I have never heard of this arrangement for an ostomy. Typically this style of bag is more for urostomys. I'd be curious to know why your surgeon set you up this way, do you have any other conditions that made the typical ostomy impossible? If that's not the case I would seek a 2nd opinion from another CR surgeon.
dx proctitis in 1987
dx UC in 1991, was stable until 1998
1998 started prednisone, asacol, pentasa, nortriptylene, ativan, 6MP, rowasa enemas and suppositories, hydrocortisone enemas, tried the SCD diet, being a vegetarian, omega 3s, flax, pranic healing, yoga, acupuncture, probiotics
2000 lost all my B-12 stores and became anemic
2001 opted for j-pouch surgery- now living life med-free