Patent ID: 8366699
Filing Date: 2013-02-05
Classification: A61M,B29C,B29K,B29L

Abstract:
1. An intravascular catheter comprising: a) a polymeric inner tube having an internal lumen and proximal and distal segments; b) a distal reinforcing jacket including a first helical coiled wire formed of a first material wound over the surface of said distal segment; c) a proximal reinforcing jacket including a second helical coiled wire and a third helical coiled wire, said second helical coiled wire being formed of a second material wound over the surface of said proximal segment and over said first helical coil, said third helical coiled wire being formed of the second material and wound over said second helical coiled wire and said proximal segment, said second helical coiled wire extending distally beyond said third helical coiled wire, such that said distal reinforcing jacket has a first stiffness, said proximal reinforcing jacket has a second stiffness and said first stiffness is relatively lower than said second stiffness, and whereby said first helical coiled wire and said second helical coiled wire overlap to form an intermediate reinforcing jacket having a resulting stiffness approximately halfway between said first stiffness and said second stiffness; d) at least one radiopaque marker formed over said distal segment of said polymeric inner tube, said at least one radiopaque marker including a radiopaque polymer covering; and e) a polymeric outer tube shrink wrapped or extruded over and bonded to said proximal and distal segments of said inner tube of said catheter, said at least one radiopaque marker having cut ends secured over said polymeric inner tube by said radiopaque polymer covering and said polymeric outer tube.