Abstract: A reversible applicator for an intraluminal endoprosthesis with a pusher, an outer sheath sliding longitudinally relative to this pusher, and an endoprosthesis arranged at it's distal part. A retention element formed by an expandable braid that widens in a bulb shape in the expanded state, integrally joined to the pusher, is arranged longitudinally inside the endoprosthesis that is to be fitted in place. This bulb compresses the proximal part of the endoprosthesis against an inner wall of the sheath in such a way as to allow the endoprosthesis to be retracted inside the sheath.

Abstract: A compound for injecting locally into an intratumoral space of a body made of a mixture of a biocompatible wax, admixed with biocompatible oil. The compound is liquid at a temperature above body temperature but compatible with the life of healthy cells. It exhibits an increasing viscosity with decreasing temperature and becomes a solid close to body temperature. The compound is then metabolized by the human body.

Abstract: A luminal endoprosthesis for treating aneurysms, particularly aneurysms located at an arterial bifurcation. One feature of the endoprosthesis is a tubular armature that can expand radially from a compressed state to an expanded state. A further feature of the endoprosthesis, when in the expanded state, is a lenticular head whom axis coincides with that of the tubular armature, and which can be inserted into an aneurysm pocket. A method of manufacturing such an endoprosthesis is also described.

Abstract: A reversible applicator for an intraluminal endoprosthesis comprising a pusher an outer sheath sliding longitudinally relative to this pusher (13), and an endoprosthesis arranged at its distal part. A retention element formed by an expandable braid that widens in a bulb shape in the expanded state, integrally joined to the pusher, is arranged longitudinally inside the endoprosthesis that is to be fitted in place. This bulb compresses the proximal part of the endoprosthesis (2) against an inner wall of the sheath in such a way as to allow the endoprosthesis to be retracted inside the sheath.

Abstract: A method for controlling the systemic pressure at the end of a cardiac operation wherein a double-balloon catheter is brought, along a single path, close to the junction of a right atrium with a superior and inferior venacavae. The distance between a first and a second balloon is then adjusted so that they are placed at an adequate position in the superior and inferior venacavae respectively. The balloons are inflated and one checks whether a balance between the outputs of the two sides of the heart has been restored. The balloons are deflated when a new equilibrium is established and the catheter is removed along the same path. A double balloon occlusion device especially designed to perform said operation is also described.

Abstract: A modular luminal endoprosthesis consisting of a framework, generally called a stent, and more particularly an endoprosthesis for blood vessels. The framework (6) of this stent comprises a plurality of interconnected layers (8, 10, 12), each of these layers (8, 10, 12) being formed by two plies of metal wires (14), which are respectively dextrogyratory and laevogyratory, and which are interlaced and form a lattice, a plurality of wires (14) of a given layer (8, 10, 12) being integrated in the lattice of at least one of the adjacent layers (8, 10, 12).

Abstract: An endoprosthesis furnished with an armature made of metal wires visible in X-ray medical imaging in which the armature is formed of at least two layers of wires, the wires forming the armature comprising a core made of a radio-opaque material, the interaction between the cores of the wires of the various layers improving the visibility of the said endoprosthesis in X-ray medical imaging.

Abstract: A medical device with metal parts to be introduced into animal or human bodies is rendered visible during RMN imaging by covering the exterior surface of the metal parts with a layer comprising Nickel monoxide. When placed within the electromagnetic field generated by a NMR apparatus, the layer reduces disturbances induced in this field in the vicinity of the metal part. This improvement is chiefly related to endoprostheses for subjects or patients who will be submitted to NMR imaging. In particular, the invention is aimed at luminal endoprostheses comprising a metal frame, as stents.

Abstract: A multilayer braided luminal self-expanding stent (4) for an anatomical conduit (8) comprising a outer braided peripheral stent (10) which is permanently linked to an inner, braided, hemodynamic flow deflector (2) by at least a pair of filaments (12) that make part of a common braided structure.

Abstract: Luminal endoprosthesis formed of a multi-layer braided framework. The framework is devoid of any cover layer, and formed of a plurality of stabilized layers of biocompatible metal wires which are interlaced, forming a lattice, a plurality of wires of a given layer being integrated in the lattice of the adjacent layers. The mechanical characteristics of an outermost layer is so that when in place, the layer applies against a vessel wall, the other layers extending substantially along cylindrical surfaces distinct from the outermost layer so as to form a multi-layer mat which affects the haemodynamic of a flow of blood passing along or through this mat and preventing a growing of plaque.

