Ultrasonic vascular imaging system and method of blood vessel cannulation
    13.
    发明授权
    Ultrasonic vascular imaging system and method of blood vessel cannulation 有权
    超声血管成像系统及血管插管方法

    公开(公告)号:US06755789B2

    公开(公告)日:2004-06-29

    申请号:US10072662

    申请日:2002-02-05

    Abstract: An apparatus, method and system for cannulation of blood vessels. The apparatus comprises a sensor assembly including two linear transducer arrays oriented perpendicularly to each other to form a “T” shape to provide substantially simultaneous ultrasound images of at least one blood vessel in a portion of a patient's body in two perpendicular planes. The apparatus may also include one or more Doppler transducer elements to transmit and receive one or more Doppler beams at an incident angle beneath one of the transducer arrays and in alignment therewith to determine blood flow direction and velocity within the at least one blood vessel. The sensor assembly may be disposed within an elongated, flexible, protective sheath and secured to a graphically marked cover to facilitate orientation of the sensor assembly on the patient and guidance of a needle towards a desired target vessel during the cannulation procedure. The cover may also include associated structure to cooperate with a reference location element to place, align and secure the sensor assembly to the patient's skin at a desired location.

    Abstract translation: 用于插管血管的装置,方法和系统。 该装置包括传感器组件,其包括彼此垂直取向以形成“T”形状的两个线性换能器阵列,以在两个垂直平面中的患者身体的一部分中提供至少一个血管的基本上同时的超声图像。 所述装置还可以包括一个或多个多普勒换能器元件,以在所述换能器阵列中的一个的入射角度下发射和接收一个或多个多普勒波束并与其对准,以确定所述至少一个血管内的血流方向和速度。 传感器组件可以设置在细长的,柔性的保护性护套内并且固定到图形标记的盖子上,以便于在插管过程期间传感器组件在患者身上的取向并且针朝向期望的目标血管的引导。 盖还可以包括相关联的结构,以与参考位置元件配合,以将传感器组件放置,对准并将其固定到患者的皮肤上的所需位置。

    Systems and methods for impedance synthesis
    14.
    发明授权
    Systems and methods for impedance synthesis 失效
    用于阻抗合成的系统和方法

    公开(公告)号:US06700387B1

    公开(公告)日:2004-03-02

    申请号:US10449636

    申请日:2003-05-30

    CPC classification number: H04B1/58

    Abstract: 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.

    Abstract translation: 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。

    Adaptive size filter for efficient computation of wavelet packet trees
    15.
    发明授权
    Adaptive size filter for efficient computation of wavelet packet trees 失效
    用于小波包树的有效计算的自适应大小滤波器

    公开(公告)号:US06581081B1

    公开(公告)日:2003-06-17

    申请号:US09489767

    申请日:2000-01-24

    CPC classification number: G06F17/148 H03H21/0043

    Abstract: This invention describes a novel method and system that implements wavelet packet trees and inverse wavelet packet trees. A modified Recursive Pyramid Algorithm (RPA) is advanced by this invention. The algorithm uses a filter that changes its size at each given octave of the wavelet packet tree. This filter may also be used in the reconstruction, synthesis, or inverse wavelet packet tree using RPA. The invention reduces the cost of implementing wavelet packet trees by using the same hardware for each octave and thereby offers superior products at attractive prices.

    Abstract translation: 本发明描述了一种实现小波包树和逆小波包树的新方法和系统。 本发明提出了一种改进的递归金字塔算法(RPA)。 该算法使用在小波包树的每个给定倍频程改变其大小的滤波器。 该滤波器也可以在使用RPA的重构,合成或反向小波包树中使用。 本发明通过对每个八度使用相同的硬件来降低实现小波包树的成本,从而以有吸引力的价格提供优质的产品。

    Systems and methods for impedance synthesis
    16.
    发明授权
    Systems and methods for impedance synthesis 失效
    用于阻抗合成的系统和方法

    公开(公告)号:US06573729B1

    公开(公告)日:2003-06-03

    申请号:US09649188

    申请日:2000-08-28

    CPC classification number: H04B1/58

    Abstract: 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.

