Ultrasonic transducer and method of manufacturing same Patent #: 4704774
ApplicationNo. 340383 filed on 04/18/1989
US Classes:29/25.35, PIEZOELECTRIC DEVICE MAKING600/462Probe placed in vascular system or body orifice
ExaminersPrimary: Jaworski, Francis J.
Attorney, Agent or Firm
International ClassA61B 008/12
AbstractA miniature transducer designed for use in a medical imaging system catheter probe is disclosed. The transducer has an electric cavity and coaxial construction for preventing electric fields from being emitted or received by the transducers. The construction of the transducer enables two to be mounted very close to one another on a thin catheter probe, one for transmitting acoustic pulses and the other for sensing echoes in response to the acoustic pulses, for imaging extremely close targets. The transducers can be secured to the catheter probe in such a way as to substantially acoustically isolate one from the other.A method of making the transducer by applying several electrically-conductive and insulating coatings and layers to a core in selected sequence so as to create a transducer having an electrical cavity, coaxial construction.
Field of SearchPIEZOELECTRIC DEVICE MAKING