一种用于锤骨骨骼化和中耳解剖的21号注射针头技术。

文献信息

中文摘要

背景： 中耳显微解剖步骤——如锤骨骨骼化、去除镫骨上结构软组织以及鼓索神经解剖——需要高度精确，以防止因过度机械力或变钝的手术器械导致的听骨链脱位、感音神经性听力损失或味觉障碍。
方法： 通过将标准一次性21号皮下注射针头的针座牢固地插入标准耳科显微器械手柄的后端，开发了一种易得且低成本的显微器械。针尖具有尖锐的顶端和双向斜切锐边，通过切向和锯式微动作为一次性显微刀替代品。因此，在尖头镐、镰状刀和显微刀片因各种原因变钝而无法提供足够锋利度的情况下，它可以帮助外科医生。
结论： 这种易得的技术在每种情况下都能提供持续锋利的切割边缘，便于安全的切向切口，并为精细的耳科解剖提供了实用选择。

英文摘要

BACKGROUND: Middle ear micro-dissection steps-such as malleus skeletonization, removal of soft tissue from the stapes suprastructure, and chorda tympani dissection-require a high level of precision to prevent ossicular luxation, sensorineural hearing loss, or taste disturbances that can be caused by excessive mechanical forces or dulled surgical instruments.
METHOD: An accesible and low-cost micro-instrument was developed by firmly inserting the hub of a standard, disposable 21-gauge hypodermic syringe needle onto the back end of a standard otological micro-instrument handle. The needle tip, featuring a sharp apex and bidirectional beveled sharp edges, functions as a disposable micro-knife alternative through tangential and saw-like micro-movements. Thus, it can come to the surgeon's aid in situations where pointed picks, sickle knives, and micro-blades become dull for various reasons and fail to provide sufficient sharpness.
CONCLUSION: This accessible technique provides a consistently sharp cutting edge in every case, facilitating safe tangential incisions and offering a practical option for delicate otologic dissections.