Repositionable over the scope clip with compliant mechanism

A clipping system for treating tissue, comprising:

• an adapter configured to be mounted over a distal end of an insertion device, the adapter extending from a proximal end to a distal end and including a channel extending therethrough;
• a clip including a base portion configured to be mounted over a periphery of the adapter and a plurality of arms extending distally from the base portion, the plurality of arms movable relative to one another between an insertion configuration, in which the plurality of arms extend along an exterior surface of the adapter so that distal ends of the plurality of arms are separated from one another in an open configuration to receive tissue therebetween, and an initial deployed configuration, in which the clip is moved distally off of the adapter so that the distal ends of the plurality of arms revert toward a biased closed configuration in which the distal ends thereof are drawn toward one another to grip tissue therebetween;
• and
• a first control member releasably coupled to the base portion of the clip and movably connected to the adapter so that a longitudinal movement of the first control member relative to the adapter moves the clip between the insertion configuration, the initial deployed configuration, and a review configuration, in which the adapter is permitted to be withdrawn proximally away from the clip while the first control member remains coupled to the clip to enhance visual observation of the clip, the first control member being operable to retract the clip proximally over the adapter toward the insertion configuration so that the plurality of arms is forced open as the clip is retracted over the adapter freeing the clip from tissue on which it had been clipped.

A clipping system for treating tissue, comprising:

• an endoscope extending longitudinally from a proximal end to a distal end;
• an adapter mountable over a distal end of the endoscope such that a channel of the adapter is aligned with a longitudinal axis of the endoscope;
• a clip including a ring-shaped base portion configured to be mounted over the adapter and a plurality of arms extending distally from the base portion, the plurality of arms movable relative to one another between an insertion configuration, in which the plurality of arms extend along an exterior surface of the adapter so that distal ends of the plurality of arms are separated from one another in an open configuration to receive tissue therebetween, and an initial deployed configuration, in which the clip is moved distally off of the adapter so that the distal ends of the plurality of arms revert toward a biased closed configuration in which the distal ends thereof are drawn toward one another to grip tissue therebetween;
• and
• first and second control members releasably coupled to the base portion of the clip and movably connected to the adapter so that a longitudinal movement of the first and second control members relative to the adapter moves the clip between the insertion configuration, the initial deployed configuration, and a review configuration, in which the endoscope is permitted to be withdrawn proximally away from the clip while the first and second control members remain coupled to the clip to enhance visual observation of the clip via the endoscope, the first and second control members being operable to retract the clip proximally over the adapter toward the insertion configuration so that the plurality of arms is forced open as the clip is retracted over the adapter freeing the clip from tissue on which it had been clipped.

A method for treating tissue, comprising:

• inserting a clip to a target area in a body lumen via an endoscope, the clip mounted in an open insertion configuration over a distal end of the endoscope via an adapter, wherein in the open insertion configuration a base portion of the clip is mounted over the adapter such that arms extending distally from the base portion extend along an exterior surface of the adapter with distal ends of the arms of the clip separated from one another;
• drawing tissue into a channel of the adapter and between the arms of the clip;
• moving the clip from the open insertion configuration toward an initial deployed configuration by moving distally, relative to the endoscope, distal ends of control members releasably coupled to the base portion of the clip so that the control members push the clip distally off of the adapter freeing the arms to revert toward a biased closed configuration in which distal ends of the arms extend toward one another to grip tissue therebetween;
• and
• drawing the endoscope proximally away from the clip, while the clip remains coupled to the distal ends of the control members, toward a review configuration in which a visualization of the clip via the endoscope is enhanced.