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CIRCUIT DE COMMANDE ACTIONNE PAR PRESSION D'AIR POUR DISPOSITIFS D'ASSISTANCE VENTRICULAIRE PNEUMATIQUES
专利权人:
VITALMEX INTERNACIONAL; S.A. DE C.V.
发明人:
申请号:
EP04733212.7
公开号:
EP1623730B1
申请日:
2004.05.14
申请国别(地区):
EP
年份:
2013
代理人:
摘要:
The invention relates to a driver for a pneumatic ventricular assistance device (VAD) which is actuated by pressurised air, oxygen or any other gas that is commonly available in hospital rooms, intensive care units and operating theatres. The inventive driver can supply both blood ejection pressure (systole) and blood filling vacuum pressure (diastole) to the VAD. According to the invention, the driver is controlled by a digital/computer controller by means of pressure and volume sensors and electromechanical valves. The ventricular pumping is performed by a single spring-driven bellows or piston. Moreover, the computer can actively regulate the maximum systolic ventricular pressure, the maximum diastolic pressure drop, the rhythm of the cycles and/or the ej ection volume (depending on the operating mode). The driver can also ventilate the drive conduit automatically and periodically in order to remove condensation and vitiated air therefrom. The device comprises no motor nor electrical pump and, as a result, is small, reliable, easy to manage and less expensive.
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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