A system for dilating a Eustachian tube of a patient, the system comprising: (a) a guide member (100, 1100), wherein the guide member comprises a shaft having a proximal portion and a distal portion, wherein the guide member further comprises a bend at the distal portion, wherein the bend is configured to provide access to an opening in the ET; and (b) a dilation catheter, wherein the dilation catheter is slidable relative to the guide member, the dilation catheter comprising: (i) a shaft including a proximal portion and a distal portion, (ii) an inflatable balloon disposed at the distal portion of the shaft, and (iii) an actuator disposed at the proximal portion of the shaft, wherein the actuator comprises: a grasping portion, and an actuating member, wherein the inflatable balloon is configured to transition to an expanded configuration in response to actuation of the actuating member, wherein the actuating member comprises a bladder member in fluid communication with the inflatable balloon, wherein the bladder member is resiliently biased into an unactuated configuration to thereby bias the inflatable balloon into an unexpanded configuration, wherein the grasping portion and actuating member are configured to be grasped in a single hand of an operator to enable the operator to advance the dilation catheter relative to the guide member and to transition the inflatable balloon between expanded and unexpanded configurations with the single hand. (a) a guide member (100, 1100), wherein the guide member comprises a shaft having a proximal portion and a distal portion, wherein the guide member further comprises a bend at the distal portion, wherein the bend is configured to provide access to an opening in the ET; and (b) a dilation catheter, wherein the dilation catheter is slidable relative to the guide member, the dilation catheter comprising: (i) a shaft including a proximal portion and a distal portion, (ii) an inflatable balloon disposed at the distal portion of the shaft, and (iii) an actuator disposed at the proximal portion of the shaft, wherein the actuator comprises: a grasping portion, and an actuating member, wherein the inflatable balloon is configured to transition to an expanded configuration in response to actuation of the actuating member, wherein the actuating member comprises a bladder member in fluid communication with the inflatable balloon, wherein the bladder member is resiliently biased into an unactuated configuration to thereby bias the inflatable balloon into an unexpanded configuration, wherein the grasping portion and actuating member are configured to be grasped in a single hand of an operator to enable the operator to advance the dilation catheter relative to the guide member and to transition the inflatable balloon between expanded and unexpanded configurations with the single hand. (i) a shaft including a proximal portion and a distal portion, (ii) an inflatable balloon disposed at the distal portion of the shaft, and (iii) an actuator disposed at the proximal portion of the shaft, wherein the actuator comprises: a grasping portion, and an actuating member, wherein the inflatable balloon is configured to transition to an expanded configuration in response to actuation of the actuating member, wherein the actuating member comprises a bladder member in fluid communication with the inflatable balloon, wherein the bladder member is resiliently biased into an unactuated configuration to thereby bias the inflatable balloon into an unexpanded configuration, a grasping portion, and an actuating member, wherein the inflatable balloon is configured to transition to an expanded configuration in response to actuation of the actuating member, wherein the actuating member comprises a bladder member in fluid communication with the inflatable balloon, wherein the bladder member is resiliently biased into an unactuated configuration to thereby bias the inflatable balloon into an unexpanded configuration,