Magnesium alloy anastomosis nail with fine control performance and preparation method thereof
A magnesium alloy and staple technology, which is applied in the field of precision-controlled magnesium alloy staples and its preparation, can solve the problems of low tip strength and poor plasticity of the curved part, and achieve the goal of not breaking easily, improving strength, and ensuring performance Effect
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Embodiment 1
[0021] In this embodiment, the composition of the Mg-2Zn-0.5Mn-0.1Nd alloy is by weight percentage: 2% Zn, 0.5% Mn, 1% Nd, and the balance is Mg.
[0022] Preparation method: Mg-2Zn-0.5Mn-0.1Nd rods with a diameter of 8mm are drawn into 0.3mm wires by cold drawing, the drawing rate is 0.02m / s, and the above wires are prepared through a U-shaped staple mold To form a staple, use an ultra-fine resistance wire with a diameter of 0.6mm to bend the staple ( figure 1 ) for annealing heat treatment at a temperature of 300° C. for 30 s. The U-shaped staple was loaded into the stapler and deformed into a B-shape. The results showed that the B-shape remained intact and did not break. Such as figure 2 As shown, the stapler of the present invention was further used for anastomosis of the large intestine of pigs. The results showed that the staples could smoothly penetrate the tissue of the large intestine of pigs. coincidentally. After the anastomotic pig large intestine was injected...
Embodiment 2
[0024] In this embodiment, the composition of the Mg-2Zn-0.2Mn-0.5Nd alloy is by weight percentage: 2% Zn, 0.2% Mn, 0.5% Nd, and the balance is Mg.
[0025] Preparation method: The Mg-2Zn-0.2Mn-0.5Nd rod with a diameter of 10mm is drawn into a 0.3mm wire by cold drawing, and the drawing rate is 0.01m / s, and the above wire is prepared through a U-shaped staple mold To form a staple, use an ultra-fine resistance wire with a diameter of 0.5mm to bend the staple ( figure 1 ) for annealing heat treatment at a temperature of 330° C. for 28 s. The U-shaped staple was loaded into the stapler and deformed into a B-shape. The results showed that the B-shape remained intact and did not break. Further, the staples of the present invention were used for anastomosis of the large intestine of pigs, and the results showed that the staples could smoothly penetrate the tissue of the large intestine of pigs. , performed a water injection pressure test on the pig large intestine after anastomos...
Embodiment 3
[0027] In this embodiment, the composition of the Mg-0.4Zn-2Nd alloy is by weight percentage: 0.4% Zn, 2% Nd, and the balance is Mg.
[0028] Preparation method: Mg-0.4Zn-2Nd rods with a diameter of 9mm are drawn into 0.3mm wires by cold drawing at a drawing rate of 0.03m / s, and the above wires are prepared into staples through a U-shaped staple mold , using ultra-fine resistance wire with a diameter of 0.6mm to bend the staple ( figure 1 ) for annealing heat treatment at a temperature of 290° C. for 50 s. The U-shaped staple was loaded into the stapler and deformed into a B-shape. The results showed that the B-shape remained intact and did not break. Further, the staples of the present invention were used for anastomosis of the large intestine of pigs, and the results showed that the staples could smoothly penetrate the tissues of the large intestine of pigs. , performed a water injection pressure test on the anastomotic pig large intestine, and found that the burst pressur...
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