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    Laser extractor for an implanted object
    1.
    发明专利
    Laser extractor for an implanted object 未知

    公开(公告)号：AU683502B2

    公开(公告)日：1997-11-13

    申请号：AU7962994

    申请日：1994-10-03

    Applicant: MEDTRONIC INC

    Inventor： WAHLSTROM DALE A ,  WILLIAMS TERRELL M

    IPC: A61B18/20 ,  A61B17/00 ,  A61B17/22 ,  A61B17/50 ,  A61B18/24 ,  A61B19/00 ,  A61N1/05 ,  A61B17/36

    Abstract: A lead extraction device which utilizes laser light to separate an implanted object, such as a pacemaker lead, from fibrous scar tissue and thereby permit the implanted object to be extracted from a body. The extraction device features a catheter having a central lumen. The lumen is preferably dimensioned so a pacemaker lead will fit within. The catheter is thereby guided by the lead. The catheter has at least one optical fiber to emit laser light from the distal end and thereby separate the lead from fibrous scar tissue. Disclosed embodiments include catheters which emit light parallel as well as inwardly perpendicular to the catheter and the lead. Through such catheters the lead may be separated along its length, as well as separated at its distal end from fibrous scar tissue, thereby permitting the lead to be readily extracted from the body.

    Laser extractor for an implanted object
    3.
    发明专利
    Laser extractor for an implanted object 未知

    公开(公告)号：AU7962994A

    公开(公告)日：1995-05-01

    申请号：AU7962994

    申请日：1994-10-03

    Applicant: MEDTRONIC INC

    Inventor： WAHLSTROM DALE A ,  WILLIAMS TERRELL M

    IPC: A61B18/20 ,  A61B17/00 ,  A61B17/22 ,  A61B17/50 ,  A61B18/24 ,  A61B19/00 ,  A61N1/05 ,  A61B17/36

    Abstract: A lead extraction device which utilizes laser light to separate an implanted object, such as a pacemaker lead, from fibrous scar tissue and thereby permit the implanted object to be extracted from a body. The extraction device features a catheter having a central lumen. The lumen is preferably dimensioned so a pacemaker lead will fit within. The catheter is thereby guided by the lead. The catheter has at least one optical fiber to emit laser light from the distal end and thereby separate the lead from fibrous scar tissue. Disclosed embodiments include catheters which emit light parallel as well as inwardly perpendicular to the catheter and the lead. Through such catheters the lead may be separated along its length, as well as separated at its distal end from fibrous scar tissue, thereby permitting the lead to be readily extracted from the body.

    LASER EXTRACTOR FOR AN IMPLANTED OBJECT
    5.
    发明专利
    LASER EXTRACTOR FOR AN IMPLANTED OBJECT 未知

    公开(公告)号：CA2172051A1

    公开(公告)日：1995-04-13

    申请号：CA2172051

    申请日：1994-10-03

    Applicant: MEDTRONIC INC

    Inventor： WILLIAMS TERRELL M ,  WAHLSTROM DALE A

    IPC: A61B18/20 ,  A61B17/00 ,  A61B17/22 ,  A61B17/50 ,  A61B18/24 ,  A61B19/00 ,  A61N1/05 ,  A61B17/36

    Abstract: A lead extraction device which utilizes laser light to separate an implanted object, such as a pacemaker lead, from fibrous scar tissue and thereby permit the implanted object to be extracted from a body. The extraction device features a catheter having a central lumen. The lumen is preferably dimensioned so a pacemaker lead will fit within. The catheter is thereby guided by the lead. The catheter has at least one optical fiber to emit laser light from the distal end and thereby separate the lead from fibrous scar tissue. Disclosed embodiments include catheters which emit light parallel as well as inwardly perpendicular to the catheter and the lead. Through such catheters the lead may be separated along its length, as well as separated at its distal end from fibrous scar tissue, thereby permitting the lead to be readily extracted from the body.

    ISOLATED PERFUSED HEART PREPARATION AND METHOD OF USE
    8.
    发明申请
    ISOLATED PERFUSED HEART PREPARATION AND METHOD OF USE 审中-公开
    分离的充满心脏的制备和使用方法

    公开(公告)号：WO0022927A9

    公开(公告)日：2000-10-05

    申请号：PCT/US9924791

    申请日：1999-10-22

    Applicant: MEDTRONIC INC ,  UNIV MINNESOTA

    Inventor： LASKE TIMOTHY GERALD ,  LAIZZO PAUL A ,  HJELLE MARK A ,  MORISSETTE JOSEE ,  WAHLSTROM DALE A

    IPC: A01N1/02

    CPC classification number: A01N1/02 ,  A01N1/0247

    Abstract: An isolated heart preparation in which essentially normal pumping activity of all four chambers of the heart is preserved, allowing for the use of the preparation in conjuction with investigations of electrode leads, catheters, cardiac implants and other medical devices intended to be used in or on a beating heart. The preparation may also be employed to investigate heart functions, in the presence or absence of such medical devices. In order to allow for visualization of heart structures and devices located within the chambers of the heart, a clear perfusate such as a modified Krebs buffer solution with oxygenation is circulated through all four chambers of the heart and the coronary vasculature. The preparation and recordings of the preparation may be used in conjunction with the design, development and evaluation of devices for use in or on the heart, as well as for use as an investigational and teaching aid to assist physicians and students in understanding the operation of the heart.

    Abstract translation: 一种分离的心脏制剂，其中保留了心脏的所有四个腔室的基本上正常的泵送活性，允许使用该制剂结合对电极引线，导管，心脏植入物和旨在用于或在其上使用的其它医疗装置 一个跳动的心脏 在存在或不存在这样的医疗装置的情况下，该制剂也可用于研究心脏功能。 为了允许位于心脏腔室内的心脏结构和装置的可视化，清洁的灌注液例如具有氧合作用的经修饰的克雷伯斯缓冲溶液被循环通过心脏和冠状动脉脉管系统的所有四个腔室。 制剂的准备和记录可以与在心脏或心脏上使用的装置的设计，开发和评估结合使用，以及用作调查和教学辅助以帮助医师和学生理解操作 心脏

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