Tissue/vessel sealer and cutter with variable shapes of jaw assembly with partial DLC coating

An advanced bipolar surgical instrument for sealing and cutting a tissue or vessel, comprising:

• a jaw assembly having two jaws (4,5) configured to act as electrodes, where the two jaws (4,5) include:
• a fixed jaw (5) having a first distal portion (100) and a second proximal portion (200), the first distal portion (100) being entirely distal of the second proximal portion (200), wherein:
• the first distal portion (100) is conductive, and includes a Titanium Nitride (TiN) coating (8) or a Titanium Nitride Silver (TiNAg) coating (8);
• and
• the second proximal portion (200) is non-conductive, includes a Diamond like Carbon (DLC) coating (7), and has therein an opening (55) where a ceramic insert (45) is inserted;
• a movable jaw (4) having a first distal portion (100) and a second proximal portion (200), the first distal portion (100) being entirely distal of the second proximal portion (200), the moving jaw (4) movable relative to the fixed jaw (5), wherein:
• the first distal portion (100) is conductive, and includes a Titanium Nitride (TiN) coating (8) or a Titanium Nitride Silver (TiNAg) coating (8);
• and
• the second proximal portion (200) is conductive, or is non-conductive:
• where conductive, the second proximal portion (200) includes a Titanium Nitride (TiN) coating (8) or a Titanium Nitride Silver (TiNAg) coating (8);
• where non-conductive, the second proximal portion (200) includes a Diamond like Carbon (DLC) coating;
• wherein the second portion (200) of the movable jaw (4) is movably connected within, and relative to, the ceramic insert (45) and the opening (55);
• wherein the two conductive jaws (4, 5) are configured, when the tissue or vessel is grasped in between the first distal portions (100) of the two conductive jaws (4, 5), to achieve sealing and cutting by jaw heating due to a concentration of current at the first distal portion (100) of each of the two jaws (4, 5), where the tissue or vessel is held between a narrow base center portion of each of the first distal portions (100) of the two jaws (4, 5), the narrow base center portion defining where inside surfaces of the first, distal portions (100) meet, each narrow base center portion having a width less than an overall width of the respective first distal portion (100).