Techniques to resolve the difficult cannulation cases include tapered tip catheter, guide wire, papillotome, and precut endoscopic papillotomy (EPT).

对于较困难之病例，尖细型管子，导引线方法，电刀及内视镜乳突先前切开术乃解决方法。

Conclusion: Canalization with COOK guide wire under TV hysteroscope is available in clinical treatment of fallopian tube obstruction.

输卵管插管及COOK导丝用于电视宫腔镜下输卵管阻塞的治疗，能有效疏通输卵管，显著提高输卵管的通畅率。