中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (16): 2473-2479.doi: 10.12307/2022.243

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

羧甲基化棉短绒止血纱布的制备及性能评价

柳小军1,徐玉茵1,刘康博1,周  静1,韩  颖1,熊  玥1,田  源2   

  1. 1河南省医疗器械检验所(河南省医疗器械检验检测工程技术研究中心),河南省郑州市   450000;2南阳市久康医疗器械有限公司,河南省南阳市   473000
  • 收稿日期:2020-10-19 修回日期:2020-10-22 接受日期:2020-11-19 出版日期:2022-06-08 发布日期:2021-10-29
  • 通讯作者: 周静,硕士,高级工程师,河南省医疗器械检验所(河南省医疗器械检验检测工程技术研究中心),河南省郑州市 450000
  • 作者简介:柳小军,男,1984年生,河南省开封市人,汉族,2011年河南工业大学毕业,硕士,工程师,主要从事生物医用材料研究。徐玉茵,女,1973年生,河南省开封市人,汉族,2007年河南中医学院(现河南中医药大学)毕业,硕士,高级工程师,主要从事医疗器械生物学评价方面的研究。
  • 基金资助:
    河南省科技攻关项目(202102310467),项目负责人:柳小军

Preparation and properties of carboxymethylated cotton linters hemostatic gauze

Liu Xiaojun1, Xu Yuyin1, Liu Kangbo1, Zhou Jing1, Han Ying1, Xiong Yue1, Tian Yuan2   

  1. 1Henan Medical Equipment Inspection Institute (Henan Medical Equipment Inspection and Testing Engineering Technology Research Center), Zhengzhou 450000, Henan Province, China; 2Nanyang Jiukang Medical Device Co., Ltd., Nanyang 473000, Henan Province, China
  • Received:2020-10-19 Revised:2020-10-22 Accepted:2020-11-19 Online:2022-06-08 Published:2021-10-29
  • Contact: Zhou Jing, Master, Senior engineer, Henan Medical Equipment Inspection Institute (Henan Medical Equipment Inspection and Testing Engineering Technology Research Center), Zhengzhou 450000, Henan Province, China
  • About author:Liu Xiaojun, Master, Engineer, Henan Medical Equipment Inspection Institute (Henan Medical Equipment Inspection and Testing Engineering Technology Research Center), Zhengzhou 450000, Henan Province, China Xu Yuyin, Master, Senior engineer, Henan Medical Equipment Inspection Institute (Henan Medical Equipment Inspection and Testing Engineering Technology Research Center), Zhengzhou 450000, Henan Province, China
  • Supported by:
    the Key Scientific and Technological Project in Henan Province, No. 202102310467 (to LXJ)

摘要: 文题释义:
羧甲基化棉短绒止血纱布:是以棉短绒纱布为原料,采用氢氧化钠溶液对其进行碱化处理,使其溶胀形成纤维素钠,然后采用氯乙酸溶液进行醚化处理,再经过纯化及干燥过程而制得的吸水性强且可溶于水的纤维素醚化衍生物,主要成分是羧甲基纤维素钠。
凝血性能:通过体外全血凝固时间测试来评价材料的凝血性能。取样品置于试管中水浴处理,加入新鲜抗凝兔血,水浴后加入氯化钙溶液,继续水浴的同时开始计时,观察血液是否流动,直至血液完全凝固。通过观察全血凝固时间可以直观地评价材料的凝血性能,全血凝固时间越短说明凝血效果越好。

背景:目前棉短绒及其改性制品在清理水或油污染方面受到广泛关注,然而将其用于止血纱布的制备尚未见报道。
目的:以棉短绒纱布为原料改性制备一种羧甲基化棉短绒止血纱布,并对其进行表征。
方法:以棉短绒纱布为原料,通过化学改性制备羧甲基化棉短绒止血纱布。采用红外光谱仪、扫描电镜和X射线衍射仪表征棉短绒纱布(原料组)、羧甲基化棉短绒止血纱布(实验组)与可吸收止血纱布(对照组)的形貌结构,通过测定吸水率、力学性能、凝胶化速率和溶解性等检测3种纱布的理化指标,通过检测全血凝血时间评价3种纱布的止血性能,通过体外细胞毒性实验评价实验组纱布的细胞相容性。

