Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-05-12
1995-06-06
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604104, 604107, 264DIG48, 264DIG66, 606191, A61M 3100
Patent
active
054218322
ABSTRACT:
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.
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Smith et al., "Stamey Catheter Kit" Radiology 139:230-231, Apr. 1981.
Rosenbaum C. Fred
Stright Jr. Ronald K.
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