Abstract: An attachment for a loss of resistance syringe of the type used for inserting a epidural needle into the epidural space of a patient for administration of anesthesia includes an elastomeric band attached between diametrically opposed points of a ring dimensioned to slide onto the barrel and be retained against finger flange on the syringe, the band having a length such that an intermediate portion engaged to a thumb end of the syringe piston will bias the piston for return from a drawn to a depressed position for injecting the syringe contents, the band being characterized in that the bias is insufficient to inject the fluid into tissues normally encountered between the skin and the epidural space of a patient.