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Preparation method of temperature-controlled intelligent drug release system based on titanium dioxide nanotube array

A technology of nanotube array and titanium dioxide, which is applied in the fields of pharmaceutical formulation, drug delivery, medical science, etc., to achieve the effect of high drug utilization

Active Publication Date: 2021-12-28
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these systems, there is no one that starts with the most direct manifestation of the inflammation of the affected area (when the affected area is inflamed, the temperature of the affected area rises), and fundamentally the actual environment of the human body can only control the release. The present invention starts from this point Starting with the establishment of a temperature-controlled intelligent drug release system based on titanium dioxide nanotube arrays, it can meet the requirements of on-demand and intelligent drug release according to the actual environment of the human body after the system is implanted, so as to ensure that the purpose of intelligent drug release is achieved. , improve drug utilization

Method used

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  • Preparation method of temperature-controlled intelligent drug release system based on titanium dioxide nanotube array
  • Preparation method of temperature-controlled intelligent drug release system based on titanium dioxide nanotube array
  • Preparation method of temperature-controlled intelligent drug release system based on titanium dioxide nanotube array

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Effect test

Embodiment 1

[0024] Titanium as the substrate, sanded to smooth with metallographic sandpaper, ultrasonically cleaned in acetone and cleaned in HF and HNO 3 etched in a mixed acid solution (volume ratio 1:15), rinsed with distilled water and ultrasonicated, and dried at 50°C. The pretreated titanium sheet is used as the anode, the platinum sheet is used as the cathode, and the glycerin / water (glycerol to water volume ratio 1:7) system containing 0.30wt% ammonium fluoride is used as the electrolyte solution. After anodic oxidation at 60V for 24h , take it out, wash it with distilled water, and dry it in the air to get the titanium dioxide nanotube array, the microscopic morphology is as follows Figure 1a , Figure 1b As shown, the nanotubes are closely arranged and regular, and the diameter of the tube is about 210nm.

Embodiment 2

[0026] Titanium as the substrate, sanded to smooth with metallographic sandpaper, ultrasonically cleaned in acetone and cleaned in HF and HNO 3 etched in a mixed acid solution (volume ratio 1:15), rinsed with distilled water and ultrasonicated, and dried at 50°C. The pretreated titanium sheet is used as the anode, the platinum sheet is used as the cathode, and the glycerin / water (glycerol to water volume ratio 1:7) system containing 0.30wt% ammonium fluoride is used as the electrolyte solution. After anodic oxidation at 60V for 24h , take it out, wash it with distilled water, and dry it in the air to get the titanium dioxide nanotube array, the microscopic morphology is as follows Figure 1a , Figure 1b As shown, the nanotubes are closely arranged and regular, and the diameter of the tube is about 210nm.

[0027] Heat 0.01g of ibuprofen (IBU) and 0.02g of tetradecyl alcohol (TD) in a water bath at 50°C, and keep stirring until the two are moderate and uniform, then place the...

Embodiment 3

[0029] Titanium as the substrate, sanded to smooth with metallographic sandpaper, ultrasonically cleaned in acetone and cleaned in HF and HNO 3 etched in a mixed acid solution (volume ratio 1:15), rinsed with distilled water and ultrasonicated, and dried at 50°C. The pretreated titanium sheet is used as the anode, the platinum sheet is used as the cathode, and the glycerin / water (glycerol to water volume ratio 1:7) system containing 0.30wt% ammonium fluoride is used as the electrolyte solution. After anodic oxidation at 60V for 24h , take it out, wash it with distilled water, and dry it in the air to get the titanium dioxide nanotube array, the microscopic morphology is as follows Figure 1a , Figure 1bAs shown, the nanotubes are closely arranged and regular, and the diameter of the tube is about 210nm.

[0030] Heat 0.1g IBU and 0.2g TD in a 50°C water bath, and keep stirring until the two are moderate and uniform, and place them in a water bath to maintain 50°C to obtain a...

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Abstract

The invention discloses a preparation method of a temperature-controlled intelligent drug release system based on a titanium dioxide nanotube array, and its purpose is to provide a temperature-controlled intelligent drug release system, which is characterized in that a titanium sheet is used as an anode and anodized to prepare a titanium dioxide nanotube array ; Tetradecyl alcohol was used as a temperature control switch, and ibuprofen was used as an anti-inflammatory drug. The two were blended in a water bath at 50°C, and loaded into titanium dioxide nanotube arrays by vacuum drying. The present invention is characterized in that: fundamentally according to the environment of the body, the anti-inflammatory drug is released when the affected area is inflamed, and released in a small amount or not when there is no inflammation, so as to reduce or avoid postoperative pathological changes caused by inflammation, improve the utilization rate of the drug at the same time, and avoid The side effects of some drugs harm the human body. The system can be loaded with other myristyl alcohol-soluble anti-inflammatory drugs. And in the future, based on the research of this system, other materials with good photothermal conversion effects will be introduced to design and develop a near-infrared light-controlled intelligent drug delivery system.

Description

technical field [0001] The invention belongs to the technical field of preparation of bone repair biological materials and drug slow-release carriers, and in particular relates to a method for preparing a temperature-controlled intelligent drug release system based on titanium dioxide nanotube arrays. Background technique [0002] In orthopedic (implantation) surgery, most of the implant materials used are biomedical materials with high frequency and good effect-titanium and its alloys. This kind of material has many advantages that other biomedical materials do not have. Its comprehensive The performance is also the most excellent, for example, good biocompatibility, corrosion resistance, fatigue resistance, and its low elastic modulus is close to that of human bones and teeth. Therefore, in recent years, the application field and application degree of this kind of material are very wide, and it is also considered to be the most ideal and most promising biomedical metal mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/30A61L27/28A61L27/06A61L27/50A61L27/54A61L27/56C25D11/26
CPCA61L27/06A61L27/28A61L27/306A61L27/50A61L27/54A61L27/56C25D11/26A61L2300/602A61L2300/41A61L2400/18A61L2420/02A61L2400/12
Inventor 刘楠楠谢春玲陈顺玉肖秀峰
Owner FUJIAN NORMAL UNIV