Electrosurgical devices, electrosurgical unit and methods of use thereof
A cartridge assembly to couple an electrosurgical device to treat tissue with an electrosurgical unit includes a cartridge member to operate with a power delivery apparatus of the electrosurgical unit and a fluid delivery apparatus of the electrosurgical unit. An electrosurgical unit includes a power delivery apparatus and a fluid delivery apparatus arranged to operate with a cartridge member to be located in a cartridge receptacle of the electrosurgical unit. An electrosurgical device includes a first electrode spaced alongside the second electrode, with each electrode having a blade shaped member. Each blade shaped member has opposing sides bounded by edges, with the edges having a medial edge and a lateral edge. At least one fluid outlet is adjacent each blade shaped member, and each fluid outlet is in fluid communication with a fluid passage. The device can be operated as either a bipolar device or a monopolar device and includes a switch to inhibit capacitive coupling to one of the electrodes when the other electrode is used in monopolar fashion.
1. An electrosurgical device comprising:
a handle;
a shaft member distal to the handle;
a first electrode and a second electrode distal to the shaft member, each of the first electrode and the second electrode being stationary, wherein the first electrode comprises a first blade shaped member and the second electrode comprises a second blade shaped member;
each of the first and second blade shaped members having opposing sides bounded by edges, the edges comprising a medial edge and a lateral edge;
at least one fluid outlet adjacent the first blade shaped member and at least one fluid outlet adjacent the second blade shaped member;
each fluid outlet in fluid communication with a fluid passage; and
a distal portion of each blade shaped member includes a non-conical shaped protrusion on at least one side of each blade shaped member, the non-conical shaped protrusion extending in a direction not substantially planar to its respective blade shaped member.
2. The device of claim 1 wherein:
a distal end of each blade shaped member is rounded from the medial edge to the lateral edge of the blade shaped member.
3. The device of claim 2 wherein:
the rounded distal end of each blade shaped member is defined by a radius.
4. The device of claim 1 wherein:
a distal portion of each blade shaped member is at an obtuse angle relative to a proximal portion of the blade shaped member.
5. The device of claim 4 wherein:
each obtuse angle has a vertex extending across a width of each blade shaped member.
6. The device of claim 1 wherein:
the lateral edge of at least one of the blade shaped members provides a cutting edge.
7. The device of claim 1 wherein the lateral edge of at least one of the blade shaped members comprises a beveled edge.
8. The device of claim 1 wherein:
the lateral edge of at least one of the blade shaped members comprises a double beveled edge.
9. The device of claim 1 wherein:
a distal end of at least one of the blade shaped members provides a cutting edge.
10. The device of claim 1 wherein:
the first electrode is distal to a distal end of a first electrically conductive tube; and
the second electrode is distal to a distal end of a second electrically conductive tube.
11. The device of claim 1 wherein:
the at least one fluid outlet adjacent the first blade shaped member is located at a distal end of a first electrically conductive tube; and
the at least one fluid outlet adjacent the second blade shaped member is located at a distal end of a second electrically conductive tube.
12. The device of claim 1 wherein:
each blade shaped member comprises a sheet metal.
13. The device of claim 1 wherein:
each blade shaped member comprises a stamped metal strip.
14. The device of claim 1 wherein:
the first electrode and the second electrode have at least one of a same size and a same shape.
15. The device of claim 1 wherein:
the blade members are coplanar.
16. The device of claim 1 wherein:
at least a portion of one of the opposing sides of the first blade member is parallel with at least a portion of one of the opposing sides of the second blade member.
17. The device of claim 1 wherein:
at least a portion of one of the opposing sides of the first blade member is coplanar with at least a portion of one of the opposing sides of the second blade member.
18. The device of claim 1 wherein:
at least a portion of each opposing side of the first blade member is parallel with a corresponding opposing side of the second blade member.
19. The device of claim 1 wherein:
at least a portion of each opposing sides of the first blade member is coplanar with a corresponding opposing sides of the second blade member.
20. The device of claim 1 wherein:
the first and second electrodes are configured as bipolar electrodes.
21. The device of claim 1 wherein:
at least one of the electrodes is configured as a monopolar electrode.
22. The device of claim 1 wherein:
the first electrode and the second electrode are configured to treat tissue by moving along a tissue surface in a presence of a bipolar power output and a fluid provided simultaneously from the fluid outlets.
23. The device of claim 1 wherein:
each blade member has a length in a range of 6 mm to 15 mm, a width in a range of 2 mm to 3 mm, and a thickness in a range of 0.25 mm to 0.75 mm.
24. An electro surgical device comprising:
a handle;
a shaft member distal to the handle;
a first electrode and a second electrode distal to the shaft member, each of the first electrode and the second electrode being stationary, wherein the first electrode comprises a first blade shaped member and the second electrode comprises a second blade shaped member;
each of the first and second blade shaped members having opposing sides bounded by edges, the edges comprising a medial edge and a lateral edge;
at least one fluid outlet adjacent the first blade shaped member and at least one fluid outlet adjacent the second blade shaped member; each fluid outlet in fluid communication with a fluid passage;
a distal portion of each blade shaped member includes a protrusion having a convex curvature on at least one side of the blade shaped member.
25. An electrosurgical device comprising:
a handle;
a shaft member distal to the handle;
a first electrode and a second electrode distal to the shaft member, each of the first electrode and the second electrode being stationary, wherein the first electrode comprises a first blade shaped member and the second electrode comprises a second blade shaped member;
each of the first and second blade shaped members having opposing sides bounded by edges, the edges comprising a medial edge and a lateral edge;
at least one fluid outlet adjacent the first blade shaped member and at least one fluid outlet adjacent the second blade shaped member;
each fluid outlet in fluid communication with a fluid passage; and
a distal portion of each blade shaped member includes a recess on at least one side of the blade shaped member.
26. The device of claim 25 wherein:
each recess comprises a concave curvature on one side of the blade shaped member.