Pneumatic pressure probe
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United States of America Patent
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-
Nov 28, 1989
Grant Date -
N/A
app pub date -
Nov 5, 1987
filing date -
Nov 5, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pneumatic pressure probe is disclosed which provides rapid and accurate measurement of fluid pressure in an organ across a membrane but without pressurizing the organ itself. The pneumatic pressure probe includes a sensor head movably mounted by means of a hollow shaft to a handle that defines a pressure chamber. The sensor head defines a venting chamber within which is situated a thrust nozzle that communicates with the pressure chamber through the hollow shaft. Gas discharging from the thrust nozzle pressurizes the venting chamber and applies minimal force to an area of the epithelium across which the fluid pressure is determined. The pressure in the venting chamber is transmitted to the pressure chamber through the thrust nozzle and is monitored by means of a pressure transducer.
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