公开(公告)号：US06315725B1

公开(公告)日：2001-11-13

申请号：US09443165

申请日：1999-11-19

申请人： Donald Masters

发明人： Donald Masters

IPC分类号： A61B800

CPC分类号： G01S7/52023 ,  G01S15/895

摘要： An ultrasound imaging system with a slewing bandpass filter is disclosed for selective passage of time varying acoustic signals. The bandpass filter includes an input node to receive unprocessed signals at a certain frequency, with the unprocessed signals constituting an input signal. A signal source is configured to provide a reference signal, and a mixer is configured to receive the input signal and the reference signal, and to mix the input signal and the reference signal to a desired frequency range. A fixed bandpass filter is configured to have a passband frequency above or below the frequency range and to provide a filtered output signal with a scannable bandwidth passband characteristic useful for examining the time varying characteristics of the input signal. A controller is provided to control the signal source in accordance with time-varying characteristics of interest.

摘要翻译： 公开了一种具有旋转带通滤波器的超声成像系统，用于选择性地通过时变声信号。 带通滤波器包括用于以特定频率接收未处理的信号的输入节点，未处理的信号构成输入信号。 信号源被配置为提供参考信号，并且混频器被配置为接收输入信号和参考信号，并且将输入信号和参考信号混合到期望的频率范围。 固定带通滤波器被配置为具有高于或低于频率范围的通带频率，并且提供具有可用于检查输入信号的时变特性的可扫描带宽通带特性的滤波输出信号。 提供控制器以根据感兴趣的时变特性来控制信号源。

公开(公告)号：US6017312A

公开(公告)日：2000-01-25

申请号：US17583

申请日：1998-02-03

申请人： Donald Masters

发明人： Donald Masters

IPC分类号： A61B8/12

CPC分类号： A61B8/12 ,  A61B8/4461

摘要： The present invention provides for catheter systems and methods of their use. In one embodiment, the invention provides a catheter comprising a catheter body having a proximal end, a distal end and a working lumen. A drive cable is disposed within the lumen and at least one transducer is attached to the cable near the distal end. A rotary transformer is included, comprising a transformer stator which is spaced apart from a transformer rotor. The rotor is operably attached to the cable to rotate therewith. The rotor is electrically coupled to the transducer and is magnetically coupled to the stator to allow a signal to be transmitted from the transducer to the stator during rotation of the cable.

摘要翻译： 本发明提供导管系统及其使用方法。 在一个实施例中，本发明提供一种导管，其包括具有近端，远端和工作腔的导管本体。 驱动电缆设置在内腔内，并且至少一个换能器附接到靠近远端的电缆。 包括旋转变压器，包括与变压器转子间隔开的变压器定子。 转子可操作地附接到电缆以与其一起旋转。 转子电耦合到换能器并且磁耦合到定子，以允许信号在电缆旋转期间从换能器传递到定子。