Biodegradable polymer/protein based coils for intralumenal...

A - Human Necessities – 61 – F

Patent

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A61F 2/06 (2006.01) A61B 17/12 (2006.01) A61F 2/04 (2006.01) A61M 5/00 (2006.01) A61M 5/24 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01)

Patent

CA 2323151

An endovascular cellular manipulation and inflammatory response are elicited from implantation in a vascular compartment or any intraluminal location of a separable coil comprised at least in part of at least one biocompatible and absorbable polymer or protein and growth factors. Typically a catheter associated with the separable coil is used to dispose the coil into a selected body lumen. The biocompatible and absorbable polymer or protein is thrombogenic. The coil further is comprised at least in part of a growth factor or more particularly a vascular endothelial growth factor, a basic fibroblast growth factor or other growth factors. The biocompatible and absorbable polymer is in the illustrated embodiment at least one polymer selected from the group consisting of polyglycolic acid, poly~glycolic acid/poly-L-lactic acid copolymers, polycaprolactive, polyhydroxybutyrate/hydroxyvalerate copolymers, poly-L-lactide. Polydioxanone, polycarbonates, and polyanhydrides. The biocompatible and absorbable protein is at least one protein selected from the group consisting of collagen fibrinogen, fibronectin, vitronectin, laminin, and gelatin. In one embodiment the coil is composed of the biocompatible and absorbable polymer or protein with a radio-opaque material is disposed thereon. Alternatively, the coil is composed of a radio-opaque material, and the biocompatible and absorbable polymer or protein is disposed thereon. This apparatus may be positioned within intracranial aneurysms or any aneurysm in the body as well as within other body cavities.

L'invention concerne une spirale séparable, constituée en partie d'un polymère ou d'une protéine absorbable et de facteurs de croissance, à implanter dans un compartiment vasculaire ou tout emplacement intraluminal, permettant une manipulation cellulaire endovasculaire et l'induction d'une réponse inflammatoire. Généralement, on utilise un cathéter associé à la spirale séparable pour placer cette dernière dans une lumière du corps sélectionnée. La protéine ou le polymère biocompatible et absorbable est thrombogène. La spirale se compose au moins en partie d'un facteur de croissance, notamment d'un facteur de croissance endothéliale, d'un facteur de croissance des fibroplastes de base ou de tout autre facteur de croissance. Le polymère biocompatible et absorbable est, dans le mode de réalisation présenté, au moins un polymère choisi dans le groupe formé d'acide polyglycolique, de copolymères d'acide poly-L-lactique/poly SIMILAR glycolique, de polycaprolactide, de copolymères de polyhydroxybutyrate/hydroxyvalérate, de poly-L-lactide, de polydioxynone, de polycarbonates et de polyanhydrides. La protéine biocompatible et absorbable est au moins une protéine choisie dans le groupe formé de collagène, fibrinogène, fibronectine, vitronectine, laminine et gélatine. Dans un mode de réalisation, la spirale se compose du polymère ou de la protéine biocompatible et absorbable revêtu(e) d'une substance radio-opaque. Ledit appareil peut être positionné dans des anévrismes intracrâniens ou autre ainsi que dans d'autres cavités du corps.

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