Apparatus with a catheter for examining hollow organs or bodies with the ultrasonic waves
Doppler flow meter
Ultrasound tissue probe localization system
Passive ultrasound needle probe locator
Catheter for removing arteriosclerotic plaque Patent #: 4576177
ApplicationNo. 06/697056 filed on 01/31/1985
US Classes:600/463, With acoustical or display imaging600/467Intravascular
ExaminersPrimary: Cohen, Lee S.
Assistant: Jaworski, Francis J.
Attorney, Agent or Firm
International ClassesA61B 8/08 (20060101)
A61L 29/00 (20060101)
A61M 25/01 (20060101)
A61L 29/14 (20060101)
A61B 19/00 (20060101)
Foreign Application Priority Data1984-07-24 YU
AbstractThe hollow cylindrical wall of the catheter is composed of flexible, electrically insulating, ultrasonically transparent material. Embedded therein are spaced tubular-shaped ultrasonic piezoelectric transducers which substantially surround the lumen. The transducers receive signals from the imaging transducer on the body surface and serve to establish catheter location within the body during a diagnostic procedure. Electrical connector leads from the transducers are embedded in the wall and connected to a signal processor which provides an output for incorporation into the display of an echocardiograph image display system.