Device for intratracheal ventilation and intratracheal pulmonary ventilation
US5255675A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/32
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for intratracheal ventilation (ITV) and intratracheal pulmonary ventilation (ITPV) in which a catheter positioned in a patient's trachea at the carina supplies a constant supply of fresh oxygen containing gas to flush anatomical dead space. By positioning the catheter in the patient's trachea, the dead space of the trachea is bypassed and the trachea is only utilized for expiration. By providing a timed expiratory valve in the ITPV mode, lower pressures and fresh oxygen flow rates may be utilized with respiratory rates from 10 to 120 breaths per minute or higher. The catheter has a diffuser tip, and the patient is ventilated at a flow rate between 0.54 to 4 times the anatomical dead space per breath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.