Method of CO2 measurement during non-invasive ventilation
US10869978B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2016 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Jun 26, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/432
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for measuring a patient's expired CO2 level in a non-invasive ventilator system while maintaining a positive inspiratory pressure. The method includes the steps of: receiving, by the non-invasive ventilator system, a signal comprising an instruction to obtain a CO2 measurement from a patient; lowering, by the non-invasive ventilator system in response to the signal, the expiratory positive airway pressure from a first, higher level to a second, lower level for a first time period comprising one or more breaths; obtaining, by a CO2 sensor, a CO2 measurement during the first time period; and returning, after the first time period, the expiratory positive airway pressure to the first, higher level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.