Apparatus for simultaneous determination of ophthalmic artery blood pressure and flow
US4907595A · kind A · utility
Inventor
Key dates
| Filing date | Sep 10, 1987 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Sep 10, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02216
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The apparatus comprises a chamber (1) enclosed on all sides except for an opening (3) on one side to permit hermetical contact with the orbital borders. The chamber is equipped with a device (4) for increasing the pressure within the chamber, coupled to a manometer (6) and has a doppler probe (5) that may be connected to a doppler flowmeter. Applying an increasing positive pressure in the chamber, and thus upon the contents of the orbit, the doppler probe detects the moment of disappearance and reappearance of the blood flow signal, respectively. The point at which the signal ceases or first reappears corresponds to the systolic blood pressure in the ophthalmic artery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.