Servo ventilation using negative pressure support
US9463293B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2010 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Jul 9, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/502
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for delivering a flow of breathing gas to a patient's airway that includes a gas flow generator and a patient circuit for communicating the flow of gas to the patient's airway. A sensor measures a characteristic associated with the flow of gas, such as flow rate, maximum average inspiratory flow, tidal volume or minute ventilation. A controller determines a first characteristic based on the measured characteristic and provides positive pressure support to the patient if the first characteristic is below a first target and provides a negative support if the first characteristic is above a second target. When the positive pressure support is provided, the pressure provided during inspiration is higher than the pressure provided during expiration. When the negative pressure support is provided, the pressure provided during inspiration is lower than the pressure provided during expiration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.