Detection/stimulation implantable microlead incorporating an anti-inflammatory agent
First Claim
1. A detection/stimulation microlead for implantation in venous, arterial or lymphatic networks and having an active distal portion devoid of a central lumen, the microlead comprising:
- an electrically conductive cable formed by a strand of microcables, each microcable being formed of a strand of individual metallic wires;
an insulation layer of an electrically insulating material, sheathing the cable;
a plurality of exposed areas formed in the insulation layer so as to form corresponding electrodes of the microlead;
an interstitial space defined between the microcables and an internal wall of the insulation layer between the plurality of exposed areas; and
a pharmacologically active agent present in the interstitial space and configured to gradually diffuse from the interstitial space into the plurality of exposed areas and into an environment of the microlead after implantation thereof.
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Accused Products
Abstract
A microlead includes a conductive cable formed by a strand of microcables, each microcable being formed of a strand of individual metallic wires. The microlead also includes an insulation layer sheathing the cable. The microlead further includes at least one exposed area formed in the insulation layer so as to form a corresponding electrode of the microlead. The microlead further includes a pharmacologically active agent (e.g., an anti-inflammatory agent) configured to gradually be released into the environment of the microlead after implantation of the microlead. The pharmacologically active agent may be a soluble material. An interstitial space, delimited by the inner wall of the insulation layer and existing in the remainder between the wires of each microcable, is filled with the pharmacologically active agent.
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Citations
20 Claims
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1. A detection/stimulation microlead for implantation in venous, arterial or lymphatic networks and having an active distal portion devoid of a central lumen, the microlead comprising:
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an electrically conductive cable formed by a strand of microcables, each microcable being formed of a strand of individual metallic wires; an insulation layer of an electrically insulating material, sheathing the cable; a plurality of exposed areas formed in the insulation layer so as to form corresponding electrodes of the microlead; an interstitial space defined between the microcables and an internal wall of the insulation layer between the plurality of exposed areas; and a pharmacologically active agent present in the interstitial space and configured to gradually diffuse from the interstitial space into the plurality of exposed areas and into an environment of the microlead after implantation thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 18, 19)
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11. A method for providing a pharmacologically active agent to a stimulation area in a venous, arterial, or lymphatic network, the method comprising:
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providing a microlead, the microlead comprising; an active distal portion formed by an electrically conductive cable formed by a strand of microcables, each microcable formed of a strand of individual metallic wires; an insulation layer of an electrically insulating material sheathing the cable; a plurality of exposed areas formed in the insulation layer so as to form corresponding electrodes of the microlead; and an interstitial space defined between the microcables and an internal wall of the insulation layer between the plurality of exposed areas; introducing a pharmacologically active agent to the interstitial space; implanting the microlead in the venous, arterial, or lymphatic network; and allowing the pharmacologically active agent to gradually diffuse from the interstitial space into the plurality of exposed areas and into tissue surrounding the at least one exposed area at the stimulation area. - View Dependent Claims (12, 13, 14, 15, 16, 17, 20)
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Specification