外科ob胶能抹在血管外科常见病上吗?

医用OB胶在肺部手术中的应用,医用手术防粘连凝胶,纽斯葆ob蛋白胶囊,ob蛋白瘦身胶..
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医用OB胶在肺部手术中的应用
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医用OB胶粘合肌腱防止粘连的实验研究
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中文摘要 医用0B胶粘合周围神经的实验研究 摘 要 目的:周围神经断裂是手外科中较为常见的外伤性疾病, 目前临床常用的方法是应用显微缝合技术修复损伤的神经,
但由于缝线存在异物反应,而且常规显微修复会进一步损伤
神经轴突,引起轴突组织错向生长,同时线结的牵拉力常会 影响神经断端的血运,这些都直接影响神经修复的效果。因
此,为了避免发生由缝线所引起的组织反应,寻找一种可以
代替缝合的简便、省时的修复方法,设计了医用0B胶粘合神 经的动物实验。0B胶是快速医用胶508系列之一,化学名为 a.氰基丙烯酸高级烷基脂,涂在组织表面,可借助其表面微 量水分或血液、组织液中的阴离子,迅速发生聚合而固化成 膜,起到粘接、止血等作用。OB胶有可吸收性,其降解产物 可被机体完全代谢吸收,不残留异物,无毒性反应。0B胶已 成功的应用于人的气管、食管、胃肠、心脏大血管、肾盂等 组织器官吻合术中,还用于创面止血、粘合伤口、肌腱等方 面,获碍满意效果,但尚未见用于粘合神经的实验报道。本 实验是以传统的神经外膜缝合法为对照,探讨医用OB胶粘 合神经外膜后的抗牵拉强度及神经修复效果,对于其粘合神 经的可行性进行评估,为临床上寻找一种简便、省时的神经
修复新方法及提供实验室依据。 方法:1、选健康成年雄性Wistar大鼠72只,体重250 300 g。随机将动物分为神经缝合组和粘合组,每组36只大 鼠。均以左侧坐骨神经建立修复模型。缝合组用9-0无创尼
――――――――――――――――――――――――――丁――――――――――――――――――――――一 申文摘要
龙线做神经外膜缝合4针,尽可能地保证两断端对合整齐、
正在加载中,请稍后...目的:肌腱损伤、断裂在手外科中极为常见,临床上常根据损伤的轻重程度和修复时期的不同,采取直接缝合或肌腱移植等多种方法进行修复。无论是哪种修复方法都离不开缝线,而缝线作为一种异物,不易被机体降解吸收,常引起不同程度的异物反应,过多的缝合导致肌腱断端坏死,加重粘连。同时线结的牵拉力常影响肌腱内血液循环,而不利于肌腱内源性愈合,腱周组织和血管长入肌腱断端后形成外源性愈合,较易形成粘连,使修复的肌腱没有足够的滑动范围或者在肌腱断端形成间隙,从而影响了术后功能的恢复。为了寻找一种不影响肌腱血供和肌腱愈合的修复方法,有效减轻肌腱粘连,我们进行了医用OB胶粘合肌腱的动物实验。OB胶系快速医用胶508系列之一,化学名为α-氰基丙烯酸酯,涂在组织表面,可借助其表面微量水分或血液、组织液中的阴离子,迅速固化成膜,起到粘接、止血等作用, OB胶已成功地应用于气管、食管、胃等空腔器官吻合术中。本实验以传统的改良Kessler缝合法为对照,探讨医用OB胶粘合损伤肌腱后的愈合过程和粘连程度,对医用OB胶粘合损伤、断裂肌腱,防止肌腱粘连的可行性进行评估,为临床上寻找一种简便、省时的肌腱修复新方法提供实验室依据。方法:1、选正常健康成年莱亨鸡42只,鸡龄为1~2年,体重1.6~1.8kg,按手术方法的不同分为三组:A组为将肌腱横断后,断端行改良Kessler缝合法进行修复;B组为肌腱横断后,断端行改良Kessler缝合, 于缝合口周围肌腱表面均匀涂抹一层OB胶,覆盖肌腱长度约0.5cm;C组为肌腱横断后不缝合,把肌腱两断端紧密对接,直接在肌腱的表面均匀涂抹OB胶,覆盖肌腱长度约0.5cm。2、于术后1、2、3、4、6、8周分批取材,每组3只,肉眼观察肌腱愈合、粘连情况。3、对各组标本切片用普通HE染色、Masson氏特殊染色,光镜下观察肌腱愈合情况及粘连状况。透射及扫描电镜观察细胞的功能状态。4、用ZL系列细胞参数分析系统对组织切片进行图象分析,于每张组织切片之腱周部位随机选取6个视野,测出每个视野的成纤维细胞总面积和胶原纤维含量,将测定得到的数据输入计算机进行分析。5、第2、4、6、8周分别取材,每次5只,用国产Y361-30型拉力机测定不同时期肌腱的抗张强度。 结果:1、大体解剖肉眼观察,术后各组均有不同程度的粘连,依粘连程度轻重不同,把粘连性状分为Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ度。在术后相同时间内比较A、B、C三组的粘连情况,总的趋势为B组和C组的粘连程度轻,多为Ⅰ度和Ⅱ度粘连,而A组的粘连程度较重,多为Ⅳ度和Ⅴ度粘连。从愈合情况看,C组较A、B两组愈合速度快。2、光镜下,各组肌腱的愈合过程基本相似,但愈合质量和愈合速度不同。相同时期内,C组的肌腱成纤维细胞增生活跃,向腱细胞转化的数量相对较多,合成的胶原纤维数量较多,腱束形成早,排列比较规则。3、透射电镜观察,在相同时期内,C组的成纤维细胞和腱细胞细胞器较丰富,胶原原纤维合成量较多,排列较规则,而A组的成纤维细胞和腱细胞细胞器较少,且多有扩张变形等改变,使胶原原纤维合成量较少,排列也不规则。4、图象分析结果,术后各周内成纤维细胞总面积和胶原纤维含量,A组与B组之间差异有统计学意义(P0.05)。5、不同时期肌腱抗张强度比较,术后相同时间内A组与B组之间无统计学差异(P$$0.05),2周时C组与A、B组有显著差异,4周后无统计学差异。结论:1、肌腱愈合过程中,早期成纤维细胞增生活跃,胶原合成增加,以后成纤维细胞逐渐减少,胶原合成功能减弱;在形态上,早期成纤维细胞多较幼稚,胞体和胞核较大,均为圆形,此后成纤维细胞逐渐拉长变为长梭形,胞核也逐渐拉长变细,细胞质逐渐减少,最终分化为成熟的腱细胞。胶原纤维的变化则表现为早期纤维较细,排列紊乱,随着术后时间的延长,这些粗细不等的胶原纤维经过反复聚合、交联和改建后,腱纤维变粗,同时排列方向趋向平行,在结构和功能上逐渐达到正常腱水平。2、OB胶可借助组织表面微量血液、组织液或水等阴离子迅速固化成膜。胶膜包裹在吻合口周围,形成了较好的物理屏障,使肌腱主要以内源性愈合方式修复,通过肌腱本身的成纤维细胞和腱细胞等增生,合成胶原纤维来桥接肌腱断端。另一方面,胶膜有一定的抗张强度,术后未发现肌腱断裂,吻合口的牵拉力主要通过胶膜作用在腱周膜上,对肌腱内部的血管不产生直接的压迫或切割作用,对吻合口的血运影响较小,使得OB胶修复的肌腱愈合情况好,速度快,粘连轻。术后3~4周OB胶开始降解,降解产物可被机体吸收。 3、肌腱缝合后涂抹OB胶与肌腱单纯缝合相比,胶膜包裹在吻合口周围,限制了外源性愈合成分的参与,肌腱周围组织细胞和新生血管难以长入断端,从而有效防止粘连。而应用OB胶后对肌腱的愈合无不良影响,肌腱愈合质量好,抗张强度无显著差异。
