Implantable stimulation electrodes with non-native metal oxide coating mixtures
First Claim
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1. An implantable stimulation electrode, comprising:
- a metal surface essentially devoid of native metal oxides further comprising a metal selected from the group of metals consisting of valve metals or their alloys;
said metal surface further comprising an electrically-accessible area;
said electrically-accessible area further comprising a macroscopically-enhanced surface area;
said macroscopically-enhanced area further comprising a microscopically-enhanced surface area; and
,a non-native coating upon said metal surface comprising a mixture of at least two metal oxides selected from the group of metal oxides consisting of oxides of valve metals, noble metals, alloys of valve metals, alloys of noble metals, mixtures of valve and noble metals, said metal oxide or metal oxides capable of reversible reduction-oxidation.
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Abstract
The invention relates to an improved stimulation electrode for cardiac pacing and defibrillating, methods of manufacturing same, and methods of using same. Specifically, the electrodes of the invention by virtue of the methods of manufacturing and using, demonstrate improved capabilities of stimulating and sensing neuromuscular tissues. The electrodes have enhanced electrically-accessible surface areas which are coated with oxides of valve metals.
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Citations
36 Claims
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1. An implantable stimulation electrode, comprising:
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a metal surface essentially devoid of native metal oxides further comprising a metal selected from the group of metals consisting of valve metals or their alloys; said metal surface further comprising an electrically-accessible area; said electrically-accessible area further comprising a macroscopically-enhanced surface area; said macroscopically-enhanced area further comprising a microscopically-enhanced surface area; and
,a non-native coating upon said metal surface comprising a mixture of at least two metal oxides selected from the group of metal oxides consisting of oxides of valve metals, noble metals, alloys of valve metals, alloys of noble metals, mixtures of valve and noble metals, said metal oxide or metal oxides capable of reversible reduction-oxidation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 34, 35, 36)
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- 31. A method for making an improved metallic electrode for injecting charge into a biological tissue using controlled electrical pulses, said electrode made of a metal and having a metal surface, wherein the method consists of removing essentially all native metal oxides from said metal surface, macroscopically enhancing said metal surface, microscopically enhancing said metal surface and applying a coating upon said metal surface of a mixture of at least two metal oxides selected from the group of metal oxides consisting of oxides of valve metals, noble metals, alloys of valve metals, alloys of noble metals, mixtures of valve and noble metals, capable of reversible reduction-oxidation.
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