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149 条记录 (耗时 0.022 秒)

    Intravascular filter with debris entrapment mechanism
    82.
    发明授权
    Intravascular filter with debris entrapment mechanism 有权
    血管内滤器与碎片夹带机制

    公开(公告)号：US06692513B2

    公开(公告)日：2004-02-17

    申请号：US09896258

    申请日：2001-06-29

    申请人： Richard B. Streeter ,  Gregory H. Lambrecht ,  John R. Liddicoat ,  Robert Kevin Moore ,  Todd F. Davenport

    发明人： Richard B. Streeter ,  Gregory H. Lambrecht ,  John R. Liddicoat ,  Robert Kevin Moore ,  Todd F. Davenport

    IPC分类号： A61M2900

    CPC分类号： A61F2/013 ,  A61F2/01 ,  A61F2002/018 ,  A61F2230/0006 ,  A61F2230/0067 ,  A61F2230/008

    摘要： Apparatus for filtering and entrapping debris in the vascular system of a patient, the apparatus including a filter to allow blood to flow therethrough and to restrict passage of debris, wherein the filter captures debris carried in a first direction of blood flow. The apparatus further includes an entrapment mechanism which allows passage of debris and blood therethrough, in the first direction of blood flow and prevents debris passage in a second direction. The entrapment mechanism and filter allow blood and debris therethrough in the first direction of blood flow. The entrapment mechanism prevents debris flow in the second direction of blood flow A method for filtering and entrapping debris in the vascular system includes inserting the apparatus into the vascular system, allowing blood and debris carried therein to flow through the entrapment mechanism, and removing the apparatus and accumulated debris from the vascular system.

    摘要翻译： 用于过滤和捕获患者血管系统中的碎屑的装置，所述装置包括允许血液流过其中并且限制碎屑通过的过滤器，其中所述过滤器捕获沿第一血流方向携带的碎屑。 该装置还包括捕获机构，其允许碎屑和血液沿第一血流方向通过，并且防止碎片在第二方向上通过。 捕获机构和过滤器允许在第一血流方向上的血液和碎屑通过其中。 夹带机构防止泥石流在血液流动的第二方向上。用于过滤和捕获血管系统中的碎屑的方法包括将装置插入血管系统中，使得其中携带的血液和碎屑流过捕获机构，并且移除装置 并从血管系统积聚碎屑。

    Cardiac valve procedure methods and devices
    85.
    发明授权
    Cardiac valve procedure methods and devices 有权
    心脏瓣膜手术方法和装置

    公开(公告)号：US09101470B2

    公开(公告)日：2015-08-11

    申请号：US11115064

    申请日：2005-04-26

    申请人： Gregory H. Lambrecht ,  John Liddicoat ,  Robert Kevin Moore

    发明人： Gregory H. Lambrecht ,  John Liddicoat ,  Robert Kevin Moore

    IPC分类号： A61F2/24

    CPC分类号： A61F2/2418 ,  A61F2/2412 ,  A61F2/2427 ,  A61F2220/0016 ,  A61F2250/0059

    摘要： The present invention discloses devices and methods for performing intravascular procedures without cardiac bypass. The devices include various embodiments of temporary filter devices, temporary valves, and prosthetic valves.The temporary filter devices have one or more cannulae which provide access for surgical tools for effecting repair of the cardiac valves. A cannula may have filters of various configurations encircling the distal region of the cannula, which prevent embolitic material from entering the coronary arteries and aorta.The temporary valve devices may also have one or more cannulae which guide the insertion of the valve into the aorta. The valve devices expand in the aorta to occupy the entire flow path of the vessel. In one embodiment, the temporary valve is a disc of flexible, porous, material that acts to filter blood passing therethrough. A set of valve leaflets extend peripherally from the disc. These leaflets can alternately collapse to prevent blood flow through the valve and extend to permit flow.The prosthetic valves include valve fixation devices which secure the prosthetic valve to the wall of the vessel. In one embodiment, the prosthetic valves have at least one substantially rigid strut, at least two expandable fixation rings located about the circumference of the base of the apex of the valve, and one or more commissures and leaflets. The prosthetic valves are introduced into the vascular system a compressed state, advanced to the site of implantation, expanded and secured to the vessel wall.

    摘要翻译： 本发明公开了一种在没有心脏旁路的情况下执行血管内手术的装置和方法。 这些装置包括临时过滤装置，临时阀和假肢阀的各种实施例。 临时过滤器装置具有一个或多个套管，其提供用于外科手术工具的进入以实现心脏瓣膜的修复。 套管可以具有围绕套管的远侧区域的各种构造的过滤器，其防止栓塞材料进入冠状动脉和主动脉。 临时阀装置还可以具有一个或多个引导阀插入主动脉的套管。 瓣膜装置在主动脉中扩张以占据血管的整个流动路径。 在一个实施例中，临时阀是柔性多孔材料的盘，其用于过滤血液中的血液。 一组瓣叶从圆盘外围延伸。 这些传单可以交替塌缩，以防止血液流过阀门并延伸以允许流动。 假体瓣膜包括固定假体瓣膜至血管壁的瓣膜固定装置。 在一个实施例中，人造瓣膜具有至少一个基本上刚性的支柱，围绕阀的顶点的基部的圆周定位的至少两个可扩张的固定环，以及一个或多个连合和传单。 人造瓣膜被引入血管系统中的压缩状态，前进到植入部位，扩张并固定到血管壁。

    Image sensor arrangement
    86.
    发明授权
    Image sensor arrangement 有权
    图像传感器布置

