The term "deflated needle for cattles" refers to a trocar and cannula, a veterinary surgical instrument used to relieve severe, life-threatening bloat in cattle. It is specifically for emergency situations when gas pressure in the rumen becomes dangerously high.

Application
A puncture is made in the left rumen at an equal distance from the last rib and the scapula. The designated puncture site is disinfected. The trocar is inserted into the rumen cavity up to the handle with a short, forceful blow. After the puncture, the rod is removed from the hollow tube, and gases begin to escape.