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Ultrasound transducer array probe for intraluminal imaging catheter

  • US 5,947,905 A
  • Filed: 10/15/1997
  • Issued: 09/07/1999
  • Est. Priority Date: 10/15/1997
  • Status: Expired due to Fees
First Claim
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1. An ultrasound transducer array probe for an imaging catheter, the probe being generally cylindrical and defining an interior direction towards an axis and an exterior direction away from the axis, the probe comprising:

  • a flexible circuit substrate having connecting means to physically and electrically receive a plurality of coaxial cables including at least some power supply cables, the flexible circuit substrate supporting two metal layers, each of the metal layers having traces thereon;

    a plurality of micro-capacitor structures in electrical communication with at least some of the coaxial cables that are power supply cables;

    a plurality of multiplexer/pre-amplifier integrated circuits in electrical communication with the micro-capacitor structures;

    a piezoelectric layer comprising a plurality of ultrasound array elements in electrical communication with the integrated circuits, the electrical communication being through at least some of the traces on the metal layers; and

    an acoustic backing layer acoustically engaged with the piezoelectric elements, the acoustic backing layer being interior with respect to the piezoelectric elements.

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