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

Preparation of the test solution: Take 9 samples, take the samples out of the package, withdraw the introducer sheath from the proximal end, and cut the whole sample into about 0.5cm long after exiting the introducer sheath. Weigh 15g and divide them into 3 parts. Each tube of the experimental group was added with 5 g of sample, and then added 10 ml of sodium chloride injection; the negative control was added with 10 mL of sodium chloride injection into each tube; the positive control group was added with 10 mL of distilled water, and three tubes were prepared in parallel for each group, all of which were placed in a 37ºC water bath. Incubate for 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.