A home win in Dublin would make Leinster the first Irish side to win the Heineken Cup and their domestic league in the same season.
That record would add to one secured last weekend when they won a third Heineken Cup in four years against Ulster - a feat not even French giants Toulouse have managed.
Although stand-out performers in the regular season in the PRO12, Leinster have lost twice to the Ospreys this season.
The first was back in September in Swansea, 27-3, and the second was a thriller in March as a late Richard Hibbard try gave the visiting Ospreys a famous 23-22 win.
And Healy insists he's banishing any thoughts of legacy whilst he prepares for the season's climax on Sunday.
"It's something that we strive for to make a legacy of what your team is but it's not something you stop and think about," said Healy.
"It's always something you want to continue and get better and better but you never have that if you can stop, and not go through this week or chase that win and get to finals.
"It's nothing that they're (Ospreys) not capable of either (beating us).
"We're clued into that and having everything in the right place and right set-up to win it."
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