Patent ID: 7803107

Claim:
A locking device for maintaining a position of a first elongated member relative to a flexible endoscope while a second elongated member is withdrawn from the body lumen, the locking device comprising: a mounting mechanism for selectively coupling the locking device to a proximal end of the endoscope; an angled head which, when the mounting mechanism is coupled to the endoscope in a predetermined configuration, includes a first portion that overlies an opening of an access port that provides access to a working channel of an endoscope, the access port having a longitudinal axis; a plurality of locking features extending from the head to immobilize a portion of the first elongated member relative to the endoscope; a biopsy cap disposed on the access port; and wherein the head includes an indexing protrusion that is disposed on a top surface of and abuts the biopsy cap when the locking device is coupled to the endoscope, wherein the head includes a second portion extending from the indexing protrusion and extending away from the opening at a shallow angle relative to the longitudinal axis of the access port.