Duration of JJ stent in situ is critical: An ultrastructural and mechanical investigation

摘要: The JJ stent constitutes a medical device extensively used nowadays by urologists in more than 40,000 patients per year France. In this investigation, we characterize the surface state and elastic properties of set stents on which pathological calcifications are present. These encrustations have been identified Fourier transform infrared spectroscopy. A examination scanning electron microscopy indicates existence defects. striking point these observations is that black marks, present at to help during operation, significantly alter may serve as nucleation centers. Moreover, not preserved when indwelling time longer 12 wk. Such data industrial companies develop new stents, avoid formation clinician optimize lifetime patients.