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Development of a new thoracoswpic cardiovascular surgicall systems with CCD camera

新型CCD相机胸腔心血管手术系统的研制

基本信息

批准号：
14370406
负责人：
WATANABE Go
金额：
$ 8.13万
依托单位：
KANAZAWA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

项目摘要

[Introduction]Off-pump CABG became standard for ischemic heart diseases, and the endovascular therapy came to be an important treatment strategy for the peripheral arterial diseases today. However, the intracardic operations or the aortic operations have not been established like this less invasive procedures, because the enough view is not gotten with the filled blood. Usage of the heart-lung machine is still indispensable for these operations now, and the incidence of postoperative complications is also high. An epoch-making treatment like as stentgrafting custody is developed, and there are several problems to be.solved. In this report, we developed the devices for less-invasive intracardiac and aortic surgeries. These basic experiments were performed by pigs.1.Development of the angioscopeThe improvement was added to the angioscope as follows; The balloon made of the urethane was inflated by CO_2. The satisfied view was obtained.. No damage in the aorta was caused because of the ba … More lloon expansion. The thrombosis was not detected by this procedure.2.Development of the catheter with staplerThe catheter type stapler was designed. The anastmosis between the artificial graft and the aorta was performed easily and safely.3.Development of catheter type post-dolatation deviceThe dilatation devise was made of metallic wire instead of the balloon. There was no significant aortic damage by the post-dilatation. The fixation between the artificial graft and the aorta was increased.4.Intracardic operationBy ultrasonic CCD camera, the intracardiac structures were observed. Experimental ASD closure was tried. The observation by the ultrasonic CCD camera was easil and clearly. However, the device size is too large, and it is difficult to use this device clinically now.5.Aortic surgery using new devicesThe devices developed by this experiment 1, 2, and 2 was totally examined. Under angioscopic observation, the stentgraft deployment was smoothly. Furthermore, the staplers were effective.[Conclusion]In this series, The attractive devices for cardiovascular surgery were developed. Though there are several problems for clinical trial, the technical innovation will solve in future. Less

[引言]非体外循环冠状动脉旁路移植术已成为缺血性心脏病的标准治疗方法，血管内治疗已成为当今外周动脉疾病的重要治疗策略。然而，心内手术或主动脉手术还没有建立这样的微创手术，因为填充的血液不能获得足够的视野。目前，心肺机仍是此类手术不可缺少的设备，术后并发症的发生率也较高。支架置入术是一种划时代的治疗方法，但仍有许多问题有待解决。在这份报告中，我们开发了微创心内和主动脉手术的设备。1.血管镜的研制对血管镜作了如下改进：用聚氨酯制成的气囊充入CO_2。取得了满意的效果。主动脉没有损伤是因为 ...更多信息拉法扩张2.带吻合器导管的研制设计了带吻合器的导管型吻合器。3.导管式后扩张器的研制用金属丝代替球囊制成后扩张器。后扩张未造成显著的主动脉损伤。4.心内手术应用超声CCD摄像机观察心内结构。尝试了实验性ASD闭合。超声波CCD摄像机的观察结果清晰、直观。然而，该装置尺寸太大，并且目前难以将该装置用于临床。5.使用新装置的主动脉手术对本实验1、2和2开发的装置进行了全面检查。在血管镜下观察，覆膜支架顺利展开。此外，吻合器有效。[结论]该系列器械为心血管外科手术提供了一种新的、有吸引力的器械。尽管临床试验还存在一些问题，但技术创新将在未来解决。少