Patent ID: 6152885
Filing Date: 2000-11-28
Classification: A61B

Abstract:
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; anda 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.