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Electrolytic pressure transduction system

  • US 4,561,450 A
  • Filed: 10/03/1984
  • Issued: 12/31/1985
  • Est. Priority Date: 10/03/1984
  • Status: Expired due to Fees
First Claim
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1. An apparatus for measuring physiological pressures comprising a flexible tube having an open end, a closed end, a hollow interior and an outer surface, an electrode within said tube near said closed tube end, another electrode within said tube spaced from said electrode toward said open tube end, a centrally disposed electrode within said tube generally intermediate of said electrode and said spaced electrode, a pair of series connected electrical resistors, said resistors being coupled to said electrode and said spaced electrode to form a Wheatstone bridge therewith, and a tube portion that is softer and more readily compressed than said flexible tube, said tube portion joining all of said electrodes to said flexible tube and forming a portion of said flexible tube.

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