Carbonaceous artificial head of humerus prosthesis

A humeral head and carbon technology, applied in the field of carbon artificial humeral head prosthesis, can solve the problems of easy loosening, rotation, carcinogenicity, fatigue, etc., and achieve the effect of simple operation, good biocompatibility, and prevention of dislocation

Inactive Publication Date: 2004-03-17
JILIN CENT HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The research and application of humeral head prosthesis in foreign countries began at the end of the 20th century, but its material selection is nothing more than metal materials (such as cobalt, chromium, molybdenum alloy materials) or polymer materials, and the structure is integrated, which has certain advantages. There are metals with large elastic modulus, which are easy to be electrolyzed and cause metal fatigue; polymer materials are easy to age, produce toxic reactions in the monomer state, and have carcinogenic factors; and they all lack lubricity and poor biocompatibility. There are also certain defects in the structure. It is easy to loosen and rotate after being implanted in the human body, which is not ideal for clinical use and causes great pain to the patient.

Method used

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  • Carbonaceous artificial head of humerus prosthesis
  • Carbonaceous artificial head of humerus prosthesis
  • Carbonaceous artificial head of humerus prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: with reference to attached figure 1 , 2 , 3, 4, this carbonaceous artificial humeral head prosthesis is composed of a carbonaceous humeral head sphere 1 and a humeral head handle 2. The sphere of the humeral head is a hemisphere, and a cylindrical fixing groove 3 is formed on the bottom of the sphere of the humeral head along the axial direction, and a radial positioning groove 6-3 is formed on the fixing groove. The humeral head handle is composed of the upper cylindrical fixing column 4 and the humeral head handle rod 5 connecting the lower part. A fixing platform 7 is provided at the connection between the fixing column and the humeral head handle rod. The positioning on the fixing column and the fixing groove A radial positioning groove 6-4 is formed at a position corresponding to the groove 6-3. The section of the humeral head stem is circular, with an anti-rotation groove 8 longitudinally and an anti-loosening groove 9 transversely, and a pull-out ...

Embodiment 2

[0012] Embodiment 2: refer to Figure 5 , its structure is basically the same as that of Example 1, the sphere of the humeral head is a multi-hemispherical body, the fixing groove on the sphere of the humeral head deviates from the axis, so that the neck-shaft angle α is 140°, and the sphere of the humeral head has a suspension hole 12.

[0013] Among them, the carbon-titanium artificial humeral head prosthesis: Embodiment 1 is suitable for cases of simple humeral head articular surface injury and shoulder dysfunction; Embodiment 2 is suitable for comminuted fractures or lesions of the humeral head, such as tumors or tumor-like lesions. Carbon-carbon artificial humeral head prosthesis: suitable for a large range of comminuted fractures of the humeral head and neck or head and neck tumors or tumor-like lesions.

[0014] According to the characteristics of the humeral head of adults, the applicant of the present invention has made respectively carbon-titanium, carbon-carbon and ...

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Abstract

The artificial carbon humeral prosthesis consists of carbon humeral ball and carbon humeral handle, the humeral ball has fixing slot in its bottom and the humeral handle comprises fixing column and humeral handle rod. The fixing column is embedded into the fixing slot, and the axis of the humeral ball joint surface and the axis of the humeral handle rod form one angle of 135-145 deg. The humeral carbon ball of the present invention has high mechanical strength and high chemical stability, no cell toxicity, no irritability, no genetic toxicity, good biocompatibility, elastic modulus near that of bone, osteoplastic activity and lubricating property. The humeral handle has high mechanical strength, high corrosion resistance and good biocompatibility. The present invention is suitable for use in case of replacing humerus.

Description

technical field [0001] The invention relates to the improvement of an orthopedic artificial prosthesis, in particular to a carbon artificial humeral head prosthesis, which belongs to the prosthesis in medicine. Background technique [0002] The research and application of humeral head prosthesis in foreign countries began at the end of the 20th century, but its material selection is nothing more than metal materials (such as cobalt, chromium, molybdenum alloy materials) or polymer materials, and the structure is integrated, which has certain advantages. There are metals with large elastic modulus, which are easy to be electrolyzed and cause metal fatigue; polymer materials are easy to age, produce toxic reactions in the monomer state, and have carcinogenic factors; and they all lack lubricity and poor biocompatibility. There are also certain defects in the structure. After being implanted into the human body, it is easy to loosen and rotate, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61F2/30A61F2/40
CPCA61F2/40A61F2002/30001
Inventor 陈明钊胡明张静兰尚文陈兰田孙权张勇王成华徐扬车琪赵德本陈虹
Owner JILIN CENT HOSPITAL
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