280 results about "Poloxamer 407" patented technology

The invention discloses a baicalin thermosensitive gelatin and a preparation method and use thereof. The baicalin thermosensitive gelatin is prepared by the following steps: (1) taking the following components in percentage by weight: 0.6 to 15 percent of baicalin, 10 to 24 percent of poloxamer 407, 1 to 10 percent of poloxamer 188, 55.8 to 81.17 percent of solvent, 0 to 5 percent of viscosity modifier, and 0 to 0.2 percent of preservative; and (2) dissolving the baicalin and the preservative into the solvent, slowly adding the poloxamer 407 and the poloxamer 188 with stirring, mixing uniformly, adding the viscosity modifier, mixing uniformly, and placing the mixture into freely flowable semitransparent solution to prepare the baicalin thermosensitive gelatin. The baicalin thermosensitive gelatin is flowable liquid at normal temperature, which generates reversible phase change if affected by the body temperature after contacting with a mucous membrane or body fluid. Therefore, the medicament is tightly attached to the mucosal tissue, which is hard to leak. After the phase change is generated in the body fluid, the release rate of the medicament can be controlled.

The invention relates to a dexamethasone ophthalmic nano-cubic liquid-crystal preparation and a preparation method thereof. The dexamethasone ophthalmic nanocube crystal preparation is prepared from lipid materials, an emulsifying agent, a thickening agent, an osmotic pressure regulating agent, a bacteriostatic agent, a pH value regulating agent and purified water and characterized in that the amphipathic lipid capable of forming the cubic liquid-crystal morphology, one or more out of glyceryl monooleate (GMO), phytantriol and lecithin are adopted as the lipid materials; and the safe and non-irritant ophthalmic surfactant, one or more out of poloxamer 407 and polyvinyl alcohol (PVA) are adopted as the emulsifying agent. .The invention realizes the ophthalmic administration of dexamethasone, a fat-soluble drug, and has the advantages of high comfort level and non-irritant administration; and the invention can promote the drug to permeate into the corneal barriers after the ophthalmic administration, thereby achieving the effect of improving the ophthalmic bioavailability.

The invention discloses combination of tulathromycin and poloxamer 407. The technology comprises the following steps: preparing medicine-carrying micro-particles; further dispersing the medicine-carrying micro-particles into oil medium; and preparing a long-acting oil injection containing tulathromycin and poloxamer 407 medicine-carrying micro-particles in a grinding manner. The injection is simple in preparation technology, good in slow-release effect, good in biocompatibility, and free of an irreversible damage to the tissue of the injection part.

The invention discloses a gel composition for vagina, containing buffering agent, bioadhesive polymer, water, phase transition temperature regulator and one or more poloxamer of poloxamer 237, poloxamer338 and poloxamer407. The weight percentage of the poloxamer is 15-30 percent, the weight percentage of the phase transition temperature regulator is 1.5-6.75 percent; the weight ratio of the poloxamer and the phase transition temperature regulator is 20:1-20:9; and the pH of the composition is 3.0-5.5. The invention also discloses a preparation method of the gel composition and the application of the gel composition in preparing conception control preparation, vagina lubricant, preparation or medicament for preventing sexually transmitted diseases or medicaments for preventing gynecological diseases. The gel composition for vagina is liquid under room temperature and is semi-solid in vagina, is convenient to prepare and use, has the pH value similar to the vagina environment and has better acidic buffering capability and viscosity without damaging the vagina.

The invention relates to the field of pharmaceutical preparation, in particular relates to an azithromycin ophthalmic instant molding gel. The azithromycin ophthalmic instant molding gel is characterized in that the azithromycin ophthalmic instant molding gel comprises azithromycin, a temperature sensing substrate, carbomer, a permeation pressure conditioning agent and water for injection, wherein the temperature sensing substrate comprises poloxamer 407 and poloxamer 188. The invention further discloses a preparation method thereof. The invention uses the poloxamer 407 and the poloxamer188 as the temperature sensing substrate with good biocompatibility. The preparation is flowable fluid preparation under the condition of invitro storage; the preparation forms gel when the external environment of dropping in ocular region is changed, so as not to flow in ocular region; therefore, the pharmic action time is remarkably prolonged, time administer drug is reduced and the adaptability of the patient is improved.