    Abstract translation: 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。

    System and method for data pacing
    17.
    发明授权
    System and method for data pacing 失效
    数据起搏系统和方法

    公开(公告)号:US06438628B1

    公开(公告)日:2002-08-20

    申请号:US09322952

    申请日:1999-05-28

    CPC classification number: G06F13/385

    Abstract: The present invention increases data transfer rate and reduces interrupt latency while avoiding a concomitant increase in interrupts to the host, by pacing the data flow between the UART and DSP using burst modes and wait modes.

    Abstract translation: 本发明通过使用突发模式和等待模式通过在UART和DSP之间起步数据流来增加数据传输速率并减少中断等待时间,同时避免对主机的中断的伴随增加。

    Insertion guidance system for needles and medical components
    18.
    发明授权
    Insertion guidance system for needles and medical components 有权
    针和医疗部件插入引导系统

    公开(公告)号:US09554716B2

    公开(公告)日:2017-01-31

    申请号:US13118033

    申请日:2011-05-27

    Abstract: 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.

    Abstract translation: 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相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 positioning a catheter
    19.
    发明授权
    Systems and methods for positioning a catheter 有权
    用于定位导管的系统和方法

    公开(公告)号:US08478382B2

    公开(公告)日:2013-07-02

    申请号:US12369625

    申请日:2009-02-11

    Abstract: A method for displaying a position of a medical device, such as a catheter, during insertion of the medical device into a patient is disclosed. In one example embodiment, the method includes obtaining a first set of detected position data relating to a location marker, then determining a possible first position of the location marker. A first confidence level relating to a match between the first set of detected position data and a first set of predicted position data is assigned. A determination is made whether the first confidence level meets or exceeds a first threshold. If the first confidence level meets or exceeds the first threshold, a determination is then made whether the first position of the location marker is within a first detection zone. If the first position of the location marker is within the first detection zone, the first position of the location marker is displayed.

    Abstract translation: 公开了一种用于在将医疗装置插入患者体内时显示诸如导管的医疗装置的位置的方法。 在一个示例性实施例中,该方法包括获得与位置标记相关的第一组检测到的位置数据,然后确定位置标记的可能的第一位置。 分配与第一组检测位置数据和第一组预测位置数据之间的匹配相关的第一置信水平。 确定第一置信度是否满足或超过第一阈值。 如果第一置信度达到或超过第一阈值,则确定位置标记的第一位置是否在第一检测区内。 如果位置标记的第一位置在第一检测区域内,则显示位置标记的第一位置。

    Attenuation and termination circuit using impedance synthesis
    20.
    发明授权
    Attenuation and termination circuit using impedance synthesis 有权
    衰减和终端电路使用阻抗合成

    公开(公告)号:US08472614B2

    公开(公告)日:2013-06-25

    申请号:US12644201

    申请日:2009-12-22

    CPC classification number: H04M1/7385 H04M11/066

    Abstract: The present invention discloses circuits for isolating and attenuating signals generated by a telephone network. In disclosed embodiments, a metering pulse signal is isolated from the terminals of the connecting device, and then attenuated with an impedance that is synthesized with a programmable digital signal processor. Embodiments also utilize the digital signal processor to synthesize a termination impedance for the connecting device. The termination impedance matches closely the characteristic impedance of the network, so as to minimize wave reflections and the like.

    Abstract translation: 本发明公开了一种用于隔离和衰减由电话网络产生的信号的电路。 在所公开的实施例中,计量脉冲信号与连接装置的端子隔离,然后用与可编程数字信号处理器合成的阻抗衰减。 实施例还利用数字信号处理器来合成连接装置的终端阻抗。 终端阻抗与网络的特性阻抗密切相关,以便最小化波反射等。

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