Fluid path set with turbulent mixing chamber, backflow compensator

A fluid path set configured for delivering a mixture of a first injection fluid and a second injection fluid from a fluid injector to a patient, the fluid path set comprising:

• a first fluid line having a proximal end and a distal end, the proximal end of the first fluid line fluidly connectable to a source of the first injection fluid;
• a second fluid line having a proximal end and a distal end, the proximal end of the second fluid line fluidly connectable to a source of the second injection fluid;
• a flow mixing device in fluid communication with the distal ends of each of the first and second fluid lines at a proximal end of the flow mixing device, the flow mixing device comprising:
• a housing having a proximal end opposite a distal end along a longitudinal axis, and a first portion at the distal end and a second portion at the proximal end, the first portion and the second portion joined together at a seam extending around an outer perimeter of the housing about the longitudinal axis;
• a first fluid port extending through the second portion and in fluid communication with the distal end of the first fluid line for receiving the first injection fluid from the fluid injector and a second fluid port extending through the second portion and in fluid communication with the distal end of the second fluid line for receiving the second injection fluid from the fluid injector, the first fluid port and the second fluid port being substantially parallel with the longitudinal axis and radially offset relative to the longitudinally axis;
• a mixing chamber disposed within the first portion between the proximal and distal ends of the housing, the mixing chamber being in fluid communication with the first and second fluid ports for mixing the first and second injection fluids;
• a third fluid port extending through the distal end of the housing and in fluid communication with the mixing chamber for discharging the mixture of the first and second injection fluids;
• a turbulent flow inducing member disposed within the mixing chamber for promoting turbulent mixing of the first and second injection fluids;
• and
• a third fluid line in fluid communication with the flow mixing device at the third fluid port at the distal end of the flow mixing device,
• wherein the seam has a radial collar surrounding a base surface on one of the first portion and the second portion, and a flange on the other of the first portion and the second portion such that the flange is received within the radial collar, and
• wherein the second portion encloses an open end of the first portion at the seam.