A pipeline video decoder and decompression system handles a plurality of separately encoded bit streams arranged as a single serial bit stream of digital bits and having separately encoded pairs of control codes and corresponding data carried in the serial bit stream. The haptic feedback device may include a case, a vibration member installed in the case, to vibrate, a vibration element formed in the vibration member, to generate vibrations, and a first impact absorbing member preventing a collision between the vibration member and the case. The invention also includes nucleic acid encoding constitutively open voltage-gated K channels, as well as cells and transgenic animals expressing constitutively open voltage-gated K channels. A method of percutaneously accessing an underlying surgical work site using the surgical apparatus is also disclosed.