Pressure sensor
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United States of America Patent
Stats
-
Nov 4, 1980
Issued Date -
N/A
app pub date -
Aug 7, 1978
filing date -
Aug 7, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure sensor apparatus primarily for sensing pressure in a body cavity such as the cranium, bladder or vena cava of an animal or human comprising a housing having a bellows defining a chamber within the housing. Means is provided for communicating pressure from the body cavity to the chamber. A radioactive material is housed in the housing and at least partially surrounded by radiation shielding. The radiation shielding shields the radioactive material as a function of the pressure sensed by the flexible member and the radioactivity is sensed by a radiation detector.
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