A method of manufacturing an end effector assembly including first and second energizable portions configured to supply energy to tissue, the method comprising: forming a substrate including first and second substrate portions interconnected by a connector portion , the substrate formed as a single integrated component, wherein the substrate includes: in top view a generally U-shaped outer engagement flange defining first and second side portions interconnected by an arc-shaped portion ; a generally U-shaped tissue-contacting segment providing the said first substrate portion and extending inwardly from the outer engagement flange and defining first and second side portions interconnected by an arc-shaped portion ; and a central member providing the said second substrate portion, wherein the central member defines an inner engagement flange extending therefrom; engaging the substrate with an insulative member ; and removing the connector portion of the substrate to electrically insulate the first and second substrate portions from one another; characterized in that : in top view the connector portion is generally U-shaped and extends inwardly from the tissue-contacting segment , the connector portion defining first and second side portions interconnected by an arc-shaped portion , the central member of the substrate being disposed between the first and second side portions and the arc-shaped portion of the connector ; and the method further comprises the step of perforating the substrate where each of the first and second substrate portions meet the connector portion to facilitate removal of the generally U-shaped connector portion. forming a substrate including first and second substrate portions interconnected by a connector portion , the substrate formed as a single integrated component, wherein the substrate includes: in top view a generally U-shaped outer engagement flange defining first and second side portions interconnected by an arc-shaped portion ; a generally U-shaped tissue-contacting segment providing the said first substrate portion and extending inwardly from the outer engagement flange and defining first and second side portions interconnected by an arc-shaped portion ; and a central member providing the said second substrate portion, wherein the central member defines an inner engagement flange extending therefrom; engaging the substrate with an insulative member ; and removing the connector portion of the substrate to electrically insulate the first and second substrate portions from one another; characterized in that : in top view the connector portion is generally U-shaped and extends inwardly from the tissue-contacting segment , the connector portion defining first and second side portions interconnected by an arc-shaped portion , the central member of the substrate being disposed between the first and second side portions and the arc-shaped portion of the connector ; and the method further comprises the step of perforating the substrate where each of the first and second substrate portions meet the connector portion to facilitate removal of the generally U-shaped connector portion. in top view the connector portion is generally U-shaped and extends inwardly from the tissue-contacting segment , the connector portion defining first and second side portions interconnected by an arc-shaped portion , the central member of the substrate being disposed between the first and second side portions and the arc-shaped portion of the connector ; and the method further comprises the step of perforating the substrate where each of the first and second substrate portions meet the connector portion to facilitate removal of the generally U-shaped connector portion. <EOS>