A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 25/09 (2006.01) A61B 5/00 (2006.01) A61M 25/01 (2006.01)
Patent
CA 2207614
A catheter guidewire having an elongate core wire, an elongate tube defining a tube lumen, the proximal end of the tube being affixed to the distal end of the core wire. The tube has a smooth exterior surface and one or more plug segments filling the tube lumen, each plug segment having a stiffness less than that of the core wire and less than of the proximally preceding plug segment. The proximal end of the proximal most plug segment is affixed to the distal end of the core wire, the distal end of the tube is affixed to the distal most plug segment. A smoothly rounded distal tip extends beyond and is affixed to the distal end of the tube. The tube may be formed of a super-elastic metallic member or formed from a synthetic resin. The tube wall thickness is preferably between 0.002 inches and 0.005 inches.
L'invention concerne un fil-guide composé d'un fil central allongé et d'un tube allongé définissant une lumière, l'extrémité proximale du tube étant fixée à l'extrémité distale du fil central. La surface externe du tube est lisse et sa lumière est munie d'une ou de plusieurs prises, toutes moins rigides que celle du fil central, et de moins en moins rigides plus on s'éloigne de l'extrémité proximale. L'extrémité proximale de la prise la plus proximale est fixée à l'extrémité distale du fil central et l'extrémité distale du tube est fixée à la prise la plus distale. L'extrémité distale du tube se termine par un embout lisse légèrement arrondi. Le tube peut être constitué d'un matériau métallique super-élastique ou de résine synthétique. L'épaisseur de ses parois est idéalement comprise entre 0,002 et 0,005 pouces.
Johanson Mark A.
Noone Michael S.
Medtronic Inc.
Smart & Biggar
LandOfFree
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