Apparatus and method for measuring the amount of fluid contained in an implantable medical device
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United States of America Patent
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Nov 13, 2001
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N/A
app pub date -
Sep 13, 1999
filing date -
Sep 13, 1999
priority date (Note) -
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Abstract
An implantable pump apparatus and method of operating the implantable pump for infusing a fluid into a body are described. The implantable pump apparatus includes a support member. A pressure sensitive resistor member is disposed on a first side of the support member. A spring member includes a first end which is adjacent to the pressure sensitive resistor member. An expandable fluid reservoir member includes a first end which is adjacent to a second end of the spring member. The level of fluid within the expandable fluid reservoir member is determined by measuring a force applied to the pressure sensitive resistor member.
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