Objective: Having the control of conventional Modified Kessler suture technique, this experiment was designed to explore the healing process and adhesion degree of the tendons which had been sticked with OB glue, to evaluate the feasibility of repairing the injured tendons with OB glue and preventing adhesion, to supply experimental foundation for clinic finding a new, simple and speedy method of tendon repair.Methods: 1. 42 laiheng hens , which were normal and healthy, were used in the experiment. According to different repairing methods, they were divided into three groups: Group A, using the method of Modified Kessler suture technique after the ten Group B, after the tendon was sutured, using OB glue to coat the sutured tendon and the length was 0.5 Group C, without being sutured, used the method that was to smear with OB glue after the ends had been joined. 2. 1,2,3,4,6,8 weeks after the operation, three hens were killed in every group. Theconditions of tendon healing and adhesion were observed. 3. Every section was used for HE staining, Masson’ staining. The conditions of tendon were observed under light microscope, the function of cells was observed under transmission electron microscope and scanning electron microscope. 4. The picture analysis of the sections was dealt with ZL cell parameter analysis system. Put the data into computer and analysis. 5. 2,4,6,8 weeks after the operation, five hens were killed in every group. The tendon’ s breaking strength in different period was observed and analysis.Results: 1. There was adhesion of different degree in every group. According to the degree of adhesion, the adhesion was distinguished into Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅴ five grade. In the same period after operation , there was a tendency among A,B,C groups: the adhesion degree of group B and group C was slighter than that of group A, much of the adhesion was Ⅰ,Ⅱ grade. However, the adhesion of group A was Ⅳ,Ⅴgrade. Upon the condition of tendon healing ,the speed of group C was faster than that of group A and group B. 2. The healing process was similar in every group under light microscope, but the healing quality and speed was different. Compared to group A in the same period, the proliferation of fibroblast in group B and group C was more active, the quantity of fibroblast which had changed into tendon cell was larger, the amount of collagen fiber was more, the arrangement of collagen fiber was more regular. 3.Under the transmission electron microscope and scanning electron microscope, in the same period, the cell organelles in the fibroblast of group B and group C the amount of colla the arrangement of collagen fibrils was more regular than group A . But in the fibroblast of group A, the cell organelles wan much less and many cell organelles had the transformations which were dilation, deformation and so on, thus it made the collagen synthesis less and the arrangement of collagen fiber more irregular. 4. The picture analysis showed that, on the total area of fibroblast and the amount of collagen fiber, there was statistically significant difference between group A and group B, C in the same period. However, there was not statistically significant difference between group B and group C.
5. Tensile strength tests revealed that: there were no detectable differences in biomechanical parameters between group A and group B. In group C, two weeks after operation, the tensile strength was significantly less than that of group A and B. Strength increased with time, after four weeks, there was not statistically significant difference among the groups.Conclusion: 1.In the tendon healing process, the fibroblast was young and the proliferation was active, the ability of collagen synthesis was strong in the early period. Then the fibroblast was mature gradually and changed into tendon cell, its quantity decreased gradually, the ability ofcollagen
Collagen fiber ch
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