| 摘要 |
PURPOSE: A micro jet drug delivery system and a micro jet injector are provided to safely and effectively inject drug solution without pain. CONSTITUTION: A micro jet drug delivery system comprises a micro jet injector(1), an energy focusing device(2), and a connecting adapter. The micro jet injector comprises a pressure chamber(10), a membrane(30), a medicament chamber(20), and a micro jet nozzle. Inside the pressure chamber, a pressure propel solution is filled. An elastic membrane is arranged to form a closed space by blocking one side of the pressure chamber. The medicament chamber accepts the drug solution inside the internal space. The micro jet nozzle includes a micro jet nozzle which micro jet sprays the drug solution stored inside the drug chamber. The energy focusing device generates bubbles in the liquid for pressure propulsion. [Reference numerals] (AA) Laser; (BB) Impact wave; (CC) Implact wave due to extinction of bubble; (DD) First microjet; (EE) Second microjet; (FF) Third microjet
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