Method and apparatus for determining the absolute value of intracranial pressure
US8394025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2009 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Nov 6, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/4227
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for obtaining the absolute value of intracranial pressure in a non-invasive manner is described by using an ultrasonic Doppler measuring device which detects the intracranial and extracranial blood flow velocities of the intracranial and extracranial segments of the ophthalmic artery. The eye in which the blood flow is monitored is subjected to an external pressure, sufficient to equalize the intracranial and extracranial angle-independent blood flow factors calculated from the intracranial velocity signal and extracranial velocity signal. The absolute value of the intracranial pressure is identified as that external pressure at which such equalization occur
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.