Device for distal protection and treatment of blood vessels

Details Device for distal protection and treatment of blood vessels Device for distal protection and treatment of blood vessels

A - Human Necessities

61

N

A61N 5/067 (2006.01)

Patent

CA 2537235

Light generating devices for illuminating portions of vascular tissue to administer photodynamic therapy, and usable with, or including a distal protection device. A first device includes a hollow tip, a flushing lumen, a guidewire lumen, and at least one of a light source, and a hollow light transmissive shaft that is adapted to accommodate a light source. If desired, the device can include a balloon, so that a portion of a body lumen between the balloon and the distal protection device is isolated when the balloon is inflated. A second device includes inner and outer catheters, the outer catheter including a balloon, and the inner catheter including a light source and distal protection device comprising a shape memory polymer. Yet another device is a catheter having two balloons and a sleeve extending therebetween. Within the sleeve, the catheter includes a light source and an expanding member.

L'invention concerne des dispositifs générateurs de lumière destinés à illuminer des portions de tissus vasculaires afin d'administrer une thérapie photodynamique et lesquels sont utilisables avec ou comprennent un dispositif de protection distal. Un premier dispositif comprend une extrémité creuse, une lumière affleurante, une lumière de fil-guide ainsi qu'une source de lumière et/ou une tige creuse transmettant la lumière adaptée pour recevoir une source de lumière. Si désiré, le dispositif peut comprendre un ballonnet de manière qu'une partie de la lumière du corps entre le ballonnet et le dispositif de protection distal est isolée lorsque le ballonnet est gonflé. Un second dispositif comprend des cathéters intérieur et extérieur, le cathéter extérieur comprenant un ballonnet et le cathéter intérieur comprenant une source de lumière ainsi qu'un dispositif de protection distal comprenant un polymère à mémoire de forme. Un autre dispositif est un cathéter présentant deux ballonnets entre lesquels s'étend un manchon. A l'intérieur du manchon, le cathéter comprend une source de lumière et un élément de dilatation.

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