In order to realize the parametric design of the conjugate cam weft insertion mechanism,according to the necessary parameters of weft insertion process,ideal kinematic curves of the weft insertion mechanism were given...In order to realize the parametric design of the conjugate cam weft insertion mechanism,according to the necessary parameters of weft insertion process,ideal kinematic curves of the weft insertion mechanism were given,and the mathematical model of reverse solution for this mechanism was established.The parameters of this mechanism were obtained by reverse solution on the basis of the given ideal kinematic curves and kinematic requirements.The parametric design platform which was integrated with the functions of parametric reverse solution,motion simulation,three-dimensional modeling and virtual assembly was developed based on VB.NET and Unigraphics(UG) NX.After entering the technological parameters of weft insertion process and essential structural parameters by users,three-dimensional drawing of the main parts such as the conjugate cam and shaft,can be obtained by this platform,also the processing data of the cam can be calculated.This platform provides a rapid approach for parametric design of weft insertion mechanism.展开更多
目的自行设计制作的新型经外周静脉置入中心静脉导管(peripherally inserted central catheter,PICC)握力器,并评估其可应用性。方法2017年1月至2018年1月,便利抽样法选择某医院中心静脉导管室置入PICC患者113名为研究对象,按时间先后...目的自行设计制作的新型经外周静脉置入中心静脉导管(peripherally inserted central catheter,PICC)握力器,并评估其可应用性。方法2017年1月至2018年1月,便利抽样法选择某医院中心静脉导管室置入PICC患者113名为研究对象,按时间先后将其分为对照组(n=59)和观察组(n=54)。对照组使用传统PICC握力器,而观察组使用新型PICC握力器。比较两组患者穿刺点渗血渗液、导管堵塞(血栓)并发症及患者、家属的满意度。结果观察组患者穿刺点没有出现渗血和导管堵塞(血栓),而对照组渗血和导管堵塞(血栓)发生率分别为13.6%(8/59)、10.2%(6/59),差异均有统计学意义(均P<0.01)。观察组患者满意度优于对照组患者差异有统计学意义(P<0.001)结论新型PICC握力器可减少导管并发症发生,且能提高PICC置管的安全性和便捷性。展开更多
基金National Natural Science Foundation of China (No.50875243)Natural Science Foundation of Zhejiang Province,China (No.Y1110100)
文摘In order to realize the parametric design of the conjugate cam weft insertion mechanism,according to the necessary parameters of weft insertion process,ideal kinematic curves of the weft insertion mechanism were given,and the mathematical model of reverse solution for this mechanism was established.The parameters of this mechanism were obtained by reverse solution on the basis of the given ideal kinematic curves and kinematic requirements.The parametric design platform which was integrated with the functions of parametric reverse solution,motion simulation,three-dimensional modeling and virtual assembly was developed based on VB.NET and Unigraphics(UG) NX.After entering the technological parameters of weft insertion process and essential structural parameters by users,three-dimensional drawing of the main parts such as the conjugate cam and shaft,can be obtained by this platform,also the processing data of the cam can be calculated.This platform provides a rapid approach for parametric design of weft insertion mechanism.
文摘目的自行设计制作的新型经外周静脉置入中心静脉导管(peripherally inserted central catheter,PICC)握力器,并评估其可应用性。方法2017年1月至2018年1月,便利抽样法选择某医院中心静脉导管室置入PICC患者113名为研究对象,按时间先后将其分为对照组(n=59)和观察组(n=54)。对照组使用传统PICC握力器,而观察组使用新型PICC握力器。比较两组患者穿刺点渗血渗液、导管堵塞(血栓)并发症及患者、家属的满意度。结果观察组患者穿刺点没有出现渗血和导管堵塞(血栓),而对照组渗血和导管堵塞(血栓)发生率分别为13.6%(8/59)、10.2%(6/59),差异均有统计学意义(均P<0.01)。观察组患者满意度优于对照组患者差异有统计学意义(P<0.001)结论新型PICC握力器可减少导管并发症发生,且能提高PICC置管的安全性和便捷性。
