Electrosurgical pencil with smoke evacuation and electrode visualization

An electrosurgical pencil, comprising:

• a handle housing defining a fluid lumen and a central longitudinal axis;
• a nozzle removably coupled to a distal end portion of the handle housing, the nozzle defining a fluid lumen in fluid communication with the fluid lumen defined by the handle housing for evacuating fluid from a surgical site;
• an electrode configured to deliver electrosurgical energy to tissue and extending through the fluid lumen defined by the nozzle;
• a collet coupled to the handle housing and configured to be removably coupled to the electrode, the collet having a flange disposed within the fluid lumen defined by the nozzle, wherein a ratio between an area of the flange and an area of the fluid lumen defined by the nozzle at the flange is about 0.36;
• and
• at least one activation button extending from a top side of the handle housing and configured to control delivery of electrosurgical energy to the electrode, wherein the electrode defines a central longitudinal axis offset from the central longitudinal axis defined by the handle housing toward the top side of the handle housing.

An electrosurgical pencil, comprising:

• a handle housing defining a fluid lumen and a central longitudinal axis, the handle housing having a distal end portion that is recessed relative to the rest of the handle housing;
• a nozzle removably coupled to the recessed distal end portion of the handle housing, the nozzle defining a fluid lumen in fluid communication with the fluid lumen defined by the handle housing for evacuating fluid from a surgical site, the nozzle having a proximal end portion defining a slot configured to receive a nub protruding from an outer surface of the recessed distal portion of the handle housing to removably couple the nozzle to the handle housing;
• and
• an electrode configured to deliver electrosurgical energy to tissue, the electrode having a proximal portion coupled to the handle housing and a distal portion extending through the fluid lumen defined by the nozzle such that at least a portion of the electrode extends distally from a distal end of the nozzle.