System, device and method for treating tissue

A device for treating tissue, comprising:

• a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough along a longitudinal axis;
• and
• first and second clip arms, each extending from a proximal end to a distal end, the proximal ends being received within the channel of the capsule to be moved between an open tissue receiving configuration, in which the distal ends of the clip arms are separated from one another, and a closed tissue clipping configuration, in which the distal ends of the clip arms are moved toward one another,
• wherein the first clip arm includes a first portion which, in the tissue clipping configuration extends substantially parallel to a first portion of the second arm and parallel to the longitudinal axis, the first clip arm including a first tissue retention feature extending radially inward from the first portion of the first clip arm toward the longitudinal axis, the first tissue retention feature being configured to grip target tissue when in the tissue clipping configuration and subsequently release the target tissue when the first and second clip arms are moved toward the open tissue receiving configuration, the first retention feature being coupled to the first portion of the first clip arm via a first curved portion and wherein the second clip arm includes a second tissue retention feature extending radially inward from the first portion of the second clip arm toward the longitudinal axis, the second tissue retention feature being configured to grip target tissue when in the tissue clipping configuration and subsequently release the target tissue when the first and second clip arms are moved toward the open tissue receiving configuration, the second retention feature being coupled to the first portion of the second clip arm via a second curved portion.

A reloadable clip system, comprising:

• an applicator including a catheter and a control member extending therethrough, the control member extending from a proximal end to a distal end and being longitudinally movable relative to the applicator;
• at least one clip assembly coupled to the applicator, each clip assembly comprising:
• a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough along a longitudinal axis;
• and
• first and second clip arms each extending from a proximal end to a distal end, the proximal ends being received within the channel of the capsule to be moved between an open tissue receiving configuration, in which the distal ends of the clip arms are separated from one another, and a closed tissue clipping configuration, in which the distal ends of the clip arms are moved toward one another,
• wherein the first clip arm includes a first portion which, in the tissue clipping configuration extends substantially parallel to a first portion of the second arm and parallel to the longitudinal axis, the first clip arm including a first tissue retention feature extending radially inward from the first portion of the first clip arm toward the longitudinal axis, the first tissue retention feature being configured to grip target tissue when in the tissue clipping configuration and subsequently release the target tissue when the first and second clip arms are moved toward the open tissue receiving configuration, the first retention feature being coupled to the first portion of the first clip arm via a first curved portion and wherein the second clip arm includes a second tissue retention feature extending radially inward from the first portion of the second clip arm toward the longitudinal axis, the second tissue retention feature being configured to grip target tissue when in the tissue clipping configuration and subsequently release the target tissue when the first and second clip arms are moved toward the open tissue receiving configuration, the second retention feature being coupled to the first portion of the second clip arm via a second curved portion.

A method for treating tissue, comprising:

• inserting a first clip assembly to a target site within a living body via a working channel of an endoscope, the first clip assembly including a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough along a longitudinal axis and first and second clip arms slidably receive within the capsule to be movable between an open configuration, in which distal ends of the clip arms are separated from one another, and a closed configuration, in which distal ends of the clip arms are drawn toward on another;
• positioning the clip arms in contact with a first target tissue;
• moving the first clip assembly from the open configuration to the closed configuration such that a first tissue retention feature extending radially inward from the first portion of the first clip arm toward the longitudinal axis and a second tissue retention feature extending radially inward from a first portion of the second clip arm toward the longitudinal axis pierce through the first target tissue;
• moving the first clip assembly from the closed configuration to the open configuration, the first tissue retention feature releasing the first target tissue while the second tissue retention feature retains the first target tissue thereon;
• positioning the clip arms in contact with a second target tissue;
• and
• moving the first clip assembly from the open configuration to the closed configuration to clip the first and second target tissues between the first and second clip arms.