METHOD FOR MAKING GLASS KNIVES FOR PREPARING STABLE SERIES OF ULTRA-FINE SECTIONS Russian patent published in 2014 - IPC C03B33/12 

FIELD: medicine.

SUBSTANCE: invention refers to medical and biological instrument engineering and aims at preparing histological sections in the tissue ultra-structure analysis. A method for making two forms of glass knives involving cutting the first square of a glass bar, turning it counter clock wise at 45° in a horizontal plane, fixing in adjusted fasteners of a knife-maker, incising and breaking the square in two knives; then the first knife having an acute angle of a cutting edge from the left is taken, and the second knife is made of the second square. Thereafter, the square is turned clock wise at 45° in a horizontal plane; additionally, the second square is turned at 180° along the axis aligned with the long axis of the knife-maker; the second knife is fixed in the fasteners of the knife-maker; the second knife is incised and broken in two knives; the second knife having an acute angle of the cutting edge from the right is taken. A pair of the first and second knives enabling forming two straight parallel side flat sides of a pyramid on the tissue sample surface without the position variation in the sample holder of an ultratome is formed.

EFFECT: reducing the number of defected ultrafine sections.

5 cl, 3 dwg