发明名称 |
Oxygen therapy apparatus |
摘要 |
An oxygen therapy apparatus for supply of oxygen to patients. The device comprises an inlet port (17) for receiving high pressure oxygen from a cylinder and an outlet port (1) for supplying oxygen to a patient, typically via a single tube cannula (not shown). Three valves control the supply of oxygen to the patient: a diaphragm valve (42) senses the pressure at the outlet (1) and, in particular senses whether the patient is inhaling or exhaling. A valve (36) controls the supply of oxygen to the patient via an inlet jet (25) which is selectably closed by a piston (20) incorporating a flexible seat (24). Movement of the piston (20) is in turn controlled by a pilot valve (37) in dependence on the state of the diaphragm valve (42). The device gives a pulsed output to the patient during inhalation, but shuts off during exhalation to economise on the use of oxygen. |
申请公布号 |
US6568391(B1) |
申请公布日期 |
2003.05.27 |
申请号 |
US20000530283 |
申请日期 |
2000.06.28 |
申请人 |
PROTECTOR TECHNOLOGIES, B.V. |
发明人 |
TATAREK ANDREW RICHARD THOMAS;HARRIS JONATHAN MARK ST. JOHN |
分类号 |
A61M16/00;A61M16/06;A61M16/20;(IPC1-7):A61M16/00 |
主分类号 |
A61M16/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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