Where can I buy an extra long douche?

Hi! I had sigmoid colon vaginoplasty a while ago and I’m having 1 issue. My vagina is so deep (about 8-9 inches) and I sometimes have issues with discharge/lube being stuck at the back of my canal and most douche wands are only about 5-6 inches in length so they don’t reach far enough inside of me to clean everything out. It’d be nice if I could find something that could reach all the way to the end of my canal for whenever I occasionally douche myself 🙏🏽 I’ve tried looking on amazon but the only thing that comes up are the ones that attach to your shower. I’d rather find one that I can squeeze myself. Any recommendations are much appreciated!