公开(公告)号：US20130131523A1

公开(公告)日：2013-05-23

申请号：US13469485

申请日：2012-05-11

申请人： Todd M. Suchecki ,  Alan K. Evans

发明人： Todd M. Suchecki ,  Alan K. Evans

IPC分类号： A61B5/0215

CPC分类号： A61B5/7221 ,  A61B5/0066 ,  A61B5/02007 ,  A61B5/0215 ,  A61B5/02158 ,  A61B5/026 ,  A61B5/4842 ,  A61B5/6851 ,  A61M2025/0002

摘要： Methods and systems for calculating a corrected Fractional Flow Reserve. Methods include delivering a pressure sensing device including a pressure sensor to a location in an artery having a stenosis, positioning the pressure sensor distal to the stenosis, measuring the distal pressure, measuring the proximal pressure, and calculating a corrected Fractional Flow Reserve using the measured proximal and distal pressures and applying a correction factor or correction equation. The correction factor or correction equation corrects for changes in the measured distal pressure caused by a presence of the pressure sensing device. A data set of correction factors or correction equations may be stored in a memory component of the system. The corrected Fractional Flow reserve may approximate the Fractional Flow Reserve that would be obtained if a different sized device was used to measure the distal pressure, such as a pressure sensing guidewire having a 0.014 inch outer diameter.

摘要翻译： 用于计算校正分数流量储备的方法和系统。 方法包括将包括压力传感器的压力感测装置递送到具有狭窄的动脉中的位置，将压力传感器远离狭窄定位，测量远端压力，测量近端压力，以及使用所测量的近端压力计算校正的分数流量储备 近端和远端压力，并应用校正因子或校正方程。 校正因子或校正方程校正由压力感测装置的存在引起的测量的远端压力的变化。 校正因子或校正方程的数据集可以存储在系统的存储器组件中。 校正的分数流量储备可以接近如果使用不同尺寸的装置来测量远端压力将获得的分数流量储备，例如具有0.014英寸外径的压力感测导线。

公开(公告)号：US09259161B2

公开(公告)日：2016-02-16

申请号：US13469485

申请日：2012-05-11

申请人： Todd M. Suchecki ,  Alan K. Evans

发明人： Todd M. Suchecki ,  Alan K. Evans

IPC分类号： A61B5/02 ,  A61B5/0215 ,  A61B5/026 ,  A61B5/00 ,  A61M25/00

CPC分类号： A61B5/7221 ,  A61B5/0066 ,  A61B5/02007 ,  A61B5/0215 ,  A61B5/02158 ,  A61B5/026 ,  A61B5/4842 ,  A61B5/6851 ,  A61M2025/0002

摘要： Methods and systems for calculating a corrected Fractional Flow Reserve. Methods include delivering a pressure sensing device including a pressure sensor to a location in an artery having a stenosis, positioning the pressure sensor distal to the stenosis, measuring the distal pressure, measuring the proximal pressure, and calculating a corrected Fractional Flow Reserve using the measured proximal and distal pressures and applying a correction factor or correction equation. The correction factor or correction equation corrects for changes in the measured distal pressure caused by a presence of the pressure sensing device. A data set of correction factors or correction equations may be stored in a memory component of the system. The corrected Fractional Flow reserve may approximate the Fractional Flow Reserve that would be obtained if a different sized device was used to measure the distal pressure, such as a pressure sensing guidewire having a 0.014 inch outer diameter.

摘要翻译： 用于计算校正分数流量储备的方法和系统。 方法包括将包括压力传感器的压力感测装置递送到具有狭窄的动脉中的位置，将压力传感器远离狭窄定位，测量远端压力，测量近端压力，以及使用所测量的近端压力计算校正的分数流量储备 近端和远端压力，并应用校正因子或校正方程。 校正因子或校正方程校正由压力感测装置的存在引起的测量的远端压力的变化。 校正因子或校正方程的数据集可以存储在系统的存储器组件中。 校正的分数流量储备可以接近如果使用不同尺寸的装置来测量远端压力将获得的分数流量储备，例如具有0.014英寸外径的压力感测导线。

公开(公告)号：US20120204997A1

公开(公告)日：2012-08-16

申请号：US13115719

申请日：2011-05-25

申请人： Charles L. Winn ,  Todd M. Suchecki ,  Mohd Touhid Khan

发明人： Charles L. Winn ,  Todd M. Suchecki ,  Mohd Touhid Khan

IPC分类号： B65B3/04

CPC分类号： A61M5/007 ,  A61M5/14546 ,  A61M2005/3114 ,  A61M2205/14

摘要： Embodiments of the present invention monitor resistance to the movement of the ram and detect one or more injector operation conditions based on that resistance. Some embodiments automatically detect whether a syringe is present in each syringe chamber of an injector based on ram movement resistance so that subsequent steps in the inject process can be automatically initiated or delayed based on the presence or absence of the syringe(s). Other injector operation conditions that can be detected include the injector's syringe sleeve being misaligned for operation, the syringe's wiper being misaligned within the syringe barrel, an occlusion within the syringe, overpressure during injection, and so on. A common way to measure resistance of the ram's movement is how much current is required by the motor driving the ram.

摘要翻译： 本发明的实施例监测对冲头运动的阻力，并基于该阻力检测一个或多个喷射器操作条件。 一些实施例基于压头运动阻力自动检测注射器是否存在于注射器的每个注射器室中，使得可以基于注射器的存在或不存在来自动启动或延迟注射过程中的后续步骤。 可以检测的其他注射器操作条件包括注射器的注射器套筒不对齐用于操作，注射器的擦拭器在注射器筒内不对准，注射器内的闭塞，注射期间的超压等等。 衡量压头运动阻力的常用方法是驱动冲头的电机需要多少电流。