Oshando Hylton pleaded not guilty to unlawful wounding when he appeared in the Corporate Area Resident Magistrate's Court on Tuesday.
The accused told the court that the complainant had been spreading rumours in his community about his sexuality.
Hylton denied assaulting the complainant, who is his cousin-in-law, but admitted that he confronted her about the alleged rumours.
The accused told the court that he had only taken the screwdriver out of his pocket during their confrontation, but claimed that the complainant was lying about him using it.
Senior Resident Magistrate Judith Pusey ordered for the medical report of the complainant's injuries to be presented to her when the case returns to court on March 10.