DEVICE FOR PUNCTURE BIOPSY Russian patent published in 1999 - IPC

FIELD: medical instruments, applicable for through-the skin biopsy of the pancreas, liver and tumors of various organs. SUBSTANCE: tubular casing accommodates a movable cannula with a slide, spring, slide retainer and a locking member. The cannula and needle member have bearing flanges on the working ends with a spring, between them. The slide retainer has the shape of an L-shaped lever with a transverse arm in the form of a ring. The ring is aligned with the casing and located between the cannula flange and slide end. The lever longitudinal arm is made as a bar with a boss in the tail section and two opposite-arranged peripheral bosses. The slide is made as a bush with a cross-shaped slot for installation of the retainer longitudinal arm, the casing has a longitudinal through slot. The locking member is made in the form of a bush fixed on the casing. EFFECT: improved compactness, simplified design, enhanced convenience in use, simplified cleansing and sterilisation. 2 cl, 4 dwg