体外膜肺氧合经编膜织物自适应张力的低损伤制备  

Low-damage preparation of extracorporeal membrane oxygenationwarp knit membrane fabrics with adaptive tension

作　　者：席立锋 蒋高明[1] 马丕波 贾伟 张红斌 王佳冕 夏风林 张琦 刘海桑 XI Lifeng;JIANG Gaoming;MA Pibo;JIA Wei;ZHANG Hongbin;WANG Jiamian;XIA Fenglin;ZHANG Qi;LIU Haisang(Engineering Research Center for Knitting Technology,Ministry of Education,Jiangnan University,Wuxi,Jiangsu 214122,China;National Innovation Center for Advanced Medical Devices,Shenzhen,Guangdong 518110,China)

机构地区：[1]江南大学针织技术教育部工程研究中心,江苏无锡214122 [2]国家高性能医疗器械创新中心,广东深圳518110

出　　处：《纺织学报》2024年第7期1-9,共9页Journal of Textile Research

基　　金：深圳市科技重大专项课题(202327D238);中央高校基本科研业务费专项资金资助,江苏省研究生科研与实践创新计划项目(KYCX24_2547)。

摘　　要：针对体外膜肺氧合(ECMO)系统中使用的氧合膜织物国产化制备技术难题,进行了ECMO系统用经编膜织物低损伤制备及其透气性能研究。采用特种特里克型经编机开展了不同送经量下的氧合膜织物制备实验,分析了聚甲基戊烯(PMP)中空纤维膜丝的编织损伤机制;提出一种自适应张力控制下的ECMO系统用氧合膜织物低损伤制备方法,对比分析了采用该方法制备的氧合膜织物性能指标。实验结果表明:基于氧合膜织物提出的自适应张力控制方法可有效调控经纱张力的“削峰补谷”缺陷,实现氧合膜织物的低损伤制备;用该法制备的ECMO系统用氧合膜织物纵密为20横列/cm,编织位置外径损失3%,强力损失5%;编织前后N 2通量衰减17%,CO_(2)通量衰减12%,O_(2)通量衰减14%;同时,氧合膜织物平整度、密度、气通量等均已达到国外同类产品水平。Objective Extracorporeal membrane oxygenation(ECMO)is used to provide continuous extracorporeal blood oxygenation to patients with severe cardiopulmonary failure to maintain the patients′life.The ECMO device consists of an oxygenator,a centrifugal pump,and a control system,of which the oxygenator is the core component for accomplishing the blood oxygenation.This study addresses the problem of technological gaps in the preparation of separation membrane fabrics for oxygenators and presents a study on the low-damage preparation of ECMO membrane fabrics based on warp knitting technology.Method Through the stitch analysis of membrane fabrics made from polymethylpentene(PMP)hollow fibers membrane,the parameters such as knitting stitch,yarn type and other fabric specifications of membrane fabrics were determined.The knit fabrics were manufactured on the special Tricot warp knitting machine from PMP hollow fiber membrane.Based on the experimental results and the understanding of the knitting equipment,warp yarn tension was identified as one of the main influencing factors affecting the damage of the PMP hollow fiber knitting.An adaptive warp yarn tension control method was proposed with the Tricot warp knitting machine through the PID control strategy design and the fifth degree polynomial curve planning,aiming to achieve low-damage knitting of PMP hollow fiber.Results The results showed that the damage of prepared ECMO membrane fabrics was mainly caused by the mismatch of yarn demand between the warp feed and knitting action at constant speed.The knitting tension amplitudes at 900,1000,and 1100 mm/rack warp feed were 28,23,and 19 cN,respectively,which led to the attenuation of PMP hollow fiber strength,outer diameter,and air flux.The ECMO membrane fabrics were prepared using the adaptive tension control method.The warp tension amplitude in a single cycle was regulated from 2.4-23 cN to 3-10 cN at the warp feed of 1000 mm/rack,and the tension fluctuation amplitude was reduced by 56.5%.The results of ECMO film fabric p

关 键 词：医用纺织品 体外膜肺氧合系统用氧合膜织物 聚甲基戊烯中空纤维膜丝 经编织物 低损伤制备方法 透气性能 

分 类 号：TS181.8[轻工技术与工程—纺织材料与纺织品设计] TS183.3[轻工技术与工程—纺织科学与工程]