Miniaturized pressure sensor having means for protection of diaphragm
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 4, 1992
Grant Date -
N/A
app pub date -
Mar 28, 1990
filing date -
Jul 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A miniaturized transducer for in vivo measurements of physiological pressure has a transducer unit and an inner tube with a wall opening. A diaphragm covers the wall opening. Distinguishing for the invention is that the diaphragm is protected by an outer tube arranged outside the inner tube, and having a wall opening situated radially opposite the wall opening of the inner tube. An end closure closes off the distal end of the tube and a seal seals the outer tube against the inner tube. The lumen of the inner tube is in communication with the atmospheric pressure.
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