Electrosurgical electrode and method of manufacturing same
First Claim
1. An electrosurgical device including an electrode, a handle connected to the electrode and an electrical source in communication with the handle to transfer electrical energy to the electrode for contacting tissue in a body during an electrosurgical procedure, said electrode comprising:
- a conductive substrate; and
at least one epoxy modified rigid silicone powder coating applied to said substrate, wherein the epoxy modified rigid silicone powder coating at least includes;
(a) about 50% parts per weight of a solvent-free hydroxyl functional solid phenyl silicone resin;
(b) about 23.5% parts per weight of a calcium metasilicate;
(c) about 10% parts per weight of an epoxy cresol novalac resin;
(d) about 5% parts per weight of a 60% active powder version of a methyl alkyl polysiloxane;
(e) about 1.5% parts per weight of an o-cresol novolac resin; and
(f) about 1% parts per weight of an acrylate copolymer.
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Accused Products
Abstract
An electrosurgical device coated an epoxy modified rigid silicone powder coating which includes a solvent-free hydroxyl functional solid phenyl silicone resin in the range of about 40% to about 60% parts per weight of the coating; a calcium metasilicate in the range of about 20% to about 40% parts per weight of the coating; an epoxy cresol novalac resin in the range of about 5% to about 15% parts per weight of the coating; an ultra-fine air micronized muscovite mica in the range of about 0% to about 10% parts per weight of the coating; a 60% active powder version of a methyl alkyl polysiloxane in the range of about 3% to about 7% parts per weight of the coating; a high temperature calcination of coprecipitated compound with manganese-copper-iron in the range of about 0% to about 10% parts per weight of the coating; an o-cresol novolac resin in the range of about 0.5% to about 3% parts per weight of the coating; and an acrylate copolymer in the range of about 0.5% to about 3% parts per weight of the coating;. This coating is applied to the surfaces of an electrosurgical device minimize the build-up of charred tissue (i.e., eschar) on the surfaces of the electrosurgical device.
152 Citations
30 Claims
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1. An electrosurgical device including an electrode, a handle connected to the electrode and an electrical source in communication with the handle to transfer electrical energy to the electrode for contacting tissue in a body during an electrosurgical procedure, said electrode comprising:
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a conductive substrate; and
at least one epoxy modified rigid silicone powder coating applied to said substrate, wherein the epoxy modified rigid silicone powder coating at least includes;
(a) about 50% parts per weight of a solvent-free hydroxyl functional solid phenyl silicone resin;
(b) about 23.5% parts per weight of a calcium metasilicate;
(c) about 10% parts per weight of an epoxy cresol novalac resin;
(d) about 5% parts per weight of a 60% active powder version of a methyl alkyl polysiloxane;
(e) about 1.5% parts per weight of an o-cresol novolac resin; and
(f) about 1% parts per weight of an acrylate copolymer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electrosurgical device comprising:
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a conductive substrate including a proximal end and a distal end;
a handle connected to the proximal end of said substrate;
at least one electrical transfer member connected to the handle, which transfers electrical energy from an electrical source through the handle to the conductive substrate; and
at least one layer of epoxy modified rigid silicone powder applied to the surface of the substrate, wherein the epoxy modified rigid silicone powder coating at least includes;
(a) a solvent-free hydroxyl functional solid phenyl silicone resin in the range of about 40% to about 60% parts per weight of the coating;
(b) a calcium metasilicate in the range of about 20% to about 40% parts per weight of the coating;
(c) an epoxy cresol novalac resin in the range of about 5% to about 15% parts per weight of the coating;
(d) a 60% active powder version of a methyl alkyl polysiloxane in the range of about 3% to about 7% parts per weight of the coating;
(e) an o-cresol novolac resin in the range of about 0.5% to about 3% parts per weight of the coating; and
(f) an acrylate copolymer in the range of about 0.5% to about 3% parts per weight of the coating. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of coating an electrosurgical device including a conductive substrate, said method comprising the steps of:
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(a) evenly applying an epoxy modified rigid silicone powder coating to a surface of the conductive substrate, wherein the epoxy modified rigid silicone powder coating at least includes;
(i) about 50% parts per weight of a solvent-free hydroxyl functional solid phenyl silicone resin;
(ii) about 23.5% parts per weight of a calcium metasilicate;
(iii) about 10% parts per weight of an epoxy cresol novalac resin;
(iv) about 5% parts per weight of a 60% active powder version of a methyl alkyl polysiloxane;
(v) about 1.5% parts per weight of an o-cresol novolac resin; and
(vi) about 1% parts per weight of an acrylate copolymer; and
(b) at least partially curing the epoxy modified rigid silicone powder coating. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method of coating an electrosurgical device including a conductive substrate, said method comprising the steps of:
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(a) evenly applying an epoxy modified rigid silicone powder coating to a surface of the conductive substrate, wherein the epoxy modified rigid silicone powder coating at least includes;
(i) a solvent-free hydroxyl functional solid phenyl silicone resin in the range of about 40% to about 60% parts per weight of the coating;
(ii) a calcium metasilicate in the range of about 20% to about 40% parts per weight of the coating;
(iii) an epoxy cresol novalac resin in the range of about 5% to about 15% parts per weight of the coating;
(iv) a 60% active powder version of a methyl alkyl polysiloxane in the range of about 3% to about 7% parts per weight of the coating;
(v) an o-cresol novolac resin in the range of about 0.5% to about 3% parts per weight of the coating; and
(vi) an acrylate copolymer in the range of about 0.5% to about 3% parts per weight of the coating; and
(b) at least partially curing the epoxy modified rigid silicone powder coating. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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Specification