Objective to investigate the efficacy and safety in patients underwent operation for postoperative residual shunt of ventricular septal defect (VSD).
目的探讨先天性室间隔缺损(VSD)修补后残余漏的手术疗效及预防VS D残余漏的要点。
The result indicated that the residual stress in the product produced by optimized project was decreased obviously, the volumetric shrinkage was homogeneous and the defect became slight.
结果表明，优化工艺后成型的复杂壳体制件的残余应力明显减小，体积收缩也比较均匀，缺陷明显减轻。
For all patients, residual fibrotic tissue of subchondral bone was removed from the defect.
清理掉所有病灶软骨下骨的残余纤维组织。
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