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Preparation method and use of medical metal artificial bone trabecula

A technology of artificial bone and trabecular bone, applied in the field of medical orthopedic medical materials, can solve the problems of complex manufacturing process, time-consuming, poor mechanical properties, etc.

Active Publication Date: 2013-02-13
TIANXINFU (BEIJING) MEDICAL APPLIANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the advancement of medical science and technology and the continuous development of medical materials, it has become a reality to use various artificial bone substitutes in bone filling, bone repair, bone support and bone transplantation in the treatment of bone defects, such as the use of triphosphate Composite artificial bone formed by impregnating calcium material with growth factor solution, and degradable composite artificial bone fired from polylactic acid, pearl powder and sodium chloride, etc. The substitute materials of artificial bone have been improved, but most of them still have the problems of unstable therapeutic effect, complicated manufacturing process and high cost, especially the main material of these artificial bone substitutes is made of tricalcium phosphate mixed with dehydrated and decalcified bone powder gelatin Or it is made of calcium carbonate and other polymer materials. Although its inorganic components are close to bone, it is an inactive inorganic compound. After implanted into the bone body, it can play the role of a scaffold, cannot induce bone cell growth, and has poor mechanical properties. , cannot play a good supporting role, and the bone body grows slowly, which takes a long time and affects the treatment effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0011] Example Metal artificial trabecular bone for bone graft fusion and repair between vertebral bodies

[0012] According to the structure and shape characteristics of vertebral interbody bone defects, the metal artificial bone trabecula between vertebral bodies was prepared. The beam information is input into the computer-controlled electron beam melting molding equipment, and the temperature of 1800 °C generated by the electron beam is used to scan the titanium alloy powder in the molding equipment layer by layer and melt at high temperature until it accumulates into the required hexahedron shape. It has the shape, strength and elastic modulus similar to that of biological cancellous bone, and its surface has a porous structure to form a rough and loose outer surface, with an average pore diameter of 500 microns and a porosity of 60%.

[0013] According to the preparation method of the embodiment, according to the needs of the bone defect site, CT scan reconstruction is p...

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PUM

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Abstract

The invention discloses preparation and application of metal artificial bone trabecula for medical purposes. The structural design of the metal artificial bone trabecula is completed by a computer, and then inputted in an electron beam fusion former; the high temperature generated by electron beams is used to carry out the stratified scanning and high-temperature fusion to titanium alloy powder in the former so as to obtain the metal artificial bone trabecula with bio-cancellous bone morphology, strength and elasticity modulus and a rough and loose outer surface formed by a porous structure. The obtained artificial bone trabecula has mechanical and biological characteristics similar to a human bone, high surface friction coefficient, stable structure and wide range of application, and is applicable to various bone defects, bone filling, bone supporting, bone remodeling and bone repair in a human skeletal system as well as bone restoration of bone remodeling and bone repair of different bone joints of a human body.

Description

Technical field [0001] The invention relates to the technical field of orthopedic medical materials, in particular to a medical metal artificial bone trabecular. Background technique [0002] As we all know, in clinical orthopedic surgery, bone repair, bone filling and bone support are commonly used treatment methods. Bone defects caused by bone tumors, intervertebral disc lesions, osteoarthritis and trauma are very common in clinical practice. Parts involve various parts of the human skeletal system, including the skull, trunk bones, limb bones and joints. In various operations that require bone grafting, some require filling of bone defects to restore bone continuity and bone volume, some require structural bone grafting to support stability or fusion, and some Reconstruction or reshaping is required to achieve the purpose of restoration. The source of bone graft is divided into autologous bone or allogeneic bone. Due to its strong regeneration ability, fast healing, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/28A61L27/04B22F5/10
Inventor 于海鹰
Owner TIANXINFU (BEIJING) MEDICAL APPLIANCE CO LTD
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