Tissue engineering vessel and preparation method and application thereof
A technology of tissue engineering and blood vessels, applied in the field of tissue engineering blood vessels and its preparation, can solve the problems of uneven distribution of extravascular cells, unsuitability for cell migration and proliferation, and poor performance, and achieve rich collagen fibers, moderate hardness, and excellent The effect of the characteristic
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Embodiment 1
[0031] Example 1 Preparation of tissue engineered blood vessels of the present invention (1)
[0032] 1 Materials and methods
[0033] 1.1 Preparation of gelatin / polycaprolactone electrospun membrane
[0034] Weigh 0.5g of gelatin and 0.5g of polycaprolactone with an electronic analytical balance, dissolve them in 10ml of trifluoroethanol, stir for 24 hours until completely dissolved, and obtain gelatin / polycaprolactone with a concentration of 10% (g / ml) for spinning solution, add 10 μl acetic acid to the solution, and stir for 10-20 min until the solution turns from cloudy to clear. Select a 10ml syringe and a needle with an inner diameter of 1.2mm to extract the gelatin / polycaprolactone spinning solution, fix it on the electrospinning device, adjust the electrostatic voltage to 10kv, the acceptance distance to 12cm, and the injection rate to 2ml / h. Spinning, using aluminum foil as a receiving device, spinning for 3 hours to obtain a gelatin / polycaprolactone composite nan...
Embodiment 2
[0054] Example 2 Preparation of tissue engineered blood vessels of the present invention (2)
[0055] The preparation method is the same as in Example 1, except that the prepared rectangular gelatin / polycaprolactone electrospun membrane has a width of 2 cm and a length of 13 cm; The urinary catheter is curled into a tubular shape by the "egg roll" method, and the number of coils is: 13cm / (6×3.14)=6.9 circles. Results: The prepared tissue-engineered blood vessels were the same as those in Example 1, with clear borders, good elasticity, moderate hardness, smooth inner walls, and independent support into tubes when placed flat; HE sections showed dense tissue structures and uniform cell distribution, Masson Staining showed that collagen fibers were abundant in the constructed tissue engineering blood vessels.
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