device or the like, is mounted on the probe housing for controlling a plurality of functions of a remote imaging system associated with the probe.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: November 11, 2003
    Assignee: Vermon
    Inventors: An Nguyen-Dinh, Aimé Flesch
  • Publication number: 20030073906
    Abstract: Multilayer piezoelectric fabrication methods are used to produce nD (e.g., 1.5D and 2D) ultrasonic transducer arrays. One embodiment concerns a 1.5 linear transducer in which impedance compensation is provided between the elemental transducers forming the array by varying the number of layers in each row of transducers. In another embodiment, a 2D transducer array is provided wherein elemental transducers are produced by dicing a conventional multilayer actuator to form equal sized elements which are embedded in a polymer matrix.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 17, 2003
    Inventors: Aime Flesch, An Nguyen-Dinh
  • Publication number: 20020138007
    Abstract: An ultrasonic probe is provided for use in medical diagnostic applications. The probe includes one or more ultrasonic transducers disposed in an external housing and a plurality of cables disposed in a common sheath. A pointing device, such as a trackball, rocking-key device or the like, is mounted on the probe housing for controlling a plurality of functions of a remote imaging system associated with the probe.
    Type: Application
    Filed: March 20, 2001
    Publication date: September 26, 2002
    Inventors: An Nguyen-Dinh, Aime Flesch