Patent ID: 8152758
Filing Date: 2012-04-10
Classification: A61F,A61M

Abstract:
1. An apparatus comprising: an expandable body having dimensions suitable for percutaneous delivery; at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body; a needle disposed in the lumen of the at least one delivery cannula, the needle comprising a body portion having a protuberance thereon and a delivery end distal to the protuberance; a first stop disposed in the lumen of the at least one delivery cannula at a position distal to the protuberance on the needle, the first stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance; and a second stop disposed in the lumen of the at least one delivery cannula at a position proximal to the protuberance on the needle, the second stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance, wherein the lumen of the at least one delivery cannula has a cross-sectional shape between the first stop and the second stop that is different than a cross-sectional shape of the lumen at a point proximal to the second stop and the protuberance on the needle conforms to the shape of the lumen of the at least one delivery cannula between the first stop and the second stop in a manner to prescribe an orientation of the needle within a distal portion of the at least one delivery cannula.