DEVICE FOR EXAMINING MECHANICAL PROPERTIES OF MANDIBULAR BONY TISSUE Russian patent published in 2015 - IPC A61C19/04 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, particularly to dentistry, and can be used for examining the mechanical properties of mandibular bony tissues. A device comprises material holding elements, a mechanical energy source, load record elements, a base, which is configured as a platform made of a solid material. The base bears front and back perpendicularly mounted jig; the back jig is movable along the base and fixes position. In the centre, the base carries a rigidly mounted vertical rod. A back end of the base comprises a hydraulic pump integrated into a liquid container; the hydraulic pump is connected to a pipeline with front and back chambers of a horizontal two-chamber cylinder, as well as to upper and lower chambers of a vertical two-chamber cylinder; the both cylinders comprise piston rods. The horizontal and vertical two-chamber cylinders are rigidly connected to the vertical rod. A piston rod of the horizontal two-chamber cylinder is rigidly connected from the back side to a rod, a free end of which is connected by a quick-detachable connection to a hose clamp placed on a ramus of mandible. At the front, the piston rod is connected to the rod, a free end of which comprises a detachable head. The piston rod integrated into the vertical two-chamber cylinder is connected from above to the rod, a free end of which is coupled by the quick-detachable connection to the load platform configured as a pad. The load platform has a hole, edges of which are rigidly connected to a guide bush, which incorporates a free vertical rod. Along the longitudinal axis of the base, there are provided two lower self-holding height-adjustable mandible clamps; they are mated with two upper self-holding height-adjustable mandible clamps rigidly connected below the load platform. The jigs, load platform, rod of the piston rod of the horizontal two-chamber cylinder, upper and lower self-holding mandible clamps comprise strain-gauge transducers connected through a control unit to measuring and recording instruments.

EFFECT: invention enables examining the extended mechanical characteristics of the mandibular bony tissue - clenching, stretching, hardness - to high stringency of the examination.

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