A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
128/111
A61B 17/00 (2006.01) A61F 2/01 (2006.01) A61M 25/00 (2006.01) B29C 61/06 (2006.01) B29C 65/02 (2006.01) B29C 71/02 (2006.01) A61B 17/22 (2006.01) A61F 2/00 (2006.01) B29C 35/08 (2006.01) B29C 53/14 (2006.01)
Patent
CA 2029280
This invention relates to a filter for the partial and at least temporary interruption of a vein, comprising a tube made of polytetrafluoroethylene presenting towards its distal end longitudinal notches distributed symmetrically over its periphery and defining flexible bands, and a conduit made of polytetrafluoroethylene inside the tube; the conduit and the tube are joined for example by thermo-welding by their distal ends. A ring made of a radio-opaque material is preferably included between the distal ends during thermo-welding. The flexible bands open out transversely by the conduit sliding in the tube. They have undergone a treatment of thermo-setting, memorizing in the polymeric structure of the tetrafluoroethylene the opened out form and/or a helical form.
Lefebvre Jean-Marie
Sim & Mcburney
LandOfFree
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