SURGICAL ATRAUMATIC NEEDLE AND METHOD FOR ITS MANUFACTURING Russian patent published in 1995 - IPC

FIELD: medical engineering. SUBSTANCE: needle has serrated cutting edges provided with microteeth set at an angle to the cutting edges and pointing the needle point with their peaks. Method involves straightening wire, its cutting into bars, preliminarily sharpening the point, forming a channel for fastening thread, mechanically sharpening the point to make facets forming cutting edges, heat treatment. Mechanical sharpening is carried out facet after facet depending on the needle point cross-section in the direction from needle body towards the point at an angle to the cutting edges with following electrochemical polishing to form concave surfaces. EFFECT: less effort in piercing biological tissues. 5 cl, 3 dwg