Release mechanism for over the scope clip

A clipping system for treating tissue, comprising:

• an adapter including a proximal portion configured to be mounted over a distal end of an insertion device and a distal portion extending distally from the proximal portion;
• a clip configured to be mounted over the distal portion of the adapter in an insertion configuration, the clip including first and second jaws connected to one another such that the first and second jaws are movable between the insertion configuration, in which the first and second jaws extend about opposing portions of the distal portion of the adapter and are separated from one another to receive tissue therebetween, and an initial deployment configuration, in which the clip is moved distally off of the adapter so that the first and second jaws are drawn toward one another to grip the tissue therebetween, the first and second jaws being biased toward the initial deployment configuration;
• a distal coupling including a channel extending therethrough and a recess formed in a side of the distal coupling, the recess sized and shaped to receive a side portion of the clip therewithin, the recess accessible by a window in the side of the distal coupling;
• and
• a release member sized and shaped to extend at least partially through the channel of the distal coupling, the release member including a retaining portion that, in a retaining position, is positioned within the recess between the window and the side portion of the clip, the retaining portion configured to retain the side portion of the clip within the recess by blocking the side portion of the clip from exiting the recess through the window, the release member movable to a release position in which the retaining portion is withdrawn from the recess to permit the side portion of the clip to exit the recess through the window to decouple the clip from the clipping system.

A method for treating tissue, comprising:

• inserting to a target area in a body lumen, a clip mounted over a distal portion of an adapter, the adapter including a proximal portion configured to be mounted over a distal end of an insertion device and the distal portion extending distally from the proximal portion, the clip being maintained in an insertion configuration in which first and second jaws extend about opposing portions of the distal portion of the adapter and are separated from one another to receive tissue therebetween, the clip being coupled to the adapter by a distal coupling including a channel extending therethrough and a recess formed in a side of the distal coupling, the recess sized and shaped to receive a side portion of the clip therewithin, the recess accessible by a window in the side of the distal coupling, and a release member sized and shaped to extend at least partially through the channel of the distal coupling, the release member including a retaining portion that, in a retaining position, is positioned within the recess between the window and the side portion of the clip, the retaining portion configured to retain the side portion of the clip within the recess by blocking the side portion of the clip from exiting the recess through the window;
• drawing the tissue into a channel of the adapter and between the first and second jaws of the clip;
• moving the clip distally off of the adapter to permit the clip to move from the insertion configuration to an initial deployment configuration, the first and second jaws of the clip being biased toward the initial deployment configuration in which the first and second jaws extend toward one another to grip the tissue drawn into the adapter;
• moving the release member to a release position in which the retaining portion is withdrawn from the recess to permit the side portion of the clip to exit the recess through the window;
• and
• drawing the distal coupling proximally to decouple the clip from a clipping system.