Hoffmann-la Roche Inc.

Werner Erni

Martin List

A method and a needleless injection system for administering a medication. In order to simplify as far as possible the handling necessary for loading the injector with medication and thereby eliminate risks caused by a complex handling the method and system according to the invention provide loading of medication into a needleless injector device by means of a syringe prefilled with a medication, this loading step preferably including connecting the syringe to the injector device by means of a suitable coupling member or adapter and operating the syringe for transferring medication prefilled therein into the injector device. After this transfer the syringe and/or the coupling member or adapter are detached from the injector device, which is then ready to be operated for ejecting the loaded dosage of said medication from the injector device and thereby pass the selected dosage through the skin of an injection receiver.

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Therwill, Switzerland

Werner Erni