| 摘要 |
[Problem] To provide a drug injection device and a drug injection method which are capable of increasing drug injection efficiency at deep parts of a solid organ such as the brain and of improving therapeutic effects for pathological changes that require a drug injection into the deep parts of a solid organ such as the brain. [Solution] A long and narrow insertion body (11) with a solid interior is provided such that a tip (11a) thereof is capable of being inserted into a solid organ of a patient. The insertion body (11) has a groove (11b) on a side thereof along the longitudinal direction. An ultrasonic wave generation unit (12) comprises: an oscillator (21) which vibrates ultrasonically; and an oscillation transmission member (22) which connects the oscillator (21) and the insertion body (11) so as to transmit ultrasonic vibration of the oscillator (21) to the insertion body (11) and which is formed such that the outer diameter thereof tapers from one end part that is in contact with the oscillator (21) toward another end part that is in contact with the insertion body (11). A tube (13) is provided so as to be capable of discharging the drug into the patient's solid organ from a tip. The tip of the tube (13) is inserted into the groove (11b) of the insertion body (11). |
