A device for temporarily preventing flow of urine out of the urethra in a person suffering from urine incontinence comprises a first composition (11) enclosed in a first container (10) capable of being fed into the urethra (17) which is thereby blocked. The first container (10) comprises a mouthpiece (12) for insertion into the urethra (17) and for transport of the first composition (11) from the container (10) into the urethra (17). The first composition (11) comprises or is capable of forming a gel for blocking of the urethra by a gelatinous plug. The plug may be mechanically removed if the person wishes to urinate; alternatively the device may comprise a second composition in a second container for removal of the gel plug. In the latter alternative injection of the second composition in the urethra (17) adjacent to the gel plug causes the breakdown of the plug. Also disclosed is a corresponding method and the use of the first and second compositions in urine incontinence.
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