Ultrasonic-assisted 3D printing medical porous renewable handle-free shoulder joint humerus head with cage

Abstract

The invention relates to a customized medical porous renewable handle-free shoulder joint humerus head implantable prosthesis with a cage. The method comprises the following steps: scanning a shoulder joint of a patient by using CT to obtain CT tomographic image data of humerus, and establishing a three-dimensional model conforming to a shoulder joint stemless cage and a humerus head according to the CT tomographic image data; under the condition that the grain size is controlled under the assistance of ultrasonic equipment, mixing multiple types of medical nano-metals as a base material of the handle-free cage, and printing the porous handle-free cage layer by layer; printing a high-strength biological ceramic humerus head by using various medical nano biological ceramic powder; and then carrying out electron beam irradiation treatment and adding a strontium-loaded micro-nano coating to finally obtain a finished product. The design of innovative combination of the 3D porous material and the bone cage technology is adopted, infiltration growth of sclerotin is achieved, a backbone is not needed, implantation is more convenient, complications related to the humerus component handle in a revision operation where the humerus component handle needs to be removed are avoided, and the success rate of the operation is increased; the humerus head obtained by the invention also has higher strength, corrosion resistance and biocompatibility.

Description

technical field [0001] The invention relates to an implantable bone-preserving prosthesis, in particular to a medical porous regenerative caged sessile shoulder humeral head with human body affinity and mechanical properties close to human bone, which is applied to medical implants. into the field. Background technique [0002] Clinically, it has been widely used to replace the artificial shoulder prosthesis. Most of the existing shoulder prostheses are composed of the humeral head and the humeral stem, and their structural designs are various. In order to increase the connection stability of the structure itself, individual designs are particularly complicated and have many components, which is not conducive to the efficient replacement surgery. At the same time, the existing designs of shoulder joint prostheses have defects such as low stability of connection with human biological tissues and poor biocompatibility, which can easily lead to poor fixation effect after repla...

AI Technical Summary

Problems solved by technology

Most of the existing shoulder joint prostheses are composed of the humeral head and the humeral stem, and their structural designs are various. In order to increase the connection stability of the structure itself, the individual designs are particularly complicated, and there are many components, which is not conducive to the efficient replacement surgery.

At the same time, the shoulder joint prostheses of existing designs have defects such as low stability of connection with human biological tissues and poor biocompatibility, which easily lead to poor fixation effect after replacement, loosening, falling off, and shortening. Common problems such as its service life

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