公开(公告)号：US20060259041A1

公开(公告)日：2006-11-16

申请号：US11129225

申请日：2005-05-13

申请人： David Hoffman ,  Christopher Rowland

发明人： David Hoffman ,  Christopher Rowland

IPC分类号： A61B17/10

CPC分类号： A61B1/012 ,  A61B1/00087 ,  A61B1/00103 ,  A61B1/018 ,  A61B17/12013 ,  A61B2017/12018 ,  A61B2090/0803

摘要： A variceal banding endoscope includes an elongated shaft having a distal end and a proximal end that is removably connected to a control unit. The endoscope includes a variceal banding apparatus fixedly attached to the distal end of the endoscope and capable of receiving a plurality of ligation bands. A trigger cable extends from the proximal end to the distal end of the shaft and is digitally actuated by an actuator in the control unit or handle of the scope in response to a user input device.

公开(公告)号：US20060203957A1

公开(公告)日：2006-09-14

申请号：US11380488

申请日：2006-04-27

申请人： Haochuan Jiang ,  David Hoffman ,  James Vartuli

发明人： Haochuan Jiang ,  David Hoffman ,  James Vartuli

IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC分类号： G01T1/2985 ,  A61B6/032 ,  A61B6/4233 ,  G01N23/046 ,  G01N2223/419 ,  G01T1/1644 ,  G01T1/201 ,  G21K1/02

摘要： The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.

摘要翻译： 本发明涉及一种用于CT检测器的非像素化闪烁体阵列以及其制造方法。 闪烁体阵列包括相对于彼此平行对准的多个陶瓷纤维或单晶纤维。 因此，该包装具有非常高的剂量效率。 此外，每个光纤被设计成将光引导到具有非常低的散射损耗的光电二极管。 可以控制纤维尺寸（横截面直径），使得可以制造更小的纤维用于更高分辨率的应用。 此外，由于可以将整个闪烁体阵列的纤维尺寸控制为一致，并且纤维彼此平行排列，所以闪烁体阵列整体上也是均匀的。 因此，不需要与光电二极管阵列或准直器组件的精确对准。

公开(公告)号：US20060043306A1

公开(公告)日：2006-03-02

申请号：US11164036

申请日：2005-11-08

申请人： David Hoffman ,  Michael Hoge

发明人： David Hoffman ,  Michael Hoge

IPC分类号： G01T1/20

CPC分类号： G01T1/2018 ,  A61B6/032 ,  A61B6/4291 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G01T1/2002 ,  G01T1/202 ,  G01T1/2985

摘要： The present invention is a directed to a CT detector for a CT imaging system that incorporates a segmented optical coupler between a photodiode array and a scintillator array. The segmented optical coupler also operates as a light collimator which improves the light collection efficiency of the photodiode array. The segmented optical coupler is defined by a series of reflector elements that collectively form a plurality of open cells. The open cells form light transmission cavities and facilitate the collimation of light from a scintillator to a photodiode. The cavities may be filled with optical epoxy for sealing to the photodiode array.

公开(公告)号：US20050185765A1

公开(公告)日：2005-08-25

申请号：US11059924

申请日：2005-02-17

申请人： Yem Chin ,  Charles Pugsley, ,  David Hoffman

发明人： Yem Chin ,  Charles Pugsley, ,  David Hoffman

IPC分类号： A61N5/10 ,  H01J5/18 ,  H01J35/18

CPC分类号： A61N5/1001

摘要： A miniaturized x-ray apparatus for delivering x-rays to a selected site within a body cavity includes a catheter having at least one lumen and an x-ray transparent window at a distal end thereof; an x-ray source in the lumen adjacent said x-ray transparent window; a movable x-ray shield positioned to direct x-rays from the source through the x-ray transparent window to the selected site.

