Bone biomechanical measurement device

Abstract

The invention discloses a bone biomechanical measurement device. The device is used for measuring single parameters of bones such as three mechanical parameters of bone pull pressure, torsion and bending; the fatigue parameter measurement comprises measurement of bone pull pressure, torsion and bending fatigue parameters; and the composite mechanical property measurement is the mechanical property measurement when the bone is subjected to composite stress. The bone biomechanical measurement device comprises a host system and a control system; the host system comprises a host mechanical system, a servo motor controller for driving a servo motor, a pull pressure sensor for measuring pull pressure of the bone, a bending pressure sensor for measuring the bending force of the bone, and a displacement sensor for measuring the pull pressure of the bone to generate pull pressure deformation; and the control system comprises a programmable controller, a data acquisition controller and a measurement control processor. The bone biomechanical measurement device not only realizes the measurement of single mechanical properties when the bone is acted with pull pressure, torsion and bending respectively, but also realizes the fatigue mechanical property measurement of the bone and the composite mechanical property measurement when the bone is acted with pull pressure, torsion and bending at the same time.

Description

technical field The invention relates to a bone biomechanics measuring device, in particular to a mechanical measuring device for measuring bone tension and compression, torsion, bending and fatigue. Background technique The birth of a new orthopedic material, the application of a new type of orthopedic internal fixation device, and the innovation of a new orthopedic surgical technique are all inseparable from biomechanical testing technology. Orthopedic biomechanical testing technology includes two aspects: experimental biomechanical testing technology and computational biomechanical testing technology. In recent years, the development of science and technology has made the orthopedic biomechanical testing technology more and more perfect, and the reliability has been greatly increased. Supported by a large amount of test data, it provides a strong basis for the innovative application and clinical practice of new medical materials, new internal and external fixation device...

AI Technical Summary

Problems solved by technology

Can't get desired test results

(2) Most of the universal testing machine fixtures are general-purpose fixtures. Due to the irregular shape of the bones, the general-purpose fixtures cannot be well adapted to bone stress measurement

(3) Most universal testing machines are bulky and expensive. As the main unit of medical experiments, hospitals and medical colleges are difficult to have such equipment

It is difficult to simulate the comprehensive mechanical properties of normal human bones under various stress conditions

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