Abstract: A multilayer braided luminal self-expanding stent (4) for an anatomical conduit (8) comprising a outer braided peripheral stent (10) which is permanently linked to an inner, braided, hemodynamic flow deflector (2) by at least a pair of filaments (12) that make part of a common braided structure.

Abstract: A modular luminal endoprosthesis formed principally of a framework, generally called a stent, and more particularly an endoprosthesis for blood vessels.

Abstract: Intraluminal prosthesis comprising a tubular trunk element (1), which is radially expandable and compressible and which axially has a cavity (2) open at its two ends and divided into several axial channels (7, 8), and at least one branch element (13) which is radially expandable and compressible and which axially has a cavity open at its two ends, being, in its compression position, independent of the trunk element and having, in the expansion position, one end within one of the said axial channels and another end outside the trunk element.

Abstract: A method for manufacture of braided multifilament structures for an endoprosthesis for ramification of an anatomical conduit. The method includes the operation of braiding filaments, made of a matter chosen from among the biocompatible elastic, superelastic and shape-memory materials, around a first mandrel, along the length of the first mandrel whose diameter corresponds to a branch of a base element. The method further includes setting up at least one auxiliary mandrel parallel to the first mandrel. The auxiliary mandrel includes a first end and a second end, of cross-section corresponding to those of a lumen. The first end is inserted in a straight line with the braid in progress, upstream of the braiding point, and the assembly has a cross-section corresponding to that of a trunk of a base element. The method further includes continuing the braiding around the assembly along a length corresponding to at least that of the trunk of a base element.

Abstract: Intraluminal prosthesis comprising a tubular trunk element (1), which is radially expandable and compressible and which axially has a cavity (2) open at its two ends and divided into several axial channels (7, 8), and at least one branch element (13) which is radially expandable and compressible and which axially has a cavity open at its two ends, being, in its compression position, independent of the trunk element and having, in the expansion position, one end within one of the said axial channels and another end outside the trunk element.

Abstract: A self-expanding stent for a medical device to be introduced into a cavity of a human body, is disclosed and includes a radially expandable and axially retractable tubular body (1), characterized in that the tubular body comprises first flexible rigid filaments (2, 3) which are arranged side by side in a number at least equal to two, wound along a first helicoid direction around a longitudinal axis (4) of the tubular body, and second flexible rigid filaments (5, 6) which are arranged side by side in a number at least equal to two, wound along a second helicoid direction opposite to the first, each multiple filament wound in one of the said directions crossing multiple filaments wound in the other direction according to a plaited arrangement. Methods for reproducibly forming the stent of the invention are disclosed.

Abstract: Applicator for luminal endoprostheses Device for medical use, in particular device for positioning a radially extendable luminal endoprosthesis (1) in an anatomical conduit, the device comprising a tubular sheath and having a distal end (4) and a proximal end (5), the sheath including, near the distal end (4), at least one zone (12, 13) whose radiopacity is lower than the radiopacity of an adjacent zone.

Abstract: A luminal endoprosthesis for ramification of anatomical conduits in mammals, especially humans, and to a method for manufacturing this endoprosthesis.The latter includes at least one radially compressible and extendable tubular structure and includes at least one base element 12 with a continuous multifilament structure delimiting a longitudinal cavity 14 open at its two ends 16, 18.This at least one base element 12 includes two flexible segments 20, 22 extending one in a continuation of the other, substantially along the same axis in the absence of stress, and at least one lumen 24 opening into the cavity 14.

Abstract: The present invention relates to a device for protected angioplasty, intended for the implantation of luminal endoprosthesis (or stent) in critical areas such as carotid or vertebral arteries, where protection of downstream-situated organs is highly desirable. The device comprises a central stent pusher part comprising a microcatheter bearing at its distal end an atraumatic tip, the atraumatic tip being prolonged by a tip balloon part comprising an inflatable occlusive balloon which may be inflated with a physiologically acceptable fluid at predetermined rates, a fluid-releasing section extending at the proximal the of the occlusive balloon, said releasing section being able to release the fluid from the balloon into an upstream section of the vessel when the pressure of the fluid reaches a predetermined level.

Abstract: A luminal endoprosthesis comprising a framework made up of braided filaments. The framework is self-expanding, that is to say that after it has been radially compressed for positioning of the endoprosthesis, it automatically recovers its nominal diameter. The metal of the framework has undergone a thermal treatment bringing about a state transition, at a temperature close to that of the organism, and this confers upon it a suitable rigidity after it has been positioned in an anatomical conduit.