宫内节育器表面沉积物的分析

本文对使用不同时期(20年内)后的不锈钢宫内节育器表面的沉积物采用了扫描电子显微镜、X 线能量色散分析、俄歇电子能谱和X 射线光电子能谱、透射电镜以及原子吸收光谱的定量分析,并与含铜宫内节育器加以比较,结果表明在宫腔内放置五年的不锈钢丝节育器的外观变化不明显,含铜宫内节育器的铜丝有溶蚀现象,二者表面均出现沉积物,含铜节育器表面出现沉积物比不锈钢环要早(分别为27天和3个月)。沉积物的多少虽随放置时间的延长而增加,但有很大的个体差异。沉积物的主要成分系碳酸钙结晶。本文还对沉积物与带器妊娠、子宫出血等的关系进行了初步讨论。

ANALYSIS OF SURFACE DEPOSITS ON INTRAUTERINE CONTRACEPTIVE DEVICE

The surface deposits on stainless steel contraceptive devices removed from the uterus after various periods of insertion were examined and analyzed by means of scanning electron microscopy,X-ray energy dispersive analysis,Augar electron spectroscopy,X-ray photoelec- tron spectroscopy,transmission electron microscopy and atomic absorption spectrophoto- meter for micro-quantitative analysis.The data obtained were compared with those of cop- per-bearing IUDs(TCu 200)obtained by the same methods.The wire coils of stainless steel IUDs which had been in situ for 5 years showed no evident changes but the copper wire coils of the same duration showed varying degrees of erosion.The analysis clearly showed that the wire coils of both types of IUDs were encrusted with deposit.Deposition bgaan on copper-bearing IUDs earlier than on stainless steel IUDs (27 days and 3 months after insertion respectively).This process began earlier than was reported in other literatures.The amount of deposits increased with the time of in- sertion,but there were great individual variations.Through the above mentioned micro- analysis,it was found that the principal composition of the deposition both types of IUDs was calcium and existed in the crystal form of calcium carbonate.The substances attaching to the crystals were very likly nitrogenous organic compounds.Regarding the mechanism of the deposit formation,we suggest that it may be similar to that of calculus. The influence of the deposits on the complications of IUD insertion,such as uterine bleeding and unwanted pregnancy is discussed briefly in this article and has to be studied for further details.