STUDIES ON THE APPLICATION OF MICROEXPLOSION TO MEDICINE AND BIOLOGY

V. Development of Experimental Apparatus for Microexplosion and Histological Change in Dog Bladder Wall by Blast in Air

Abstract

1) A new type of apparatus for microexplosion with an explosive charging chamber of lead azide and a holder for experimental use was developed.
2) Using the above mentioned apparatus, the explosive of different weights was blasted at different distances towards bladder fragments from adult dogs. Although various finds of destruction were encountered on the fragments, almost no injury was observed in histology by blasts with explosives below 5mg in weight and at distances over 10mm between the fragments and the explosives. According to detonation theory and our unpublished data, the peak pressure of blast at this critical point was thought to be approximately 36kg/cm².
3) It might be expected to analyze not only the dynamic effect of blast by shock wave, but also the static effect of it by generated gas in the next step of our study.