APPARATUS FOR PAINLESS INTRAMUSCULAR OR SUBCUTANEOUS INJECTIONS
A painless injection apparatus (10) includes a first injector (18) having a first storage chamber (39) storing a numbing agent, a first needle (34), and a first plunger (38), and a second injector (20) having a second storage chamber (50) storing a medication, a second needle (54), and a second plunger (58). The injection apparatus (10) further includes a plunger actuation device (70) coupled to the first and second plungers (38, 58) and the second storage chamber (50). The plunger actuation device (70) is adapted to sequentially advance the first plunger (38), the second storage chamber (50), and then the second plunger (58) to inject the numbing agent and then the medication painlessly into a patient's tissues at the desired depths. The needles and medicine storage chambers are enclosed in a disposable portion of the injection apparatus which can be disposed of properly.