Insertion Guidance System for Needles and Medical Components
    4.
    发明申请
    Insertion Guidance System for Needles and Medical Components 有权
    针和医疗部件插入指导系​​统

    公开(公告)号:US20140163356A2

    公开(公告)日:2014-06-12

    申请号:US13118033

    申请日:2011-05-27

    IPC分类号: A61B6/00

    摘要: A guidance system for assisting with the insertion of a needle or other medical component into the body of a patient is disclosed. The guidance system utilizes ultrasound imaging or other suitable imaging technology. In one embodiment, the guidance system comprises an imaging device including a probe for producing an image of an internal body portion target, such as a vessel. One or more sensors are included with the probe. The sensors sense a detectable characteristic related to the needle, such as a magnetic field of a magnet included with the needle. The system includes a processor that uses data relating to the detectable characteristic sensed by the sensors to determine a position and/or orientation of the needle in three spatial dimensions. The system includes a display for depicting the position and/or orientation of the needle together with the image of the target.

    摘要翻译: 公开了一种用于帮助将针或其他医疗部件插入患者体内的引导系统。 引导系统利用超声成像或其他合适的成像技术。 在一个实施例中,引导系统包括成像装置,其包括用于产生诸如血管的内部身体部分目标的图像的探针。 探头附带一个或多个传感器。 传感器检测与针相关的可检测特性,例如包括在针中的磁体的磁场。 该系统包括处理器,其使用与由传感器感测的可检测特性有关的数据来确定针在三个空间维度中的位置和/或取向。 该系统包括用于描绘针的位置和/或取向以及目标的图像的显示器。

    INSERTION GUIDANCE SYSTEM FOR NEEDLES AND MEDICAL COMPONENTS
    5.
    发明申请
    INSERTION GUIDANCE SYSTEM FOR NEEDLES AND MEDICAL COMPONENTS 有权
    针对和医疗部件的引导指导系统

    公开(公告)号:US20110282188A1

    公开(公告)日:2011-11-17

    申请号:US13118033

    申请日:2011-05-27

    IPC分类号: A61B6/00

    摘要: A guidance system for assisting with the insertion of a needle or other medical component into the body of a patient is disclosed. The guidance system utilizes ultrasound imaging or other suitable imaging technology. In one embodiment, the guidance system comprises an imaging device including a probe for producing an image of an internal body portion target, such as a vessel. One or more sensors are included with the probe. The sensors sense a detectable characteristic related to the needle, such as a magnetic field of a magnet included with the needle. The system includes a processor that uses data relating to the detectable characteristic sensed by the sensors to determine a position and/or orientation of the needle in three spatial dimensions. The system includes a display for depicting the position and/or orientation of the needle together with the image of the target.

    摘要翻译: 公开了一种用于帮助将针或其他医疗部件插入患者体内的引导系统。 引导系统利用超声成像或其他合适的成像技术。 在一个实施例中,引导系统包括成像装置,其包括用于产生诸如血管的内部身体部分目标的图像的探针。 探头附带一个或多个传感器。 传感器检测与针相关的可检测特性,例如包括在针中的磁体的磁场。 该系统包括处理器,其使用与由传感器感测的可检测特性有关的数据来确定针在三个空间维度中的位置和/或取向。 该系统包括用于描绘针的位置和/或取向以及目标的图像的显示器。

    Systems and methods for impedance synthesis
    6.
    发明授权
    Systems and methods for impedance synthesis 有权
    用于阻抗合成的系统和方法

    公开(公告)号:US06859051B1

    公开(公告)日:2005-02-22

    申请号:US10452373

    申请日:2003-06-02

    CPC分类号: H04B1/58

    摘要: The present invention synthesizes a prescribed impedance. The impedance is synthesized by generating a current having a value substantially equal to a voltage divided by a prescribed impedance. Sensing the line voltage and converting that sensed line voltage to its digital equivalent accomplish this first step. The digital line voltage is processed by a factor related to the prescribed impedance to produce an output voltage that has a value substantially equal to the sensed voltage divided by the prescribed impedance. The output voltage controls a voltage to current converter that generates the appropriate current across the points or terminals where the line voltage was measured. Thus, the prescribed impedance is generated across these points or terminals because the line voltage divided by the generated current is substantially equal to the prescribed impedance.

    摘要翻译: 本发明合成规定的阻抗。 通过产生具有基本上等于被规定阻抗除以的电压的值的电流来合成阻抗。 感测线路电压并将感测到的线路电压转换为其数字等效电压完成了第一步。 数字线路电压由与规定阻抗相关的因子处理,以产生具有基本上等于感测电压除以规定阻抗的值的输出电压。 输出电压控制电压到电流转换器,其在测量线路电压的点或端子处产生适当的电流。 因此,由于产生的电流除以的线电压基本上等于规定的阻抗,所以在这些点或端子之间产生规定的阻抗。

    Transfer function implementation using digital impedance synthesis
    7.
    发明授权
    Transfer function implementation using digital impedance synthesis 失效
    使用数字阻抗合成的传递函数实现

    公开(公告)号:US06338077B1

    公开(公告)日:2002-01-08

    申请号:US09321899

    申请日:1999-05-28

    IPC分类号: G06J100

    CPC分类号: H03H17/02

    摘要: A system and circuit is provided for digitally synthesizing the impedance of a transfer function. The impedance of the transfer function is digitally synthesized by generating a current that, when combined with an input voltage, results in the impedance of the transfer function. This is accomplished by sensing the input signal and processing it with a generator or multiplier such that a voltage is produced. The produced voltage controls a current source and creates a current having a value equal to the inverse of the transfer function impedance. The sensed or input voltage divided by the generated current is equal to the impedance of the transfer function. In this manner, many different transfer functions can be digitally synthesized without having to design an alternate circuit.

