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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0718946 (1976-08-30) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 83 인용 특허 : 1 |
The present invention provides improvements in a control valve adapted to be used by a tracheotomy patient or in a laryngeal prosthesis. In one form, the control valve has a housing provided with a control opening, and a flapper mounted within the housing and operable to move toward and away from th
A control valve for a tracheotomy patient provided with a tracheal fistula and adapted to require said patient to breathe normally through his mouth, but adapted to enable said patient to breathe heavily through said tracheal fistula, comprising: a housing defining a chamber therewithin, said housin
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