A laparoscopic instrument assembly with a handle member and a removable tip.Thehandle member and removable tip are mated using a double threaded design whichprovides asecure connection with low electrical resistance. Electrical energy isprovided through an innershaft to the removable tip, and a return energy path is formed using an outertubing of theinstrument assembly. The removal tip includes a cutting and sealing devicewith a resistivemember that is provided with the electrical energy, thereby enabling the tipto cut and seal tissue.
