Medical buttplugs for incontinence

Icky subject, I know: incontinence. It can happen to anyone for a variety of reasons, most of them medical. Infections or botched surgeries can disabled smooth muscle control or damage the nerves needed to "hold it in." Age, of course, takes its toll.

Medicine to the rescue. In this incredibly advanced 21st century, we have come up with.... the BUTT TAMPON! You can read about it at this page. (scroll down a bit). The thing I wonder about is the various shapes and sizes of the butt tampons... how do you get them in? Do they expand like a women's tampon? And what the hell do you do with the sizable string/handle, esp. when swimming (as the site suggests)?