Shaped electrode bipolar resection apparatus, system and methods of use
An electrosurgical instrument is provided and includes a housing configured to connect to a source of bipolar electrosurgical energy and an electrode body coupled to the elongated housing. The electrode body includes an electrode face, first and second bipolar electrodes and a blade. The electrode face is formed on the distal end of the electrode body and includes a longitudinal axis and a transverse axis therethrough. The first and second electrodes have a leading edge and a trailing edge, are formed on opposite sides of the longitudinal axis and connect to opposed electrical potentials. The blade is positioned between the electrodes with at least a portion of the blade extending beyond the electrode face.
1. An electrosurgical instrument, comprising:
a housing defining a longitudinal axis; and
an electrode body coupled to the housing, the electrode body comprising:
an electrode face formed on a distal-most end of the electrode body, wherein the entire electrode face defines a plane that is perpendicular to the longitudinal axis;
a rotatable blade housing defining an opening;
a blade longitudinally moveable with respect to the rotatable blade housing while the electrode body is treating tissue and configured to extend through the opening to dispose at least a portion of the blade distally beyond the electrode face;
a first electrode disposed concentrically about the opening; and
a second electrode disposed concentrically about the first electrode, the blade configured to rotate relative to the first and second electrodes.
2. The electrosurgical instrument according to claim 1 , wherein the first and second electrodes are configured to connect to opposite electrical potentials of an electrosurgical energy source.
3. The electrosurgical instrument according to claim 1 , wherein the blade includes a bidirectional cutting surface.
4. The electrosurgical instrument according to claim 1 , wherein the blade is configured to rotate relative to the electrode body while the electrode body is treating tissue.
5. The electrosurgical instrument according to claim 1 , wherein the electrode body is cylindrically shaped.
6. The electrosurgical instrument according to claim 1 , wherein the blade is configured to move longitudinally with respect to the rotatable blade housing between an undeployed position, wherein a distal end of the blade is disposed proximal to the electrode face, and a plurality of deployed positions, wherein at least a portion of the blade is disposed distally beyond the electrode face.
7. The electrosurgical instrument according to claim 6 , further comprising an actuator operably coupled to the blade and configured to move the blade between the undeployed position and the plurality of deployed positions.
8. The electrosurgical instrument according to claim 1 , further comprising at least one actuator configured to move the electrode body in at least one of a yaw direction, a pitch direction, and a rotation direction relative to the longitudinal axis.
9. The electrosurgical instrument according to claim 1 , wherein the rotatable blade housing is rotatable relative to the first and second electrodes.
10. The electrosurgical instrument according to claim 1 , wherein the second electrode is formed of a plurality of electrodes.
11. An electrosurgical system, comprising:
a source of electrosurgical energy; and
an electrosurgical instrument configured to couple to the source of electrosurgical energy, the electrosurgical instrument comprising:
a housing defining a longitudinal axis; and
an electrode body coupled to the housing, the electrode body including:
an electrode face formed on a distal-most end of the electrode body, wherein the entire electrode face defines a plane that is perpendicular to the longitudinal axis;
a rotatable blade housing defining an opening;
a blade longitudinally moveable with respect to the rotatable blade housing while the electrode body is treating tissue and configured to extend through the opening to dispose at least a portion of the blade distally beyond the electrode face;
a first electrode disposed concentrically about the opening; and
a second electrode disposed concentrically about the first electrode, the blade configured to rotate relative to the first and second electrodes.
12. The electrosurgical system according to claim 11 , wherein the first and second electrodes are configured to connect to opposite electrical potentials of the source of electrosurgical energy.
13. The electrosurgical system according to claim 11 , wherein the blade includes a bidirectional cutting surface.
14. The electrosurgical system according to claim 11 , wherein the blade is configured to rotate relative to the electrode body while the electrode body is treating tissue.
15. The electrosurgical system according to claim 11 , wherein the electrode body is cylindrically shaped.
16. The electrosurgical system according to claim 11 , wherein the blade is configured to move longitudinally with respect to the rotatable blade housing between an undeployed position, wherein a distal end of the blade is disposed proximal to the electrode face, and a plurality of deployed positions, wherein at least a portion of the blade is disposed distally beyond the electrode face.
17. The electrosurgical system according to claim 16 , wherein the electrosurgical instrument further comprises an actuator operably coupled to the blade and configured to move the blade between the undeployed position and the plurality of deployed positions.
18. The electrosurgical system according to claim 11 , wherein the electrosurgical instrument further comprises at least one actuator configured to move the electrode body in at least one of a yaw direction, a pitch direction, and a rotation direction relative to the longitudinal axis.
19. The electrosurgical system according to claim 11 , wherein the rotatable blade housing is rotatable relative to the first and second electrodes, the blade disposed within the rotatable blade housing.
20. The electrosurgical system according to claim 11 , wherein the second electrode is formed of a plurality of electrodes.