供试液的制备：取9件样品，将样品从包装取出后，从近端退出导引鞘，退出导

供试液的制备：取9件样品，将样品从包装取出后，从近端退出导引鞘，退出导引鞘后整体取样均截成约0.5cm长小段，称取15g均分成3份。试验组每管加入样品5g，再加入氯化钠注射液10ml;阴性对照每管加入氯化钠注射液10mL；阳性对照组每管加入蒸馏水10mL，每组平行制备三管，全部放入37ºC水浴中保温30min。

Preparation of test solution: take 9 samples. After taking the samples out of the package, withdraw the guide sheath from the proximal end. After withdrawing the guide sheath, the whole sample is cut into small segments about 0.5cm long, weighed 15g and divided into 3 parts. In the test group, 5g samples were added to each tube, and 10ml sodium chloride injection was added; Add 10ml sodium chloride injection into each negative control tube; In the positive control group, 10ml distilled water was added to each tube, and three tubes were prepared in parallel in each group. All tubes were put into a 37 º C water bath for 30 minutes.

Preparation of test solution: Take 9 samples, take them out of the package, and then withdraw from the proximal end of the guide sheath. After withdrawing from the guide sheath, the whole sample is cut into small pieces about 0.5cm long, and 15g is weighed and divided into 3 parts. In the test group, 5g samples were added to each tube, and then 10ml sodium chloride injection was added. 10mL； sodium chloride injection was added to each tube of negative control; In the positive control group, 10mL distilled water was added to each tube, and three tubes were prepared in parallel in each group, all of which were put into 37ºC water bath for 30min.