Polyurethane thermoplastic bone fixing plate and preparation method thereof

A thermoplastic and polyurethane technology, applied in medical science, surgery, etc., can solve the problems of prone to skin allergies, medical gypsum boards and gypsum bandages, etc., improve daily life, is conducive to popularization and application, and has a simple preparation method easy effect

Active Publication Date: 2014-12-17
东莞宏石功能材料科技有限公司
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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 address the deficiencies of the prior art, and provide a polyurethane thermoplastic bone fixation plate with high support pe

Method used

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  • Polyurethane thermoplastic bone fixing plate and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0047] The preparation method of the polyurethane thermoplastic bone fixation plate of the present embodiment comprises the following preparation steps:

[0048] a, 90 parts by weight of polyester polyol, 25 parts of 4,4-MDI, 25 parts of 2,4-MDI, 2 parts of ethylene glycol, 1 part of propylene glycol, 2 parts of 1, Add 3-butanediol, 3 parts of 1,4-butanediol, and 1 part of 2-methyl-1,3-propanediol into the twin-screw extruder, and react at a temperature of 220°C to extrude Granulating to obtain polyurethane granules;

[0049] Among them, the polyester polyol is made of a mixture of succinic acid, adipic acid and ethylene glycol, 1,3-butanediol, and 1,4-butanediol in a molar ratio of 1.03:1 through a vacuum melting method. It is formed by dealcoholization and dehydration polycondensation. In the vacuum melting method, the above ratio of raw materials is firstly subjected to the initial esterification reaction at 120°C for 2 hours, then the temperature is raised to 180°C, and t...

Embodiment 2

[0053] The preparation method of the polyurethane thermoplastic bone fixation plate of the present embodiment comprises the following preparation steps:

[0054] a, be the polyester polyol of 95 parts by weight, the MDI-50 of 20 parts, the H of 25 parts 12 MDI, 2 parts of hexanediol, 2 parts of 3-methyl-1,5-pentanediol, 2 parts of 1,4-cyclohexanedimethanol, 2 parts of hydroquinone bis(2-hydroxyethyl Base) ether into the twin-screw extruder, and react at a temperature of 250 ° C, extrude and granulate to obtain polyurethane granules;

[0055]Among them, the polyester polyol is a mixture of azelaic acid, sebacic acid and diethylene glycol, neopentyl glycol, 2-methyl-1,3-propanediol according to the molar ratio of 1.14:1 through the vacuum melting method It is formed by dealcoholization and dehydration polycondensation. Firstly, the above ratio of raw materials is subjected to initial esterification reaction at 130°C for 1.75h, then the temperature is raised to 200°C, and the hy...

Embodiment 3

[0059] The preparation method of the polyurethane thermoplastic bone fixation plate of the present embodiment comprises the following preparation steps:

[0060] A, be the polyester polyol of 100 parts by weight, the HDI of 15 parts, the XDI of 15 parts, the IPDI of 10 parts, the 4-hydroxyethyloxyethyl-1-hydroxyethyl phenylene diether of 3 parts, 2 parts of resorcinol-bis(β-hydroxyethyl) ether and 1 part of 3-hydroxyethyloxyethyl-1-hydroxyethyl phenylene ether were added to the twin-screw extruder, and heated at 230°C React at a certain temperature, extrude and granulate to obtain polyurethane granules;

[0061] Among them, the polyester polyol is a mixture of sebacic acid, terephthalic acid, phthalic anhydride, hexanediol, 3-methyl 1,5-pentanediol, 1,4-cyclohexanedimethanol, and glycerin According to the molar ratio of 1.25:1, it is produced through dealcoholization and dehydration polycondensation by the vacuum melting method. In the vacuum melting method, the raw materials...

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Abstract

The invention relates to the technical field of thermoplastic bone fixing plates and strings, particularly to a polyurethane thermoplastic bone fixing plate and a preparation method thereof. The polyurethane thermoplastic bone fixing plate is made from,, by part, 40-80 parts of polyurethane plastic particles, 10-50 parts of engineering plastics, 0-30 parts of soft modified materials, 0-10 parts of fillers and 0.1-2 parts of antioxygen. The polyurethane thermoplastic bone fixing plate is made of medical polymer materials with high supporting performance and accordingly is dismountable, reusable and plastic, meanwhile, can obtain good adhesiveness and provide supporting and fixing effects according to the detailed shapes of different wounded positions, is breathable, sweat-proof and capable of avoiding side effects such as skin irritation and allergy, also, is recyclable, naturally degradable and environmentally friendly, and when replacing traditional gypsum materials for clinical orthopedic exterior fixation, can greatly improve the living conditions for rehabilitation of a patient. The preparation method of the polyurethane thermoplastic bone fixing plate is simple, mature, high in production efficiency and applicable to generalized popularization and application.

Description

technical field [0001] The invention relates to the technical field of bone fixation plates, in particular to a polyurethane thermoplastic bone fixation plate and a preparation method thereof. Background technique [0002] Usually, when human bones are broken, fractured, or ligaments are stretched or ruptured, orthopedic splints are needed to partially or completely tightly support and fix the injured joints and muscles, and the materials used for the splints need to be flexible enough, so that it can be easily molded to follow the curved shape of the injured body part. [0003] At present, gypsum boards and gypsum bandages are usually used to treat human bones or fractures. However, the existing gypsum boards and gypsum bandages are prone to deliquescence, dust pollution, water consumption and difficult shaping, easy to cause water pollution, and heavy molding. , fragility, poor X-ray permeability, long curing time, water avoidance, troublesome disassembly, etc., and canno...

Claims

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Application Information

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IPC IPC(8): A61L31/14C08L23/06C08L23/08C08L75/06C08G18/42A61L31/06C08L67/02C08L33/12C08L27/06C08L31/04C08L33/20C08L77/00B29B9/06C08L25/06A61L31/04C08G18/66C08L23/12
Inventor 刘殷良
Owner 东莞宏石功能材料科技有限公司
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