METHOD OF BRAIN EXTRACTION BY TUCHIK-CHERTOVSKIKH Russian patent published in 2013 - IPC A61B16/00 

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine, namely to forensic medicine. After sawing skull, examination and removal of dura mater, examination of pia mater and surface of brain hemispheres, corpus callosum and cingulate gyruses are examined. After that, knife tip is introduced at right angle anterior to corpus callosum, between large hemispheres until it rests against skull base bones. Knife is passed between large hemispheres backwards at right angle to skull base bones, through foramen magnum to internal occipital protuberance with small "pendulum-like" movements. Knife tip must rest against skull base bones at the end of each movement. When knife "passes" on sella turcica back, its tip is directed somewhat rightward (with initial extraction of right half of brain, or leftward if left half is extracted). After that index and middle fingers of left hand are placed from above under right frontal lobe of brain and it is carefully lifted above skull base. Olfactory tract is cut off. Anterior part of brain is extracted, all intersections in middle cranial fossa are made, and cerebellar tentorium is exposed and intersecred with short sawing knife movements at the place of attachment to pyramid of right temporal bone. Knife is submerged to small depth not to damage cerebellum. After dissection of tentorium, nerves are intersected, after which intersected are abducent, facial and auditory nerves, and finally glossopharyngeal, vagus with accessory and sublingual nerves, with "hook-like end" of knife being applied. After that, the same end is used to intersect spinal cord together with vertebral arteries in occipital foramen strictly across. Right half of brain together with right half of cerebellum is thrown out on left palm. If left part of brain is separated first, all described above actions are performed in "mirror reflection" order. Half of brain with preserved hypophysial stalk and hypophysis itself, and preserved tractus opticus remain in skull cavity. The other half of brain and cerebellum are put onto preparation table. State of hypophysial stalk, hypophysis and cavernous sinus is estimated with part of brain remaining non-extracted. The remaining half of brain is also extracted from skull cavity.

EFFECT: method makes it possible to examine and study hypothalamic-pituitary system together with cavernous sinus as a single formation.