DENTAL IMPLANT FOR REPLACING TOOTH AND FOR CONTINUOUS, LONGTERM, PAIN- FREE, SYSTEMIC AND LOCAL DRUG DELIVERY - A NEW DESIGN WITH A NOVEL INTERNAL CONNECTTION. FOR USE IN THE ALVEOLAR BONE, AND IN ORTHOPAEDICS. WITH A SCAFFOLD OR A REMOVABLE CARTRIDGE FOR CONTROLLED DRUG DELIVERY. IMPLANT PLACEMENT AND SCAFFOLD RETRIEVAL TOOLS AND IMPLANT CONES AS MEDICATED SCAFFOLDS FOR USE IN ROOTCANALS

摘要

This invention relates to an innovation of designing and use of dental implant as drug delivery devices. A porous dental implant has a space within the implant for a scaffold carrying medications .The abutment is screw free. A cervical ring secures the abutment and provides retention. The abutment also has a central vent with multiple accessory lateral vents for refilling the scaffold whenever necessary. The opening in the abutment can be closed with a disposable cap. The abutment and the implant body have a novel involute spline connection which prevents micro movements and rotation. The tight adaptation between the inner walls of the cervical ring and the outer walls of the abutment prevents micro-leakage. In case of solid dental implants, a removable cartridge for carrying medication made of a biocompatible and semi-permeable material can be used to deliver the drugs in a controlled manner through the oral, sublingual or buccal route. This implant design provides a continuous, long term, pain-free, systemic and local drug delivery along with replacement of the missing teeth. The dental implant design can also be used in orthopedics to deliver drugs locally.