Surgery – Diagnostic testing – Measuring fluid pressure in body
Patent
1997-05-06
1999-07-06
Lateef, Marvin M.
Surgery
Diagnostic testing
Measuring fluid pressure in body
600587, A61B 500
Patent
active
059191449
ABSTRACT:
A non-invasive apparatus and method are disclosed for measuring intracranial pressure. The intracranial measurement system transmits acoustic signals through a cranium and provides an indication of intracranial pressure based on the received acoustic signals after interaction with the brain. Properties such as acoustic transmission impedance, resonant frequency, resonance characteristics, velocity of sound and the like may be measured and correlated with intracranial pressure. The acoustic signals have typical frequencies of less than 100 kHz, for example, in the audible and sub-audible frequency ranges. The intensity of the transmitted acoustic signals used to determine intracranial pressure is relatively low, resulting in little or no health risks during short term or long term monitoring.
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Bridger Keith
Cooke Arthur V.
Crowne Frank J.
Kuhn Philip M.
Lutian Joseph J.
Active Signal Technologies, Inc.
Imam Ali M.
Lateef Marvin M.
Towner Alan G.
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