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由腭大孔进翼腭管达翼腭窝阻滞麻醉上颌神经的方法国内外均早有报道。翼腭管的平均长度为31mm,19％为弯曲的,以往的方法要求注射针由腭大孔进针,深达30mm左右,经过翼腭管直接将麻醉药注入翼腭窝内的上颌神经周围,由于19％弯曲翼腭管阻碍进针而降低了该麻醉方法的成功率。翼腭管内为丰富的血管,神经,长针注射时易于刺破血管神经,也可因注射针刺入圆孔进入颅内而引起严重的并发症,所以临床上尚未广泛采用该麻醉方法。笔者认为在翼腭管的中段或前段推药,在注射压力的作用下,药物可被灌注到翼腭窝内而发挥麻醉作用。为了证实该设想,特设计用短针进入翼腭管麻醉上颌神经的方法,经实验及临床应用,均取得了满意的效果。
From the palatal foramen into the wing of the palatal pterygopalatine fossa maxillary nerve block method both at home and abroad have long been reported. The average length of the wing of the palatal palate 31mm, 19% of the curved, the previous method requires the injection needle from the large hole into the palate, deep 30mm or so, through the cleft palate tube directly into the pterygopalatine anesthesia around the maxillary nerve , The success rate of the anesthesia method was reduced because of the 19% flexion of the wing of the palate that hindered the needle. Pterygopalatine tube is rich in blood vessels, nerves, long needle injection easily punctured vascular nerves, but also because of injection needle into the hole into the intracranial and cause serious complications, so the clinical practice has not yet widely used the anesthesia. I believe that in the middle or anterior segment of the pterygium, the drug can be infused into the pterygopalatine fossa to exert the anesthetic effect under the action of the injection pressure. In order to confirm this idea, we specially designed the method of anesthetizing the maxillary nerve with short needle into the palatal palate and achieved satisfactory results through experiments and clinical application.