Title:
OROPHARYNGEAL AIRWAY
Document Type and Number:
WIPO Patent Application WO/2020/029481
Kind Code:
A1
Abstract:
An oropharyngeal airway, comprising an upper curved surface part (11), an upper flat surface part (12) positioned on the outer side of the upper curved surface part (11), a lower curved surface part (21), and a lower flat surface part (22) positioned on the outer side of the lower curved surface part (21). Two first connecting walls (3), left and right, are arranged between the upper curved surface part (11) and the lower curved surface part (21). A center airway (4) and two side airways (5) are formed between the upper curved surface part (11), the lower curved surface part (21), and the two first connecting walls (3). The distance between the two first connecting walls (3) gradually decreases in the gas flow direction, such that the center airway (4) becomes increasingly narrower and the two side airways (5) become increasingly wider. The first connecting walls (3) are arranged so as to form a concave shape and made of a flexible, water-absorbent material. The pressure differentials between the left and right sides of each first wall resulting from Bernoulli's principle in fluid mechanics are used to cause the oropharyngeal airway to be able to, while also improving air flow, absorb secretions, reduce reflux aspiration, keep clear a field of vision for a cannula, reduce the time a patient is without oxygen during tracheal tube insertion, while also reducing adverse reactions caused by potential stimulation of the patient's oropharynx from necessary use of an external negative-pressure suction device to clear secretions.
Inventors:
HUANG CHANGSHENG (CN)
JIAO JINGJING (CN)
TANG SIYUAN (CN)
SHEN YU (CN)
GUO QULIAN (CN)
GONG NI (CN)
JIAO JINGJING (CN)
TANG SIYUAN (CN)
SHEN YU (CN)
GUO QULIAN (CN)
GONG NI (CN)
Application Number:
PCT/CN2018/118207
Publication Date:
February 13, 2020
Filing Date:
November 29, 2018
Export Citation:
Assignee:
UNIV CENTRAL SOUTH (CN)
XIANGYA HOSPITAL OF CENTRAL SOUTH UNIV (CN)
XIANGYA HOSPITAL OF CENTRAL SOUTH UNIV (CN)
International Classes:
A61M16/00
Domestic Patent References:
| WO2016023747A1 | 2016-02-18 |
Foreign References:
| CN108888845A | 2018-11-27 | |||
| CN107349502A | 2017-11-17 | |||
| CN201067567Y | 2008-06-04 | |||
| US20020170556A1 | 2002-11-21 | |||
| CN102908709A | 2013-02-06 | |||
| CN203647319U | 2014-06-18 | |||
| CN204484995U | 2015-07-22 |
Attorney, Agent or Firm:
CHANGSHA RONG ZHI PATENT AGENCY (CN)
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