Patent ID: 8702649
Filing Date: 2014-04-22
Classification: A61M

Abstract:
1. A catheter for introducing more than one fluid into a fluid stream, the more than one fluid comprising a first fluid and a second fluid, wherein the catheter comprises: (a) a catheter body comprising a distal tip defining a distal end, wherein the catheter body defines at least a first lumen and a second lumen; (b) a first set of holes in said distal tip leading to the first lumen to deliver the first fluid into the fluid stream, said first set of holes proximal of said distal end; (c) a second set of holes in said distal tip leading to the second lumen to deliver the second fluid into the fluid stream, said second set of holes proximal of said distal end; (d) an annular structure on an outside surface of said distal tip and located between said first set of holes and said second set of holes; and (e) wherein said first set of holes is distal of said second set of holes and the first fluid has a higher viscosity than the second fluid, such that delivery of metered volumes of the first fluid and the second fluid maintains a bolus of the first fluid by minimizing mixing of the first fluid and the second fluid due to the viscosity differences.