自制骨粉收集器在开放乳突根治术中的应用

Clinical application of a self-developed bone dust collector in mastoid cavity obliteration following mastoidectomy

目的介绍自行研制的骨粉收集器的制作,并观察其在开放乳突根治术中的应用。方法2017年4月至2018年3月拟行开放乳突根治术的成年患者随机数字法分为两组,分别采用自制骨粉收集器(用气管插管、注射器、无纺布及吸痰管制作)和传统方法收集制备乳突骨皮质骨粉,并填充开放乳突腔。采用SPSS 23.0软件分析比较两组骨粉收集制备的量和所用时间,随访术后乳突感染情况。结果骨粉收集器组和传统方法组分别纳入33例和31例患者,两组在年龄、性别构成、乳突硬化型/板障型比例等方面差异均无统计学意义(P值均>0.05)。骨粉收集器组收集骨粉质量的中位数为1.8克,所需时间中位数为4.0min,传统方法组收集骨粉的质量为1.1克(中位数),所需时间为6min(中位数),两组比较,差异均有统计学意义(P值均<0.05)。术后随访3~6个月,均无骨粉感染。结论利用临床常用材料制作的骨粉收集器简单、经济,能明显提高乳突根治术中骨粉收集效率。

Objective To introduce a self-developed bone dust collector designed by the authors and evaluate its efficiency in mastoid obliteration following mastoidectomy.Methods Consecutive patients, from April 2017 to March 2018,who prepared to receive mastoidectomy were randomly divided into two groups,and in each group the bone dust was harvested by self-developed bone dust collector or by conventional used method respectively in mastoidectomy.The amount of the harvested bone dust and the time consumed in the collecting procedure were compared between two groups.The infection of the bone dust after mastoid obliteration was also evaluated during follow up.Results 33 patients were recruited in bone dust collector group,and 31 patients in conventional method group.There is no significance of difference between two groups in sex ratio,age and pneumatization of mastoid cells (P >0.05 for all).The median amount of bone dust harvested by bone dust collector was significantly larger than that collected by conventional method (1.8g vs 1.1g,P <0.05).The median time spent in bone dust collector group was significantly shorter than that spent in conventional method group (4minutes vs 6minutes,P <0.05).No bone dust infection was found in the follow-up in all patients.Conclusion The present self-developed bone dust collector is a easy and useful apparatus which can significantly improve the efficiency of collecting bone dust in mastoidectomy.