EZJim

We "tubies" have our own specialized vocabulary just like OCF's members. The PEG most OCF members get is simply a long tube that goes into the stomach with about six to nine inches hanging outside like a swinging cat's tail. The medical name for the long tube is a gastronomy tube. The "button" is a nickname for a low profile gastronomy tube.
However you usually need to first get the long tube so the stoma (the hole in your stomach that the tube goes through)stablizes and then get its exact measurement. For example, my button is 3.5 cm long.
As far as inserting the button, it is even easier than the long tube since the button can only fit in one way: the correct way. Unlike the long tube, the button cannot be pushed into the stomach too far or too short. In fact, the button is so easy to change, that now my wife can do it. The button does have a special valve in it that the tube does not, an anti reflux valve that you need to hook up an extension to that lets you pour your feeds into it since the button lies right next to your skin. But with the valve, the button can never accidentally leak like the long tube does if the clamp comes open.
Here is a link to a picture of my AMT mini one button
AMT button
It gets more complicated if you need a J tube (goes to the jejunum - the section of the small intestine between the duodenum and the ileum) in addition to a G tube like Christine does, although AMT makes J/G buttons also.
Thanks for bringing this up. In the future I will use button (low profile gastronomy tube).
Charm