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High resolution intravascular ultrasound transducer assembly having a flexible substrate

  • US 5,857,974 A
  • Filed: 01/08/1997
  • Issued: 01/12/1999
  • Est. Priority Date: 01/08/1997
  • Status: Expired due to Term
First Claim
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1. An ultrasound transducer assembly for facilitating providing images from within a cavity, the ultrasound transducer assembly comprising:

  • integrated circuitry;

    an ultrasound transducer array including a set of ultrasound transducer elements, each element comprising transducer material, and a first electrode formed on at least a first surface and a second surface of the transducer material and a second electrode formed on at least the second surface of the transducer material;

    a flexible circuit to which the ultrasound transducer array and the integrated circuitry are attached during fabrication of the ultrasound transducer assembly, the flexible circuit comprising;

    a flexible substrate, providing a re-shapable platform, to which the integrated circuitry and transducer elements are attached;

    transducer signal lines on an inner surface of the flexible substrate, the transducer signal lines facilitating an electrical signal path between the integrated circuitry and the set of transducer elements; and

    a ground line connection on the inner surface of the flexible substrate; and

    wherein a first contact surface on the first electrode and a second contact surface on the second electrode for each transducer element are arranged upon the second surface of the transducer material and upon substantially a same physical plane as the inner surface of the flexible substrate.

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