System and method for circuit compliance compensated volume control in a patient respiratory ventilator
US7886739B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2005 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Aug 13, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3344
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A circuit compliance compensated volume control system in a patient respiratory ventilation system and method, including: a circuit compliance estimator, to provide a relationship between a circuit volume and a differential pressure between a circuit pressure and a positive end-expiratory pressure (PEEP) of the respiratory circuit, a circuit volume estimator, operative to provide an estimated circuit volume based on the relationship between the circuit volume and the differential pressure, a patient volume observer, operative to provide an estimated patient volume by subtracting the estimated circuit volume from a measured machine delivered net volume, and a volume delivery controller, operative to update the machine delivered net volume based on the estimated patient volume and a set tidal volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.