A biopsy tract sealant applicator device for connection to a mounting hub of a biopsy cannula, comprising: a housing having an interior chamber; a syringe having a body and a plunger, the body being slidably coupled to the housing in the interior chamber, the body configured to move in the interior chamber of the housing between an extended position and a retracted position, the body having a cylinder and a distal end portion that defines a delivery port and a coupler, the delivery port being in fluid communication with the cylinder, the coupler being configured for connection to the mounting hub of the biopsy cannula, the plunger having a piston positioned in the cylinder proximal to the delivery port and configured to move in the cylinder between a proximal position and a distal position; and characterized by further comprising a spring unit having a first end and a second end, the first end being coupled to the body of the syringe and the second end being coupled to the housing, the spring unit having a charged state and a discharged state, wherein when the body is in the extended position the spring unit is in the charged state to exert a biasing force on the body of the syringe in a direction toward the retracted position; and a gear train located in the interior chamber of the housing, the gear train being operatively coupled to each of the housing, the body of the syringe, and the plunger of the syringe, the gear train configured to move the plunger from the proximal position toward the distal position as the body is moved from the extended position toward the retracted position by the biasing force exerted by the spring unit. a housing having an interior chamber; a syringe having a body and a plunger, the body being slidably coupled to the housing in the interior chamber, the body configured to move in the interior chamber of the housing between an extended position and a retracted position, the body having a cylinder and a distal end portion that defines a delivery port and a coupler, the delivery port being in fluid communication with the cylinder, the coupler being configured for connection to the mounting hub of the biopsy cannula, the plunger having a piston positioned in the cylinder proximal to the delivery port and configured to move in the cylinder between a proximal position and a distal position; and the body being slidably coupled to the housing in the interior chamber, the body configured to move in the interior chamber of the housing between an extended position and a retracted position, the body having a cylinder and a distal end portion that defines a delivery port and a coupler, the delivery port being in fluid communication with the cylinder, the coupler being configured for connection to the mounting hub of the biopsy cannula, the plunger having a piston positioned in the cylinder proximal to the delivery port and configured to move in the cylinder between a proximal position and a distal position; and a spring unit having a first end and a second end, the first end being coupled to the body of the syringe and the second end being coupled to the housing, the spring unit having a charged state and a discharged state, wherein when the body is in the extended position the spring unit is in the charged state to exert a biasing force on the body of the syringe in a direction toward the retracted position; and a gear train located in the interior chamber of the housing, the gear train being operatively coupled to each of the housing, the body of the syringe, and the plunger of the syringe, the gear train configured to move the plunger from the proximal position toward the distal position as the body is moved from the extended position toward the retracted position by the biasing force exerted by the spring unit.