Device, A Kit And A Method For Treatment Of Disorders In The Heart Rhythm Regulation System

A tissue cutting device configured for reduction of undesired signal transmission in heart tissue by isolating ectopic sites thereof by cutting said heart tissue,

• wherein the device is structured and arranged to be inserted in a temporary delivery shape through the vascular system into a body vessel adjacent the heart and/or into the heart and to be subsequently subjected to a change of shape via an expanded delivered shape to a further expanded shape, extending at least beyond an outer surface of said tissue, in order to create cutting action configured for cutting said heart tissue and/or said body vessel, wherein the structure is arranged to penetrate by said cutting action through a wall of said vessel into said heart tissue, wherein the device comprises a transversely expandable tubular part having a cross-section, and wherein during said change of shape said cross-section of said tubular part expands such that said tubular part circumferentially penetrates said heart tissue for said reduction.