Bone defect implant based on metal rubber

Abstract

The invention discloses a bone defect implant based on metal rubber. The bone defect implant comprises an osteogenesis body, a supporting body, a fixing mandrel and connecting mechanisms, wherein thesupporting body is arranged in the osteogenesis body, the fixing mandrel is arranged in the supporting body, and the two ends of the fixing mandrel are connected with a first fixing end support and asecond fixing end support through the connecting mechanisms. Compared with a traditional long-stem bone defect implant, the metal rubber bone defect implant has good mechanical properties and certainporosity, and bone tissue ingrowth is facilitated. The bone implant for bone fracture or bone defect is provided, the osteogenesis activity effect is improved, and load bearing and bone ingrowth are facilitated. The metal rubber bone defect implant is an implant made of titanium alloy wires through a certain process, the biological performance is stable, the two fixing ends of the metal rubber bone defect implant are of a filling support structure, and the problem that in the prior art, a bone defect repair support slides after being implanted into the surface of the broken end of bone defectcan be effectively solved.

Description

technical field [0001] The present invention relates to the field of bone defect implants, in particular to a metal-rubber-based bone defect implant. Background technique [0002] Bone defect after bone tumor resection, nonunion and defect after long shaft fracture of extremities are common clinical diseases. How to repair the large segment of bone and joint caused by bone tumor resection has always been a major problem in orthopaedics. Although bone defects can be repaired in a variety of ways (eg, bone graft arthrodesis, artificial prostheses, and traditional allograft bone joint grafts, etc.), each method has advantages and disadvantages. At present, frozen allograft bone and joint transplantation is mostly used in clinical practice, but the bone connection of large-section allograft bone joint transplantation takes a long time to heal, and some patients do not heal, resulting in nonunion, delayed bone union, allograft fracture, etc. complication. [0003] Bone flaps, ...

AI Technical Summary

Problems solved by technology

Although bone defects can be repaired by various methods (such as bone graft joint fusion, artificial prosthesis and traditional allogeneic bone joint transplantation, etc.), each method has advantages and disadvantages

At present, frozen allogeneic bone joint transplantation is mostly used clinically, but it takes a long time for the bone connection of large allogeneic bone joint transplantation to heal, and some patients do not heal, resulting in nonunion, delayed bone union, and allogeneic bone fractures. complication

[0003] Bone valves, autologous bone, artificial bone, etc. are commonly used to treat bone nonunions and defects after fractures of the long shaft bones of the limbs. However, a large number of experiments and clinical studies have proved that simple bone transplantation has disadvantages such as insufficient biomechanical support and bone resorption. And the artificial synthetic bone currently used clinically, its main defect is that the mechanical strength is not enough to meet the requirements of the load-bearing area well, and the osteogenic activity is poor

However, this natural phenomenon may not be conducive to the repair of bone tissue engineering: (1) After the traditional bone defect repair scaffold is implanted on the surface of the broken end of the bone defect on both sides, there is a certain gap between the two ends of the repair scaffold and a large amount of intima bone formation. (2) Intimal bone formation closes the medullary cavity, so that the osteogenesis-related cells and factors in the medullary cavity cannot effectively penetrate the scaffold material

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