发明授权
- 专利标题: Ultrasonic probe for use in ultrasonic endoscope
- 专利标题(中): 超声波探头用于超声波内窥镜
-
申请号: US350458申请日: 1989-05-11
-
公开(公告)号: US4974590A公开(公告)日: 1990-12-04
- 发明人: Yoshitake Saito
- 申请人: Yoshitake Saito
- 申请人地址: JPX Tokyo
- 专利权人: Olympus Optical Co., Ltd.
- 当前专利权人: Olympus Optical Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX63-119315 19880518
- 主分类号: A61B8/00
- IPC分类号: A61B8/00 ; A61B8/12 ; G01N29/04 ; G01N29/24 ; G10K11/00 ; H04R17/00
摘要:
An ultrasonic probe for use in the ultrasonic endoscope including a damping layer arranged on a rear surface of an ultrasonic vibrating element for absorbing an undesired ultrasonic wave emitted from the rear surface of the vibrating element, an insulating layer and a conductive housing. A matching coil for improving the efficiency of the vibration of the ultrasonic vibrating element is formed as an air-core type and is embedded within the damping layer or the insulating layer such that the undesired ultrasonic wave is passed through a hollow central space of the air-core type matching coil and is effectively absorbed by the damping layer, so that the damping function of the damping layer is not affected by the matching coil.
公开/授权文献
- US5499584A Retractable adjustable shelf apparatus 公开/授权日:1996-03-19