3D printed bone connecting rod system

Abstract

The invention relates to the technical field of medical instruments, and provides a 3D printed bone connecting rod system. The 3D printed bone connecting rod system comprises a bone connecting rod body, the bone connecting rod body comprises a first threaded section, a cylindrical section, a spherical section, a first through hole and a plurality of nutrition holes, wherein the first threaded section, the cylindrical section and the spherical section are sequentially arranged; the first through hole is formed in the center of the 3D printed bone connecting rod body and penetrates through the first threaded section, the cylindrical section and the spherical section; the multiple nutrition holes penetrate through the first threaded section and the cylindrical section; the cylindrical section comprises a bone trabecula area and a solid area which are alternately arranged; and the multiple nutrition holes are symmetrically arranged around the first through hole, and the multiple nutrition holes are crossed with the bone trabecula area to provide nutrition for the bone trabecula area. The 3D printed bone connecting rod system has the beneficial effects that the first through holes and the nutrition holes provide sufficient nutrition for the growth of new bones, continuous pressure reduction is realized during the growth of the new bones, and the alternately arranged bone trabecula area and solid area provide sufficient support for the growth of the new bones, so that the growth of the new bones and bone recovery of human bodies are facilitated, and the problems that in the natural growth process of the bones, the bone growth is slow, and the pressure cannot be continuously reduced are solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, and more specifically, relates to a 3D printed bone connecting rod system. Background technique [0002] Collapse of the articular surface of the femoral head or necrosis of the femoral head is a common clinical disease. At present, drilling and decompression are often used for treatment. During the operation, the sequestrum needs to be removed and then filled to support the collapsed or necrotic femoral head implant. In the treatment of femoral head necrosis in the middle and advanced stages, bone flaps with or without blood vessels are often used for transfer treatment. Through a large number of experiments and clinical evidence, simple bone transplantation has shortcomings such as insufficient biomechanical support and bone resorption. A bone implant that provides biomechanical support. [0003] Porous medical metal implant materials have important and special uses in the treatment o...

AI Technical Summary

Problems solved by technology

The "porous tantalum rod" of this structure is inconvenient to be positioned accurately during the operation, and when it is implanted during the operation, the special surgical tool clamps its threaded section and screws it in forcefully, causing the rear end of the thread to be fixed on the cortical bone of the femoral head The thread part is reduced, resulting in unstable fixation of the "porous tantalum rod" and easy dislocation after surgery; during the natural growth process of the bone, the bone grows slowly and cannot be continuously decompressed

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