以往采用的豚鼠灌胃法是将胃管沿动物上腭壁滑行插入食道,进而插入胃内灌药,或应用木制的开口器,把导尿管通过开口器中央的孔插入胃内。上述方法的缺点是:①操作麻 The guinea pig gavage method used in the past is to slide the gastric tube along the animal’s palatal wall into the esophagus, and then insert the drug into the stomach or use a wooden opener to insert the catheter into the stomach through the hole at the center of the opener. Disadvantages of the above method is: ① operating Ma