CIRCULAR TOOL FOR THE TREPANATION OF TESTICLE SHELL FOR EXTRACTING HEN EMBRYO FROM THE EGG FURTHER FOR OBTAINING OF CELLULAR TRANSPLANTS FROM ITS FETAL TISSUES

摘要

The utility model seeks prevention of injury chick embryo in an egg during the extraction, to further receive from its cell transplants of fetal tissue, due to failure of the drill under the shells, in the course of drilling burr holes by its removal.; Said technical result is achieved in that the "core cutter for trepanation eggshell to extract chick embryo from egg to further obtain cell transplants from its fetal tissue" comprising a body with a shank of a hollow rotation body with cutting teeth at the working end thereof, which is in a crown with an internal cavity in the form of a truncated cone expanding to move the core into the cavity of the liner, the hole diameter is equal to the largest diameter of the truncated cone, provided us the following differences: at a distance of 3 mm from the cutting part of the crown is fixedly attached to a drill round limiter, consisting of two fixedly interconnected parts: rubber, situated closer to the cutting portion and the metal crown situated on the cutting portion of the crown.; Technical Solution "annular trepanation drill for eggshell to extract of chick embryo eggs for further receipt of its cell transplants of fetal tissue" is as follows: an annular hollow drill shank 2 is inserted into a drill chuck or a special chuck for surgical drills and fixed. Thereafter, the cutting tool is rotationally driven and fed to the surface of the eggshell. After drilling through the eggshell limiter prevents falling through drills under it and trauma of chicken embryo in an egg.