Pharyngeal airway
US5743258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1996 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Jan 26, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/912
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pharyngeal airway tube, without inserting any foreign matters in the trachea (T), can be easily inserted through the oral cavity (O) in the lower pharynx (P), and is capable of hermetically sealing a transitional region from the lower pharynx to the esophagus (E) and the periphery of the laryngeal opening (AL) to secure an airway for positive pressure artificial ventilation. The pharyngeal airway comprises an airway tube (1) having a closed, round distal end and provided in its side wall with ventilating holes (2), and a balloon (3) attached to the edge of the ventilating part and around the ventilating part of the airway tube and capable of being inflated so as to surround a part of the airway tube near the distal end of the same. A small bore gas passage (4) is formed in the wall of the airway tube so as to open into the balloon, and a small bore tube (5) fitted with a connector (7) is connected to the proximal end of the gas passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.