Oh, no, that term is used in my own world and not a byproduct of association with Miss Buckley.

[Who he hasn't actually associated with for some time, after she went just a little bit crazy for a while. Which is the pot calling the kettle black if you think about it, but there you are.]

And yes, it was quite large -- for use at hospitals, you see, to let the patients be mobile even while on strict bed-rest. My doctor was never terribly fond of it.