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33 条记录 (耗时 0.02 秒)

    DEVICE AND METHOD FOR NEEDLE-LESS INTERSTITIAL INJECTION OF FLUID FOR ABLATION OF CARDIAC TISSUE
    14.
    发明公开
    DEVICE AND METHOD FOR NEEDLE-LESS INTERSTITIAL INJECTION OF FLUID FOR ABLATION OF CARDIAC TISSUE 审中-公开
    DEVICE AND METHOD FOR针地段组织液注射心脏组织的消融

    公开(公告)号：EP1592356A1

    公开(公告)日：2005-11-09

    申请号：EP04707072.7

    申请日：2004-01-30

    申请人： MEDTRONIC, INC.

    发明人： JAHNS, Scott, E.

    IPC分类号： A61B18/14

    CPC分类号： A61B18/14 ,  A61B17/3203 ,  A61B2017/00247 ,  A61B2018/00351 ,  A61B2018/00392 ,  A61B2018/00809 ,  A61B2018/1472

    摘要： Methods and apparatus for delivering precise amounts of fluid under pressure into cardiac tissue for the purpose of facilitating ablation of the tissue along a desired lesion line. One method injects fluid under pressure through a discharge orifice in a needle-less injection device. The injected fluid can be a cytotoxic fluid and/or a highly conductive fluid injected in conjunction with radio frequency ablation to create an ablative virtual electrode. The injected fluid can provide deeper and narrower conduction paths and resulting lesions. Radio frequency ablation can be performed at the same time as the fluid injection, using the injection device as an electrode, or subsequent to the fluid injection, using a separate device. In some methods, the injected fluid is a protective fluid, injected to protect tissue adjacent to the desired lesion line. Fluid delivery can be endocardial, epicardial, and epicardial on a beating heart. The present methods find one use in performing maze procedures to treat atrial fibrillation.

    METHODS AND APPARATUS FOR ACCESSING AND STABILIZING AN AREA OF THE HEART
    16.
    发明公开
    METHODS AND APPARATUS FOR ACCESSING AND STABILIZING AN AREA OF THE HEART 审中-公开
    方法和设备访问和稳定性的心脏区域的

    公开(公告)号：EP1589879A1

    公开(公告)日：2005-11-02

    申请号：EP04701236.4

    申请日：2004-01-09

    申请人： MEDTRONIC, INC.

    发明人： BONNER, Matthew, D. ,  PIGNATO, Paul A. ,  JAHNS, Scott, E. ,  USHER, Raymond, W.

    IPC分类号： A61B17/02

    CPC分类号： A61B18/1485 ,  A61B18/1402 ,  A61B46/00 ,  A61B46/23 ,  A61B50/20 ,  A61B2018/00291 ,  A61B2090/306 ,  A61B2090/3614 ,  A61B2218/007 ,  A61M1/008

    摘要： A tubular suction tool (10) for accessing an anatomic surface or anatomic space and particularly the pericardium to access pericardial space and the epicardial surface of the heart to implant cardiac leads (90) in a minimally invasive manner are disclosed. The suction tool incorporates a suction pad (30) concave wall defining a suction cavity, a plurality of suction ports (42) arrayed about the concave wall, and a suction lumen, to form a bleb of tissue into the suction cavity when suction is applied. The suction cavity extends along one side of the suction pad, so that the suction pad and suction cavity can be applied tangentially against a tissue site. The suction tool can incorporate light emission (52) and video imaging of tissue adjacent the suction pad. A working lumen (20) terminating in a working lumen port (46) into the suction cavity enables introduction of tools, cardiac leads, and other instruments, cells, drugs or materials into or through the tissue bleb drawn into the suction cavity.