Bone tumor prosthesis for firmly connecting tendon and making method thereof

Abstract

The invention relates to a bone tumor prosthesis for firmly connecting a tendon and a making method thereof. The bone tumor prosthesis for firmly connecting a tendon belongs to the technical field of medical apparatus and instruments in the department of orthopaedics and is used for firmly connecting a tendon after the excision of a bone tumor. The technical scheme of the bone tumor prosthesis for firmly connecting a tendon is that: the tendon connecting position of the prosthesis is provided with a plug-in unit slot, the plug-in unit is a cuboid, the cuboid shape of the plug-in unit matches with the plug-in unit slot of the prosthesis, the plug-in unit is provided with micro holes in which tendons can grow, multiple micro holes are distributed uniformly along the surface of the plug-in unit, the plug-in unit is fixed in the plug-in unit slot of the prosthesis by a bolt, the plug-in unit is internally provided with a U-shaped pinhole for fixing the tendon, and two U-shaped ends of the pinhole are provided with openings in the surface of the plug-in unit. The prosthesis and the plug-in unit are respectively made by a 3D printing technology which realizes multiple micro hole structures that are difficult to be completed by a conventional technology. The bone tumor prosthesis is invented for the first time in the department of orthopaedics, the tendon fibers can grow into the micro holes in the plug-in unit to form a firm connection, the stability of a prosthesis joint and the strength of joint motion are improved obviously, the limb salvage success rate is enhanced, and a new way is opened up for the development of prosthesis treatment in the department of orthopaedics.

Description

technical field [0001] The invention relates to a prosthesis capable of firmly connecting tendons after surgical resection of bone tumors and a manufacturing method thereof, belonging to the technical field of orthopedic medical devices. Background technique [0002] At present, there are two options for clinical treatment of bone tumors: limb salvage and amputation. Usually, both patients and doctors try to choose limb salvage. Amputation is less of a choice, but the function of limbs after limb salvage is poor. In actual treatment, bone defects will be caused after surgical resection of bone tumors. Smaller bone defects can be repaired by methods such as bone grafting and bone transport; while large bone defects require allogeneic bone and artificial prosthesis for repair and reconstruction. Due to the limited source of allograft bone, the large-scale clinical application is limited. Therefore, at present, large bone defects, especially joint defects, are increasingly dep...

AI Technical Summary

Problems solved by technology

[0003] The bone tumor artificial prosthesis currently used clinically is a mass-produced modular or customized prosthesis. The tendon or ligament attachment is designed with a ring structure to facilitate the suturing and fixation of these tendons and ligaments. These tissues cannot complete the tendon with the prosthesis. Bone joints are tightly combined, tendons and ligaments stabilize the joint and complete joint activities through the pseudomembrane around the prosthesis, so the joint stability is poor, the incidence of joint dislocation is high, and the force of joint activities is weak

[0004] With the advancement of science and technology, as a new additive manufacturing technology, 3D printing has developed rapidly in the field of orthopedics in the past two years. The most important feature of 3D printing is that it can complete individualized production. At the same time, 3D printing technology can Realize the production of micropores on the prosthesis, so that tendons and ligaments can grow into the micropores of the prosthesis to achieve the purpose of firm connection, and this microporous production technology cannot be achieved without 3D printing technology

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