An insertion tool (10, 1600) for inserting a medical device into a body of a patient, the insertion tool (10, 1600) comprising: a housing (12, 1612); a needle; an advancement assembly configured to selectively advance the medical device for placement in the body of the patient; a guidewire advancement assembly (20, 1610) configured to selectively advance a guidewire prior to advancement of the medical device, the guidewire advancement assembly (20, 1610) comprising: a first portion; a second portion, the guidewire operably attached to one of the first portion or the second portion; characterized in that a proximal end of the guidewire is attached to a portion of the insertion tool (10, 1600), and is looped from its attachment point on the portion of the insertion tool (10, 1600) through guide surfaces included on the guidewire advancement assembly (20, 1610) before extending through a lumen of the needle, the guidewire advancement assembly (20, 1610) further comprises a frangible portion physically interconnecting the first portion of the guidewire advancement assembly (20, 1610) to the second portion of the guidewire advancement assembly (20, 1610), the frangible portion configured to break when a force of a predetermined magnitude is imposed thereon. a housing (12, 1612); a needle; an advancement assembly configured to selectively advance the medical device for placement in the body of the patient; a guidewire advancement assembly (20, 1610) configured to selectively advance a guidewire prior to advancement of the medical device, the guidewire advancement assembly (20, 1610) comprising: a first portion; a second portion, the guidewire operably attached to one of the first portion or the second portion; characterized in that a proximal end of the guidewire is attached to a portion of the insertion tool (10, 1600), and is looped from its attachment point on the portion of the insertion tool (10, 1600) through guide surfaces included on the guidewire advancement assembly (20, 1610) before extending through a lumen of the needle, the guidewire advancement assembly (20, 1610) further comprises a frangible portion physically interconnecting the first portion of the guidewire advancement assembly (20, 1610) to the second portion of the guidewire advancement assembly (20, 1610), the frangible portion configured to break when a force of a predetermined magnitude is imposed thereon. a first portion; a second portion, the guidewire operably attached to one of the first portion or the second portion; characterized in that a proximal end of the guidewire is attached to a portion of the insertion tool (10, 1600), and is looped from its attachment point on the portion of the insertion tool (10, 1600) through guide surfaces included on the guidewire advancement assembly (20, 1610) before extending through a lumen of the needle, the guidewire advancement assembly (20, 1610) further comprises a frangible portion physically interconnecting the first portion of the guidewire advancement assembly (20, 1610) to the second portion of the guidewire advancement assembly (20, 1610), the frangible portion configured to break when a force of a predetermined magnitude is imposed thereon.