Division of Laryngology, Department of Otology and Laryngology, Massachusetts Eye and Ear Infirmary and Harvard Medical School, Boston, Massachusetts 02114-3096, USA.
Laryngoscope. 2012 Apr;122(4):865-7. doi: 10.1002/lary.22181. Epub 2012 Feb 17.
Our objective was to describe an injection needle modification for awake in-office vocal fold injections through a percutaneous transthyrohyoid approach. Two separate 45° angle bends are created at the hub and 1 cm from the needle tip of a 25-gauge, 1.5-inch needle. After adequate endolaryngeal anesthesia, the needle is passed via the thyrohyoid membrane into the airway. The needle tip is at a 90° angle to the syringe, providing access to the entire vocal fold surface, regardless of chin position or thyroid cartilage angulation. The bend at 1 cm also serves as a marker to measure the depth of the needle within the soft tissue. The double-bend needle modification allows for complete access to the entire length of the true vocal fold in one pass as well as a marker to measure depth of the needle in the tissue. Limitations may include bleeding from the injection site, insufficient needle length in patients with a long anterior-posterior dimension of the larynx, and potential difficulty passing a needle through a calcified thyrohyoid membrane.
我们的目的是描述一种经皮经甲状舌骨膜入路的清醒门诊声带注射用注射针改良方法。在 25 号、1.5 英寸的针的针座和距针尖 1 厘米处分别形成两个单独的 45°角弯曲。在充分的内喉麻醉后，将针穿过甲状舌骨膜进入气道。针尖与注射器成 90°角，可到达整个声带表面，无论颏部位置或甲状软骨角度如何。1 厘米处的弯曲也可用作测量针在软组织内深度的标记。双弯针改良方法可在一次穿刺中完全进入真声带的整个长度，并可作为测量针在组织内深度的标记。局限性可能包括注射部位出血、对于喉前后径较长的患者针的长度不足以及通过钙化的甲状舌骨膜穿针可能有困难。