The invention discloses amphipathic polysaccharide derivative/poloxamer thermo-sensitive type in-situ hydrogel and a preparation method thereof. The thermo-sensitive type in-situ hydrogel is prepared in the mode that amphipathic polysaccharide series derivatives, poloxamer polymer and hydrophobic drugs interact to form stable in-situ hydrogel, the gelatinization temperature of the thermo-sensitive type in-situ hydrogel ranges from 34 DEG C to 37 DEG C, and the gelatinization time for forming the in-situ hydrogel at the gelatinization temperature ranges from one to three minutes. The poloxamer polymer is the mixture of poloxamer 407 and any one kind of poloxamer of other types. Compared with common amphipathic/poloxamer in-situ hydrogel, the in-situ hydrogel is higher in stability and longer in drug sustained release time, parenteral drug delivery and improving of drug bioavailability are made possible, and the in-situ hydrogel can be applied to mucous membrane drug delivery, transdermal drug delivery and parenteral drug delivery systems; the preparation method of the mphipathic polysaccharide derivative/poloxamer thermo-sensitive type in-situ hydrogel is convenient to operate, simple in process and cheap in needed equipment and raw material.

The invention belongs to the technical field of preparation of medicines and in particular relates to a preparation method of ceftiofur acid long-acting injection. The preparation method comprises the followings steps of: adding ceftiofur acid and 2-hydroxypropyl-beta-cyclodextrin in a molar ratio of 1:(1-2) to a ball mill for uniformly mixing; sufficiently grinding under the room temperature, and sufficiently uniformly and sieving to obtain a ceftiofur acid clathrate compound; dissolving sodium alginate in sterile water and adding poloxamer 407 and poloxamer 188, storing for 12-24 hours under the temperature condition of 4 DEG C, so that the poloxamer 407 and the poloxamer 188 are completely dissolved and sterilized under the temperature of 121 DEG C, carrying out ice-bath cooling to obtain a transparent solution; magnetically stirring under the temperature condition of 4 DEG C and the rotation speed condition of 150r/min; adding the ceftiofur acid clathrate compound in a weight ratio of the sodium alginate to the ceftiofur acid clathrate compound of (0.1-0.3):(5-10), so that the ceftiofur acid clathrate compound is sufficiently dispersed uniformly to obtain the ceftiofur acid long-acting injection. According to the preparation method of the ceftiofur acid long-acting injection, the preparation process is simple, the product intramuscular injection half-life period is long, the dissolution degree of the ceftiofur acid is high, the production and treatment cost is low, the cure rate is high and the environment is friendly.

The invention provides Nimesulide temperature sensitive gel and a preparation method thereof. The Nimesulide temperature sensitive gel comprises Nimesulide, a temperature sensitive gel material, a pH regulator, a preservative and the like and is characterized in that: the temperature sensitive gel material is poloxamer, and the weight ratio of the poloxamer to the Nimesulide is 9:1; and the optimized temperature sensitive gel material is poloxamer 407. The temperature sensitive gel is sensitive to temperature changes, and rabbit rectum experimental results show that the temperature sensitive gel has higher medicament release rate and higher bioavailability which are obviously better than those of the conventional Nimesulide common suppositories. The Nimesulide temperature sensitive gel reserves the advantages of the conventional suppositories, overcomes the defects of the conventional suppositories to a certain extent and has a wide clinical application prospect. The Nimesulide temperature sensitive gel uses common safe pharmaceutical excipients, has a simple production process, stable and easily-controlled quality and high process reproducibility, and is suitable for industrial production.

