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Lea’s Shield是一新设计的阴道内屏障避孕方法,可于性交后持续使用26小时,有效的阻止精子进入宫颈内。Lea’s Shield由柔软、韧性好、无腐蚀性的硅铜制成。主要特征为碗状结构,其内通过一易弯曲的管,管内有9mm的空隙形成阀,以便于空气、分泌物、经血等排出。碗的边缘是一厚的“U”形控制环,
Lea’s Shield is a newly designed intravaginal barrier contraceptive that continues for 26 hours after sexual intercourse to effectively prevent sperm from entering the cervix. Lea’s Shield is made of soft, tough, non-corrosive silicon copper. The main features of the bowl-shaped structure, which through a flexible tube, the tube has a gap of 9mm to form the valve, in order to facilitate the discharge of air, secretions, menstrual blood and so on. The edge of the bowl is a thick “U” shaped control ring,