Polyurethane cervix uterus repairing film and preparation method thereof
A technology of polyurethane film and polyurethane diaphragm, which is applied in the field of medical accessories, can solve the problems of infection, weak stability, water resistance, etc., to enhance the therapeutic effect and ensure the effect of continuous drug administration
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Embodiment 1
[0038] S1-1 Dissolve polyurethane in chloroform solution to make a 15% solution, and use electrospinning technology to spin a diaphragm with a pore size of 10-150 μm and a thickness of 0.1-0.2 mm, which is a medical polyurethane diaphragm;
[0039] S1-2 Apply the sodium hyaluronate gel evenly on the medical polyurethane membrane obtained in step S1-1, and dry or dry the acquired polyurethane cervical repair membrane.
Embodiment 2
[0041] S2-1 Dissolve polyurethane in chloroform solution to make a 15% solution, PVP is made into a 15% solution with ethanol, and use electrospinning technology to spray against each other, spinning into a pore size of 1-150 μm with a weight ratio of 1:1 , a medical polyurethane diaphragm with a thickness of 0.05-0.1mm.
[0042] S2-2 On one side of the medical polyurethane diaphragm prepared in step S2-1, evenly coat a layer of polylysine PU (prepared into 1% hydrogel for later use), which forms the polyurethane cervical repair of this embodiment membrane.
Embodiment 3
[0044] S3-1 Dissolve polyurethane in chloroform solution to make 15% chloroform solution, and use electrospinning technology to spin into a membrane with a porous structure with a pore size of 10-300 μm and a thickness of 0.2-0.3 mm to form medical polyurethane Diaphragm;
[0045] S3-2 Sodium alginate is made into a gel, evenly coated on the medical polyurethane diaphragm obtained in step S3-1, and dried or air-dried to form the polyurethane cervical repair membrane of this embodiment.
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