Antibacterial medical suture and production method thereof
A technology of suture and tensile strength, which is applied in the field of antibacterial medical suture and its preparation, which can solve the problems of skin tissue dyeing, difficult coating processing, low adhesion between substrate and coating, etc., to prevent wound infection , Accelerate the healing of infected wounds and reduce the effect of antibiotic application
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[0025] The antibacterial medical suture thread of the present invention uses titanium-nickel memory alloy wire as a base material and adopts a DC magnetron sputtering method to deposit a silver ion plating layer on the surface of the base material. The preparation method thereof includes the following steps:
[0026] 1) Substrate preparation:
[0027] Select the prepared titanium-nickel memory alloy wire, the diameter of the alloy wire is 0.10~0.5mm, the phase transition temperature is 33℃, the shape memory is a straight line, and it is wound on a stainless steel reel. The medical alloy wire meets the YY / 0816-2010 medical industry standard Regulations: After repeated bending test and torsion test (deflection angle from zero position 40°, bending times is 20, and torsion times is 10), the metal wire should not be broken, and there should be no visible cracks on the surface; mechanical properties: tensile resistance Strength ≤400Mpa, elongation ≥10%;
[0028] 2) Target preparation:
[...
Example Embodiment
[0102] Example 1
[0103] An antibacterial medical suture thread, using titanium-nickel memory alloy wire as a substrate, and depositing a silver ion plating layer on the surface of the substrate by a DC magnetron sputtering method. The preparation method thereof:
[0104] The titanium-nickel memory alloy wire is selected as the base material, the wire diameter is 0.2±0.01 mm, the phase transition temperature is 33°C, the shape memory is linear, and the mechanical properties meet the requirements of the YY / 0816-2010 pharmaceutical industry standard: repeated bending test and torsion test , The metal wire should not be broken, and there should be no visible cracks on the surface; the tensile strength is 375Mpa, and the elongation rate is 19%.
[0105] After the stains on the surface of the substrate are removed, it is placed in the vacuum chamber of the winding continuous DC magnetron sputtering equipment, using high-purity silver as the sputtering target, using a hollow cylindrical i...
Example Embodiment
[0107] Example 2
[0108] An antibacterial medical suture thread, using titanium-nickel memory alloy wire as the base material, and using medium frequency magnetron sputtering to deposit a silver ion plating layer on the surface of the base material. The preparation method thereof:
[0109] The titanium-nickel memory alloy wire is selected as the substrate, the diameter of the wire body is 0.15mm±0.01, and the performance of the substrate: the phase transition temperature of the substrate is 33℃, and the shape memory is a straight line. The mechanical properties meet the requirements of the YY / 0816-2010 pharmaceutical industry standard: After repeated bending tests and torsion tests, the metal wire should not be broken, and there should be no visible cracks on the surface; tensile strength 385Mpa, elongation 15%.
[0110] After the stains on the surface of the substrate are removed, it is placed in the vacuum chamber of the winding continuous intermediate frequency magnetron sputter...
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