Implantable medical device having a means for positioning it at the precise site of a branching of a blood vessel such as a coronary artery

摘要

The invention relates to an implantable medical device.;This implantable medical device (10) to be implanted at an implantation site comprises a proximal end (P), a central portion (C) and a distal end (D), characterized in that it comprises, at its proximal end (P), at least one means (20) for positioning the implantable device (10) at a precise point of a branching (E) of a blood vessel (V), such as a coronary artery.;The invention provides precise, exact and almost perfect positioning of the implantable medical device 10 such as a stent 11 at the branching E of the blood vessel V to be treated, in order to treat the ostial lesions or stenoses that have been very difficult to treat until now.

主权项

1. An implantable medical device to be implanted at an implantation site, the implantable device having a substantially, radially expandable or deployable cylindrical body with a circumferential surface and defining a longitudinal axis, and comprising a proximal end, a central portion and a distal end, said implantable device being radially expandable or deployable between an unexpanded or undeployed position and an expanded or deployed position, said implantable device having a precise positioning means at at least one of the proximal end, and the distal end, said precise positioning means for positioning the implantable device at a precise point of a branching of a blood vessel, said precise positioning means consisting of one or two closed guide wire loops of a size adapted for the precise passage of a secondary guide or guide wire to be introduced into a secondary branch of said branching of the blood vessel, a main branch of which is reached by a stenosis to be treated, and said one or two closed guide wire loops are substantially located within the circumferential surface at least in said unexpanded or undeployed position; the one or two closed guide wire loops adapted to be located away from a main blood vessel surface in the expanded or deployed position.