利用带有银－氯化银不极化电极的双腔导管，通过胃造瘘置管于小肠，测定新西兰大白兔小肠吸收葡萄糖、乳糖、甘氨酸、亮氨酸的诱发电位（ＰＤ）值，最大诱发电位值（ＰＤ＿（ｍａｘ））及最大半饱和浓度（ＣＫ）。结果证明该装置可清晰地显示诱发电位图像，通过计算能计算出小肠单位面积最大的吸收功能及输入溶液的最佳浓度，作为临床评定小肠吸收功能的一种定性、定量指标。 The double-lumen catheter with silver-silver chloride nonpolarization electrode was used for catheterization in the small intestine through gastric gastrostomy, and the value of PD induced by glucose, lactose, glycine and leucine in the small intestine of New Zealand rabbits was measured. Evoked potential value (PD_ (max)) and the maximum half-saturation concentration (CK). The results show that the device can clearly display the evoked potential image, can calculate the absorption capacity of the small intestine per unit area and the optimal concentration of the input solution, as a qualitative and quantitative index for clinically evaluating the intestinal absorption function.