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All-biological controllable and degradable bone nail and using method thereof

An all-biological, bone-nail technology, applied in internal bone synthesis, medical science, fastening devices, etc.

Inactive Publication Date: 2013-08-28
吉林金源北方科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This study is the first to use fully biodegradable materials combined with magnesium alloy materials to adjust the degradation rate of bone screws through different component distribution ratios. There is no report of this kind of fully biodegradable composite bone screws at home and abroad.

Method used

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  • All-biological controllable and degradable bone nail and using method thereof
  • All-biological controllable and degradable bone nail and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: Take a number of carbon dioxide copolymers and additives, and the composition parts by weight are: 100 parts of carbon dioxide copolymers, 5-15 parts of additives. Dry for 8 hours, use plastic processing methods such as mixing, granulation, extrusion and calendering, and punching to make outer layer threaded bone screws. The center of the outer layer threaded bone nails is made into a threaded hole, and the rear end of the outer layer screw is made into a standard " The "cross" screw is used to implant it into the bone hole, and the magnesium alloy screw is installed in the threaded hole, and the top of the magnesium alloy nut is also designed as a standard "cross" screw for implanting it into the outer threaded nail Inside, the parts by weight of the magnesium alloy are: 100 parts of magnesium alloy: 1-3 parts of manganese: 0.5-2 parts of zinc: 1-5 parts of Ca. The magnesium alloy screw is used in conjunction with the outer layer screw. After the magnesi...

Embodiment 2

[0019] Embodiment 2: A number of carbon dioxide copolymers and additives are taken, and the composition parts by weight are: 100 parts of carbon dioxide copolymers, 10-50 parts of additives. Dry for 8 hours, use plastic processing methods such as mixing, granulation, extrusion and calendering, and punching to make outer threaded bone screws. The center of the outer layer threaded bone nails is made into a threaded hole. A longitudinal notch is made on the rear end of the outer layer screw to make a standard "cross-shaped" thread for implanting it into the bone hole. Magnesium alloy screws are installed in the threaded hole, and the top of the magnesium alloy nut is also designed to be a standard "cross-shaped" thread. The "cross" screw is used to implant it into the outer threaded nail. The composition of the magnesium alloy is: 100 parts of magnesium alloy: 1-3 parts of manganese: 0.5-2 parts of zinc: 1-5 parts of Ca. The magnesium alloy threaded nail is used in combination w...

Embodiment 3

[0020] Embodiment 3: A number of carbon dioxide copolymers and additives are taken, and the composition parts by weight are: 100 parts of carbon dioxide copolymer, 10-50 parts of additives. After drying for 8 hours, the solid threaded bone nail is made by plastic processing methods such as mixing, granulation, extrusion and calendering, and punching, which can be used as a bone marrow fixation nail.

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Abstract

The invention relates to a novel all-biological controllable and degradable bone nail and a using method thereof. The bone nail is formed by combining an outer layer of threaded nail, an inner layer of magnesium alloy threaded nail and sealant, wherein the outer layer of threaded nail has the main component of carbon dioxide copolymer, and is prepared by a plastic processing method comprising the steps of: mixing material, pelleting, extruding, rolling, punching and the like; the center of the bone nail is provided with a threaded hole; a rabbet is formed in the front end of the bone nail; a standard 'cross-shaped' screw hole is formed in the position of a screw cap of the outer layer of threaded nail, and the outer layer of threaded nail can be implanted into a bone hole by the screw hole; and the inner layer of threaded nail made of magnesium alloy can be arranged in the threaded hole. The outer layer of threaded nail is combined with the inner layer of threaded nail, a specific amount of sealant made of ethyl methyl carbonate or ethyl acetate is coated at the exposed parts, the outer layer of threaded nail, the inner layer of threaded nail and the sealant can be used in a combined way or separately used, and the outer layer of threaded nail can be taken as a bone marrow fastening nail.

Description

technical field [0001] The invention belongs to the field of fully biodegradable bone nails, and relates to a fully biodegradable bone nail combined with a carbon dioxide copolymer, a magnesium alloy and a sealant and a method for using the same. Background technique [0002] In medicine, bone nails are commonly used medical devices in the process of bone repair. Traditional bone screws are made of metal materials and their alloys or ceramics. These materials have the advantages of high strength and good toughness. The disadvantage is that the stress shielding effect is obvious, and after the patient recovers, a second operation is required to remove the metal bone screw. , bringing secondary pain to the patient, while the cavity left after the secondary operation increases the risk of fracture again. Absorbable bone nails based on degradable materials overcome many shortcomings caused by traditional bone nail materials. [0003] Carbon dioxide copolymer materials are non...

Claims

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Application Information

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IPC IPC(8): A61L31/06A61L31/02A61B17/86
Inventor 马殿栋冯超王绍伟
Owner 吉林金源北方科技发展有限公司
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