Interstitial filtration and collection device and method for long-term monitoring of physiological constituents of the body
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United States of America Patent
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-
Mar 26, 1991
Issued Date -
N/A
app pub date -
Jun 2, 1989
filing date -
Feb 25, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An implantable filtration and collection device for collecting a filtrate containing a physiological constituent of the body present in an interstitial body space. The device is operable with a negative pressure generating source to withdraw the filtrate from the interstitial body space. The device includes a porous filter made of a material compatible for long-term patency inside the body and adapted to be implanted inside the body in fluid communication with the interstitial space. The pores in the filter are sized not to exceed a predetermined dimension corresponding to the size of the physiological constituent being filtered. A collector in the form of an elongate tube is connected to the filter and and serves to communicate the filtrate externally of the body where it may be withdrawn from the collector by a negative pressure generating source.
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