The invention discloses a
vascular stent containing a
biodegradable polymer coating, which belongs to the medical field. The preparation method is as follows: step 1, inserting the
bacterial strain into a medium for cultivation, and culturing at 25-30°C for 40 hours; Step 2. Inoculate the above-mentioned culture solution into the
fermentation medium according to the
inoculation amount of 5%, and cultivate it at 25-30°C for 48 hours; Step 3.
Centrifuge the above-mentioned
fermentation solution for 20 minutes, collect the cells, and heat them in a water bath. Take the supernatant, drain the water, and prepare
polylysine; step 4: dissolve 2-amino-3-p-hydroxyphenylpropionic acid
monomer and
peroxide initiator in an
organic solvent to prepare a solution; Secondly, it is mixed with the prepared
polylysine powder, and the mixture is grafted and modified by melt
grafting reaction equipment to obtain
polylysine grafted 2-amino-3-p-hydroxyphenylpropionic acid biodegradable
polymer.