脑温死亡时间测定仪的研制

Development of instrument for measuring the time of death

目的研制脑温死亡时间测定仪。方法根据动物和尸体实验了解脑温下降的规律,并选择针状温度传感器,确定测温入径途径。结果针状传感器的优点是:快速敏感、准确性高、对组织破坏少、插入方便。尽管这种方法仍有误差,但它与现在法医学上常用的方法相比误差已减少了许多。结论所研制的死亡时间测定仪具有体积小,便于携带、探头灵敏,可以迅速方便地探测死者的脑温,并能直接推断死亡时间,避免了某些人为的因素造成的误差。

There are many methods for estimating the death-time (post-mortem)such as measuring temperature of the anus,oral cavity,armpit,rectum,kidney,or other methods of biochemistry and histology.But these methods are mostly influenced by the surroundings and so there is error in calculating the death time.Our instrument can measure the death-time based on brain temperature exactly.We use needle wire temperature sensor.The measuring path is the shortest,so it can be easy to insert into and has little damage to the tissue.So the accuracy is high and error is less than other means.