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Barometric pressure sensor for use with implantable absolute pressure sensor

  • US 6,152,885 A
  • Filed: 04/30/1998
  • Issued: 11/28/2000
  • Est. Priority Date: 04/30/1998
  • Status: Expired due to Fees
First Claim
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1. A system for measuring barometric pressure for use in generating reference pressure values in conjunction with measurement of absolute pressure values within a patient'"'"'s body comprising:

  • a barometric pressure sensing module adapted to be located with the patient'"'"'s body having a module housing enclosing an air chamber, wherein the module housing is adapted to be implanted in the patient'"'"'s skin and subcutaneous tissue layer;

    a percutaneous access device coupled to the barometric pressure sensing module to expose the air chamber to the atmosphere outside the patient'"'"'s body;

    a barometric pressure sensor within the air chamber for generating reference pressure values representing the ambient air pressure in the air chamber; and

    a protective vent cover extending over the air vent formed of a material capable of air passage and capable of inhibiting passage of moisture, liquids, and particulate contaminants through the air vent and into the air chamber.

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