The invention discloses azithromycin eye drops and a preparation method thereof, the azithromycin eye drops comprise the following components by weight: 0.5-2.0% of azithromycin or azithromycin salt, 0-1.5% of cosolvent, 0.2-10% of poloxamer 407, 0.1-1.5% of deacetylated gellan gum, 0.1-9% of osmotic pressure regulator, 0.001-2% of antiseptic; pH value is adjusted to 5.5-7.5 by a pH conditioning agent, and injection water is the balance. The azithromycin eye drops contain ion sensitive and temperature sensitive gel matrix, and has dual gelling characteristic, compared with usage of a single matrix, the azithromycin eye drops have better characteristic, preparation technology is reasonable, stability of the azithromycin eye drops can be guaranteed, metering is easily and accurately controlled, little loss can be avoided, the therapeutic time of the medicine can be maintained for a longer time, the side effect is less, the azithromycin eye drops have good biocompatibility without influence of eyesight, and the survivability of the patients is good.

The invention discloses a temperature-sensitive gel for a skin injury and a preparation method of the temperature-sensitive gel and relates to the technical field of skin repair administration. The temperature-sensitive gel is prepared from the following raw materials in parts by weight: 5-20 parts of poloxamer 407, 0.01-0.1 part of a bacteriostatic agent, 0.001-0.05 part of a human epidermal growth factor, 0.2-1.0 part of a humectant, 2-10 parts of sodium hyaluronate and the balance of water for injection water. The temperature-sensitive gel is prepared from the poloxamer 407 as a main raw material, and exists in a solution form at a low temperature; administration is convenient; the temperature-sensitive gel is converted into a gel state at a high temperature and is smooth and soft in surface, free of thrill to the administration part, free of foreign body sensation and good in biocompatibility; the sodium hyaluronate is very high in biocompatibility, beneficial to long-term moisture retention of the skin and beneficial to tissue cell regeneration and is capable of compacting the skin and preventing dehydration; and the human epidermal growth factor has an acceleration effect on mucosa repairing of the skin injury, so that the wound healing cycle is shortened to meet the structure design and clinical requirements.

The invention discloses an oily long-acting injection containing antibacterial drug/poloxamer 407 drug-loading particles, which is prepared by combining the antibacterial drug with poloxamer 407 into drug-loading particles and further dispersing the drug-loading particles into an oily medium and grinding. Hydroxypropyl methyl cellulose or high-substituted hydroxypropyl cellulose also can be added into the drug-loading particles, and the sustained-release effect of the preparation is obviously enhanced. The preparation process of the injection is simple, the drug release is uniform, the biocompatibility is good, irreversible damage to the tissue of the injection part is avoided, and the adopted sustained-release carrier can be degraded and excreted.

The invention relates to emodin solid dispersion, a drug-containing pellet core, a colonic targeted micropill, and applications of the three. The emodin solid dispersion is prepared from emodin and a carrier material, wherein the carrier material is one or several selected from poloxamer 188, poloxamer 407, Kollidon 12 PF, Kollidon VA 64, Kollicoat IR or Soluplus, and the weight ratio of emodin to the carrier material is 1:2-1:15. The drug-containing pellet core and the colonic targeted micropill both contain the emodin solid dispersion. The emodin solid dispersion is substantially improved in solubility of indissolvable drug emodin; and the targeted micropill helps to realize colonic positioning release in vivo/vitro of emodin, and has substantial protective effect on intestinal barrier of a rat severe acute pancreatitis pancreatitis model.

This invention relates to the topical treatment of the Carpal Tunnel Syndrome by the use of a selected protein kinase C inhibitor and an effective penetrating agent selected from lecithin organogel or poloxamer 407 lecithin organogel. The protein kinase C inhibitors may be selected from sphingosine, sphinganine, phytosphingosine, curcumin, tetrahydrocurcumin, curcuminoids or apigenin.