DRUG DELIVERY SYSTEM CAPABLE OF DETECTING THE AMOUNT OF DRUGS INJECTED INTO A BODY BASED ON AN IMPEDANCE OF ELECTRODES

摘要

PURPOSE: A drug injection apparatus is provided to enable a user to accurately monitor the injection amount of drugs, and to reduce the pain of a patient for injecting the drugs by using a micro-needle. CONSTITUTION: A drug injection apparatus includes a drug injection unit(101), an electrode unit(102), a signal processing unit(103), and a display unit(104). The drug injection unit is partially inserted into the human body for injecting drugs. The electrode unit is partially injected to the human body by being formed around the drug injection unit, and changes the impedance by the injection of the drugs. The signal processing unit measures the impedance on the electrode unit, and calculates the concentration of the injected drugs. The display unit displays the injection amount of the drugs for users.