Devices and methods are provided for use in the treatment of bladder cancer by locally administering oxaliplatin into the bladder of a patient to achieve a sustained concentration of oxaliplatin in urine in the bladder sufficient to produce a therapeutic concentration of oxaliplatin in bladder tissue. The oxaliplatin may be delivered into the bladder from an intravesical drug delivery device inserted into the bladder, wherein the device continuously releases the oxaliplatin into the urine in the bladder over an extended period of hours or days.
