Design method of artificial elbow joint prosthesis with tantalum coating

A design method and elbow joint technology, applied in the field of biomedical composite materials, to achieve the effect of increasing bone ingrowth, high bonding strength, and good biocompatibility

Inactive Publication Date: 2011-03-16
XIAN FUAN INNOVATION CONSULTATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a design method of a tantalum-coated artificial elbow joint prosthesis, which overcomes the shortcomings of the current artificial prosthesis coating, improves the fixation effect of the artificial prosthesis in the human body, and prolongs the service life of the artificial prosthesis

Method used

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  • Design method of artificial elbow joint prosthesis with tantalum coating
  • Design method of artificial elbow joint prosthesis with tantalum coating
  • Design method of artificial elbow joint prosthesis with tantalum coating

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Experimental program
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Embodiment 1

[0020] Such as figure 1 , 2 , 3, the present invention includes humeral component 1, ulna component 2 and radial component 3 three parts; 3 three components all contain handle body and joint connection structure, and the shape of each component handle body and the bone marrow cavity space of corresponding human body The shape fits well to facilitate the insertion of the stem into the corresponding bone marrow cavity; the shape of the stem is tapered from thick to thin to prevent the stem from sinking and shifting in the bone medullary cavity; the humeral component is changed from thin to thick Cylindrical or conical shank 7 and a thicker end that is arc-shaped and over-expanded joint connection structure, the center of the joint connection structure is the crankshaft 4, and the radial joint sleeve 5 and the surrounding polyethylene The pads 10, 17 together form an articulating structure. The ulna component 1 and the humerus component 2 can perform limited flexion and extensi...

Embodiment 2

[0028] Using materials such as medical stainless steel 00Cr18Ni14Mo3 or 00Cr18Ni15Mo3N, titanium Ti, titanium alloy Ti-6Al-4V or cobalt-chromium-molybdenum alloy Co30Cr6Mo0.35C as the base part of the prosthesis, taking advantage of its high mechanical strength, the artificial prosthesis provides more Strong mechanical strength, so that the prosthesis can bear the physiological load and motion load of the human body without material fatigue or damage; the application of hard Al 2 o 3Or SiC sand is used as the medium to carry out sandblasting pretreatment on the outer surface of the stem 1 of the artificial prosthesis base and the outer surface of the elbow cup 3 to form a rough surface on the surface of the prosthesis base to facilitate the bonding strength of the coating; adopt biocompatible Metal tantalum material with good performance, corrosion resistance, wear resistance and high bonding strength is used as the coating material. The contact part between the base of the pr...

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Abstract

The invention relates to an artificial elbow joint prosthesis, in particular to a design method of the artificial elbow joint prosthesis which is provided with a tantalum microporous coating on the surface, the artificial elbow joint prosthesis comprises a humeral component used for being implanted into a marrow cavity of distal humerus, an ulnar component for being implanted into the marrow cavity of proximal ulna and a radial component for being implanted into the marrow cavity of proximal radius, each component consists of a joint part and a handle body part, the joint parts have the rotary motion function with different degrees for ensuring the motion of a joint after implanting the prosthesis, and the handle body parts are the parts for being inserted into the marrow cavity, thereby achieving a role of fixing the prosthesis. The joint parts of the humeral component and the ulnar component are connected by relying on a crankshaft which can rotate for chimerism, and a joint ball head of the radial component is connected by chimeric sleeve joint through a joint mortar groove connected at the proximal end of the ulnar component. The artificial elbow joint prosthesis is characterized in that a tantalum surface is wrapped on the outer surface of each handle body, and each tantalum surface is in the microporous structure, thereby improving the fixing effect of the artificial prosthesis in a human body and prolonging the service life of the artificial prosthesis.

Description

technical field [0001] The invention relates to an artificial elbow joint prosthesis, in particular to a design method of a tantalum-coated artificial elbow joint prosthesis provided with a tantalum microporous coating on the surface, and belongs to the application field of biomedical composite materials. Background technique [0002] Chinese patent specification CN 1177469A and CN 101262834A disclose two kinds of artificial elbow joint prosthesis respectively, and its body surface is smooth, without porosity. Related studies have shown that such an artificial prosthesis surface structure is not conducive to bone ingrowth and early stability around the prosthesis after implantation. At present, bioceramic coating materials and microporous metal coating biomaterials have become the main directions of prosthesis surface treatment, represented by hydroxyapatite (HA) and titanium (Ti) coatings respectively. They are HA (Ca 10 (PO 4 ) 6 (OH) 2 ) and Ti metal are coated on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38A61L27/30A61L27/04A61L27/56A61L27/16A61L27/06
Inventor 段永宏朱庆生郭飞阮骊韬阮绍萍王仁李矛李敬娥
Owner XIAN FUAN INNOVATION CONSULTATION
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