Intracranial pressure monitor

Details Intracranial pressure monitor Intracranial pressure monitor

1976-04-05

1977-05-31

Pellegrino, Stephen C.

Surgery

Truss

Perineal

128 21R, 128 205E, 73398C, A61B 502

Patent

active

040262766

ABSTRACT:
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.

REFERENCES:
patent: 3504664 (1970-04-01), Haddad
patent: 3738356 (1973-06-01), Workman
patent: 3853117 (1974-12-01), Murr
patent: 3943915 (1976-03-01), Severson
patent: 3958558 (1976-05-01), Dunphy et al.
patent: 3977391 (1976-08-01), Fleischmann

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