Automatic administration instrument for medical use

An automatic administration instrument for medical use for injecting a drug solution filled in a syringe, the automatic administration instrument comprising:

• a body for housing the syringe and an injection needle;
• a first motor for sliding the syringe within the body in a direction toward the tip a tip of the injection needle such that the injection needle protrudes from the body;
• a second motor for operating the syringe to administer the drug solution;
• a switch provided on the body, the switch being configured to activate the first motor and the second motor in sequential order while a part of an exterior of the body is being pressed against a body region of a patient to which the drug solution is to be administered;
• a notification section for notifying a user of operation states in the slide operation of the needle and/or the administration operation of the drug solution, wherein the notification section is a sound generator;
• and
• a microprocessor configured to control the notification section in response to the operation states,
• wherein, when the switch is pressed, the first motor is activated such that the needle protrudes from the body to perform a puncture at a patient site, and then the second motor is activated such that the drug solution is administered, and thereafter the second motor is stopped and the first motor is restarted to remove the needle when the administration of the drug solution is completed, and
• the microprocessor is configured to control the notification section to change sound tone in response to the operation states in the slide operation of the needle and the administration operation of the drug solution.