Heat star Dwyane Wade has asked a court to grant him full custody of his two young sons.

The request adds to an already drawn-out divorce proceeding between Wade and his estranged wife.

Wade has also asked that his wife be ordered to undergo a psychological examination.

The couple has two boys, ages 8 and 2.

"For more than two years, I have tried to make peace with Siohvaughn concerning our divorce and custody of our kids," Wade said in a statement.

"I no longer believe that's possible. Siohvaughn has consistently attempted to interrupt or prevent me from having visitation time with our boys."