Patent ID: 6394142
Filing Date: 2002-05-28
Classification: A61M,F16L

Abstract:
A multi-lumen hose, comprising:a corrugdted peripheral wall including an interior area and having an inner surface which defines a diemeter; at least one substantially planrar inner partition extending from said inner surface across at least half of the diameter of said peripheral wall so as to divide said intertor area into a plurality of lumen, wherein said corrugated wall and substantially planar inner portion are formed by the steps of; forming a hot multi-lumen parison, said parison including a hollow cylindrical peripheral portion with an inner surface defining a diameter of at least one substantially flat planar partition extending from said inner surface and across at least half of the diameter of said peripheral portion, said inner partition dividing an interior area pf said parison into a plurality of lumen; expanding said peripheral portion radially outward to cause said inner partition to expand in width and to decrease in thickness medially and to decrease in thickness greater contiguously to said peripheral portion; and said greater decrease in thickness contiguously to said peripheral portion causing said inner partition to remain substantially planar upon expanding in width during radial expanding of said peripheral portion.