DETECTION/STIMULATION MICROLEAD IMPLANTABLE IN A VESSEL OF THE VENOUS, ARTERIAL OR LYMPHATIC NETWORK
First Claim
1. A detection/stimulation microlead for implantation in a target vessel of the venous, arterial, or lymphatic network for stimulation of tissue in the region of the target vessel, the microlead comprising:
- a distal active portion comprising a microcable of a diameter at most equal to 2 French (0.66 mm) comprising an electrically conductive core coated with an insulation layer;
wherein the microcable further comprises;
at least one stimulation area having a plurality of exposed areas formed in the insulation layer forming a plurality of stimulation electrodes, wherein the surface without insulating coating of each exposed area is between 0.1 mm2 and 1 mm2; and
a three-dimensional preshape at the stimulation area configured so that the microcable contacts the wall of the target vessel in the stimulation area;
wherein the three-dimensional preshape is comprised in a cylindrical envelope volume whose diameter is selected to be in the free state of the microcable, greater than the diameter of the target vessel; and
wherein the plurality of exposed areas are disposed at respective locations of said microcable on said cylindrical envelope volume, these locations being uniformly distributed on the circumference of the cylindrical envelope volume considered in axial projection.
1 Assignment
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Accused Products
Abstract
A microlead has a distal active portion formed by a microcable including an electrically conductive core coated with an insulation layer, with a plurality of exposed areas forming the stimulation electrodes. The microcable has a three-dimensional preshape inscribed in a cylindrical envelope volume so as to match the target vessel wall. The microcable includes a plurality of exposed areas regularly distributed over the circumference of the cylindrical envelope volume considered in axial projection, the exposed zones extending only over an angular sector of the microcable considered in cross section, said angular sector facing the outside of the envelope volume of the preshape.
5 Citations
20 Claims
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1. A detection/stimulation microlead for implantation in a target vessel of the venous, arterial, or lymphatic network for stimulation of tissue in the region of the target vessel, the microlead comprising:
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a distal active portion comprising a microcable of a diameter at most equal to 2 French (0.66 mm) comprising an electrically conductive core coated with an insulation layer; wherein the microcable further comprises; at least one stimulation area having a plurality of exposed areas formed in the insulation layer forming a plurality of stimulation electrodes, wherein the surface without insulating coating of each exposed area is between 0.1 mm2 and 1 mm2; and a three-dimensional preshape at the stimulation area configured so that the microcable contacts the wall of the target vessel in the stimulation area; wherein the three-dimensional preshape is comprised in a cylindrical envelope volume whose diameter is selected to be in the free state of the microcable, greater than the diameter of the target vessel; and wherein the plurality of exposed areas are disposed at respective locations of said microcable on said cylindrical envelope volume, these locations being uniformly distributed on the circumference of the cylindrical envelope volume considered in axial projection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of stimulating distinct areas of tissue via the venous coronary network, comprising:
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introducing a microlead into the venous coronary network through the coronary sinus; advancing the lead so as to position a first set of stimulation electrodes of the microlead in a first vessel, a second set of stimulation electrodes in a second vessel, and an intermediate region through an anastomosis providing passage from the first vessel to the second vessel; wherein the microlead comprises an electrically conductive core coated with an insulation layer and a diameter no greater than 2 French (0.66 mm); wherein the first set and the second set of stimulation electrodes are formed by exposed areas formed in the insulation layer; wherein the first set and the second set of stimulation electrodes are separated by the intermediate region; wherein each of the first set and the second set of stimulation electrodes forms a stimulation area, and wherein the stimulation area comprises a three-dimensional preshape configured so that the microlead contacts the wall of the target vessel in the stimulation area; wherein the three-dimensional preshape is comprised in a cylindrical envelope volume with a diameter in the free state of the microcable, greater than the diameter of the target vessel; wherein the stimulation electrodes in each stimulation area are disposed at respective locations of said microlead on said cylindrical envelope volume, these locations being uniformly distributed on the circumference of the cylindrical envelope volume in axial projection; and providing stimulation through the target vessels by the first and second set of electrodes. - View Dependent Claims (17, 18, 19)
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20. A detection/stimulation microlead for implantation in a target vessel for stimulation of tissue in the region of the target vessel, the microlead comprising:
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a three-dimensional helical preshape at a stimulation area, the stimulation area comprising a plurality of electrodes, and the three-dimensional helical preshape configured such that the microlead contacts the wall of the target vessel in the stimulation area; wherein the three-dimensional helical preshape is comprised in a cylindrical envelope volume having a diameter, in the free state of the microlead, greater than the diameter of the target vessel; and wherein the plurality of electrodes are disposed at respective locations of said microlead on said cylindrical envelope volume, these locations being uniformly distributed on the circumference of the cylindrical envelope volume considered in axial projection.
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Specification