An insertion tool configured to facilitate insertion of a lead having a plurality of electrodes disposed thereon at least partially into a bodily orifice, the insertion tool comprising: a handle assembly configured to facilitate handling of the insertion tool; an insertion assembly coupled to the handle assembly and comprising a rigid holding tube configured to removably couple to the lead; and a release assembly disposed at least partially within the handle assembly and comprising a release button; wherein the release assembly is configured to release the lead from the holding tube in response to user actuation of the release button, characterized in that the handle assembly comprises: a handle portion configured to facilitate handling of the insertion tool by a user and house a portion of the release assembly, the handle portion comprising a lumen extending at least partially therethrough; and a rigid handle tube coupled to a distal end of the handle portion and having a lumen extending therethrough, the lumen of the handle tube being in communication with the lumen of the handle portion; wherein the handle tube is coupled to at least one component of the insertion assembly, wherein the release assembly further comprises a plunger (1204, 1404) disposed within the lumen of the handle portion and coupled to the release button; wherein the insertion assembly further comprises a flexible tube coupled to the proximal portion of the holding tube and to a distal portion of the plunger, the flexible tube configured to pass through the lumen of the handle tube; and wherein the user actuation of the release button is configured to release the lead from the holding tube by retracting the plunger within the lumen of the handle portion towards a proximal end of the handle portion, the retracting of the plunger causing the flexible tube and the holding tube to retract away from the lead. a handle assembly configured to facilitate handling of the insertion tool; an insertion assembly coupled to the handle assembly and comprising a rigid holding tube configured to removably couple to the lead; and a release assembly disposed at least partially within the handle assembly and comprising a release button; wherein the release assembly is configured to release the lead from the holding tube in response to user actuation of the release button, a handle portion configured to facilitate handling of the insertion tool by a user and house a portion of the release assembly, the handle portion comprising a lumen extending at least partially therethrough; and a rigid handle tube coupled to a distal end of the handle portion and having a lumen extending therethrough, the lumen of the handle tube being in communication with the lumen of the handle portion; wherein the handle tube is coupled to at least one component of the insertion assembly, wherein the release assembly further comprises a plunger (1204, 1404) disposed within the lumen of the handle portion and coupled to the release button; wherein the insertion assembly further comprises a flexible tube coupled to the proximal portion of the holding tube and to a distal portion of the plunger, the flexible tube configured to pass through the lumen of the handle tube; and wherein the user actuation of the release button is configured to release the lead from the holding tube by retracting the plunger within the lumen of the handle portion towards a proximal end of the handle portion, the retracting of the plunger causing the flexible tube and the holding tube to retract away from the lead.