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Biomedical subjects

A Ceramilac

Publications and source records attributed to A Ceramilac.

At least 19 recordsLinked to original sources
PubMed1982

[Study of the mechanism of injuries due to high velocity projectiles].

In the experiments on pigs wounds on the muscle-connective tissues of the thighs were made at 50 meter range by projectiles of military Rifles M 48, M 70, M 16A FAL (the length of the wound canal from 214 to 228 mm), M 91/30 and Dragunov (the length of the wound canal from 160 to 164 mm). The mass of tissue excised at primary surgical debridement was taken as a criterium of the primary devitalization of tissue, the amount of the transferred energy was calculated as well as other parameters of the terminal ballistics. Shooting through the glycerine-soap blocks under the same conditions were parallelly performed. The examinations have shown that the degree of the primary mechanical injury depended on the amount of the transferred energy, which depended not only on the high initial velocity of the bullet but also on the disintegrated, deformed and fragmented bullet after passage through the tissue. The mass of the excised tissue can be a reliable criterium for evaluation of wound severity. There is a good correlation with the volume of the cavity in the soap blocks so that they can be used in experiments as simulant biological media.

Animals↗
PubMed1979

Experimental soft tissue wounds caused by standard military rifles.

Soft tissue wounds were caused by penetration of a bullet through both thighs in 42 pigs, fired from N48, M70, M16A1 and FAL rifles at 50 meter range. Four comparable groups of wounds, consisting mainly of injured muscle, were examined. Primary debridement was carried out 5-6 hours following wounding, multiple muscle biopsies up to 40 mm sidewise of permanent wound channel were taken for HE and histochemistry. Primary contamination was traced using marker aerobic bacteria. Bullet velocities at impact and exit were measured and transfer of energy to liver tissue calculated when feasible. The condition of the bullet after exit was precised. The surgical estimation of tissue injury, the mass of excised tissue and microsections have served to evaluate the extent of tissue injury. For 22.5 cm mean channel length the most injury was caused by the FAL, followed by M16, M70 and M48 rifles in declining order. Local effects are ascribed to bullet tumbling, break-up and energy transfer of corresponding missiles. Correlation of surgical and pathology methods is discussed.

Animals↗