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SPRECHVENTIL
专利权人:
Andreas Fahl Medizintechnik-Vertrieb GmbH
发明人:
FAHL, Andreas
申请号:
EP13818661.4
公开号:
EP2934384B1
申请日:
2013.12.16
申请国别(地区):
EP
年份:
2017
代理人:
摘要:
The invention relates to a speaking valve for laryngectomized and tracheotomized persons that is easy and economical to produce. According to the invention, the speaking valve comprises a proximal first opening and a distal second opening, a filter, which is at least partially surrounded by the housing, which filter is made of an elastic material, and has a proximal first end and a distal second end, wherein the filter partially protrudes beyond an end face of the housing at the distal second opening, and wherein a cover is connected by means of at least one partial region of the bottom surface thereof to a top side of the filter at the distal second end of the filter. A diameter d1 of the cover is greater than a diameter d2 of the filter, such that an edge projecting beyond a lateral filter wall of the filter is formed, wherein by application of pressure to the cover from an initial position, a bottom surface of the edge at least partially interacts with the end face of the housing in order to produce a closed position of the speaking valve, and wherein the cover together with the filter returns to the initial position when unloaded.
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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