支架

Stent should be soft, with good lateral bending property, and diameter of the stent should be 1.0-2.0 mm longer than the actual stenosis. Implantation technique should be improved. These can reduce extrusion and cutting action of the atheromatous plaque due to balloon dilatation and stent expansion, and prevent plaque defluxion during implantation. Filter protection device is used to filter tissue debris and to prevent microemboli entering cerebral circulation, which can elevate safety of carotid stent implantation.

选择相对柔软的，侧弯性能较好，且直径应比狭窄处实测直径大1.0~ 2.0 mm的支架，提高置入操作技术，可以减轻支架置入过程中球囊扩张及支架膨胀时对粥样斑块的挤压与切割作用，防止斑块脱落，同时使用滤器脑保护装置以过滤较大组织碎片，阻止较大微栓子进入脑循环，提高颈动脉支架置入的安全性。

RESULTS: Stent materials play an important role in reducing inflammatory reaction and restenosis following stent implantation. As a medical material for humans, the features of stent should be meet the requirements of reliable distensibility, mechanical persistence, good flexibility and geometrical stability, possible small diameter, excellent blood compatibility, as well as good corrosion resistance. All of these depended on the mechanical and physical features of materials.

结果：支架材料的选择在减少机体炎症反应的强度和持续时间，减少支架置入后血管内再狭窄的发生起着重要的作用，作为人体医用材料，对支架各方面性能都提出了很高的要求，包括可靠的扩张性和力学持久性、良好的柔韧性和几何稳定性、尽可能小的外径，优异的血液相容性和耐蚀性，而支架上述特性都依赖于材料的力学和物理特性。

As a medical material for humans, the features of stent should be meet the requirements of reliable distensibility, mechanical persistence, good flexibility and geometrical stability, possible small diameter, excellent blood compatibility, as well as good corrosion resistance.

结果：支架材料的选择在减少机体炎症反应的强度和持续时间，减少支架置入后血管内再狭窄的发生起着重要的作用，作为人体医用材料，对支架各方面性能都提出了很高的要求，包括可靠的扩张性和力学持久性、良好的柔韧性和几何稳定性、尽可能小的外径，优异的血液相容性和耐蚀性，而支架上述特性都依赖于材料的力学和物理特性。

This research method is to use the three-dimensional mapping software to draw the cardiovascular stent of different size first , next is it create their cardiovascular stent boundary conditions and simulation their of support after implantation according to finite element method into the human body to go; Receive different residue pressures and pressure of the repeated blood circulation , greatest stress , meets an emergency and the relation between total deformation amount caused; Being imitated the cardiovascular stent , the position with damage of fatigue life in the blood vessel by its greatest stress value at the same time ; But by the simulation result of the above , can understand that use life of Palmaz-schatz cardiovascular stent has been more than 109 up till now ; At the same time , can know the position where the stress two times concentrates , the right angle position joined in the rib and rib of Palmaz-schatz cardiovascular stent too.

本研究的方法乃是先会使用三维绘图软体画出不同尺寸的血管支架，然后在根据有限元素法去设定其血管支架的边界条件和模拟其植入人体后；受到不同的残留压力与反覆血液流动的压力，所造成的最大应力、应变及总变形量之间的关系；同时在由其最大应力值去模拟血管支架，在血管中的疲劳寿命与疲劳损坏位置；然而由以上的模拟结果，可以了解到目前Palmaz-schatz血管支架之使用寿命为109以上；同时也可以知道二次应力集中的位置，在Palmaz-schatz血管支架之肋和肋连接的直角位置。

Conclusions— The most powerful histological predictor of stent thrombosis was endothelial coverage. The best morphometric predictor of LST was the ratio of uncovered to total stent struts. Heterogeneity of healing is a common finding in drug-eluting stents with evidence of LST and demonstrates the importance of incomplete healing of the stented segment in the pathophysiology of LST.

支架内血栓的最强的组织学预测因子是支架的内皮覆盖程度；最佳的LST形态学预测因子为未被内皮覆盖支架丝与总的支架丝的比值；内皮修复的不均一性在置入DES后发生LST的患者中是常见的，证明了支架节段内内皮覆盖不全在LST病理生理机制中的重要性。

Conclusions— The most powerful histological predictor of stent thrombosis was endothelial coerage. The best morphometric predictor of LST was the ratio of uncoered to total stent struts. Heterogeneity of healing is a common finding in drug-eluting stents with eidence of LST and demonstrates the importance of incomplete healing of the stented segment in the pathophysiology of LST.

支架内血栓的最强的组织学预测因子是支架的内皮覆盖程度；最佳的LST形态学预测因子为未被内皮覆盖支架丝与总的支架丝的比值；内皮修复的不均一性在置入DES后发生LST的患者中是常见的，证明了支架节段内内皮覆盖不全在LST病理生理机制中的重要性。

The co-eluting stent, sirolimus-eluting stent and bare-metal stent were implanted into porcine coronary artery model of sac expansion; 28 days later, the neointirnal area, mean neointimal thickness and reendothelialization of the stented coronary arteries were analyzed.

在猪冠状动脉球囊扩张模型中，植入雷帕霉素／雌二醇复合洗脱支架、雷帕霉素洗脱支架和裸支架，术后28 d考察支架血管段新生内膜面积、内膜平均厚度及支架内皮化程度。

The overpass at You'ai Road in Nanning is located at the traffic junction of the city, congested as it is and the prestressed concrete continuous box girder of the main bridge with in-situ scaffold construction can not meet the traffic needs The adoption of box girder in-situ scaffold combined with Bailey truss and universal rod, which is of long span, large rigidity and little deformation, meets the traffic needs Meanwhile the rapid combination of scaffold overcomes the shortcomings of high scaffold and ...

根据南宁市友爱路立交桥位于城市交通咽喉，车辆拥挤，主桥预应力砼连续箱梁现浇支架施工难以解决交通需求的矛盾，采用了贝雷桁架与万能杆件组合拼装箱梁现浇支架，该支架跨度大、刚度大、变形少，不仅解决了交通需要，而且支架拼装速度快，同时也解决了支架高、稳定性差的缺点。这一施工技术可在日益发展的城市立交桥施工中得到广泛使用。

Results Reconstructive coronary artery images of 1 patient with severe sinus arrhythmia were not displayed clearly.

结果 在56例行MSCT冠状动脉造影的患者中1例由于患者有严重的窦性心率不齐，重建图像质量欠佳，其余患者均成功显示冠状动脉各主支（左主支、回旋支、前降支右支冠状动脉）及部分3、4级分支，且可显示所有冠状动脉支架的形态、位置，其中18例患者的31个支架术后出现再狭窄，所有行MSCT冠状动脉造影检查的患者无一例出现并发症，所有CT诊断支架术后再狭窄的患者同时行选择性血管造影检查，其中14例患者的25个支架有支架术后再狭窄，CT诊断的准确率为80.65%。

"In-stent restenosis of DES occurs in nearly 10% of all DES implanted oer time," senior inestigator Dr. Ron Waksman told Reuters Health."Although not diffuse as with bare metal stents, DES ISR still associated with late eents."

高级研究人员Ron Waksman博士告诉路透社健康版说：&10%的药物支架在植入一段时间后发生血管内支架再狭窄，虽然不像单纯金属支架的问题那样广泛，药物支架血管内支架再狭窄也与近期活动有联系。&

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。