A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/04 (2006.01)
Patent
CA 2628965
Devices and methods used in termination of a tissue tightening procedure are described. Termination includes the cinching of a tether to tighten the tissue, locking the tether to maintain tension, and cutting excess tether. In procedures involving anchors secured to the tissue, the tether is coupled to the anchors and the tissue is tightened via tension applied to the anchors by cinching the tether. In general, the devices and methods can be used in minimally invasive surgical procedures, and can be applied through small incisions or intravascularly. A method for tightening tissue by fixedly coupling a first anchor to a tether and slidably coupling a second anchor to the tether, securing both anchors to the tissue, applying tension to the tether intravascularly, fixedly coupling the tether to the second anchor, and cutting the tether is described. The tissue to be tightened can comprise heart tissue, in particular heart valve annulus tissue. Various devices and methods for locking the tether in place and cutting excess tether are described.
La présente invention concerne des dispositifs et des procédés utilisés afin d~achever une intervention consistant à tendre un tissu. L~achèvement de l~intervention consiste à serrer une attache afin de tendre le tissu, bloquer l~attache en vue de maintenir la tension et couper le surplus d~attache. Lors d~interventions utilisant des ancrages fixés au tissu, l~attache est couplée aux ancrages et le tissu est tendu à l~aide d~une tension appliquée aux ancrages par serrage de l~attache. En général, les dispositifs et les procédés peuvent être employés lors d~interventions chirurgicales peu invasives et appliqués par de petites incisions ou de manière intravasculaire. L~invention a trait à un procédé destiné à tendre un tissu qui consiste à : coupler de manière fixe un premier ancrage à une attache et coupler de manière coulissante un second ancrage à l~attache ; fixer les deux ancrages au tissu ; appliquer une tension à l~attache de manière intravasculaire ; coupler de manière fixe l~attache au second ancrage ; et couper l~attache. Le tissu à tendre peut se composer d~un tissu cardiaque, en particulier un tissu annulaire d~une valvule cardiaque. L~invention se rapporte à divers dispositifs et procédés permettant de bloquer l~attache afin de la maintenir en place et de couper le surplus d~attache.
Calhoun Tenny C.
Starksen Niel F.
Tang Brian
To John
Borden Ladner Gervais Llp
Guided Delivery Systems Inc.
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