RESUMO
Objective To study the electric shock protection requirements of in vitro diagnostic equipment and to help manufacturers understand the relevant requirements in order to design products reasonably. Methods The requirements of IEC 61010-1:2010 were analyzed, the electric shock protection measures were explored, and the principles for protecting ground impedance against electric shock were described. An example was taken to study the electric shock protection measures for the sampling needle of the automatic bio-chemical analyzer, so that the existence of electric shock hazard could be determined. Results The sampling needle proved its rationality in structure design by avoiding the risk for being electriferous in case of failed basic insulation, although the requirements for protective earthing, double insulation or reinforced insulation were not met efficiently. Conclusion The requirements for electric shock protection can be determined based on comprehensive understanding of the standard, determination of electriferous components of the equipment as well as analysis on electric shock protection measures.
RESUMO
OBJECTIVE@#To make a distinction between myocarditis and the reaction to some pathological state of myocardium.@*METHODS@#Myocardium of 26 cases with sudden cardiac death were stained and LM light microscopies with immunohistochemical method 10 cases with normal myocardium were contrasted.@*RESULTS@#A great deal of stained positive monocyte of immunohistochemistry emerged in the parasetions of myocarditis patients with various farms and stacking(> 15).@*CONCLUSION@#The stain of immunohistochemistry can be used as one of the indications for diagnosing non-typical myocarditis.