Abstract: A device (1) is used to generate a jet of liquid for pressurized irrigation or decontamination of wounds or infected areas of the body. It is provided with a liquid container (2), with means for generating a liquid pressure, and with a nozzle (5) which is arranged at the end of a flexible conduit (4) and from which the jet of liquid emerges. The liquid container (2) is designed as a pressurized container which can be connected via a valve (3) to a gas cartridge (11) or a compressed-air attachment and to which the flexible conduit (4) leading to the nozzle (5) can be joined. The liquid container (2) can be connected to the conduit (4) via a shut-off member or control member (7). A simple device (1) is thereby made available which can be easily transported and can also be sterilized without difficulty.