    公开(公告)号：US08772695B2

    公开(公告)日：2014-07-08

    申请号：US13324009

    申请日：2011-12-13

    申请人： Graeme Storm ,  Matthew Purcell ,  Derek Tolmie ,  John Kevin Moore ,  Michael Wigley

    发明人： Graeme Storm ,  Matthew Purcell ,  Derek Tolmie ,  John Kevin Moore ,  Michael Wigley

    IPC分类号： H01L21/00 ,  H04N3/14

    CPC分类号： H04N5/378 ,  H04N5/347 ,  H04N5/363

    摘要： Each column of pixels in an image sensor array has at least two column bitlines connected to an output of each pixel. A readout input circuit includes first inputs and a second input. Each first input is connected, via a capacitance, to a comparator input node. The second input is connected via a capacitance to the same comparator input node. The first inputs receive, in parallel, an analog signal acquired from the pixels via the column bitlines. The analog signals vary during a pixel readout period and have a first level during a first calibration period and a second level during a second read period with the analog signals being constantly read onto the capacitances during both the first calibration period and the second read period. The comparator compares an average of the signals on the plurality of first inputs to the reference signal.

    摘要翻译： 图像传感器阵列中的每列像素具有连接到每个像素的输出的至少两列列位线。 读出输入电路包括第一输入和第二输入。 每个第一输入通过电容连接到比较器输入节点。 第二个输入通过电容连接到同一个比较器输入节点。 第一输入并行地接收通过列位线从像素获取的模拟信号。 模拟信号在像素读出周期期间变化，并且在第一校准周期期间具有第一电平，并且在第二读取周期期间具有第二电平，同时在第一校准周期和第二读取周期期间模拟信号恒定地读取到电容上。 比较器将多个第一输入端的信号的平均值与参考信号进行比较。

    Analog to digital conversion in image sensors
    87.
    发明授权
    Analog to digital conversion in image sensors 有权
    图像传感器中的模数转换

    公开(公告)号：US08749682B2

    公开(公告)日：2014-06-10

    申请号：US13081678

    申请日：2011-04-07

    申请人： John Kevin Moore

    发明人： John Kevin Moore

    IPC分类号： H04N3/14 ,  H04N5/335

    CPC分类号： H04N5/378 ,  H04N5/3658 ,  H04N5/3745

    摘要： An image sensor has a pixel array and an input circuit. The input circuit includes a first input, a second input and two coupling capacitors. The first input receives an analog signal from a pixel of the pixel array which has a first level during a first calibration period and a second level during a second read period. The second input receives a reference ramp signal. A comparator circuit compares the ramp signal and the analog signal. The analog signal and the ramp signal are constantly read onto the coupling capacitors during both the first calibration period and the second read period. The ramp circuit begins providing the ramp signal during the second read period so as to determine the change in magnitude of the analog signal between the first calibration period and the second read period, the ramp circuit also begins providing the ramp signal during the first calibration period so as to compensate for any delay in the ramp circuit providing the ramp signal during the second read period.

    摘要翻译： 图像传感器具有像素阵列和输入电路。 输入电路包括第一输入，第二输入和两个耦合电容。 第一输入从像素阵列的像素接收模拟信号，该像素阵列在第一校准周期期间具有第一电平，在第二读取周期期间接收第二电平。 第二输入接收参考斜坡信号。 比较器电路比较斜坡信号和模拟信号。 在第一校准周期和第二读取周期期间，模拟信号和斜坡信号都恒定地读取到耦合电容上。 斜坡电路在第二读取周期期间开始提供斜坡信号，以便确定在第一校准周期和第二读取周期之间的模拟信号幅度的变化，斜坡电路还在第一校准周期期间开始提供斜坡信号 以补偿在第二读取周期期间提供斜坡信号的斜坡电路中的任何延迟。

    IMAGE SENSOR ARRANGEMENT
    90.
    发明申请
    IMAGE SENSOR ARRANGEMENT 有权
    图像传感器布置

    公开(公告)号：US20120312963A1

    公开(公告)日：2012-12-13

    申请号：US13324009

    申请日：2011-12-13

    申请人： Graeme STORM ,  Matthew PURCELL ,  Derek TOLMIE ,  John Kevin MOORE ,  Michael WIGLEY

    发明人： Graeme STORM ,  Matthew PURCELL ,  Derek TOLMIE ,  John Kevin MOORE ,  Michael WIGLEY

    IPC分类号： H01L27/146

    CPC分类号： H04N5/378 ,  H04N5/347 ,  H04N5/363

    摘要： Each column of pixels in an image sensor array has at least two column bitlines connected to an output of each pixel. A readout input circuit includes first inputs and a second input. Each first input is connected, via a capacitance, to a comparator input node. The second input is connected via a capacitance to the same comparator input node. The first inputs receive, in parallel, an analog signal acquired from the pixels via the column bitlines. The analog signals vary during a pixel readout period and have a first level during a first calibration period and a second level during a second read period with the analog signals being constantly read onto the capacitances during both the first calibration period and the second read period. The comparator compares an average of the signals on the plurality of first inputs to the reference signal.

    摘要翻译： 图像传感器阵列中的每列像素具有连接到每个像素的输出的至少两列列位线。 读出输入电路包括第一输入和第二输入。 每个第一输入通过电容连接到比较器输入节点。 第二个输入通过电容连接到同一个比较器输入节点。 第一输入并行地接收通过列位线从像素获取的模拟信号。 模拟信号在像素读出周期期间变化，并且在第一校准周期期间具有第一电平，并且在第二读取周期期间具有第二电平，同时在第一校准周期和第二读取周期期间模拟信号恒定地读取到电容上。 比较器将多个第一输入端的信号的平均值与参考信号进行比较。