A delivery system for delivering a shear-sensitive injectable material into the body of a mammal, such as a human being, acts as a mechanical feed that continuously mixes a shear-sensitive injectable material as it delivers the shear-sensitive injectable material to a target tissue, or to a site adjacent a target tissue. In one embodiment of the invention, the delivery system comprises an injector system including a rotatable mixing member coupled to a driving system. The injector system comprises a housing defining a lumen and having an output end and a driving system connection end and includes a rotatable mixing member for coupling to the driving system and for mixing and delivering the shear-sensitive injectable material. The driving system comprises a drive mechanism, an actuator capable of actuating the drive mechanism, and an interfacing member coupled to the drive mechanism for coupling with the mixing member to rotate the mixing member when the interfacing member is driven by the drive mechanism.
