Catheter with cutting heads

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/22 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2596319

A catheter (100,200,300,500) including an elongate body (102,202,302,502) , a first cutting head (110,210,310,510) and a second cutting head (116,216,316,516) both having a blade (112, 212, 312, 512; 118, 218, 318, 518) , where the blades move relative each other to provide a shearing action for cardiac tissue. The catheter can further include a stent (238,338,538) positioned over an inflatable balloon (236,336,536) , where the inflatable balloon can deploy the expandable stent over sheared cardiac tissue. The catheter can further be included in a system having a sheath (446) , where at least a part of the catheter resides in the lumen (448) of the sheath. The sheath further includes a cardiac valve (454) and an expandable filter (470) . The sheath can move relative to the cardiac valve and the expandable filter to deploy the cardiac valve and at least a portion of the expandable filter proximal to the inflatable balloon and the expandable stent.

La présente invention concerne un cathéter (100, 200, 300, 500) comprenant un corps allongé (102, 202, 302, 502), une première tête de coupe (110, 210, 310, 510) et une seconde tête de coupe (116, 216, 316, 516) comportant toutes les deux une lame (112, 212, 312, 512 ; 118, 218, 318, 518), lesdites lames se déplaçant l~une par rapport à l~autre pour fournir une action de cisaillement pour le tissu cardiaque. Le cathéter peut en outre comprendre un stent (238, 338, 538) placé sur un ballonnet gonflable (236, 336,536) qui peut déployer le stent expansible sur le tissu cardiaque cisaillé. Le cathéter peut en outre être compris dans un système ayant une gaine (446), avec au moins une partie du cathéter résidant dans la lumière (448) de la gaine. La gaine comprend en outre une valve cardiaque (454) et un filtre expansible (470) par rapport auxquels elle peut se déplacer pour déployer la valve cardiaque et au moins une partie du filtre expansible de manière proximale au ballonnet gonflable et au stent expansible.

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