公开(公告)号：US20050184242A1

公开(公告)日：2005-08-25

申请号：US10908209

申请日：2005-05-02

申请人： David Hoffman ,  Michael Hoge

发明人： David Hoffman ,  Michael Hoge

IPC分类号： A61B6/03 ,  G01T1/20 ,  H01L31/09

CPC分类号： G01T1/2018 ,  A61B6/032 ,  A61B6/4291 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G01T1/2002 ,  G01T1/202 ,  G01T1/2985

摘要： The present invention is a directed to a CT detector for a CT imaging system that incorporates a segmented optical coupler between a photodiode array and a scintillator array. The segmented optical coupler also operates as a light collimator which improves the light collection efficiency of the photodiode array. The segmented optical coupler is defined by a series of reflector elements that collectively form a plurality of open cells. The open cells form light transmission cavities and facilitate the collimation of light from a scintillator to a photodiode. The cavities may be filled with optical epoxy for sealing to the photodiode array.

摘要翻译： 本发明涉及一种用于CT成像系统的CT检测器，其中包括光电二极管阵列和闪烁体阵列之间的分段光耦合器。 分段光耦合器还用作光准直器，其提高了光电二极管阵列的光收集效率。 分段光耦合器由共同形成多个开放单元的一系列反射器元件限定。 开放的电池形成光透射腔，并促进从闪烁体到光电二极管的准直。 空腔可以填充有光学环氧树脂以密封到光电二极管阵列。

公开(公告)号：US20050167603A1

公开(公告)日：2005-08-04

申请号：US10707984

申请日：2004-01-29

申请人： David Hoffman

发明人： David Hoffman

IPC分类号： G01T1/20 ,  G01T1/24 ,  G01T1/29 ,  H01L25/04 ,  H01L27/14 ,  H01L27/144 ,  H01L27/146 ,  H01L31/09 ,  H01L31/102 ,  H04N5/32

CPC分类号： G01T1/2018 ,  H01L27/1446 ,  H01L27/14632 ,  H01L27/1464 ,  H01L27/14661 ,  H01L27/14663

摘要： A photodiode detector assembly for use with an ionizing radiation detector, the assembly includes a first layer having a first side and a second side and an array of backlit photodiodes disposed at the second side, and a second layer disposed proximate to and opposing the second side of the first layer. The second layer includes thru vias. Light rays entering the first layer at the first side and impinging the backlit photodiodes at the second side result in electrical signals at the thru vias of the second layer, thereby providing electrical output signals from the backlit photodiodes at a distance from the backlit photodiodes.

摘要翻译： 一种与电离辐射检测器一起使用的光电二极管检测器组件，该组件包括具有第一侧和第二侧的第一层和设置在第二侧的背光光电二极管的阵列，以及靠近第二侧设置的第二层 的第一层。 第二层包括通孔。 在第一侧进入第一层并在第二侧撞击背光光电二极管的光线在第二层的通孔处产生电信号，从而提供距离背光光电二极管一定距离的背光光电二极管的电输出信号。

公开(公告)号：US20050129175A1

公开(公告)日：2005-06-16

申请号：US10707422

申请日：2003-12-12

申请人： Bing Shen ,  David Hoffman ,  Thomas Toth

发明人： Bing Shen ,  David Hoffman ,  Thomas Toth

IPC分类号： A61B6/00 ,  A61B6/03 ,  G01N23/04

CPC分类号： A61B6/583 ,  A61B6/032 ,  A61B6/4021

摘要： A focal spot sensing device includes: a housing that resists x-ray beams; an opening disposed in a wall of the housing that allows an x-ray beam to enter the housing; and a sensor device disposed in the housing that interprets a position of the x-ray beam for calculating a position of a focal spot. An imaging system includes: an x-ray source that produces an x-ray beam and has a focal spot; a detector array that receives the x-ray beam and includes a focal spot sensing device, the focal spot sensing device includes: a housing that resists x-ray beams; an opening disposed in a wall of the housing that allows the x-ray beam to enter the housing; and a sensor device disposed in the housing that interprets a position of the x-ray beam for calculating a position of the focal spot. A method for sensing a focal spot, the method includes: receiving an x-ray beam into an opening of a focal spot sensing device; interpreting a position of the x-ray beam; and calculating or measuring a position of a focal spot.

