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1. 发明授权

US4475072A Patient-positioning X-ray table 失效
标题翻译：患者定位X光片
公开(公告)号：US4475072A
公开(公告)日：1984-10-02
申请号：US441301
申请日：1982-11-12
申请人： Gregory D. Schwehr , Richard T. Brandt , James J. Kandler
发明人： Gregory D. Schwehr , Richard T. Brandt , James J. Kandler
IPC分类号： A61B6/04 , G05B19/28 , H01J37/20
CPC分类号： A61B6/0457 , Y10S5/943
摘要： An X-ray table having an elevator mounted on a base for vertical movement, an intermediate support mounted on the elevator for moving longitudinally, and a carriage with a patient cradle on it for moving longitudinally on the support. A pair of gas springs mounted at the forward end of the table provides a constant upward force to compensate for weight of the elevator and the cantilevered load which is exerted as the patient cradle is extended in the longitudinal direction. There are individual servomotors for driving the support and the cradle. The intermediate support drive includes a drive bar and switch assemblies for sensing any force of more than 25 lbs., for example, exerted on the patient or patient cradle and for disengaging the servodrives in response thereto. The cradle drive incorporates a zero-backlash longitudinal friction drive which includes a harmonic drive unit to achieve accurate positioning of the patient. An encoder is driven by a closed-loop cable attached to the patient cradle to accurately indicate its position and speed even though there is a two-stage drive.
摘要翻译：具有安装在用于垂直运动的基座上的电梯的X射线台，安装在电梯上纵向移动的中间支架，以及具有用于在支架上纵向移动的患者支架的滑架。安装在桌子前端的一对气弹簧提供恒定的向上的力，以补偿当患者支架在纵向方向上延伸时施加的电梯和悬臂负载的重量。有单独的伺服电机驱动支架和摇篮。中间支撑驱动器包括驱动杆和开关组件，用于感测例如施加在患者或患者支架上的任何超过25磅的力，并响应于此而使伺服驱动器脱离。托架驱动器包含零间隙纵向摩擦驱动器，其包括谐波驱动单元以实现患者的准确定位。编码器由连接到病人支架的闭环电缆驱动，即使有两级驱动，即可准确地指示其位置和速度。

2. 发明授权

US4399550A Spinning filter for X-ray apparatus 失效
标题翻译：用于X射线设备的旋转过滤器
公开(公告)号：US4399550A
公开(公告)日：1983-08-16
申请号：US238910
申请日：1981-02-27
申请人： Robert B. Hauck , Floyd L. Gray , Richard T. Brandt
发明人： Robert B. Hauck , Floyd L. Gray , Richard T. Brandt
IPC分类号： G01N23/04 , A61B6/00 , A61B6/06 , G21K1/04 , G21K1/10 , G21K3/00
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4035 , G21K1/04 , G21K1/043 , G21K1/10
摘要： Curved X-ray filter elements are arranged circularly around a drum. Alternate circumferentially adjacent elements have different filtration properties. Diametrically opposite elements have the same properties. An X-ray source provides a sequence of alternate low and high energy X-ray beam pulses. A multicell X-ray detector produces X-ray attenuation data for each pulse and the data is switched to alternate memories. A drum drive motor is energized at power line frequency. A pinion on the motor shaft turns a gear. A lug that is mounted for angular adjustment on the gear drives the drum. A multiple blade shutter is also mounted on the gear for angular adjustment and rotation with the gear. The shutter alternately interrupts and restores a light beam to a photosensitive device which produces corresponding signal state changes or trigger signals. The signals are used to synchronize the low and high energy X-ray pulses, the filter element angular locations and memory switching with power line frequency.
摘要翻译：弯曲的X射线滤光片元件围绕鼓圆周布置。替代的周向相邻元件具有不同的过滤性能。直径相对的元件具有相同的特性。 X射线源提供了一系列交替的低能量和高能量X射线束脉冲。多单元X射线检测器为每个脉冲产生X射线衰减数据，并将数据切换到备用存储器。鼓驱动电机在电源线频率下通电。马达轴上的小齿轮转动齿轮。安装在齿轮上进行角度调节的凸耳驱动滚筒。多叶片快门也安装在齿轮上，用于与齿轮进行角度调节和旋转。快门交替地中断并将光束恢复到产生对应的信号状态改变或触发信号的光敏装置。这些信号用于同步低能量和高能量X射线脉冲，滤波器元件角位置和电源线频率的存储器切换。

