Devices, systems, and methods for treating vessel wall openings

A device for delivering a medical adhesive to a subcutaneous region proximate and extravascular to an opening in a wall of a blood vessel, the device comprising:

• a housing comprising a proximal end and a distal end opposite the proximal end along a longitudinal dimension of the housing, the housing comprising:
• an inner wall and an outer wall extending along the longitudinal dimension of the housing, the outer wall radially spaced apart from and circumferentially surrounding the inner wall, wherein:
• the inner wall defines a first lumen extending from the proximal end of the housing to the distal end of the housing along the longitudinal dimension of the housing, the first lumen being open at the proximal and distal ends of the housing, wherein the first lumen is configured to receive an elongate member therein;
• a second lumen defined between the outer wall and the inner wall such that the second lumen at least partially circumferentially surrounds the first lumen and extends from the proximal end of the housing towards the distal end of the housing along the longitudinal dimension of the housing, the second lumen being open at the proximal end of the housing;
• and
• the outer wall defines an aperture extending radially through the outer wall from the second lumen to an environment external of the housing such that the aperture fluidically couples the second lumen to the environment external of the housing;
• a medical adhesive positioned within the second lumen of the housing;
• and
• an actuator configured to be slidably received within the second lumen, wherein movement of the actuator within the second lumen forces the medical adhesive to move through the aperture to the environment external of the housing.