I found a few product that are anal probe for pelvic floor exercises. It's designed for incontinence.

Will this work?
Does anyone have experience with one?

http://www.konmed.cn/48-anal-probe.html

https://www.amazon.co.uk/TENScare-X-...g_sims?ie=UTF8

https://www.amazon.co.uk/pelvic-pros...YVYHFTE8WTRD3G