Coated implantable stimulation electrode and lead
First Claim
1. An implantable stimulation lead adapted for electrical contact with heart tissue, said stimulation lead for use with a cardiac pulse generator, comprising:
- an electrical conductor having a proximal end and a distal end;
an insulation sheath covering said conductor;
an electrode coupled to said distal end of said conductor for making electrical contact with heart tissue; and
coating means coating said electrode for reducing inflammation of the heart tissue upon implant of the stimulation lead, said coating means including a viscous material coating, wherein said viscous material coating is a composition including a therapeutic agent and a biocompatible, matrix material comprising crosslinked proteins, wherein said proteins are selected from the group consisting of albumin, collagen and gelatin.
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Accused Products
Abstract
An implantable stimulation lead having an anti-inflammatory coating on the exposed surface area of the distal tip electrode. The coating is a semi-viscous or gelatinous material having the ability to absorb physiological fluids to provide electrical conductivity through the coating. The coating preferably has a matrix having an innate hypo-inflammatory property which can be combined with drugs and therapeutic agents to deliver the drugs and agents by co-dissolution or diffusion, or alternatively the matrix material can be used as a coating to keep the electrode surface electrochemically clean prior to and during implant.
123 Citations
5 Claims
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1. An implantable stimulation lead adapted for electrical contact with heart tissue, said stimulation lead for use with a cardiac pulse generator, comprising:
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an electrical conductor having a proximal end and a distal end; an insulation sheath covering said conductor; an electrode coupled to said distal end of said conductor for making electrical contact with heart tissue; and coating means coating said electrode for reducing inflammation of the heart tissue upon implant of the stimulation lead, said coating means including a viscous material coating, wherein said viscous material coating is a composition including a therapeutic agent and a biocompatible, matrix material comprising crosslinked proteins, wherein said proteins are selected from the group consisting of albumin, collagen and gelatin. - View Dependent Claims (2)
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3. An implantable stimulation lead adapted for electrical contact with heart tissue, said stimulation lead for use with a cardiac pulse generator, comprising:
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an electrical conductor having a proximal end and a distal end; an insulation sheath covering said conductor; an electrode coupled to said distal end of said conductor for making electrical contact with heart tissue; and coating means coating said electrode for reducing inflammation of the heart tissue upon implant of the stimulation lead, said coating means including a viscous material coating, wherein said viscous material coating is a composition including a therapeutic agent and a biocompatible, matrix material comprising a soluble starch selected from the group consisting of amylodextrin and amylogen.
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4. An implantable stimulation lead adapted for electrical contact with heart tissue, said stimulation lead for use with a cardiac pulse generator, comprising:
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an electrical conductor having a proximal end and a distal end; an insulation sheath covering said conductor; an electrode coupled to said distal end of said conductor for making electrical contact with heart tissue; and coating means coating said electrode for reducing inflammation of the heart tissue upon implant of the stimulation lead, said coating means including a viscous material coating, wherein said viscous material coating is a biocompatible, matrix material comprising hydrophilic polymer derivatives selected from the group consisting of polyethylene glycols, polyvinylpyrrolidones, polyacrylamide, and polyvinylalcohol, wherein said hydrophilic polymer derivatives are modified to incorporate a photo-activated crosslinking moiety.
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5. An implantable stimulation lead adapted for electrical contact with heart tissue, said stimulation lead for use with a cardiac pulse generator, comprising:
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an electrical conductor having a proximal end and a distal end; an insulation sheath covering said conductor; an electrode coupled to said distal end of said conductor for making electrical contact with heart tissue; and coating means coating said electrode for reducing inflammation of the heart tissue upon implant of the stimulation lead, said coating means including a viscous material coating, wherein said viscous material coating is a biocompatible, matrix material comprising hydrophilic polymer derivatives selected from the group consisting of polyethylene glycols, polyvinylpyrrolidones, polyacrylamide, and polyvinylalcohol, wherein said hydrophilic polymer derivatives are modified to incorporate a thermally-activated crosslinking moiety.
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Specification