An insertion instrument configured to eject a first anchor and a second anchor at respective first and second target locations (24a, 24b), the first and second anchors (22a, 22b) including respective first and second anchor bodies (28a, 28b) that extend substantially along a respective direction of elongation, each of the first and second anchors (22a, 22b) further including a respective actuation member (37a, 37b), the insertion instrument comprising: a first pusher member; a cannulated second pusher member that contains the first anchor body; a cannula defining an elongate opening that contains the second anchor body such that the second anchor body is disposed distal to the first anchor body, wherein i. the first pusher member is disposed in the cannulated second pusher member and is further insertable into the cannula and configured to be depressed in the elongate opening so as to eject at least one of the first and second anchor bodies (28a, 28b) from the cannula and into the target location (24a, 24b), such that when a tensile force is applied to the respective actuation member (37a, 37b) along a direction substantially along the respective direction of elongation, the at least one anchor body (28a, 28b) expands along a second direction perpendicular with respect to the respective direction of elongation; and ii. the cannulated second pusher member is disposed in the elongate opening of the cannula; a casing that is fixed to the cannula; and complementary first and second guide members (338, 340) that are operably coupled between the casing and the second pusher member so as to guide relative movement between the casing and the second pusher member. a first pusher member; a cannulated second pusher member that contains the first anchor body; a cannula defining an elongate opening that contains the second anchor body such that the second anchor body is disposed distal to the first anchor body, wherein i. the first pusher member is disposed in the cannulated second pusher member and is further insertable into the cannula and configured to be depressed in the elongate opening so as to eject at least one of the first and second anchor bodies (28a, 28b) from the cannula and into the target location (24a, 24b), such that when a tensile force is applied to the respective actuation member (37a, 37b) along a direction substantially along the respective direction of elongation, the at least one anchor body (28a, 28b) expands along a second direction perpendicular with respect to the respective direction of elongation; and ii. the cannulated second pusher member is disposed in the elongate opening of the cannula; i. the first pusher member is disposed in the cannulated second pusher member and is further insertable into the cannula and configured to be depressed in the elongate opening so as to eject at least one of the first and second anchor bodies (28a, 28b) from the cannula and into the target location (24a, 24b), such that when a tensile force is applied to the respective actuation member (37a, 37b) along a direction substantially along the respective direction of elongation, the at least one anchor body (28a, 28b) expands along a second direction perpendicular with respect to the respective direction of elongation; and ii. the cannulated second pusher member is disposed in the elongate opening of the cannula; a casing that is fixed to the cannula; and complementary first and second guide members (338, 340) that are operably coupled between the casing and the second pusher member so as to guide relative movement between the casing and the second pusher member.