Medical puncture biopsy needle interface interaction mechanical property integrated test and method

• Main Authors: WANG YAO, XUE YUKUN, MEI XIAO
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2021
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

The invention provides a medical puncture biopsy needle interface interaction mechanical property integrated test and method, which comprises the pasting positions and arrangement mode of a plurality of resistance strain gauges, and is characterized in that a 45-degree right-angle strain rosette formed by three strain gauges is respectively adhered to each of a point A at the tip end part of a needle tip and a point B at the end part of an inclined surface, corresponding circumferential temperature compensation pieces are pasted beside the axial strain gauges, and the other two strain gauges are evenly distributed and pasted on the same transverse section in the circumferential direction at 120 degrees to form an equilateral triangle; the interface interaction mechanical property test and characterization method in the puncture process of the puncture biopsy needle comprises principal stress, a principal direction, bending moment, torque and offset; and each characterization method corresponds to a bridging m