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Arterial sensor

  • US 5,494,043 A
  • Filed: 05/04/1993
  • Issued: 02/27/1996
  • Est. Priority Date: 05/04/1993
  • Status: Expired due to Term
First Claim
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1. An arterial sensor for measuring the surface force/displacement resulting from a blood pressure wave traveling through an artery and transmitted through the arterial wall and overlying tissue, comprising:

  • a first piezoelectric sensor for generating a first signal;

    a second piezoelectric sensor for generating a second signal;

    a support for independently supporting said first piezoelectric sensor and said second piezoelectric sensor; and

    means for differentially combining said first signal and said second signal;

    wherein said first piezoelectric sensor comprises a common piezoelectric strip having a common electrical contact and a first piezoelectric strip having a first electrical contact, and said second piezoelectric sensor comprises a second piezoelectric strip having a second electrical contact;

    wherein said first piezoelectric strip has an area less than that of said common piezoelectric strip and said second piezoelectric strip has an area less than that of said common piezoelectric strip.

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