3. 发明授权

US4366577A Computed tomography system cable retractor 失效
标题翻译：计算机断层摄影系统电缆牵开器
公开(公告)号：US4366577A
公开(公告)日：1982-12-28
申请号：US282897
申请日：1981-07-13
申请人： Richard T. Brandt
发明人： Richard T. Brandt
IPC分类号： G01N23/04 , A61B6/00 , A61B6/03 , H02G11/00 , H05G1/02
CPC分类号： A61B6/4447 , A61B6/56 , H02G11/00
摘要： A cable retractor for a computed tomography scanner that is driven with a motor and a belt through two revolutions between clockwise and counterclockwise limits about a horizontal axis. An inner drum is fixed on the scanner for rotation therewith and a stationary outer drum is concentric to the inner drum. Cables are fastened where they enter the outer drum and exit the inner drum on their way to the scanner. A loop is formed in the cable in the circular channel defined by the concentric drums to provide enough cable length for the scanner to make two revolutions. A disk facing the channel is journalled for rotation on the inner drum. Pulleys extend axially from the disk to support the cable loop. The disk is belt driven so its angular motion is a constant fraction of the motion of the scanner whereby the pulleys move at the same rate as the loop to keep it supported as cable is reeled between the drums. Solenoid operated latching levers assure stopping the scanner rotation before the cables would be overstressed.
摘要翻译：一种用于计算机断层扫描仪的电缆牵开器，其由电动机和带通过围绕水平轴的顺时针和逆时针限制之间的两圈旋转驱动。内筒固定在扫描器上以与其一起旋转，并且固定的外鼓与内鼓同心。电缆被固定在他们进入外鼓的位置，并在通往扫描仪的途中离开内鼓。在由同心鼓限定的圆形通道中的电缆中形成环，以提供足够的电缆长度用于扫描仪进行两圈。面向通道的盘被支承在内鼓上旋转。皮带轮从盘轴向延伸以支撑电缆环。盘被带驱动，因此它的角运动是扫描器的运动的不变部分，由此滑轮以与环相同的速率移动，以在电缆卷绕在鼓之间时保持支撑。电磁操作的锁定杆确保在电缆过载之前停止扫描仪旋转。

4. 发明授权

US4361902A Collimator for x-ray diagnostic apparatus 失效
标题翻译： X线诊断仪准直仪
公开(公告)号：US4361902A
公开(公告)日：1982-11-30
申请号：US166483
申请日：1980-07-07
申请人： Richard T. Brandt , Robert B. Hauck
发明人： Richard T. Brandt , Robert B. Hauck
IPC分类号： A61B6/03 , A61B6/06 , G01B15/00 , G21K1/02 , G21K1/04 , G03B41/16
CPC分类号： A61B6/06 , G21K1/04
摘要： A collimator assembly for defining an aperture for the passage of a diagnostic x-ray beam in an x-ray diagnostic apparatus which may, for example, be used in computer assisted tomography. The collimator assembly comprises a framework adapted to be secured to the x-ray apparatus contiguous the x-ray tube, and includes a first and a second blade subassembly lying in a common plane with each other in the path of x-rays emanating from the x-ray tube. Leaf spring means connect each of the blade subassemblies to the framework, the leaf spring means biasing the first and second blade subassemblies into abutting relation to each other whereby to define a zero aperture condition for the passage of a diagnostic x-ray beam through said collimator assembly to the patient. Cam follower means are carried by each of the respective first and second blade subassemblies, and movable cam means are mounted on the framework and engageable with the cam follower means of said first and said second blade subassemblies whereby movement of the cam means is effective to move the first and second blade subassemblies against the biasing force of the spring means to a controlled degree of opening between the first and second blade subassemblies whereby to define a collimating aperture of a predetermined size between said subassemblies for the passage of a diagnostic x-ray beam of a predetermined size to the patient. A further feature of the collimator assembly is the use of a direct acting sensing arrangement for sensing the collimating opening between the two blade subassemblies. This sensing arrangement is embodied in an electromagnetic transducer in the form of a linear variable differential transformer.
摘要翻译：准直器组件，其用于限定用于X射线诊断装置中的诊断X射线束通过的孔，其可以例如用于计算机辅助断层摄影。准直器组件包括适于固定到邻近x射线管的x射线设备的框架，并且包括位于公共平面中的第一和第二叶片子组件，所述第一和第二叶片子组件在从所述X射线管发射的x射线的路径中彼此相对 x射线管。叶片弹簧装置将每个叶片子组件连接到框架上，板簧装置将第一和第二叶片子组件偏置成彼此邻接关系，从而限定零孔径条件，以使诊断X射线束通过所述准直仪组装到病人身上。凸轮从动装置由相应的第一和第二叶片子组件中的每一个承载，并且可移动的凸轮装置安装在框架上并且可与所述第一和第二叶片子组件的凸轮从动装置接合，由此凸轮装置的运动有效地移动所述第一和第二叶片子组件克服所述弹簧装置的偏压力，在所述第一和第二叶片子组件之间的受控程度的开度，从而在所述子组件之间限定预定尺寸的准直孔以便通过诊断X射线束具有预定尺寸的患者。准直器组件的另一个特征是使用直接作用的感测装置来感测两个叶片子组件之间的准直开口。该感测装置体现在线性可变差动变压器形式的电磁换能器中。

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