One of the answers for rectocele treatment included the words vaginal pessary . what is this?

Supportive ring: Rectocele occurs when pelvic floor muscle lose support; rectum, usually uterus, maybe bladder sag. Pessary is a ring inserted into vagina to help keep things up and perky (kind of like a vaginal truss). This helps keep the rectum straight (as name implies), and lets it do its job of evacuating stool out, not bulge into vaginal vault.

Vaginal wall support: A pessary is a small, rubber device which is inserted into the vagina for added support. They come in many shapes and sizes, for different types of support problems such as rectocele and pelvic organ prolapse.

Device in vagina: To hold things up. There are a variety of shapes and sizes. Google to see some.

Support device: Pessary is a device that comes in a variety of sizes and shapes and is inserted into the vagina to provide support to the pelvic organs. A pessary can be an effective nonsurgical method of treatment for prolapse.