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自制长骨横搬器治疗糖尿病足创面的临床应用 被引量:1
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作者 吕乾 陈继根 +5 位作者 赵泽雨 浦绍全 陈向 陈汉芬 朱跃良 徐永清 《西南国防医药》 CAS 2020年第4期325-328,共4页
目的采用外固定(Ilizarov)原理,通过自制长骨横搬器对糖尿病足创面进行胫骨横搬术对治疗糖尿病足创面的疗效。方法 2015年7月~2017年9月医院收治的糖尿病足创面患者23例,采用自制长骨横搬器治疗,男性18例,女性5例,年龄45~78岁,平均61.5... 目的采用外固定(Ilizarov)原理,通过自制长骨横搬器对糖尿病足创面进行胫骨横搬术对治疗糖尿病足创面的疗效。方法 2015年7月~2017年9月医院收治的糖尿病足创面患者23例,采用自制长骨横搬器治疗,男性18例,女性5例,年龄45~78岁,平均61.5岁。结果 23例患者随访时间1~18个月,平均9.5个月,22例患者降低了截肢平面(截趾平面:趾趾关节、跖趾关节)且创面均为一期愈合,疼痛、麻木症状明显改善,创面愈合时间8~14 w,平均11 w,成功率为95.6%;其中有3例患者出现针道感染,并发症发生率为13.6%。1例患者因术后血糖控制较差且患肢感染严重,行膝关节截肢术,失败率4.4%。结论自制长骨搬移器治疗糖尿病足可促进创面愈合能力、降低截肢平面,从长远来看能有效提高患者的生活质量。 展开更多
关键词 长骨横搬器 糖尿病足 创面 外固定 愈合
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Microstructure and Properties of SiCp/Al Composite Materials Fabricated via Powder Packed Resistance Additive Manufacturing
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作者 Wang Wenqin chen jigen +3 位作者 Yan Xiaosong Han Zhaoxian Lin Gang chen Jie 《稀有金属材料与工程》 SCIE EI CAS 2024年第11期3035-3045,共11页
SiC particle(SiCp)/Al composite materials were fabricated via powder packed resistance seam welding additive manufacturing.The influence of welding speed on microstructure and mechanical properties of the specimen was... SiC particle(SiCp)/Al composite materials were fabricated via powder packed resistance seam welding additive manufacturing.The influence of welding speed on microstructure and mechanical properties of the specimen was investigated,elucidating the formation and fracture mechanism of single-pass multi-layer deposition.The results demonstrate that a dense internal structure of the specimen characterized by uniformly dispersed SiCp embedded within the Al matrix is formed.However,particle agglomeration and porosity defects are observed.The porosity increases with the increase in welding speed,and the microstructure of the RSAM-24 specimen has the highest density,characterized by a density of 2.706 g/cm^(3)and a porosity of 1.672%.The mechanical properties of the specimens decrease as the welding speed increases.Optimal mechanical properties are obtained when the welding speed is set as 24 cm/min.Specifically,the average hardness,tensile strength and elongation values are 463.736 MPa,52.16 MPa and 2.2%,respectively.The tensile specimens predominantly exhibit fracture along the interlayer bonding interface and the interface between the Al matrix and SiC particles,and the damage mode is ductile fracture. 展开更多
关键词 additive manufacturing resistance seam welding SiCp/Al hardness welding speed
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