apparatus and method for catheterized delivery or infusion of medication and anaesthesia are disclosed . the perforating catheter is first used to perforate the periodontal ligament and / or the cortical plate of bone tissue , and is then left in place and used as a catheter for insertion of a hypodermic needle of smaller gauge to deliver medication or anaesthesia to a target area . the perforator is a bevelled needle for drilling into the ligament or bone tissue . for drilling , the device comprises an adaptor which transmits the rotational movement from a dental hand piece or the like to the bevelled needle . a cap is also included for protecting the bevelled needle during storage of the device . the adaptor may have a rod which extends axially into the bevelled needle when the device is assembled for drilling . the rod is used to prevent the debris resulting from drilling from blocking the passage in the bevelled needle . as well , the rod reinforces the needle and maintains the alignment between the perforator and the adaptor for improved drilling efficiency . an adapter is disclosed which couples with the catheter once in place easing access to supply medication to difficult to reach areas .