Apparatus for recording intracranial pressure
US4971061A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 11, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | May 11, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/031
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for recording the intracranial pressure of a living body or patient utilizing ultrasonic waves includes a probe which is connected to a pulser to receive intracranial echoes that are multi-reflected being interfered with each other, a receiver for amplifying the received echoes, a gate circuit which applies a gate for a predetermined time duration of echo synchronous with the heart beat among the amplified echoes and which produces internal waves of gates, and a recorder for continuously recording peak values of the output waveforms. The intracranial pressure waveforms are continuously recorded, a change in thickness of the dura mater is found from the recorded intracranial pressure waveforms and a change of the intracranial pressure is found by utilizing a correlation between the intracranial pressure and the thickness of the dura mater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.