Hemostasis clip two stage deployment mechanism to eliminate shed parts

A clipping device, comprising:

• a clip including a capsule and a pair of clip arms, proximal ends of which are slidably received therein so that the clip arms are movable between an open configuration and a closed configuration as the clip arms are moved proximally into and distally extended from a distal opening of the capsule, each of the clip aims including an opening extending through the proximal ends thereof;
• a control member extending through a proximal portion of the clipping device from a proximal end to a distal end;
• and
• a connector including a pin extending through the opening of each of the clip arms, the connector being releasably coupled to the distal end of the control member so that, when the connector is in an unlocked configuration, longitudinal movement of the control member relative to the capsule moves the clip between the open and the closed configurations, the pin being configured so that, upon application of a first predetermined force to the connector via the control member, the pin is moved from the unlocked configuration in which the pin is received within a first portion of the opening to a locked configuration in which the pin is received within a second portion of the opening.

A clipping device, comprising:

• a clip including a capsule including a pair of clip arms, proximal ends of which are slidably received within the capsule to move the clip arms between an open configuration and a closed configuration, each of the clip arms including an opening extending through the proximal ends thereof;
• a control member extending through a proximal portion of the clipping device from a proximal end to a distal end;
• and
• a connector including a pin extending through the opening of each of the clip arms, the connector being releasably coupled to the distal end of the control member so that, when the connector is in an unlocked configuration, longitudinal movement of the control member relative to the capsule moves the clip between the open and the closed configurations, at least a portion of the connector being movable relative to the pin and the clip arms, when a first predetermined force is applied to the connector via the control member, from the unlocked configuration in which the pin is received within a first portion of the opening to a locked configuration in which the pin is received within a second portion of the opening.

A method for clipping tissue, comprising:

• inserting a clip device through a working channel of an endoscope to a target site within a body until a clip of the clip device extends distally past a distal end of the working channel, the clip device including a capsule and a pair of clip arms slidably received therein;
• moving the clip device between an open configuration, in which distal ends of the clip arms are separated from one another, and a closed configuration, in which the distal ends of the clip arms are drawn toward one another, using a control wire coupled to the clip arms until target tissue is received between the distal ends as desired, a distal end of the control wire being coupled to proximal ends of the clip arms via a connector including a pin extending through an opening extending through proximal ends of each of the clip arms;
• drawing the clip arms proximally into the capsule to move the clip toward the closed configuration to grip the target tissue between the clip arms;
• and
• locking the clip in the closed configuration by drawing a control member proximally relative to the capsule until a first predetermined force is exerted on the connector, moving the pin from a first portion of the opening to a second portion of the opening so that the pin engages a locking tab biased radially into a channel of the capsule.