Michael Ives, 47, denied he or his wife Kerry Ives, 46, inflicted a severe head injury on Ethan Ives-Griffiths before he collapsed at their home in Flintshire, north Wales.
Michael Ives, 47, and Kerry Ives, 46, are on trial accused of murder, causing or allowing the death of a child and cruelty to a child - which they deny.