Device for vessel support and harvesting

A surgical device, comprising:

• a housing,
• an elongated shaft coupled to a first portion of the housing, the shaft extending from a proximal end to a distal end along a shaft axis, the shaft having one or more interior surfaces defining an interior portion;
• a flexible distal tip assembly comprising:
• a distal tip body that extends along a body axis from a proximal end to a distal end, wherein the proximal end of the distal tip body is coupled to the distal end of the shaft, the distal tip body having one or more interior surfaces defining an interior portion that is in communication with the interior portion of the shaft;
• a flexible loop portion that extends along a loop axis from a proximal end to a distal end, wherein the proximal end of the flexible loop portion is disposed at the distal end of the distal tip body,
• wherein the flexible loop portion is displaceable between a first position, in which the loop axis is linear and aligned with the body axis, and a second position, in which the distal end of the flexible loop portion is disposed at or adjacent to the proximal end of the flexible loop portion;
• and
• an actuator mechanism coupled to the housing, the actuator mechanism comprising:
• a first roller rotatably coupled to a second portion of the housing,
• a second roller rotatably coupled to a third portion of the housing,
• an actuator dial coupled to a fourth portion of the housing, the actuator dial coupled to the first roller such that a rotation of the actuator dial in a first rotational direction rotates the first roller in the first rotational direction, and when the actuator dial is rotated in the first rotational direction, the first roller is configured to displace a lumen disposed between the first roller and the second roller in a first linear direction, wherein a first portion of the lumen is configured to be disposed within the interior portion of the shaft such that the lumen is configured to displace in the first linear direction within the interior portion of the shaft, and
• wherein a first portion of a suture is configured to be coupled to the distal end of the flexible loop portion and a second portion of the suture is configured to extend through an interior portion of the lumen such that:
• (a) when the suture is in a first unsecured state, a third portion of the suture extends from the proximal end of the lumen and the third portion of the suture is configured to be displaced away from the proximal end of the lumen such that the distal end of the flexible loop portion is displaced from the first position to the second position in which the flexible loop portion is configured to surround a vessel to form a first loop state around the vessel, and
• (b) when the suture is in a second secured state, a fourth portion of the suture that extends from the proximal end of the lumen when the flexible loop portion is in the second position is secured so as to not be displaceable relative to the proximal end of the lumen and such that when the lumen is displaced in the first linear direction, the distal end of the flexible loop portion is displaced to or proximally beyond the proximal end of the distal tip body to a third position in which the flexible loop portion is configured to form a second loop state around the vessel that is tighter than the first loop state.