Patent ID: 8622931
Filing Date: 2014-01-07
Classification: A61M,B29C,B29K

Abstract:
1. A guidewire comprising: an elongate core wire, the core wire being unground, having a length from a proximal end to a distal end thereof substantially corresponding to a length from a proximal end to a distal end of the guidewire, and having a substantially uniform cross-sectional area along the length thereof; and a thermoplastic material extruded along the core wire and surrounding a portion of the core wire, wherein the thermoplastic material covers only a proximal portion of the core wire and includes a tapered portion, wherein a portion of the core wire not covered with the thermoplastic material is covered with a polymer, the polymer extending from a distal end of the guidewire and terminating along the tapered portion of the thermoplastic material, wherein the polymer comprises an outer layer and an inner layer, and wherein the inner layer has a thickness decreasing from a distal end of the tapered portion to a proximal end of the tapered portion and the outer layer has a thickness remaining constant from the distal end of the tapered portion to the proximal end of the tapered portion.