LINX is approved, EndoStim is in trials. What next? I think some stem cell based approaches show promise.
I certainly hope that we only have to worry about
imperfect solutions for just a decade more.
Summarizing what I've found so far on stem cells, googling around.
Endoscopic injection of skeletal muscle-derived cells augments gut smooth muscle sphincter function
A patent www.google.com/patents/US20070128174
on muscle derived cell injections
Urinary incontinence(similar concept) www.post-gazette.com/stories/news/health/stem-cell-injection-successfully-treats-urinary-incontinence-63736/
and original (I think 2007) trials www.icsoffice.org/Abstracts/Publish/106/000093.pdf
Autologous Cell Therapy for Treatment of Fecal Incontinence clinicaltrials.gov/ct2/show/NCT01600755
Stem cells for male incontinence post prostate cancer surgerywww.stemcellrevolution.com/currently-studying/urology/male-incontinence/