Abstract: An example introducer is disclosed. An example introducer includes an inner liner including a lumen, a distal region and at least one folded portion extending along the distal region. The introducer also includes a reinforcing member having a length and including at least one spine extending along the length of the reinforcing member. The introducer also includes a sheath disposed along at least a portion of the introducer, wherein the sheath includes at least one perforation, wherein material adjacent to the at least one folded portion is removed from a distal portion of the introducer to form a tip region. The introducer also includes a tip member disposed along the tip region.

Abstract: A fluid delivery and mixing method and apparatus for mixing at least two fluids wherein the fluids are stored under pressure in separate accumulators and are supplied substantially simultaneously to a mixing chamber, the pressure decay characteristics of each of the accumulators being controlled to have substantially the same shape. The characteristics of the fluid components, the size of the input ports to the mixing chamber and the pre-determined pressures to which the fluids in the accumulators are charged being selected so that the ratio of the flow rates by weight of the fluids at the input ports is a constant and so that the momenta of the fluids at the input ports are equal.