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Antibacterial shape memory polyurethane orthopedic, fixing and rehabillitative plate and preparation method thereof

A technology of polyurethane and polyurethane solution, which is applied in fractures, medical science, and pharmaceutical formulations, etc. It can solve the problems that splints do not have antibacterial function, are expensive, and breed bacteria, and achieve the effects of wide application range, low cost, and strong air permeability

Inactive Publication Date: 2005-09-21
胡金莲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of low-temperature thermoplastic splint is expensive, so its promotion in China has been greatly restricted; in addition, this type of splint does not have antibacterial function, and bacteria still breed on the affected part of the patient in summer, leading to infection of the affected part

Method used

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  • Antibacterial shape memory polyurethane orthopedic, fixing and rehabillitative plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Add 100 kg of reversible phase components polycaprolactone diol (number-average molecular mass: 10,000), 5.0 kg of 4,4'-xylene methane diisocyanate, and 500 kg of dimethylformamide into 1000L with agitator and thermometer And in the reaction kettle of the reflux condenser, react at a temperature of 75-80°C for 2 hours. Then add 5.4 kg of stationary phase components 1,4-butanediol, 2.38 kg of N-methyldiethanolamine, 17.5 kg of 4,4'-diphenylmethane diisocyanate, control the temperature at 80-85°C, and react for 3-4 hours Finally, 80.0 kg of dimethylacetamide was added to adjust the viscosity to obtain a colorless to light yellow, viscous polyurethane solution.

[0055] Through theoretical calculation, the mass percentage of the stationary phase in the polyurethane obtained in this example is 23.2%; the mass percentage of the reversible phase of the reversible phase is 76.8%; the crystallization melting point temperature of the reversible phase and the glass transition tem...

Embodiment 2

[0057] The reversible phase component polyethylene adipate diol (PHEP, relative molecular weight 4000) 40 grams, polybutylene adipate diol (PHB) 40 grams, 2,4-toluene diisocyanate 6.96 gram, 150 grams of dimethyl sulfoxide was added into a 500 mL reaction kettle equipped with a stirrer, a thermometer and a reflux condenser, and reacted at a temperature of 80° C. for 2-3 hours. Then add 4.05 grams of N-methyldiethanolamine, 4.72 grams of 1,6-hexanediol, 18.25 grams of 4,4'-diphenylmethane diisocyanate, and control the temperature at 75-80 ° C for 3-4 hours Finally, 100 grams of dimethylformamide was added to adjust the viscosity to obtain a colorless to light yellow, viscous polyurethane solution.

[0058] Through theoretical calculation, the mass percentage of the stationary phase in the polyurethane obtained in this example is 30%; the mass percentage of the reversible phase of the reversible phase is 70%; the crystallization melting point temperature of the reversible phase ...

Embodiment 3

[0060] The reversible phase component polyethylene adipate diol (PHEP, relative molecular mass 1000) 15 kilograms, polybutylene adipate diol (PHB, relative molecular mass 2000) 15 kilograms, 2,4 - Add 6.83 kg of methane diisocyanate and 100 kg of dimethylformamide into a 500 L reaction kettle equipped with a stirrer, a thermometer and a reflux condenser, and react at a temperature of 75-80° C. for 2.5 hours. Then add 1.56 kg of stationary phase components 1,2-ethanediol and 1.50 kg of diethylene glycol, 2.0 kg of nicotinamide, 5.0 kg of 4,4'-diphenylmethane diisocyanate, temperature control 75 ° C, reaction 3 After one hour, 100 grams of dimethylformamide was added to adjust the viscosity to obtain a colorless viscous polyurethane solution.

[0061] Through theoretical calculation, the mass percentage of the stationary phase in the polyurethane obtained in this embodiment is 35%; the mass percentage of the reversible phase of the reversible phase is 65%; the crystallization me...

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Abstract

The invention disclose an antibacterial shape memory polyurethane orthopedic, fixing and rehabillitative plate and preparation method, wherein the sheet material comprises shape memory polyurethane 95-75 weight parts, antibacterial agent 1.5-3 weight parts, mineral filler 5-25 weight parts.

Description

1. Technical field [0001] The invention relates to an antibacterial shape-memory polyurethane orthopedic and solid rehabilitation plate and a preparation method thereof, belonging to the field of medical biological materials. 2. Technical background [0002] Common medical orthopedic fixation materials generally include plaster bandages and resin bandages. Although these traditional medical external fixation materials have been widely used clinically, on the one hand, it is extremely inconvenient for doctors to use, because gypsum boards are bulky, high-density, and inflexible in shaping, and cannot fix some delicate parts On the other hand, the patient feels very uncomfortable, and the heavy patient can hardly bear its load. The patient with a fracture cannot dress like a normal person in winter, and it is difficult to keep warm; Infect. Therefore, as early as more than 20 years ago, foreign scientists have begun to research and develop various products that can be used t...

Claims

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Application Information

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IPC IPC(8): A61F5/01A61F5/04A61L27/18A61L27/50A61L31/00A61L31/04A61L31/06A61L31/14C08L75/04
CPCA61F5/01C08G2280/00A61L2400/16C08L75/04A61L27/18A61L31/06A61L27/50A61L31/14
Inventor 范浩军李玲彭茂先石碧范新年
Owner 胡金莲
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