Singh S K, Jain P, Sinha J K
Department of Surgery, Banaras Hindu University, Varanasi, India.
Br J Plast Surg. 1999 Mar;52(2):149-51. doi: 10.1054/bjps.1998.3029.
Low-voltage electrical injuries are relatively uncommon. Injury caused by flow of heavy current due to short-circuiting a low-voltage battery has not been described in the English literature. A 9-year-old boy connected two thin household electrical wires to the two terminals of a 6 volt (lead accumulator) battery and pressed the other two ends between his teeth. This resulted in a blast causing a compound comminuted fracture of the mandible and extensive tissue damage in the oral cavity. The low internal resistance of a lead accumulator (approximately 0.03 ohms) permits the flow of a heavy current (approximately 200 amps) when short-circuited. This instantaneously vaporises a minuscule portion of wire at approximately 2000 K resulting in a sudden rise of intraoral pressure to 30 kg cm-2 leading to tissue damage.
低压电损伤相对少见。因低压电池短路导致强电流通过而造成的损伤在英文文献中尚无描述。一名9岁男孩将两根细的家用电线连接到一个6伏（铅蓄电池）电池的两个电极上，并将另外两端咬在牙齿之间。这导致了一次爆炸，造成下颌骨复合粉碎性骨折以及口腔内广泛的组织损伤。铅蓄电池的低内阻（约0.03欧姆）在短路时允许强电流（约200安培）通过。这会瞬间将一小部分电线在约2000K的温度下汽化，导致口腔内压力突然升至30千克/平方厘米，从而造成组织损伤。
