Abstract
Local anesthetic agents were injected in the skin using a needleless jet injection device (MadaJet®) in 10 cases of thoracic and 20 cases of lumbar epidural anesthesia. At the time of injection using MadaJet®, 20 of 30 patients had no pain, and 8 patients had slight pain. The remaining 2 had moderate pain.
In 4 of 10 patients receiving thoracic epidural anesthesia, the anesthetic effect by MadaJet® was not adequate for freedom of pain, and conventional infiltration anesthesia was necessary at the time. In contrast, in 19 of cases of lumbar epidural anesthesia, patients were free from pain using only MadaJet®.
From our experience, it was concluded that MadaJet® was effective for topical anesthesia before puncture of Touhy needle especially for lumbar epidural anesthesia.
