Repair/use of Double Balloon catheter

I had a silicone dbl balloon cath and used it frequently. A while back, as I was inflating the exterior balloon, I heard this odd noise from back there and discovered the smaller balloon had split. I considered it unusable for months, until I remember when, years ago, I had purchased and used a single balloon sucessfully. Tried it on this one, and found I didn't need the outer balloon. So, been using it for the past couple years and saved a bunch.