Customized medical porous titanium-magnesium composite material 3D printed shoulder joint humeral head

A composite material and 3D printing technology, applied in the field of medical implants, can solve the problems of falling off, shortening the service life, and poor fixing effect.

Inactive Publication Date: 2021-04-27
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Customized medical porous titanium-magnesium composite material 3D printed shoulder joint humeral head

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Step 1: Scan the skeletal tissue structure of the part of the human body that needs to be replaced with a CT scanning device, and establish a three-dimensional structural data model of the skeletal tissue structure of the part.

[0028] The second step: molar ratio of metal Ti powder, Mg particles, Si particles, Ca particles, Cu particles, Ag particles, Ni powder and Mo powder: (25-45): (15-30): (20-35 ): (5-10): (3-6): (5-15): (3-8): (0.1-0.5) After uniform mixing and preparation, the mixture is subjected to high-energy ball milling, Make the maximum spherical diameter not exceed 100nm to obtain ultrafine powder.

[0029] Add the modificator to the powder and preheat it by irradiation, continue to stir the mixed material within 30 minutes, and at the same time heat the temperature of the raw material to 150°C at a uniform speed, and keep it warm for later use. The stirring operation adopts magnetic stirring, and the preheating heat source is a radiation heat source. ...

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Abstract

The invention relates to an implantable prosthesis, and particularly relates to a customized medical nano renewable porous titanium alloy 3D printed shoulder joint humeral head. According to the method, CT tomographic image data of humerus is obtained by CT scanning on shoulder joint of a patient, and then a three-dimensional model meeting the shoulder joint humerus is established according to the CT tomographic image data. The humerus is printed layer by layer with mixture of Ti powder, Mg, Si, Ca, Cu, Ag, Ni and Mo as a matrix material for the humerus. Afterwards, electron beam irradiation treatment and nitridation treatment are carried out, and a strontium-loaded micro-nano coating is added to finally obtain the finished product. Compared with titanium alloy humerus or magnesium alloy humerus manufactured by traditional methods, the humerus printed through the method of the present invention has better strength, corrosion resistance and biocompatibility, facilitates combination with bone tissue, shortens healing time and reduces surgical risks.

Description

technical field [0001] The present invention relates to an implantable prosthesis, in particular to a custom-made porous titanium alloy 3D printed regenerative shoulder humeral head with human affinity and mechanical properties close to human bone, which is applied in the field of medical implantation. Background technique [0002] At present, for the treatment of diseases such as shoulder osteoarthritis, rheumatoid arthritis, and avascular necrosis of the humeral head, the replacement of artificial shoulder joint prosthesis has been widely used clinically. Most of the existing shoulder joint prostheses are composed of humeral head and 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 efficient replacement surgery. At the same time, existing designs of shoulder joint prostheses have defects such as lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/40A61F2/30
CPCA61F2/4014A61F2002/30769A61F2002/30948A61F2002/30952A61F2002/3097A61F2002/30985A61F2310/00023A61F2310/00239A61F2310/00293
Inventor 徐淑波薛现猛孙海波张森赵晨浩张世超李婷婷
Owner SHANDONG JIANZHU UNIV
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