Porous tantalum rod and application of porous tantalum rod

Abstract

The invention relates to a medical permanent implantation object, in particular to a medical implantation porous tantalum rod used for treating early-mid femoral head necrosis. The porous tantalum rod comprises a body, wherein one end of the body is provided with a groove, the other end of the body is provided with a threaded structure, and a notch is formed in the end surface of the tail end of the threaded structure. One end of the body of the porous tantalum rod is provided with the notch, bone marrow stromal cells or bone marrow stromal cell united biological membrane complexes and the like can be loaded, the generation of a new bone is favorably realized, a better clinical effect is particularly realized in the early femoral head necrosis treatment, and the defects of poor clinical treatment effect and the like of the existing entity type porous tantalum rod are overcome. The porous tantalum rod has the advantages that the preparation method is simple, the cost is low, the implementation and the clinical application are favorably realized, and the porous tantalum rod is suitable for the need of wide patients.

Description

technical field [0001] The invention relates to a medical permanent implant, in particular to a medically implanted porous tantalum rod for treating early and mid-stage necrosis of the femoral head. 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, the method of drilling and decompression is often used for treatment. During the operation, the sequestrum needs to be removed before filling the support for the collapsed or necrotic femoral head implants; Bone flaps with or without blood vessels are used for transfer therapy. A large number of experiments and clinical studies have proved that simple bone grafts have shortcomings such as insufficient biomechanical support and bone resorption. Therefore, bone implants that can provide biomechanical support are required. [0003] Porous medical metal implant materials have important and special uses in the treatment of bone ...

AI Technical Summary

Problems solved by technology

[0006] At present, the medical implant made of the existing porous tantalum material for filling the necrosis of the femoral head is a rod-shaped solid object with a thread at one end. People in the industry are used to calling it a "porous tantalum rod". Embedded implants in clinical treatment are implanted through the decompression channel during the early stage of femoral head necrosis, and are fixed by surrounding bone tissue growth wrapping and ingrowth. "It lacks the function of carrying induction factors such as bone marrow stromal stem cells and substances that promote bone growth, so it is often impossible to achieve good clinical results in early treatment; the "porous tantalum rods" currently used are all produced and manufactured by foreign companies. expensive

In short, medical implants with this structure are not only expensive but also have a low clinical success rate, which undoubtedly brings huge economic and psychological burdens to the majority of patients.

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