FIELD: testing medical equipment.
SUBSTANCE: invention relates to testing medical equipment and can be used in medical materials science to study the strength properties of biological tissues. A clamping device for mechanical testing of biomedical materials and biological tissue samples includes clamps, clamping jaws with an adhesive area, a clamp and a guide device. The guide device is made in the form of a rectangular base with two vertical walls made of a material with elastic properties on opposite sides of the base, longitudinal elements with a central rounded longitudinal groove are made on the inner opposite surfaces of the vertical walls. The clamps are made in the form of two upper and two lower passive clamps. Each lower passive clamp is made in the form of a T-shaped base, the upper horizontal plane of which forms the mounting element, and the vertical plane forms the base. In the central part of the upper plane of the mounting element, a lower clamping jaw is made with a relief surface in the form of alternating longitudinal projections and recesses. Through-holes are made along the edges of the clamping jaw in the mounting element. On the bottom plane of the base, perpendicular to the base, there is a guide element with a section in the form of a rectangle, turning into a rounded thickening. The section of the lower rounded part of the guide element corresponds to the central rounded longitudinal grooves in the longitudinal elements of the vertical walls. At the junction of the mounting element and the base, a restrictive wall is made perpendicular to the base, to which the end of the guide element adjoins. Each upper passive clamp is made in the form of a rectangular platform, on one of the planes of the inner side of which in the middle part there is an upper clamping jaw with a relief surface in the form of alternating longitudinal protrusions and recesses, made so that when applied to the lower clamping jaw, the protrusions in the lower clamping jaw coincided with the recesses in the upper clamping jaw. Along the edges of the upper clamping jaw, vertical protrusions are made, the distance between which corresponds to the distance between the through holes in the lower passive clamp. The shape of each vertical protrusion corresponds to the shape of the through hole. The height of the vertical ledge corresponds to the thickness of the adjusting element, locking elements are made on both sides of the vertical ledges, which are connected to the vertical ledges by means of a spring element. The distance between the inner ledges of the opposite locking elements is designed to secure the upper passive clamp to the lower passive clamp. The lower passive clamps are installed in the central longitudinal groove of the guide device towards each other by means of a guide element on the base. The upper passive clamps are mounted on the lower passive clamps so that the upper and lower clamping jaws are opposite each other. The vertical protrusions of the upper passive clamps are installed in the through holes of the corresponding lower passive clamps. The locking elements of the upper passive clamps are snapped onto the ends of the lower passive clamps.
EFFECT: reliable fixation of a biological tissue sample while maintaining its integrity and visualization of the test area.
3 cl, 5 dwg
