Manometer for infusion apparatus
US4282881A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1979 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | May 10, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3348
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A manometer for measuring the hydrodynamic pressure of fluids parenterally administered to a patient. The manometer includes a transparent housing which has a passageway formed in the housing that accommodates continuous flow of fluid therethrough. A pressure measuring chamber is formed in the housing and one end of the pressure measuring chamber is in fluid communication with the passageway. The other end of the pressure measuring chamber communicates with an enclosed air space. The fluid flowing through the passageway enters the pressure measuring chamber and rises to a level which is dependent upon the pressure of the fluid flowing through the passageway. Markings are provided on the housing of the manometer which permit the pressure exerted on the fluid flowing through the passageway to be read directly from the level of the fluid in the pressure measuring chamber. In one embodiment of the manometer, the enclosed air space may be adjusted so that the manometer may be normalized for use at any one of several different altitudes. A valve is provided so that the enclosed air space may be vented to the ambient atmosphere when it is desired to set the pressure reading to zero. In an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.