公开(公告)号：US4989609A

公开(公告)日：1991-02-05

申请号：US302402

申请日：1989-01-26

申请人： Dirk R. Smith ,  Billy L. Weaver

发明人： Dirk R. Smith ,  Billy L. Weaver

IPC分类号： A61B8/06 ,  G01F1/66

CPC分类号： A61B8/06 ,  G01F1/663

摘要： A Doppler blood flow system and method in which an ultrasonic wave is reflected off of red blood cells in blood flowing in tubing. The reflected ultrasonic wave is digitally processed in the frequency domain. The flow rate of the blood is directly related to the average frequency of the Doppler signal. Because the Doppler blood flow system calculates flow rate solely on the basis of frequency, a special case exists at zero rate of flow where the received signal is not a valid Doppler flow signal, but rather purely noise. The noise at zero flow rate is random and will not have an average frequency which is unique to zero flow. The Doppler blood flow system and method must invoke a special case determination of when a zero flow condition exists in order to accurately provide a blood flow rate. The system utilizes a method of determining the rate of flow of a fluid containing particles flowing through a tube. An ultrasonic signal is transmitted through the tube at an oblique angle thereto. The ultrasonic signal which has been reflected off of the particles contained in the fluid is received as a received ultrasonic signal. The rate of flow of the fluid is calculated from the received ultrasonic signal using Doppler techniques. Whether the special case of the value of the rate of flow being equal to zero exists is determined and the value of the rate of flow is set equal to zero for the special case.

公开(公告)号：US4993418A

公开(公告)日：1991-02-19

申请号：US302406

申请日：1989-01-26

申请人： Billy L. Weaver ,  Dirk R. Smith

发明人： Billy L. Weaver ,  Dirk R. Smith

IPC分类号： A61B8/06 ,  G01F1/66 ,  G01P5/24 ,  G01S15/52 ,  G01S15/58

CPC分类号： A61B8/06 ,  A61B8/12 ,  G01F1/663 ,  G01P5/242 ,  G01S15/52 ,  G01S15/582

摘要： A Doppler blood flow system and method in which an ultrasonic wave is reflected off of red blood cells in blood flowing in tubing. The reflected ultrasonic wave is digitally processed in the frequency domain. The flow rate of the blood is directly related to the average frequency of the Doppler signal. The typical Doppler signal is not a single frequency representing a single flow rate but is really an entire range of frequencies in which certain frequencies predominate which are indicated by increased amplitude of the signal when plotted in the frequency domain. The typical Doppler signal may actually have two "humps", one at a higher frequency which represents the actual information bearing content of the signal related to flow rate and one at a lower frequency which is caused by vibrations in the blood tubing system itself and could be caused by motor noise from the blood pump. Since the flow rate is related to average frequency of the information bearing portion of the typical Doppler signal, the low frequency "hump" must be taken out of the Doppler signal in order to obtain an accurate flow rate.

摘要翻译： 一种多普勒血流系统和方法，其中超声波从管道中流动的血液中的红细胞反射出来。 反射超声波在频域进行数字处理。 血液的流速与多普勒信号的平均频率直接相关。 典型的多普勒信号不是表示单个流量的单一频率，而是实际上是在频率范围内绘制时信号幅度增加表示某些频率占优势的整个频率范围。 典型的多普勒信号可能实际上具有两个“隆起”，一个在较高的频率处，一个表示与流量有关的信号的实际信息承载内容，一个在较低频率下由血管系统本身的振动引起， 由血泵的电机噪音引起。 由于流量与典型多普勒信号的信息承载部分的平均频率有关，所以必须从多普勒信号中取出低频“驼峰”，以获得准确的流量。

公开(公告)号：US07006005B2

公开(公告)日：2006-02-28

申请号：US09030989

申请日：1998-02-26

申请人： Richard A. Nazarian ,  Dirk R. Smith ,  James R. Watts ,  Timothy J. Kriewall ,  Richard A. Griewski

发明人： Richard A. Nazarian ,  Dirk R. Smith ,  James R. Watts ,  Timothy J. Kriewall ,  Richard A. Griewski

IPC分类号： H04Q1/00

CPC分类号： G06F19/3418 ,  A61M1/3621 ,  G06F19/00

摘要： An adapter pod for use in a medical perfusion system having a data communications network with a plurality of connection points each having a substantially identical network connector. The adapter pod includes a housing and a common connector associated with the housing which is adapted to be connected to one of the network connectors and which has a connector configuration. A device connector is also associated with the housing, is adapted to be connected to a perfusion device, and has a configuration different than the connector configuration of the common connector. A controller is disposed within the housing and is adapted to generate messages in the form of digital data packets.

