Japanese movie "Dr. Giggles"

Plot: Evan Landau (played by Larry Drake) has always dreamed of becoming a doctor like his father. After becoming a small-town doctor, his wife suddenly suffered from a hopeless heart disease, which drove her into a state of madness. In order to save his wife, he began to experiment with living donor heart transplantation. However, a plan went wrong and he became insane and was sent to a mental hospital. , in the hospital, he secretly conducted horrific experiments of dissecting living people and removing hearts. After asking a doctor to remove the heart without anesthesia, he escaped from the hospital and returned to the small town, trying to regain his shattered dream of being a doctor.