A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 25/14 (2006.01) A61M 5/158 (2006.01) A61M 25/00 (2006.01) A61M 25/16 (2006.01)
Patent
CA 2158139
The invention provides a dual lumen catheter (20) comprising outer and inner tube materials (28, 30). A main portion (22) extends axially and has a selected first cross section and includes main portions of the respective outer and inner tube materials which together define an annular intake lumen (32) and a main part of a return lumen (34) contained inside the intake lumen. A transition portion (67) is made up integrally of both the outer and inner tube materials and has a second cross section smaller than the first cross section. The transition portion extends axially from the distal end of the main portion and this can be extended to include a tip portion (65) made up only of outer tube material and which extends axially from the transition portion. The transition portion on its own, or with the tip portion, defines a tip section (26) which is a continuation of said main part of the return lumen to complete the return lumen. A method of manufacturing the catheter is also disclosed.
Gowling Lafleur Henderson Llp
Vas-Cath Incorporated
LandOfFree
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