Dreams or visions about a bandage tell you about shielding and protecting open emotional, mental, physical and psychological wounds that you have not yet processed or released.
Another explanation is that you want to strengthen something in your life, build bridges over old emotions, problems and spiritual setbacks. An alternative explanation is that you want to suppress addictions or recurring problems.
Yet another explanation is that the patch represents a part of yourself, unhealthy behavior that is the connecting factor over and over, adding water to the wine, adjusting, coming up with solutions for others, shorting yourself and so on. Pay close attention to where you put the patch on, how big the wound is, this tells a lot about the way you are in the situation or how you look at things.