Intelligent temperature-sensitive sustained-release gel and preparation method thereof

A slow-release gel, temperature-sensitive technology, applied in the direction of making medicines into special physical or taking forms of devices, emulsion delivery, topical antibacterial agents, etc. Completely filling the root canal, losing the antibacterial ability, etc., to achieve the effect of easy repeated application, simple and convenient removal, and excellent effect

Inactive Publication Date: 2014-05-14
凌春生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many studies have shown that FC has systemic toxic and side effects, and the drug will lose its antibacterial ability after being sealed in the root canal for 24 hours under the influence of saliva, blood, plasma, exudate and many bacterial products; calcium hydroxide paste, iodoform Paste, polymer gel, etc. are solid or semi-solid preparations, and the root canal has a small pore size and many fine branches. ...

Method used

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Examples

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preparation example Construction

[0021] The preparation method of the present invention is: a cold-melt preparation method and a film dispersion method;

[0022] Cold-melt preparation method: Dissolve the prescribed amount of main drug and polyethylene glycol-6000 in an appropriate amount of distilled water, stir to dissolve, then add the prescribed amount of Poloxamer 407 and Poloxamer 188 to stir and disperse, and then add 4 ℃ refrigerator for 24 hours, a clear and transparent solution can be obtained;

[0023] Thin-film dispersion method: Weigh the main drug and PLGA-PEG-PLGA block copolymer in the prescribed amount, dissolve with an appropriate amount of acetone, and then remove the acetone by rotary evaporation under reduced pressure. The drug is evenly dispersed in the film formed by the polymer, and distilled water or The buffer solution hydrates the film to form a drug-loaded micellar solution.

Embodiment 1

[0025] Dissolve 5 parts of ornidazole and 0.5 parts of polyethylene glycol-60000 in an appropriate amount of distilled water, stir to dissolve, then add 40720 parts of poloxamer and 1882.5 parts of poloxamer and stir to disperse, and then put it in a refrigerator at 4°C for 24 hours. A clear and transparent solution was obtained.

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PUM

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Abstract

The invention discloses an intelligent temperature-sensitive sustained-release gel and a preparation method thereof. The intelligent temperature-sensitive sustained-release gel comprises the following components in percentage by weight: 15-25 percent basic remedy, in-situ gel material and water, 2-3 percent of poloxamer 188, 0.5-1 percent of polyethylene glycol-6000, 5-7 percent of ornidazole and 60-70 percent of distilled water. An intelligent temperature-sensitive sustained-release in-situ gel drug-loading system is prepared by combining medicaments with different types of high molecular carrier materials, and is applied to root canal treatment for the first time, so that the defects that the lasting time of the conventional root canal disinfecting and sterilizing effects is short, root canals cannot be fully filled with medicaments under the limitation of dosage form and the like are overcome, the root canal disinfecting operation is simplified, and the double effects of sustained-release long-acting treatment and root canal enclosing are achieved. The one-time success rate of root canal treatment is increased, and the intelligent temperature-sensitive sustained-release gel has an important practical value on the treatment of pulposis, pulpitis and periapical periodontitis and the like.

Description

technical field [0001] The invention relates to a pharmaceutical preparation, in particular to an intelligent temperature-sensitive slow-release gel and a preparation method thereof. Background technique [0002] At present, dental diseases are common in the population, and most people have weak awareness of prevention and treatment, which can easily cause deterioration, lead to deep-seated lesions of teeth, and cause unbearable pain. Common such as pulp disease and periapical disease, the culprit is Bacterial infections. [0003] Root canal therapy is the main treatment for pulp disease and periapical disease in stomatology, and root canal disinfection is an important step in root canal therapy. Root canals treated by mechanical and chemical methods still have some necrotic substances or microorganisms in the deep layer of dentin on the side walls, side branch root canals and around the root apex. In order to further eliminate or reduce microorganisms and promote the heali...

Claims

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Application Information

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IPC IPC(8): A61K9/06A61P31/02A61P1/02A61J3/00
Inventor 凌春生郭新社王海燕赵瑛张丹赵净净周浩
Owner 凌春生
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