A method and system for determining pressure in a syringe, and more specifically to a syringe pressure accessory which can be connected to a syringe to determine pressure in a syringe and a gastric band. The syringe pressure accessory can detect a pressure of a syringe and/or a gastric band and digitally display the pressure. The syringe pressure accessory can include a durable unit and a disposable unit. The disposable unit can be disposed of after a single use, while the durable unit can be reused with multiple disposable units. The syringe pressure accessory can also include a syringe attachment unit and one or more display units for a caretaker or a patient. The display unit can be wirelessly connected to the syringe attachment unit to display a pressure chart or the results of various analysis of the pressure data. Markers can be added to the pressure chart.