Method and apparatus for conducting total liquid ventilation with control of residual volume and ventilation cycle profile
US7726311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2003 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Oct 13, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0476
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of applying total liquid ventilation to a patient according to a ventilation cycle including inspiration and expiration profiles, comprises supplying oxygenated liquid to the patient's lungs, withdrawing liquid from the patient's lungs, and controlling independently supply of oxygenated liquid to the patient's lungs and withdrawal of liquid from the patient's lungs. This supply and withdrawal independent control comprises producing a ventilation cycle having independently controlled inspiration and expiration profiles. To carry out the method, a total liquid ventilator system comprises an inspiration pump for supplying oxygenated liquid to the patient's lungs, and an expiration pump for withdrawing liquid from the patient's lungs. A ventilation cycle control comprises first and second pump controllers connected to the inspiration and expiration pumps, respectively, to produce a ventilation cycle having independently controlled inspiration and expiration profiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.