Patent ID: 7384422
Filing Date: 2008-06-10
Classification: A61M,A61N

Abstract:
1. An introducer telescopically disposable in an elongate, outer introducer for use in introducing an endovascular instrument comprising: a longitudinally separable, inner sheath disposable through the outer introducer, the inner sheath having a prebiased shape of its distal portion for navigation into the coronary sinus branch veins, wherein the inner sheath is arranged and configured to allow introduction of the endovascular instrument into a selected location within the coronary sinus branch veins where the inner sheath comprises a proximal flexible unbiased portion and where the distal portion, which has a shape for optimally steering the inner sheath into a selected branch of the coronary sinus venous system of the heart, wherein the distal shape is characterized by a single radius of curvature and a distal most straight portion, and wherein the inner sheath has a longitudinal axis and the single radius of curvature and relative length of the distal precurved portion are such that an open curve is obtained, an open curve being defined as having an angle between the direction of the longitudinal axis of the proximal portion of the inner sheath where it joins the precurved portion and the direction of the longitudinal axis at a distal end of the precurved portion of the inner sheath of more than 90°, the proximal portion and distal portion lying in a common plane.