    摘要翻译: 提供了一种用于数字合成传递函数的阻抗的系统和电路。 传递函数的阻抗通过产生与输入电压组合导致传递函数的阻抗的电流数字合成。 这通过感测输入信号并用发生器或乘法器来处理,从而产生电压来实现。 产生的电压控制电流源并产生具有等于传递函数阻抗的倒数的值的电流。 感测或输入电压除以发电电流等于传递函数的阻抗。 以这种方式,可以数字地合成许多不同的传递函数,而不必设计备用电路。

    Methods and apparatus for adaptive filters
    8.
    发明授权
    Methods and apparatus for adaptive filters 失效
    自适应滤波器的方法和装置

    公开(公告)号:US06308192B1

    公开(公告)日:2001-10-23

    申请号:US09201351

    申请日:1998-11-30

    申请人: Shayne Messerly

    发明人: Shayne Messerly

    IPC分类号: G06F1710

    CPC分类号: H03H21/0012

    摘要: The present invention relates to improved adaptive filtering techniques and architectures. Preferably, this filtering is performed as part of the digital processing that occurs with a digital signal processor. It is a feature of this invention that the adaptive filtering taught herein provides the advantages of both serial and parallel architectures, without the accompanying disadvantages thereof. In particular, an adaptive filter is taught that possesses low pin counts, fast processing times suitable for high-speed applications and reduced numbers of filter elements. In a preferred embodiment, the inputs and outputs of the adaptive filter are supplied to and from the adaptive filter in a serial manner while the processing is performed internally within the adaptive filter in a parallel manner. The parallel processing is preferably effected by a delayed least-means-squares algorithm implemented using a single adder, a single multiplier and a single multiplier-accumulator instead of by numerous such adders, multipliers and multiplier-accumulators.

    摘要翻译: 本发明涉及改进的自适应滤波技术和架构。 优选地,该滤波作为数字信号处理器发生的数字处理的一部分来执行。 本发明的一个特征是本文教导的自适应滤波器提供了串行和并行架构的优点,而没有其伴随的缺点。 特别地,教导了具有低引脚数,适合于高速应用的快速处理时间和减少数量的滤波器元件的自适应滤波器。 在优选实施例中,自适应滤波器的输入和输出以串行方式提供给自适应滤波器,并且在自适应滤波器内部以并行方式执行处理。 并行处理优选地通过使用单个加法器,单个乘法器和单个乘法器累加器而不是由许多这样的加法器,乘法器和乘法器累加器实现的延迟最小均方算法来实现。

    System for placement of a catheter including a signal-generating stylet
    9.
    发明授权
    System for placement of a catheter including a signal-generating stylet 有权
    用于放置导管的系统,其包括产生信号的探针

    公开(公告)号:US08781555B2

    公开(公告)日:2014-07-15

    申请号:US12715556

    申请日:2010-03-02

    摘要: An integrated catheter placement system for accurately placing a catheter within a patient's vasculature is disclosed. In one embodiment, the integrated system comprises a system console, a tip location sensor unit for temporary placement on the patient's chest, and an ultrasound probe. The tip location sensor senses a field produced by a stylet disposed in a lumen of the catheter when the catheter is disposed in the vasculature. The ultrasound probe ultrasonically images a portion of the vasculature prior to introduction of the catheter. ECG signal-based catheter tip guidance is included to enable guidance of the catheter tip to a desired position with respect to a node of the patient's heart. The stylet includes an electromagnetic coil that can be operably connected to the sensor unit and/or console through a sterile barrier without compromising the barrier. The stylet can also be wirelessly connected to the sensor unit and/or console.

    摘要翻译: 公开了一种用于将导管准确地放置在患者脉管系统内的集成导管放置系统。 在一个实施例中,集成系统包括系统控制台,用于临时放置在患者胸部上的尖端位置传感器单元和超声波探头。 当导管设置在脉管系统中时,尖端位置传感器感测由设置在导管的内腔中的探针产生的场。 在引入导管之前,超声探头超声波地对一部分脉管系统进行成像。 包括基于ECG信号的导管尖端引导以使导管尖端相对于患者心脏的节点能够引导到期望位置。 探针包括电磁线圈,其可以通过无菌屏障可操作地连接到传感器单元和/或控制台,而不会影响屏障。 探针也可以无线连接到传感器单元和/或控制台。