最近,美国北卡罗来纳州国际家庭健康机构的研究人员设计、发明了一种新型避孕套——塑料避孕套,它和乳胶避孕套相比,不仅具有弹力强、失败率低的优点,而且使用时也相当舒适。国家健康协会为此给予这个非赢利性医学研究机构130万美元的实验经费,由一批自愿参加试验的夫妇进行临床试验,以确定这种塑料避孕套的安全性、有效性及可接受性。 Recently, a researcher at the International Family Health Institute in North Carolina, USA, devised a new type of condom, a plastic condom, that not only offers the advantages of high elasticity and low failure rate when compared to latex condoms, Also quite comfortable. To this end, the National Institutes of Health awarded $ 1.3 million in experimental funding to a non-profit medical research institute to conduct a clinical trial of a group of couples who volunteered to determine the safety, efficacy and acceptability of such plastic condoms.