摘要翻译： 一种用于医疗灌注系统的适配器盒，具有具有多个连接点的数据通信网络，每个连接点具有基本相同的网络连接器。 适配器盒包括壳体和与壳体相关联的公共连接器，其适于连接到网络连接器中的一个并且具有连接器配置。 设备连接器也与壳体相关联，适于连接到灌注装置，并且具有与公共连接器的连接器配置不同的配置。 控制器设置在壳体内并且适于以数字数据分组的形式产生消息。

公开(公告)号：US6164920A

公开(公告)日：2000-12-26

申请号：US722980

申请日：1996-09-30

申请人： Richard A. Nazarian ,  Dirk R. Smith ,  James R. Watts ,  Timothy J. Kriewall ,  Richard A. Griewski

发明人： Richard A. Nazarian ,  Dirk R. Smith ,  James R. Watts ,  Timothy J. Kriewall ,  Richard A. Griewski

IPC分类号： A61M1/14 ,  A61M1/36 ,  F04B41/06

CPC分类号： A61M1/3621

摘要： A medical perfusion system for use in connection with the medical treatment of a patient is provided with a first type of perfusion device in the form of a blood pump adapted to pump blood through a fluid conduit connected to the patient and a second type of perfusion device in the form of a sensing device adapted to sense a condition and generate a sensing signal relating to the condition. The perfusion system also includes an electrical power network having an electrical power line, means for selectively connecting the perfusion devices to the electrical power network, and a controller with an input device for accepting control commands from an operator. The perfusion system could also include a control device, such as a pump, a plurality of sensing devices, and means for specifying the sensing device that the control device should be accept feedback from.

摘要翻译： 用于与患者的医疗相关联使用的医用灌注系统设置有血泵形式的第一类型的灌注装置，其适于通过连接到患者的流体导管泵送血液，以及第二类型的灌注装置 以感测装置的形式，适于感测状况并产生与该状况相关的感测信号。 灌注系统还包括具有电力线的电力网络，用于将灌注装置选择性地连接到电力网络的装置，以及具有用于接受来自操作者的控制命令的输入装置的控制器。 灌注系统还可以包括诸如泵，多个感测装置的控制装置，以及用于指定控制装置应该接受反馈的感测装置的装置。

公开(公告)号：US5813972A

公开(公告)日：1998-09-29

申请号：US723504

申请日：1996-09-30

申请人： Richard A. Nazarian ,  Dirk R. Smith ,  James R. Watts ,  Timothy J. Kriewall ,  Richard A. Griewski

发明人： Richard A. Nazarian ,  Dirk R. Smith ,  James R. Watts ,  Timothy J. Kriewall ,  Richard A. Griewski

IPC分类号： A61M1/14 ,  A61M1/36 ,  A61M1/00

CPC分类号： G06F19/3418 ,  A61M1/3621

摘要： A medical perfusion system for use in connection with the medical treatment of a patient is provided with a first type of perfusion device in the form of a blood pump adapted to pump blood through a fluid conduit connected to the patient, a second type of perfusion device in the form of a sensor adapted to sense a condition relating to the pumping of blood through the fluid conduit and to generate a sensing signal relating to the condition, and a data communications network for operatively interconnecting the perfusion devices. The perfusion system also includes means for transmitting messages in the form of digital data packets among the perfusion devices over the data communications network and a controller operatively coupled to the perfusion devices via the data communications network, the controller having an input device for accepting pump control commands relating to the blood pump from an operator.

摘要翻译： 用于与患者的医疗相结合使用的医用灌注系统设置有血泵形式的第一类型的灌注装置，其适于将血液泵送通过连接到患者的流体导管，第二类型的灌注装置 传感器的形式，适于感测与通过流体导管泵送血液有关的状况，并产生与该状况相关的感测信号，以及用于可操作地互连灌注装置的数据通信网络。 灌注系统还包括用于通过数据通信网络在灌注装置之间以数字数据分组的形式发送消息的装置，以及经由数据通信网络可操作地耦合到灌注装置的控制器，该控制器具有用于接受泵控制的输入装置 与来自操作员的血液泵相关的命令。