04026276 is referenced by 136 patents and cites 6 patents.

Pressure monitoring apparatus implantable in the cranium to measure intracranial pressure, the apparatus comprises a passive resonant circuit having a natural frequency influenced by ambient pressure. The resonant circuit has inductance and capacitance capability for comparing the local environmental pressure to that of a volume of gas trapped inside the apparatus, the environmental pressure being measured by observation of the frequency at which energy is absorbed from an imposed magnetic field located externally of the cranium.

Title
Intracranial pressure monitor
Application Number
5/673970
Publication Number
4026276
Application Date
April 5, 1976
Publication Date
May 31, 1977
Inventor
John G Chubbuck
Silver Spring
MD, US
Agent
Kenneth E Darnell
Robert E Archibald
Assignee
The Johns Hopkins University
MD, US
IPC
A61B 5/02
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