OPEN LABEL, DOSE ESCALATION STUDY OF SNX-111 ADMINISTERED INTRATHECALLY TO PT

SNX-111是一种电压敏感型钙通道阻滞剂， 阻断神经元(N型)钙通道。这些频道位于 背角胶状质内密度最高，其中 研究表明，阻断钙离子内流可以产生止痛作用。这个 目前的研究旨在评估低剂量的安全性和有效性， 鞘内注射SNX-111缓解慢性非恶性疼痛。药物将会是 通过植入的鞘内输液系统输送。剂量将是 每周滴定超过7周，直到达到止痛或直到 会出现无法忍受的副作用。

SNX-111 is a voltage-sensitive calcium channel blocker that specifically blocks neuronal (N-type) calcium channels. These channels are found in highest density within the substantia gelatinosa of the dorsal horn, where blockade of calcium influx has been shown to produce analgesia. The present study is designed to evaluate the safety and efficacy of low dose, intrathecal SNX-111 in relieving chronic, nonmalignant pain. Drug will be delivered via implanted intrathecal infusion system. Dose will be titrated weekly over 7 weeks until analgesia is achieved or until intolerable side effects occur.