A medical device comprising: a housing defining a chamber and a passageway in communication with the chamber; a catheter partially disposed through the passageway and rotatable relative to the housing; a drive assembly disposed within the chamber and moveable relative to the housing, movement of the drive assembly resulting in rotation of the catheter; and a trigger assembly partially disposed within the chamber, the trigger assembly comprising: a trigger attached to the housing and moveable between a first position and a second position relative to the housing; characterised by: a drive initiator attached to the trigger and moveable between a first position and a second position relative to the trigger; a drive member attached the drive initiator and moveable relative to the trigger between a first position and a second position; a flip drive attached to the trigger and moveable between a neutral position, a first drive position, and a second drive position, the flip drive in the neutral position when the drive initiator is in the first position, the flip drive in the first drive position when the drive initiator is in the second position and the drive member is in the second position, the flip drive in the second drive position when the drive initiator is in the second position and the drive member is in the first position; and a biasing member disposed within the chamber and biasing the flip drive to the neutral position when the drive initiator is in the first position; wherein the drive assembly moves relative to the housing when the flip drive is in the first drive position and the trigger is moved from its first position to its second position; and wherein the drive assembly moves relative to the housing when the flip drive is in the second drive position and the trigger is moved from its first position to its second position. a housing defining a chamber and a passageway in communication with the chamber; a catheter partially disposed through the passageway and rotatable relative to the housing; a drive assembly disposed within the chamber and moveable relative to the housing, movement of the drive assembly resulting in rotation of the catheter; and a trigger assembly partially disposed within the chamber, the trigger assembly comprising: a trigger attached to the housing and moveable between a first position and a second position relative to the housing; characterised by: a drive initiator attached to the trigger and moveable between a first position and a second position relative to the trigger; a drive member attached the drive initiator and moveable relative to the trigger between a first position and a second position; a flip drive attached to the trigger and moveable between a neutral position, a first drive position, and a second drive position, the flip drive in the neutral position when the drive initiator is in the first position, the flip drive in the first drive position when the drive initiator is in the second position and the drive member is in the second position, the flip drive in the second drive position when the drive initiator is in the second position and the drive member is in the first position; and a biasing member disposed within the chamber and biasing the flip drive to the neutral position when the drive initiator is in the first position; a trigger attached to the housing and moveable between a first position and a second position relative to the housing; characterised by: a drive initiator attached to the trigger and moveable between a first position and a second position relative to the trigger; a drive member attached the drive initiator and moveable relative to the trigger between a first position and a second position; a flip drive attached to the trigger and moveable between a neutral position, a first drive position, and a second drive position, the flip drive in the neutral position when the drive initiator is in the first position, the flip drive in the first drive position when the drive initiator is in the second position and the drive member is in the second position, the flip drive in the second drive position when the drive initiator is in the second position and the drive member is in the first position; and a biasing member disposed within the chamber and biasing the flip drive to the neutral position when the drive initiator is in the first position; a drive initiator attached to the trigger and moveable between a first position and a second position relative to the trigger; a drive member attached the drive initiator and moveable relative to the trigger between a first position and a second position; a flip drive attached to the trigger and moveable between a neutral position, a first drive position, and a second drive position, the flip drive in the neutral position when the drive initiator is in the first position, the flip drive in the first drive position when the drive initiator is in the second position and the drive member is in the second position, the flip drive in the second drive position when the drive initiator is in the second position and the drive member is in the first position; and a biasing member disposed within the chamber and biasing the flip drive to the neutral position when the drive initiator is in the first position; wherein the drive assembly moves relative to the housing when the flip drive is in the first drive position and the trigger is moved from its first position to its second position; and wherein the drive assembly moves relative to the housing when the flip drive is in the second drive position and the trigger is moved from its first position to its second position.