Patent ID: 9192499
Filing Date: 2015-11-24
Classification: A61F

Abstract:
1. A self-expanding medical device delivery system, comprising: an outer sheath extending from a proximal portion to a distal portion, said proximal portion being adapted to be attached to a deployment handle and remain outside of a patient's body, said distal portion being adapted to be positioned within said patient's body; a self-expanding medical device disposed within said distal portion of said outer sheath, said self-expanding medical device being in a compressed state and exerting an outward force against said outer sheath, wherein said outer sheath restrains said medical device from expanding; and an inner catheter disposed within said outer sheath and extending from adjacent a proximal end of said medical device to said deployment handle, said inner catheter comprising a stop surface adapted to abut said proximal end of said medical device; wherein said inner catheter comprises a closed coil wire with one or more helically wound wires, said one or more wires each having an elliptical or round cross-section, and an outer surface along a length of said closed coil wire comprising a wave-like pattern defined by said elliptical or round cross-section, a polymer inner layer being adhered to an inner diameter of said closed coil wire, and no outer layer being adhered to an outer diameter of said closed coil wire, said wave-like pattern thereby being exposed to an inner diameter of said outer sheath.