System and method for flow triggering of breath supported ventilation
US5390666A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1993 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | Dec 3, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2016/0042
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The method for flow triggering breath supported ventilation is accomplished by providing a system comprising a source of a predetermined, preinspiratory, constant flow of breathing gas and connecting such to a patient breathing attachment. One or more flow sensors measure the gas flow rate in a flow path communicating with the patient breathing attachment, determining when inhalation from the flow path has occurred. Breath support is generated in the delivered gas flow in response to inhalation by the patient, and the predetermined, preinspiratory, continuous flow of breathing gas is reestablished prior to the patient's next inspiratory effort. In combination with various types of breath support, the flow triggering strategy of the invention offers significant improvements in providing breath support to patients having weakened respiratory capabilities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.