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ULTRASONIC ENDOSCOPIC PROBE
专利权人:
发明人:
Eri FUKUSHIMA,Hiroshi YAMAZAKI,Takafumi ASADA
申请号:
US14473924
公开号:
US20150065884A1
申请日:
2014.08.29
申请国别(地区):
US
年份:
2015
代理人:
摘要:
Provided is an ultrasonic endoscopic probe capable of obtaining an ultrasonic observation image having high spatial resolution. A part of a substantially tubular catheter is sealed with seal plates to provide a cavity housing: a motor including a motor casing, a rotor magnet, a bearing, and a rotating shaft an ultrasonic transducer mounted to the rotating shaft and a signal transmission means. The bearing includes an inner peripheral surface provided with a plurality of dynamic pressure generating grooves. An acoustic coupling fluid is sealed in the cavity and is allowed to penetrate a gap between the bearing and the rotating shaft at all times. When the ultrasonic transducer and the motor are rotated in the acoustic coupling fluid, the acoustic coupling fluid is suctioned in a preferable manner into the bearing gap having the dynamic pressure generating grooves for lubrication. Thus, a lack of an oil film on the bearing can be prevented, allowing for high accuracy rotation. Operational failure due to the development of foam in the acoustic coupling fluid can be prevented, enabling the acquisition of a high resolution ultrasonic observation image.
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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