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1. 发明授权

US06361542B1 Obstetrical vacuum extractor cup with force measuring capabilities 失效
标题翻译：具有力测量功能的抽真空抽油杯
公开(公告)号：US06361542B1
公开(公告)日：2002-03-26
申请号：US09573092
申请日：2000-05-17
申请人： Dan G. Dimitriu , Merle M. Smith
发明人： Dan G. Dimitriu , Merle M. Smith
IPC分类号： A61B1742
CPC分类号： A61B17/442 , A61B2017/308
摘要： An optical strain gauge is coupled to an obstetrical vacuum extractor to measure the tensile strain resulting from the application of an extraction force. The measured strain is transmitted to a readout device and converted to a readable indication of the force applied. The optical strain gauge may be of any suitable design, so long as the measured reading may be transmitted and converted to a readable indication of the applied force either before or at the readout device. Preferably, the strain gauge is connected with an optical fiber to the readout device. The strain gauge may be coupled to or molded to any portion of the extractor that exhibits a tensile or compressive force or bending as a result of the application of the extraction force. In the currently preferred design wherein a stem with a handle is coupled to the cup, a sensor is disposed about the stem between a flange on the stem and the handle, which is moveable along the stem, such that the sensor measures the compressive force between the handle and the flange.
摘要翻译：将光学应变计耦合到产科真空抽吸器以测量由施加抽吸力引起的拉伸应变。测量的应变被传输到读出装置，并转换为所施加的力的可读指示。光应变计可以是任何合适的设计，只要测量的读数可以在读出装置之前或读出装置处被发送并转换成所施加的力的可读指示。优选地，应变仪与光纤连接到读出装置。应变计可以联接到或模制到提取器的任何部分，其由于施加提取力而呈现拉伸或压缩力或弯曲。在当前优选的设计中，其中具有把手的杆与杯联接，传感器围绕杆设置在杆和杆之间的凸缘之间，该凸缘可沿杆移动，使得传感器测量压力手柄和法兰。

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