结果与结论:①红外光谱显示,实验组纱布发生了羧甲基化反应,纤维结构中引入了亲水性羧甲基基团;X射线衍射结果显示,原料组的晶相较完整,实验组和对照组的晶相不完整,结晶较差;②扫描电镜显示,原料组纤维呈直线状且排列整齐紧密;实验组纤维编织方式未发生改变,但排列松散,纤维直径增加,表面粗糙度增加;对照组纤维具有独特的编织方式,纤维表面细长光滑且纹理清晰;③3组纱布的孔隙率比较差异无显著性意义(P > 0.05);实验组的吸水率大于原料组(P < 0.05),小于对照组(P < 0.05);④实验组和对照组均在吸水后30 s内形成凝胶,并在1 h内完全溶解;⑤实验组的拉伸强度小于原料组(P < 0.05),与对照组比较差异无显著性意义(P > 0.05);实验组的断裂伸长率大于原料组(P < 0.05),小于对照组(P < 0.05);⑥实验组的全血凝固时间短于原料组(P < 0.05),与对照组比较差异无显著性意义(P > 0.05);实验组纱布具有良好的细胞相容性;⑦结果表明,羧甲基化棉短绒止血纱布具有良好的理化性能、止血性能和细胞相容性。

https://orcid.org/0000-0002-2897-1795 (柳小军)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料口腔生物材料纳米材料缓释材料材料相容性;组织工程

关键词: 材料, 棉短绒纱布, 羧甲基化, 理化性能, 形貌结构, 止血性能, 细胞相容性

Abstract: BACKGROUND: At present, cotton lint and its modified products have been widely concerned in cleaning water or oil pollution, but the preparation of cotton lint for hemostatic gauze has not been reported. 
OBJECTIVE: To prepare a kind of carboxymethylated cotton linters hemostatic gauze by modifying cotton linters gauze and characterize it.
METHODS:  Carboxymethylated cotton linters cotton gauze was prepared by chemical modification. Infrared spectrometer, scanning electron microscope and X-ray diffractometer were used to characterize the morphology and structure of cotton linter gauze group (raw material), carboxymethylated cotton linter hemostatic gauze (experimental group) and absorbable hemostatic gauze (control group). The physical and chemical indexes were measured by water absorption, mechanical properties, gelation rate and solubility. The hemostatic performance was tested by measuring whole blood coagulation time. At last, the cytocompatibility of gauze in the experimental group was evaluated by cytotoxicity test in vitro.  
RESULTS AND CONCLUSION: (1) The result of infrared spectrum showed that carboxymethylation occurred in the gauze from experimental group, The hydrophilic carboxymethyl group was introduced into the fiber structure. X-ray diffraction results showed that compared with the raw material group, the crystal phase of the experimental and the control groups was incomplete with the crystallinity decreased. (2) Scanning electron microscope result showed that the fibers of the raw material group were straight and tightly arranged. In the experimental group, the fiber braiding mode was not changed, but the arrangement was loose, the fiber diameter was increased, and the surface roughness was increased. In the control group, the fiber had a unique weaving mode; the fiber surface was long and thin, smooth and the texture was clear. (3) There was no significant difference in porosity among the three groups (P > 0.05). The water absorption rate of the experimental group was higher than that of the raw material group (P < 0.05) and lower than that of the control group (P < 0.05). (4) Both the experimental group and the control group formed gel within 30 seconds after water absorption, and completely dissolved within 1 hour. (5) The tensile strength of the experimental group was lower than that of the raw material group (P < 0.05), but there was no significant difference between the experimental and the control groups (P > 0.05). The fracture elongation of the experimental group was higher than that of the raw material group (P < 0.05) and lower than that of the control group (P < 0.05). (6) The blood coagulation time in the experimental group was shorter than that in the raw material group (P < 0.05), while it did not differ from the control group significantly (P > 0.05), indicating that the gauze in the experimental group had good cytocompatibility. (7) The results suggested that carboxymethylated cotton linters hemostatic gauze presented good physical and chemical properties, hemostatic properties and cellular compatibility.

Key words: material, cotton lintes gauze, carboxymethylated, physical and chemical properties, structure, hemostatic performance, cytocompatibility

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