Guinea Pig: Devil’s Experiment (Ginī Piggu: Akuma no Jikken, a.k.a. “Unabridged Agony”) is a 1985 film directed by Satoru Ogura, and the first entry in the series. The film depicts a group of men who kidnap and graphically torture a young woman in a variety of ways—these include hitting her, kicking her, pinching her with pliers, forcing her to endure sound torture, burning her with hot oil, pouring maggots on her, and poking a needle through one of her eyes.
http://cinematicdiversions.com/guinea-pig-devils-experiment-gini-piggu-akuma-no-jikken-1985-review/