The present disclosure provides a system for injecting a drug eluting construct in a patient. The construct includes multiple cellular based microcaspules, wherein the multiple cellular based microcapsules create at least one of a plurality of layers or sections of microcapsules joined together to comprise an implant. There is a medicinal agent within the microcapsules. A syringe and needle inject the implant constructed of microcapsules into the patient at least one of during and after a surgical procedure. The medicinal agent controllably releases into the patient both immediately and at a delayed time.

An implantable device (101) for drug delivery to a patient, the device comprising a housing (103) defining an enclosed space (106), a catheter port (102) that provides fluid access to the enclosed space, a permeable release zone (105) that permits drug release from the enclosed space, and an attachment portion (104) for attaching the housing at a location, such that, in use, the implantable device can be placed within the body of the patient and attached, using the attachment portion, at a location such that the release zone is adjacent to a treatment site, and whereby a drug composition in fluid form can be provided to the enclosed space via a catheter (108) and the catheter port, and the drug can be released to the treatment site via the permeable release zone.