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腭大孔为腭大管的开口,腭大管又与翼腭窝相通。翼腭窝内有颌内动脉的分支——蝶腭动脉及腭降(后)动脉穿行,并容纳蝶腭神经节及上颌神经。腭大孔注射在临床上常用于鼻后孔止血,牙科麻醉,鼻窦手术时麻醉止血以及减轻蝶腭神经痛。腭大孔位于硬腭边缘,第三磨牙内侧,软硬腭交界前方约5mm 处。由于舌的位置及动度,软硬腭交界线模糊不清,腭大管的垂直方向,腭大孔有时很难定位及进入。本文介绍一种很易进入腭大孔的注射技术。方法取5ml 注射针管1支,配27号,3.81cm(1 1/2)时针头,抽取5ml1%利多卡因(含1:100000肾上腺素)。将针头弯成45°角。在软硬腭交界处喷洒10%的利多卡因。1分钟后,将一个两面用木质压舌板置于软硬腭交界线上,以使交界线变得更明显,同时拉紧覆盖腭大
Palate large hole for the opening of the palatal duct, the palatal duct and the pterygopalatine interlinked. The pterygopalatine fossa has a branch of the internal mammary artery - the sphenopalatine artery and the palatal (posterior) artery, and accommodates the sphenopalatine ganglion and the maxillary nerve. Palatal foramen magnum injection clinically used in the posterior orifice of the nose to stop bleeding, anesthesia, sinus surgery anesthesia to stop bleeding and reduce sphenopalatine neuralgia. Palate large hole located in the edge of the hard palate, the inside of the third molars, soft and hard palate in front of about 5 mm junction. Due to the position and movement of the tongue, the boundary between the soft and hard palats is blurred. The vertical direction of the palatal duct and the large hole of the palate are sometimes difficult to locate and enter. This article describes a very easy to enter the large hole of the palate injection technique. Methods Take 5ml injection needle 1, with No. 27, 3.81cm (1 1/2) hour needle, extract 5ml1% lidocaine (containing 1: 100,000 epinephrine). Bend the needle at a 45 ° angle. Spray 10% lidocaine at the junction of the hard and soft palate. After 1 minute, place a double-sided wooden tongue depressor on the interface between the soft and hard palate so as to make the borderline more visible,