A man who severed part of his thumb in machinery had to wait eight hours for a hand specialist, who then told him it was too late to reattach it.
Leonard Bloksberg has lodged a formal complaint against Auckland City Hospital with the Health Board and the Health and Disability Commissioner.
The hospital says surgeons could not have reattached the piece of his finger as it was soft tissue, with no muscle or bone.
However, Bloksberg was angry the surgeon was not given a choice because of the delays.
As a biomedical research scientist who has done microsurgery and also makes award-winning jewellery, he needs his hands.