Stubblefield P G, Frederiksen M C, Berek J S, Gatter M A, Kayman D J, Borten M
Am J Obstet Gynecol. 1979 Sep 15;135(2):199-201. doi: 10.1016/0002-9378(79)90343-0.
We evaluated the cervical dilator device (CDD), an expanding balloon, as a substitute for laminaria tents before abortion at 13 to 16 1/2 weeks by extraction and vacuum curettage. The CDD was found to be an effective dilator, although it did not appear to have any advantage over laminaria tents when placed overnight and was associated with significant pain upon insertion and an apparent increased risk of endometritis. The present CDD or a subsequent modification may offer advantages over laminaria tents for short-term placement.
我们评估了一种宫颈扩张器装置（CDD），即一种可膨胀的球囊，作为13至16.5周妊娠时通过刮宫和真空吸宫术进行流产前海藻棒的替代品。结果发现CDD是一种有效的扩张器，尽管过夜放置时它似乎并不比海藻棒有任何优势，而且插入时会引起明显疼痛，且子宫内膜炎的风险明显增加。目前的CDD或后续的改进版本可能在短期放置方面比海藻棒具有优势。
