What exactly does "Hospital Grade" mean?

Thank you all for the replies, especially Albertporter - that pdf seemed to be exactly what I was looking for. However, upon reading that pdf, it seems that the primary differences are "grounding reliability, assembly integrity, strength and durability." None of which seem to me to be capable of affecting the sound of our equipment... or am I missing something? And I don't think that requiring "X" amount of force to remove a plug from an outlet makes the outlet superior for our purposes although a snug fit is obviously necessary. Does the "grounding reliability, assembly integrity" somehow make the outlets less susceptible to rfi noise and the like?

Or is the audiophile key here the fact that these recepticles come in a preferred choice of metal make-up, e.g. brass w/o a nickle finish?

So to summarize, what is it about these hospital grade differences that make them sound better???

Orange Levitron hospital grade are bad and degrade the system after a few weeks.
Avoid these (serious!)
Read on audio asylum cables asylum./ do a search for orange and see how many say avoid these.
I had some and afterwards took them apart. They had some odd oillike substance coating the contact areas.
They sounded bad.

It means

1) more expensive
2) not always covered by insurance and
3)linked to fear

so you will be less likely to protest and just pay the extra money.

Covered by Medicare?

>>"And I don't think that requiring "X" amount of force to remove a plug from an outlet makes the outlet superior for our purposes although a snug fit is obviously necessary."<<
[Studioray]
>>>>>>>>>>>

It's Contact Pressure......You misssed the whole point.
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