FIELD: medicine, medical instruments, applicable for internal cavitary operations, as well as for biopsy tests. SUBSTANCE: the instrument has a body accommodating the cutting element and an appliance for extraction of the removed material. The body is made in the form of a flexible case, the appliance for extraction of the removed material made in the form of a flexible screw is located inside it. Used as the cutting element is the screw edge made for pulling-out from the case at least by the value of the cutting edge. EFFECT: reduced time of operation at a reduced traumatologic and psychologic shock of the patient. 9 cl, 1 dwg
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