[Development of a magnetic urethral closure device--an animal experiment study].

The new magnetic closure device consists of a retropubically implanted magnet and another removable intravaginal magnet, which gently closes the urethra. This system has shown its proper function in Merino sheep during a period of observation up to 33 weeks. The pressure on the tissue can be adjusted by the size and strength of the removable magnet. By using smooth-edged magnets, no necrosis of the vaginal wall and urethra could be observed.