Graft Delivery Device with Accurate Dispensing

Disclosed herein are systems and methods for graft delivery with accurate dispensing. For example, a device for delivering graft material to a target site includes an actuation mechanism and a tube. The tube defines a lumen and an open end and is configured to receive graft material through the open end. The tube includes a pressure relief opening and a dosage window. The pressure relief opening is disposed in a wall of the tube, defining a pressure chamber between the open end and the pressure relief opening. The device further includes a plunger positioned within the lumen of the tube and coupled to the actuation mechanism such that at least a portion of the plunger (or the actuation mechanism) is visible through the dosage window. The actuation mechanism is configured to advance the plunger toward the open end to deliver graft material through the open end.