A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 25/00 (2006.01)
Patent
CA 2371798
The present invention features a composite catheter comprising an elongate outer member and an elongate inner member positioned within the outer member so that the inner and outer members define an interstitial space. The outer member has a size and other characteristics that facilitate handling and implantation of the composite catheter, while the inner diameter of the inner member has the size and other characteristics suitable for delivery of a drug through a lumen of the inner member. The interstitial space imparts flexibility to the composite catheter by, for example, removing material from the cross-sectional area that would otherwise provide additional stiffness to the catheter, and/or by accommodating movement of the outer member relative to the inner member.
Cette invention se rapporte à un cathéter composite, qui comprend un élément externe allongé et un élément interne allongé placé dans l'élément externe, de telle sorte que ces éléments, interne et externe, forment un espace interstitiel. L'élément externe possède une taille et d'autres caractéristiques qui facilitent la manipulation et l'implantation du cathéter composite, tandis que le diamètre interne de l'élément interne présente une dimension et d'autres caractéristiques propres à l'acheminement d'un médicament à travers le passage de l'élément interne. L'espace interstitiel de ce cathéter composite lui confère flexibilité, notamment par le fait qu'on en a retiré le matériau de la zone de section transversale qui autrement lui conférerait une rigidité supplémentaire et/ou par le fait que l'élément externe peut se déplacer par rapport à l'élément interne.
Gillis Edward M.
Theeuwes Felix
Durect Corporation
Fetherstonhaugh & Co.
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