Occluding vasculature of a patient using embolic coil with improved platelet adhesion
First Claim
1. A embolic coil formed of a platinum alloy wire and having a proximal portion which is adopted to be held by a detachment portion of an introducer and a distal portion, the proximal portion which is adopted to be held by a detachment portion of an introducer having a relatively smooth surface as compared to the surface of the distal portion and the distal portion having a relatively textured surface as compared to the smooth surface of the proximal portion, whereby when said embolic coil is implanted in a patient'"'"'s vasculature, the textured surface provides improved platelet adhesion compared to a non-textured surface, to promote clotting.
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Accused Products
Abstract
A method as provided for occluding the vasculature of a patient. The method comprises the steps of providing a plurality of embolic coils having a textured surface. The embolic coils are introduced into the patient'"'"'s vasculature. In this manner, the textured surface provides improved platelet adhesion compared to a non-textured surface, to promote clotting. In the illustrative embodiment, the embolic coil comprises a platinum-tungsten alloy wire and the texturing is performed by abrasion or sandblasting to provide substantially uniform roughness comprising pockets having diameters of about 0.125 microns to about fifty microns and depths of about 0.25 microns to about twenty microns.
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Citations
17 Claims
- 1. A embolic coil formed of a platinum alloy wire and having a proximal portion which is adopted to be held by a detachment portion of an introducer and a distal portion, the proximal portion which is adopted to be held by a detachment portion of an introducer having a relatively smooth surface as compared to the surface of the distal portion and the distal portion having a relatively textured surface as compared to the smooth surface of the proximal portion, whereby when said embolic coil is implanted in a patient'"'"'s vasculature, the textured surface provides improved platelet adhesion compared to a non-textured surface, to promote clotting.
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3. A method for occluding the vasculature of a patient, comprising the steps of:
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providing an introducer having a detachment portion for holding and releasing an embolic coil;
providing a plurality of embolic coils having a proximal portion that is held by said detachment portion and a distal portion, the proximal portion that is held by said detachment portion having a relatively smooth surface as compared to the surface of the distal portion and the distal portion having a relatively textured surface as compared to the smooth surface of the proximal portion;
introducing said plurality of embolic coils into the patients vasculature, using said introducer that is coupled to the proximal portion, whereby the textured surface provides improved platelet adhesion compared to a non-textured surface, to promote clotting. - View Dependent Claims (4, 5, 6, 9, 10)
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12. A method for treating an aneurysm of a patient, comprising the steps of:
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providing an introducer having a detachment portion for holding and releasing an embolic coil;
providing a plurality of embolic coils having a proximal portion that is held by said detachment portion and a distal portion, the proximal portion that is held by said detachment portion having a relatively smooth surface as compared to the surface of the distal portion and the distal portion having a relatively textured surface as compared to the smooth surface of the proximal portion;
introducing said plurality of embolic coils into the patient'"'"'s aneurysm, using said introducer that is coupled to the proximal portion, whereby the textured surface provides improved platelet adhesion compared to a non-textured surface, to promote clotting. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification