The CER-FLEX device incorporates a flexible cannula and patented technology that limits both air from leaking into the aspiration syringe and peripheral blood dilution during aspiration. It's flexible shaft make it able to take a curved trajectory to provide greater geographic sampling. The T-handle introducer needle can be inserted by mallet, by hand or using a drill. The optional k-wire stylet replaces the standard stylet when using a drill to advance the introducer cannula. The k-wire stylet on the flex cannula is meant to allow for powered advancement by a drill. The flex cannula fits coaxially through the introducer handle. The greater geographic access of the cannula affords a clinician the ability to sample from a larger geographic area of the bone, limiting the need for additional punctures of the cortical wall that would be required to access the same location using a straight cannula. This device can be used in conjunction with the CER-BN-84 bone dowel harvesting device and CF-G 25X50 bone graft strip. Combining marrow aspirate with autogenous bone and a graft extender allows clinicians to fill boney defects using the patient’s own cells as the engine for bone healing. The combination of all three provide cells, signals and a scaffold; the building blocks for repairing bone.