Annulus fibrosus and nucleus pulposus integrated composite biphasic scaffold and construction method thereof
A composite biphasic, construction method technology, applied in prosthesis, medical science and other directions, to avoid immune rejection, a wide range of material sources, good biocompatibility and degradability
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[0047] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0048] 1. Preparation of acellular decalcified bone matrix gelatin rings
[0049] Fresh porcine femoral head cancellous bone was used as raw material, trimmed to make a hollow bone ring with an outer diameter of 10 mm, an inner diameter of 5 mm, and a thickness of 3 mm, and decellularized and decalcified at room temperature. Add 1500ml of chloroform-methanol mixture to 50g of cancellous bone, soak for 24h; ② soak in 0.6mol / L HCl for 48h; ③2 mmol / L CaCl 2Treatment for 1 hour; ④ Soak in 0.5 mmol / L ethylenediaminetetraacetic acid (EDTA) for 1 hour; ⑤ Treat with 8 mmol / L lithium chloride (LiCl) for 1 hour; ⑥ Soak in 5% Triton-100 for 24 hours; ⑦ Deionization Rinse with water repeatedly and set aside.
[0050] 2. Preparation of decellularized nucleus pulposus matrix microfilament suspension
[0051] Collect the nucleus pulposus tissue from the pig tail,...
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