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102 条记录 (耗时 0.03 秒)

    Cardiac assist device using field controlled fluid
    1.
    发明授权
    Cardiac assist device using field controlled fluid 失效
    使用现场控制流体的心脏辅助装置

    公开(公告)号：US06251061B1

    公开(公告)日：2001-06-26

    申请号：US09149941

    申请日：1998-09-09

    申请人： Roger N. Hastings ,  Bruce Persson ,  Dnyanesh Talpade ,  Daniel M. LaFontaine

    发明人： Roger N. Hastings ,  Bruce Persson ,  Dnyanesh Talpade ,  Daniel M. LaFontaine

    IPC分类号： A61F202

    CPC分类号： A61M1/1055 ,  A61M1/1068 ,  A61M1/1086 ,  A61M1/12 ,  A61M2205/33 ,  A61M2205/3303

    摘要： A cardiac assist device and method of use for assisting the function of a heart. The assist device includes a compressor positioned against the epicardial wall of the heart and a field generator for driving a fluid coupled to the compressor to exert pressure on the heart. The field generator may be a magnetic field generator and the fluid coupled to the compressor may be a ferrofluid. The compressor may include two containment regions containing ferrofluid on opposite sides of the heart, and a pair of compression portions coupled to the containment regions. The filled generator may be electromagnetic which includes two electromagnets having corresponding core portions and corresponding coils. The electromagnets may be disposed with their north and south poles in alignment and separated by a gap to allow relative movement. The electromagnets may be external or internal to the body.

    摘要翻译： 一种用于辅助心脏功能的心脏辅助装置和方法。 所述辅助装置包括抵靠心脏心外壁的压缩机和用于驱动与压缩机相连的流体以对心脏施加压力的场发生器。 场发生器可以是磁场发生器，并且耦合到压缩机的流体可以是铁磁流体。 压缩机可以包括在心脏的相对侧上包含铁磁流体的两个容纳区域和耦合到容纳区域的一对压缩部分。 填充发电机可以是电磁的，其包括具有对应的芯部分和相应线圈的两个电磁体。 电磁铁可以配置成使它们的北极和南极对齐并且被间隙分开以允许相对运动。 电磁铁可以是外部的或内部的。

    Method for percutaneous coronary artery bypass
    3.
    发明授权
    Method for percutaneous coronary artery bypass 失效
    经皮冠状动脉搭桥方法

    公开(公告)号：US06253769B1

    公开(公告)日：2001-07-03

    申请号：US09391112

    申请日：1999-09-07

    申请人： Daniel M. LaFontaine ,  Kent D. Harrison ,  Charles L. Euteneuer ,  Roger N. Hastings ,  Lixiao Wang

    发明人： Daniel M. LaFontaine ,  Kent D. Harrison ,  Charles L. Euteneuer ,  Roger N. Hastings ,  Lixiao Wang

    IPC分类号： A61B1900

    CPC分类号： A61F2/82 ,  A61B17/32053 ,  A61B2017/00243 ,  A61B2017/00252 ,  A61B2017/1135 ,  A61B2017/306 ,  A61B2090/3929 ,  A61B2090/3945 ,  A61B2090/3958 ,  A61F2/06 ,  A61F2/064 ,  A61F2/90 ,  A61F2/958 ,  A61F2250/0098 ,  Y10S623/902

    摘要： A percutaneous system for bypassing a restriction in an artery of a mammal having an aorta includes providing a graft having a body portion with a first end, a second end and a lumen therebetween. First and second expandable stents are provided at the first and second ends of the graft, respectively. Apertures are formed in the artery, distal of the restriction, and in the aorta and the graft is inserted between the apertures. At least a portion of the first stent is inserted through the aperture in the artery and the stent is deployed to connect the first end of the graft within the artery. The second stent is positioned such that a first expandable portion is outside the aorta and a second expandable portion is within the aorta. The first and second expandable portions of the second stent are expanded to have outer diameters at least as large as the aperture in the aorta to anchor the first end of the graft in the aorta such that the lumen in the graft communicates with the aorta and the artery.

    摘要翻译： 用于绕过具有主动脉的哺乳动物的动脉中的限制的经皮系统包括提供具有主体部分的移植物，其具有第一端，第二端和内腔。 第一和第二可扩张支架分别设置在移植物的第一和第二端。 孔径形成在动脉的远端，在主动脉的远侧，移植物插入孔之间。 第一支架的至少一部分插入通过动脉中的孔，并且支架被展开以将移植物的第一端连接在动脉内。 第二支架定位成使得第一可膨胀部分在主动脉外侧，第二可膨胀部分在主动脉内。 第二支架的第一和第二可膨胀部分被扩张以具有至少与主动脉中的孔相同的外径，以将移植物的第一端锚定在主动脉中，使得移植物中的内腔与主动脉连通，并且 动脉。

