Overview Single-arm Study to Assess the Safety of Hydromorphone Hydrochloride by Intrathecal Administration Status: Completed Trial end date: 2018-02-01 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate the long-term safety of hydromorphone hydrochloride administered by intrathecal delivery. Phase: Phase 3 Details Lead Sponsor: MallinckrodtPiramal Critical Care, Ltd.Treatments: Hydromorphone