摘要翻译： 焦点感测装置包括：抵抗x射线束的壳体; 设置在壳体的壁中的允许X射线束进入壳体的开口; 以及设置在壳体中的传感器装置，其解释用于计算焦点位置的x射线束的位置。 成像系统包括：x射线源，其产生x射线束并具有焦点; 接收所述X射线束并且包括焦点感测装置的检测器阵列，所述焦点感测装置包括：抵抗x射线束的壳体; 设置在壳体的壁中的允许X射线束进入壳体的开口; 以及设置在壳体中的传感器装置，其解释用于计算焦点位置的x射线束的位置。 一种用于感测焦点的方法，所述方法包括：将x射线束接收到焦点感测装置的开口中; 解释x射线束的位置; 以及计算或测量焦斑的位置。

公开(公告)号：US20050129171A1

公开(公告)日：2005-06-16

申请号：US10707405

申请日：2003-12-11

申请人： Haochuan Jiang ,  David Hoffman

发明人： Haochuan Jiang ,  David Hoffman

IPC分类号： G01N23/04 ,  A61B6/03 ,  G01T1/20 ,  H01L31/09 ,  G21K1/12 ,  A61B6/00 ,  H05G1/60

CPC分类号： G01T1/2002 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/4411

摘要： A multi-layer reflector for a CT detector is disclosed. The reflector includes an x-ray absorption component that is sandwiched between a pair of highly reflective components. Such a reflector is formed between adjacent scintillators of a CT detector so as to reduce cross-talk between adjacent scintillators as well as maintain a relatively high light output for signal detection. Moreover, the multi-layer reflectors may be disposed one-dimensionally or two-dimensionally across a scintillator array. A method of manufacturing such a reflector and incorporating same into a CT detector is also disclosed.

摘要翻译： 公开了一种用于CT检测器的多层反射器。 反射器包括夹在一对高反射部件之间的x射线吸收部件。 这样的反射器形成在CT检测器的相邻的闪烁体之间，以减少相邻的闪烁体之间的串扰，并且保持用于信号检测的较高的光输出。 此外，多层反射器可以一次性地或二维地布置在闪烁体阵列上。 还公开了制造这种反射器并将其结合到CT检测器中的方法。

公开(公告)号：US4466528A

公开(公告)日：1984-08-21

申请号：US292692

申请日：1981-08-13

申请人： David Hoffman

发明人： David Hoffman

IPC分类号： G07F5/22 ,  G07F11/00

CPC分类号： G07F5/22

摘要： Apparatus for preventing circuit burn-out in motor driven merchandisers, in one form of which a plurality of redundant diodes connects a price matrix to the open contacts of the selection switches. In another form, the price matrix is connected to the first normally open contacts of double pole, double throw selection switches, the second normally open contacts connected to the delivery drive means.

摘要翻译： 用于防止电动机驱动商品销售中的电路烧坏的装置，其中多个冗余二极管将价格矩阵连接到选择开关的开放触点。 在另一种形式中，价格矩阵连接到双极双掷选择开关的第一常开触点，第二常开触点连接到输送驱动装置。

公开(公告)号：US4284184A

公开(公告)日：1981-08-18

申请号：US98772

申请日：1979-12-03

申请人： David Hoffman

发明人： David Hoffman

IPC分类号： G07F5/22 ,  G07F9/00 ,  G07F11/00

CPC分类号： G07F5/22 ,  G07F9/00

摘要： An interface between a merchandising machine which requires a voltage of a first magnitude for its operation and a coin mechanism which operates at a voltage of a second magnitude in which each selection of the machine is provided with a customer-operated double-pole switch, one pole of which is connected to the coin mechanism to complete the circuit of a relay through the second magnitude voltage source if a sum in money aggregating the purchase price of the article corresponding to the operated switch has been deposited. Completion of the relay circuit closes a switch to complete a circuit from the first magnitude voltage source to the selected unit operating element through the other pole of the operated double-pole switch.

摘要翻译： 商业化机器之间的接口，其需要用于其操作的第一大小的电压和在第二大小的电压下操作的硬币机构，其中机器的每次选择设置有客户操作的双极开关 如果存储了与所操作的开关相对应的物品的购买价格中的金额合计已经存入，则其极连接到硬币机构以完成通过第二大小电压源的继电器的电路。 继电器电路的完成关闭开关，以通过所操作的双极开关的另一极来完成从第一幅度电压源到所选单元操作元件的电路。