Spine motion segment in-vivo loading device

Abstract

The invention discloses a spinal motion segment in-vivo loading device, which relates to the technical field of medical equipment, and comprises a first loading plate, a second loading plate, a sliding mechanism and a driving device, the first loading plate is provided with a first mounting seat for mounting a kirschner wire, the second loading plate is provided with a second mounting seat for mounting the kirschner wire, the first loading plate and the second loading plate are slidably connected through a sliding mechanism, and the driving device is used for driving the first loading plate and the second loading plate to be close to each other. During use, the kirschner wire on the first mounting seat penetrates through the upper section of the spine, the kirschner wire on the second mounting seat penetrates through the lower section of the spine, the first mounting seat and the second mounting seat are driven by the driving device to get close to each other, and axial loading can be performed on the spine; and therefore, a researcher can complete the research on the specific relation between the mechanical load and the iliac bone mass, the structure and the mechanical property.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an in-body loading device for spinal motion segments. Background technique [0002] Mechanical loading is critical to maintain the structure and function of bones. Bone tissue has adaptability to its mechanical environment. When the mechanical load on bone tissue decreases, bone loss occurs, and the structural strength of bone tissue decreases, thereby reducing the overall mechanical properties of bone. The mechanical environment is one of the important environments in which bones are located. A large number of studies have shown that appropriate mechanical loading can cause significant changes in bone mass, structure and mechanical properties. However, the response of bone mass, structure and mechanical properties to the deformation of bone matrix induced by mechanical loading is inconsistent, and the specific process of this response is still not clear. Therefore, ...

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Problems solved by technology

However, the response of bone mass, structure and mechanical properties to the deformation of bone matrix induced by mechanical loading is inconsistent, and the specific process of this response is still not clear.

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