DRUG GRADUAL RELEASE DEVICE

• Main Author: HIRAO ISAMI
• Format: Patent
• Language: English
• Published: 14.03.1990
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

PURPOSE:To replenish a drug by certainly supplying the drug to an objective region by providing a means for introducing the drug into the objective region to a drug gradual release base material made possible to replenish the drug to a living body from the outside. CONSTITUTION:A drug gradual release base material 1 is embedded in the region under the skin tissue 9 and the leading end part of an introducing member 6 is stayed in the vicinity of a lesion region 4. When a transmission signal is sent from a transmission signal generator 10 in this state, a piezoelectric element 13 is oscillated and driven to oscillate an ultrasonic wave and ceramic particles 3 are irradiated with the ultrasonic wave and vibrated to generate heat and the drug gradual release base material 1 is heated. Since the drug gradual release base material 1 is constituted of a mechanochemical gel, said base material is shrunk by a temp. rise and a drug 2 flows into the introducing member 6 to be guided to the lesion region 4. In order to replenish the drug 2, the needle 17 of a syringe 16 is thrust in the skin tissue 9 to pierce the drug gradual release base material 1. Next, the syringe 16 is operated to replenish the drug 2 to the drug gradual release base material.