Yuri M. Shkarlet;Nader Nazarifar;Cornelis J. Drost;Shawn X. Gao
发明人:
Shawn X. Gao,Nader Nazarifar,Cornelis J. Drost,Yuri M. Shkarlet
申请号：
US11510903
公开号：
US08348879B2
申请日:
2006.08.28
申请国别(地区):
US
年份:
2013
代理人:
摘要：
A surgical cassette have a rigid fluid channel formed into a rigid plastic component or housing. The piezoelectric crystals of an ultrasonic flow meter are positioned on one side of the fluid channel. The side wall of the fluid channel opposite the piezoelectric crystals is exposed to fluid in the flow channel on its interior side and is exposed to ambient air on its exterior side. The interface between the wall and the air acts as an acoustic reflector for the operation of the ultrasonic flow meter.
