Patent ID: 8696696
Filing Date: 2014-04-15
Classification: A61B,A61F,A61L

Abstract:
1. A tissue cutting device configured to reduce undesired signal transmission in a heart tissue in order to treat arrhythmia, wherein: the device is structured and arranged to be inserted in a temporary delivery shape through the vascular system and at least partly be positioned into said atrium that is intended to be treated and to be subsequently subjected to a change of shape, from said temporary delivery shape via an expanded delivered shape to a further expanded shape, extending at least beyond an outer surface of said atrial tissue, said tissue cutting device is configured to create cutting action for cutting of said heart tissue including said atrium, and wherein said tissue cutting device is structured and arranged to penetrate a wall of said heart tissue by said cutting action, in such a manner that a cut of said tissue created by said cutting action is continuously replaced by scar tissue that does not conduct electrical signals to isolate ectopic sites of said heart tissue causing said arrhythmia, the device is combined with a tubular part structured and arranged to be inserted in a temporary delivery shape through the vascular system into a body vessel adjacent to the heart, and to be subsequently subjected to a change of shape, from said temporary delivery shape via an expanded delivered shape to a further expanded shape, extending at least beyond an outer surface of a tissue surrounding said body vessel, in order to create said cutting action configured for cutting said heart tissue and/or a cutting action configured for cutting said tissue surrounding said body vessel, the tubular part of said device comprises a plurality of segments connected to each other in a longitudinal direction of said tubular part of said device, a first segment of said plurality of segments has a dimension in a direction perpendicular to said longitudinal direction of said tubular part of said device that is larger than that dimension of a second segment thereof, at least in said expanded delivered shape, said device further comprises at least one cutting arm being structured and arranged to initially extend substantially perpendicular to said longitudinal direction from the tubular part of said tissue cutting device in order to be inserted into a heart atrium wall and said cutting arm being structured and arranged to change shape to extend radially from the tubular part of said tissue cutting device.