    Leadless cardiac stimulation systems
    6.
    发明授权
    Leadless cardiac stimulation systems 有权
    无铅心脏刺激系统

    公开(公告)号：US08332036B2

    公开(公告)日：2012-12-11

    申请号：US11683584

    申请日：2007-03-08

    申请人： Roger N. Hastings ,  William J. Drassler ,  Daniel M. Lafontaine ,  Scott R. Smith ,  Anupama Sadasiva

    发明人： Roger N. Hastings ,  William J. Drassler ,  Daniel M. Lafontaine ,  Scott R. Smith ,  Anupama Sadasiva

    IPC分类号： A61N1/05 ,  A61N1/37 ,  A61N1/08

    CPC分类号： A61N1/3756 ,  A61N1/0587 ,  A61N1/059 ,  A61N1/08 ,  A61N1/3627 ,  A61N1/365 ,  A61N1/37205 ,  A61N1/37217 ,  A61N1/37223 ,  A61N1/37229 ,  A61N1/37241 ,  A61N1/37288 ,  A61N1/375 ,  A61N1/3787

    摘要： Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. In one example, a system that provides multiple sites for pacing of myocardium of a heart includes wireless pacing electrodes that are implantable at sites proximate the myocardium using a percutaneous, transluminal, catheter delivery system. Each of the electrodes contains a source of electrical energy for pacing the myocardium and is adapted to receive electromagnetic energy from a source outside the myocardium. The system also includes a source adapted for placement outside the myocardium and that uses locally measured electrocardiograms to synchronize pacing of the heart by sending electromagnetic commands to the electrodes to pace the myocardium surrounding the electrodes. Also disclosed is various configurations of such systems, wireless electrode assemblies, and delivery catheters for delivering and implanting the electrode assemblies.

    摘要翻译： 提供了使用无引线电极来提供起搏治疗的各种构造的系统。 在一个示例中，提供用于心脏心肌的多个部位的系统包括使用经皮，经腔，导管递送系统可植入位于心肌附近的位置的无线起搏电极。 每个电极包含用于起搏心肌的电能源，并且适于从心肌外部的源接收电磁能。 该系统还包括适于放置在心肌外部的源，并且使用局部测量的心电图来通过向电极发送电磁命令来同步心脏的起搏，以对电极周围的心肌进行加速。 还公开了用于递送和植入电极组件的这种系统，无线电极组件和输送导管的各种配置。

    Percutaneous myocardial revascularization
    7.
    发明授权
    Percutaneous myocardial revascularization 失效
    经皮心肌血运重建

    公开(公告)号：US07832406B2

    公开(公告)日：2010-11-16

    申请号：US11191056

    申请日：2005-07-28

    申请人： Louis Ellis ,  Daniel M. Lafontaine ,  Roger N. Hastings ,  Lauri DeVore

    发明人： Louis Ellis ,  Daniel M. Lafontaine ,  Roger N. Hastings ,  Lauri DeVore

    IPC分类号： A61B19/00 ,  A61B18/18

    CPC分类号： A61B17/3207 ,  A61B18/1492 ,  A61B90/39 ,  A61B2017/00247 ,  A61B2017/22077 ,  A61B2017/3488 ,  A61B2018/00273 ,  A61B2018/00291 ,  A61B2018/00392 ,  A61B2018/144 ,  A61B2090/395 ,  A61M2210/125

    摘要： Devices and methods for creating a series of percutaneous myocardial revascularization (PMR) channels in the heart. One method includes forming a pattern of channels in the myocardium leading from healthy tissue to hibernating tissue. Suitable channel patterns include lines and arrays. One method includes anchoring a radiopaque marker to a position in the ventricle wall, then using fluoroscopy repeatedly to guide positioning of a cutting tip in the formation of multiple channels. Another method uses radiopaque material injected into each channel formed, as a marker. Yet another method utilizes an anchorable, rotatable cutting probe for channel formation about an anchor member, where the cutting probe can vary in radial distance from the anchor. Still another method utilizes a multiple wire radio frequency burning probe, for formation of multiple channels simultaneously. Still another method utilizes liquid nitrogen to cause localized tissue death.

    摘要翻译： 在心脏中创建一系列经皮心肌血运重建（PMR）通道的装置和方法。 一种方法包括在从健康组织导向冬眠组织的心肌中形成通道图案。 合适的渠道模式包括线和阵列。 一种方法包括将不透射线标记物固定在心室壁中的位置，然后重复使用荧光透视来引导切割尖端在形成多个通道中的定位。 另一种方法使用注射到形成的每个通道中的不透射线材料作为标记。 另一种方法利用可锚定的，可旋转的切割探针，用于围绕锚定构件的通道形成，其中切割探针可以与锚固件的径向距离变化。 另一种方法是利用多线射频燃烧探头，同时形成多个通道。 另一种方法利用液氮引起局部组织死亡。