可降解锌合金血管支架的研究现状、面临的挑战与对策思考
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钱漪, 袁广银
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Research Status, Challenges, and Countermeasures of Biodegradable Zinc-Based Vascular Stents
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QIAN Yi, YUAN Guangyin
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表1 可降解锌基合金在体内、体外降解速率[4,5,26~35]
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Table 1 In vivo and in vitro degradation rate of degradable Zn-based alloy[4,5,26-35]
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Alloy | Preparation process | In vitro (immersion test) | In vivo | Ref. |
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| | mm·a-1 | mm·a-1 | | Zn | As-drawn | | 0.012 (45 d) | [4] | | | | 0.05 (180 d) | | Zn-0.8Cu | As-extruded & as-drawn | | 0.016 (180 d) | [5] | Zn-Li | As-drawn | | 0.08 (60 d) | [26] | | | | 0.046 (12 months) | | Zn | As-extruded | 0.022 | SBF (20 d) | | [27] | Zn-Mg | As-extruded | 0.084 | Hank's (14 d) | | [28] | Zn-Ag | As-extruded | 0.015 | Hank's (28 d) | | [29] | Zn-Cu | As-extruded | 0.033 | SBF (20 d) | | [27] | Zn-Ca | As-rolled | 0.089 | Hank's (14 d) | | [30] | Zn-Sr | As-rolled | 0.098 | Hank's (14 d) | | [30] | Zn-0.05Zr | As-extruded | 0.014 | Hank's (28 d) | | [29] | Zn-3Cu-0.1Mg | As-extruded | 0.022 | Hank's (20 d) | | [31] | Zn-3Cu-1Mg | As-extruded | 0.043 | Hank's (20 d) | | [31] | Zn-3Cu-0.5Fe | As-extruded | 0.064 | SBF (20 d) | | [32] | Zn-3Cu-1Fe | As-extruded | 0.069 | SBF (20 d) | | [32] | Zn-0.35Mn-0.41Cu | As-rolled | 0.050 | SBF (14 d) | | [33] | Zn-0.75Mn-0.40Cu | As-rolled | 0.065 | SBF (14 d) | | [33] | Zn-1.5Mg-0.1Mn | As-cast | 0.080 | Hank's (30 d) | | [34] | | | 0.065 | Hank's (90 d) | | | Zn-Mg-0.1Mn | As-rolled | 0.115 | Hank's (30 d) | | [34] | | | 0.070 | Hank's (90 d) | | | Zn-Mg-Ca | As-extruded | 0.090 | Hank's (56 d) | | [35] | Zn-Mg-Sr | As-extruded | 0.095 | Hank's (56 d) | | [35] | Zn-Ca-Sr | As-extruded | 0.109 | Hank's (56 d) | | [35] | Zn-Ag-0.05Zr | As-extruded | 0.017 | Hank's (28 d) | | [29] |
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