CPC A61B 18/1492 (2013.01) [A61B 18/1206 (2013.01); A61B 18/1815 (2013.01); H01P 1/065 (2013.01); H01P 1/066 (2013.01); A61B 2017/0034 (2013.01); A61B 2018/00077 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00202 (2013.01); A61B 2018/00208 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00755 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/00982 (2013.01); A61B 2018/00994 (2013.01); A61B 2018/1823 (2013.01); A61B 2018/1838 (2013.01); A61B 2018/1861 (2013.01); A61B 2090/035 (2016.02); H01P 5/085 (2013.01)] | 6 Claims |
1. An electrosurgical instrument for applying radiofrequency energy and/or microwave frequency energy to biological tissue, the instrument comprising:
an instrument tip for applying radiofrequency energy and/or microwave frequency energy to biological tissue;
a coaxial feed cable for conveying radiofrequency energy and/or microwave frequency energy to the instrument tip;
a sheath surrounding the coaxial feed cable; and
a plurality of rolling element bearings or brush bearings positioned between the coaxial feed cable and the sheath for enabling rotation of the coaxial feed cable relative to the sheath.
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