Fluid mixing apparatus such as a ventilator
US11207486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2021 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | May 18, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/63
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus such as a fluid mixer, suitable for use with a respirator, including a venturi nozzle for flow of a pressure-controlled fluid; an ambient fluid aperture in fluid communication with the venturi nozzle; a fluid port; a pressure force multiplier in fluid communication with the fluid port; and a valve moveable relative to the venturi nozzle between a start flow position and a stop flow position; where the pressure force multiplier is configured such that fluid forced into the fluid port actuates the valve relative to the venturi nozzle; and where the pressure force multiplier is configured such that fluid withdrawn from the fluid port actuates the valve relative to the venturi nozzle. A method of using an apparatus suitable for a ventilator is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.