必须使用一次性针头。
结论应用一次性注射针头进行老年人胸骨骨髓穿刺，具有方便、快捷、安全、损伤小、取材好等优点。
Conclusions the bone marrow puncture with disposable syringe needle is a convenient, quickly and safe method for the elder patient with little side effect and it is worth popularizing.
方法利用一次性注射器针头采用双针劈核法劈开晶状体核，小切口囊外摘除，植入后房型人工晶体。
Methods To chop nucleus by two disposable needles, extract nucleus through the small incision, and implant intraocular lens.
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