A pulsed fracture healing whole process stress measurement device

Abstract

The invention relates to a pulse fracture healing overall process stress measuring device, which comprises a fixed support, a pressure display instrument of the fixed support and a computer, and also comprises a pressurization support, a pressure display instrument of the pressurization support and a control module of the pressurization support, wherein the pressurization support is electrically connected with the pressure display instrument of the pressurization support and the control module of the pressurization support, the computer is electrically connected with the control module of thepressurization support, the pressurization support comprises a first pressurization support, a second pressurization support, a tension spring, linear bearings, a speed reduction motor, a first pressurization support shaft, a second pressurization support shaft and a pressurization sensor, the two parallel linear bearings are fixedly connected with each other, the first pressurization support shaft and the second pressurization support shaft are respectively sleeved in one linear bearing, the speed reduction motor is connected with one end of the tension spring, the other end of the tension spring is connected with the pressurization sensor, the pressurization sensor is installed on the first pressurization support, and the fixed support shaft is separated into two sections and is connected with the pressurization sensor through the fixed support. The pulse fracture healing overall process stress measuring device has a simple structure, and accurately and reliably measures.

Description

technical field [0001] The invention relates to a pulse-type stress measuring device for the whole process of fracture healing, which is mainly used for the basic research of fracture treatment, and can provide accurate data for exploring the stress change of the fracture end during the fracture healing process, thereby deriving and finding the best stress environment for fracture healing . Background technique [0002] Fracture is a common disease. Modern medicine has conducted systematic research on fractures. The study pointed out that: when the fracture is healing, the fracture end is subjected to muscle dynamics and external loads to generate stress, and there are always local stress environments that are suitable for different stages of fracture healing. Bone tissue can grow in a certain direction under the influence of stress or direct action. Therefore, finding the optimal stress at the fracture end has always been an important content of basic research in orthopedi...

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Problems solved by technology

Therefore, finding the optimal stress at the fracture end has always been an important content of basic research in orthopedics. Scholars at home and abroad have made a lot of attempts. For example, Gu Zhihua in China designed a force-measuring orthopedic fixator, taking goats as experimental objects, and obtained the fracture healing function K=72.51+72.67σ-83.43σ 2 (K, quality of fracture healing; σ, stress at the fracture end); Ma Xiaoyu et al. used Lab VIEW software to analyze the pressure data of the fracture end, and also tried to digitalize the fracture healing process. Foreign countries also used multi-directional stress sensors on external fixation brackets. However, the above methods have certain defects, and no correct and systematic conclusions have been drawn. The optimal stress at the fracture end is still an unsolved mystery in the field of modern bone trauma.

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