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OPENING AND CLOSING DEVICE AND BREATHING ASSISTANCE DEVICE
专利权人:
发明人:
申请号:
EP14851791.5
公开号:
EP3042683B1
申请日:
2014.09.17
申请国别(地区):
EP
年份:
2017
代理人:
摘要:
An opening and closing device includes a mask 13 having an inner surface 13f in which an expiratory hole 13a is opened, and an opening and closing mechanism 15 for opening and closing the expiratory hole 13a. The expiratory valve 15 is movable along the inner surface 13f between a first position and a second position each having a different aperture area of the flow hole 13a. When a direction perpendicular to a moving direction of the expiratory valve 15 is defined as a width direction W, an aperture length L W of the flow hole 13a in the width direction W increases or decreases from the first position toward the second position.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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