US Patent 8486107 Method of sealing tissue using radiofrequency energy

A forceps for sealing tissue includes a housing having one or more shafts that extend therefrom configured to support an end effector assembly at a distal end thereof. The end effector assembly includes a pair of opposing jaw members each having a sealing plate with tissue engaging surfaces adapted to connect to an electrosurgical energy source. At least one of the sealing plates includes a predetermined surface geometry defined thereon that imprints a corresponding surface geometry onto the tissue seal to facilitate sealing the tissue with a foreign material when electrosurgical energy is applied to the forceps.