A method for medically treating patient tissue using a medical instrument, wherein the medical instrument includes a flexible sheath having a distal end and an end effector attached to the sheath proximate the distal end and insertable into a patient, wherein the end effector includes opposing and retroflexed first and second jaws and includes at least one medical treatment electrode supported by the second jaw, wherein the second jaw is rotatable, and wherein {HEAD ~ the method} includes {TAIL ~ the steps} of: 
A method for medically treating patient tissue using a medical instrument , wherein the medical instrument includes a flexible sheath having a distal end and an end effector attached to the sheath proximate the distal end and insertable into a patient , wherein the end effector includes opposing and retroflexed first and second jaws and includes at least one medical treatment electrode supported by the second jaw , wherein the second jaw is rotatable , and wherein { HEAD ~ the method } includes { TAIL ~ the steps } of :
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