公开(公告)号：US20120156073A1

公开(公告)日：2012-06-21

申请号：US13346675

申请日：2012-01-09

Applicant: Nicholas Bryant Haylor ,  Simon Francis Everleigh ,  Rene Werner Ruedi ,  Alexander Lloyd ,  James Gower Johnson Shearn

Inventor： Nicholas Bryant Haylor ,  Simon Francis Everleigh ,  Rene Werner Ruedi ,  Alexander Lloyd ,  James Gower Johnson Shearn

IPC: F04B43/12

CPC classification number: A61M5/1413 ,  A61M5/1415 ,  A61M5/14228 ,  A61M2205/18 ,  A61M2205/50 ,  A61M2205/6045 ,  A61M2205/6081 ,  A61M2205/84 ,  A61M2209/082 ,  E05D7/1061 ,  E05Y2900/132 ,  H05K5/0234

Abstract: In a peristaltic medical infusion pump unit, comprising a peristaltic assembly and a counter surface or anvil facing said peristaltic assembly and provided by the inner surface of a door pivotally mounted on a housing of the unit, the door is readily non-destructively removable and replaceable. In use of the peristaltic pump unit, a flexible resilient tube forming part of a medical fluid delivery line is extended between the peristaltic assembly and the counter surface or anvil provided by the door. The medical fluid delivery line has first and second color coded fittings spaced therealong upstream and downstream of the peristaltic assembly and the region of the housing of the pump unit across which the infusion line is extended is provided, correspondingly spaced above and below the peristaltic assembly with correspondingly color coded support means for these fittings.

Abstract translation: 在蠕动医用输液泵单元中，包括蠕动组件和面对所述蠕动组件的对置表面或砧座，并且由枢转地安装在所述单元的壳体上的门的内表面提供，所述门容易地是非破坏性地可移除和可更换的 。 在蠕动泵单元的使用中，形成医疗流体输送管线的一部分的柔性弹性管在蠕动组件和由门提供的相对表面或砧座之间延伸。 医疗流体输送管线具有在蠕动组件的上游和下游隔开的第一和第二颜色编码的配件，并且提供了输注管线延伸的泵单元的壳体的区域，其相应地在蠕动组件的上方和下方间隔开， 这些配件的相应颜色编码的支撑装置。

公开(公告)号：US6150815A

公开(公告)日：2000-11-21

申请号：US58272

申请日：1998-04-09

Applicant: Dennis Lyle Janzen ,  Douglas George Connell ,  Alexander Lloyd MacKay ,  Qing-San Xiang

Inventor： Dennis Lyle Janzen ,  Douglas George Connell ,  Alexander Lloyd MacKay ,  Qing-San Xiang

IPC: A61B5/055 ,  G01R33/09 ,  G01R33/565 ,  G01V3/00

CPC classification number: B82Y25/00 ,  G01R33/093 ,  G01R33/56563

Abstract: A method of correcting for magnetic field inhomogeneity caused by various factors, such as implanted metal and air/tissue interfaces, in magnetic resonance imaging (MRI) is provided. Geometric distortion due to inhomogeneity in a static magnetic field B.sub.0 is corrected for by addition of a compensation gradient. The compensation gradient is applied in the slice selection direction Z, has a timing substantially identical to the standard frequency encoding gradient G.sub.x, and has an amplitude identical to the slice selection gradient G.sub.z that is applied during the initial RF excitation. Inhomogeneity in an RF field B.sub.1 is compensated for by utilizing an RF coil that is large enough in size as compared with a metal implant to make the volumetric percentage of the metal in the coil insignificant. Inhomogeneity in a gradient field G=(G.sub.x, G.sub.y, G.sub.z) is corrected for by a treatment of the most significant error factor G.sub.z that causes slice thickness error. Specifically, the method acquires two images with complementary slice thickness error by using two pulse sequences with flipped slice selection gradients G.sub.z ; combination of the two images successfully cancels the effect of the slice thickness error. Local dephasive MRI signal loss due to magnetic field inhomogeneity is corrected for by acquisition of two images with positive and negative offset G.sub.z gradient lobes, respectively. The pair of images are combined to cancel the effect of local signal loss error.

Abstract translation: 提供了一种在磁共振成像（MRI）中校正由诸如植入的金属和空气/组织界面等各种因素引起的磁场不均匀性的方法。 通过添加补偿梯度来校正由静态磁场B0中的不均匀性引起的几何畸变。 在切片选择方向Z上施加补偿梯度，具有与标准频率编码梯度Gx基本相同的定时，并且具有与在初始RF激励期间施加的切片选择梯度Gz相同的振幅。 通过利用与金属植入物相比尺寸足够大的RF线圈来补偿RF场B1中的不均匀性，使得线圈中的金属的体积百分比不显着。 通过处理导致切片厚度误差的最显着误差因子Gz来校正梯度场G =（Gx，Gy，Gz）中的不均匀性。 具体地说，该方法通过使用具有翻转切片选择梯度Gz的两个脉冲序列获得具有互补切片厚度误差的两个图像; 两个图像的组合成功地消除了切片厚度误差的影响。 通过获取具有正和负偏移Gz梯度波瓣的两个图像来校正由于磁场不均匀性引起的局部剥夺性MRI信号损失。 这对图像被组合以消除本地信号丢失误差的影响。