An inflation device (20, 100) for selectively inflating a balloon (26) of a surgical instrument (24) including a syringe (102), a connector (106), a mechanical pressure indicator (104), and a relief port (218). The syringe includes a plunger (122) slidably disposed within a barrel (120). The connector fluidly connects an outlet (132) of the syringe with a surgical instrument balloon to establish a closed inflation system between the syringe and an interior of the balloon. The mechanical pressure indicator is associated with the syringe and configured to transition from a non-alert state to an alert state when a pressure of the inflation system has reached a predetermined level. The relief port is associated with the mechanical pressure indicator and configured to relieve a pressure of the inflation system when the system at least reaches the predetermined level.
