Is There An "Average" distance from the Anus to The Sigmoid Entrance?

I recently was delighted to receive my new SiliconeNozzles single balloon nozzle. The insertable length is 11.5 inches. I have played somewhat with it (vacation intervened.....) and have gotten all but the last 2" inserted without much effort. My question concerns getting the last 2" inside to allow the base to provide a seat to inflate the balloon itself.

I realize everyone's anatomy will vary somewhat; my question is for our medical members knowledge-base to wit: Is there a nominal distance from the anus to the turn into the sigmoid colon itself? My best effort so far is lying on my left side in a Sims position and lifting my right leg into the air to provide the most direct route to the sigmoid entrance. At that point I stop due to a perceived resistance-it's just not worth a ruptured colon....

I admit I have yet to try advancing the nozzle with solution flowing through it.

The rectum is 4-6 inches long depending on the person. Your nozzle is getting well into the sigmoid. The sigmoid is about 12 inches and that too, is very variable. Curves will inhibit how easily you can advance your tubes.

Advancing the nozzle - or a colon tube - will be much easier with solution flowing through it plus a good lubing of the top 4 to five Inches. I have done this hundreds of times without rupturing anything inside me.

I have found that putting a quart or more into the rectum helps straighten out the sigmoid and makes it easier to put in nozzles of any great length. I question whether lubricant can make it past the anus and whether it is of any use for insertions.

hankb