Japanese professor Kanji Takada invents painless injections method


Scared of injections?  Kanji Takada, a professor of pharmacokinetics  (or the study of the absorption, distribution and fate of substances delivered to the human body) at Kyoto Pharmaceutical University has come up with a new method of delivering vaccines and drugs that is completely painless compared to regular injections.

Professor Takada  says the device he developed – a round vaccine “chip” measuring just 1.5 cm in diameter that contains as many as 300 micro needles that don’t break the dermis or second layer of skin to deliver drugs to the body. By penetrating just 0.5 millimetres before the needles dissolve and administer the vaccine, the patient feels no discomfort and there is no bleeding.  Each of the dozens of needles is a mere 0.5 mm long and 0.3 mm wide at the base and tests show that the efficiency of the vaccine is not adversely affected by the method of delivery.

Announced in 2010, it took Professor Takada six years to develop the new drug delivery system and “the patch can be used to deliver any type of vaccine and people are not frightened of having the injection because they feel nothing at all,” said Professor Takada.

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