FIELD: medicine.SUBSTANCE: invention refers to medical equipment, namely to medical drug delivery devices, and in specific embodiments - to drug injectors configured for the percutaneous administration of a pre-set amount of a medical drug. A drug delivery system comprises two drug injectors. The first injector comprises the first main body and the first cap. The first main body comprises the first type-one drug container, the first drug outlet and the first drug ejector unit from the first container through the first outlet. The first cap is configured to be detachably mounted on the first main body to cover the first drug outlet, and provided with the first label identifiable by the user and standing for the first type of the drug. The second drug injector comprises the second main body and the second cap. The second main body comprises the second type-two drug container, the second drug outlet and the second drug ejector from the second container through the second outlet. The second cap is configured to be detachably mounted on the second main body to cover the second drug outlet, and provided with the second label identifiable by the user and standing for the second type of the drug.. The cap and main body of each drug injector are provided with a pair of mutually coupled key structures preventing the first cap from mounting on the second main body and the second cap from mounting on the first main body. The drug injectors being parts of the drug delivery system are based on the same technological platform, so they contain at least 50% interchangeable parts.EFFECT: invention simply and effectively reduces a probability of a false drug choice by the user.10 cl, 5 dwgИзобретение относится к медицинской технике, а именно к устройствам для доставки медицинских препаратов, а в конкретных вариантах осуществления - к инъекционным устройствам, выполненным с возможностью чрескожного введения заданного количества лекарственного средства. Система для доставки лекарственны
