Control of balloon size in bowel irrigation system

A method for controlling a size of an inflatable balloon of a catheter for a bowel irrigation system, the method comprising:

• providing a bowel irrigation system comprising a container, a catheter adapted for insertion into a rectum of a user, the catheter comprising an inflatable balloon for retaining the catheter inside the rectum, a tubing connecting the container and the catheter, a pump adapted for inflating the balloon and for irrigating the rectum, a control unit adapted for controlling a flow of fluid in the system, a pressure sensor adapted for assessing a pressure inside the balloon, and the method comprising the steps of inflating the balloon with a first amount of liquid to an original retention size by pumping the first amount of liquid from the container to the balloon through the tubing, sensing a first pressure inside the balloon with the pressure sensor, comparing the first pressure inside the balloon with a first threshold value, initiating an auto-deflate scheme, with the control unit, in response to a value of the first pressure exceeding a first threshold value, by removing a first volume of liquid from the balloon and automatically reinflating the balloon to a subsequent retention size with a subsequent volume of liquid, with the subsequent volume of liquid less than the first volume of liquid ensuring the subsequent retention size is not greater than the original retention size, and repeatedly initiating the auto-deflate scheme, with the control unit, in response to the value of the first pressure exceeding the first threshold value, with the subsequent volume of liquid repeatedly decreasing until the balloon is emptied, wherein a first repetition of the subsequent volume of liquid reinflating the balloon during the repeatedly performed auto-deflate scheme is a volume larger than zero.