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Ronnie D Richards

Brack G Hattler

William J Horgan

A venous catheter having a central flexible lumen with a formed fluid passageway therein and a plurality of collapsible lumens mounted around the periphery of the central flexible lumen also having formed fluid passageways therein. The central flexible lumen being formed of material which is capable of retaining its shape with or without fluid flowing therethrough. Each collapsible lumen being formed from material which is normally collapsed in a small cross-sectional area and which is further capable of expanding when fluid is flowing therein to a cross-sectional area much greater than that when collapsed. The catheter being capable of being inserted through the center of an insertion needle in the collapsed state into the vein of a patient.

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Arvada, CO, United States of America

Ronnie D Richards