This invention is directed to spiro-oxindole compounds of formula (I): wherein k, j, Q, R 1 , R 2a , R 2b , R 2c , R 2d , R 3a , R 3b , R 3c , and R 3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of preparing and using the compounds are also disclosed.本發明係針對式(I)螺-吲哚酮化合物:;(I);其中k,j,Q,R1,R2a,R2b,R2c,R2d,R3a,R3b,R3c及R3d均如本文定義,作為其立體異構物、對掌異構物、互變異構物,或其混合物;或其藥學上可接受之鹽、溶劑合物或前體藥物,其可用於治療及/或預防鈉通道所媒介之疾病或症狀,譬如疼痛。亦揭示包含該化合物之醫藥組合物,及製備與使用該化合物之方法。