Have there been 1,993 Jarviks?

I was going to ask a question about the apparent demise of artificial hearts, since they never make the news anymore. A quick search of GQ yielded one irrelevant thread; not wanting to incur the wrath of DDG, a Google search yielded some surprising news–apparently the Jarvik 2000 heart is very promising as a long-term treatment (perhaps because of the adoption of Microsoft naming conventions?).

My question has now morphed into how many Jarviks have there been (besides Mr. & Mrs.), and how many individuals have received any of the variations?

[sub]Should I ask Marilyn?[/sub]

no offense intended, DDG.