A kind of sodium dichlorophenolate micro-pill pharmaceutical preparation and preparation method thereof
Technical field
The present invention relates to field of medicine preparations, relate in particular to a kind of sodium dichlorophenolate micro-pill pharmaceutical preparation and preparation method thereof.
Background technology
Diclofenac sodium (diclofenac) is the antiinflammatory of fenamic acids micropill non-steroidal, the analgesic of being developed in sixties Mo by Switzerland vapour Ba-Jia Ji company (Ciba-Geigy).The COX (epoxidase) that these article produce because of inflammatory reaction through the inhibition tissue, thus the synthetic of prostaglandin reduced.Local prostaglandin is synthetic to be reduced, and has alleviated pain perception, plays the effect of periphery property analgesic.Since patent in 1998 expires, gone on the market successively in Germany, France, Britain, Japan, Italy, the U.S. etc.Existing more than 120 countries of China that comprise in the whole world sell and clinical use at present; Since 1974, the production and sales volume increases rapidly year by year, and since 1998; The sales volume of diclofenac sodium occupies the ntipyretic analgesic medicine first place, and leading more than other antipyretic analgesic.Tablet, slow releasing pill, slow releasing tablet, slow release suppository, antiinflammatory have mainly been developed in the market with collyrium and eye drop, injection lyophilized preparation, granule, slow releasing capsule etc.Domestic gel, paster, aerosol, suppository, enteric coatel tablets, slow releasing tablet, eye drop, slow releasing capsule in addition.Though the preparation of enteric and slow release is arranged, does not all combine both.The oral back of tablet is long in the time that stomach stops, and is bigger to gastric mucosa injury.Though the slow releasing capsule dosage form has reduced the zest to stomach, he is unfavorable for lasting release, the absorption of medicine under the alkaline environment of small intestinal, causes curative effect lasting time very short.Existing technology can not fine solution to gastrointestinal untoward reaction problem and guarantee the 24h continuous and effective.
Summary of the invention
The object of the present invention is to provide a kind of GI irritation property little, the sodium dichlorophenolate micro-pill pharmaceutical preparation of bioavailability height and good patient compliance.
Another object of the present invention is to provide a kind of method for preparing of sodium dichlorophenolate micro-pill pharmaceutical preparation.
The present invention is increased to the adhesive slow-release material to contain in 2/3 the diclofenac sodium; Can obtain to receive the release layer of double-layer sustained release film control; Reuse adhesive enteric material and remaining 1/3 diclofenac sodium continue to be increased to that to obtain PH in the above-mentioned micropill dependent at the undissolved active layer of gastric, and then at active layer outerwrap slow-release material.
In order to solve the problem that exists in the background technology, the present invention adopts following technical scheme:
A kind of sodium dichlorophenolate micro-pill pharmaceutical preparation; Described pellet preparations is to be prepared into various dosage forms by micropill; Described micropill is an enteric sustained-release pellet; This micropill is made up of celphere, active layer and outer coating, and described active layer comprises diclofenac sodium, cohesive slow-release material and cohesive enteric material, and skin comprises slow-release material.
Described celphere is one or more mixing in sucrose ball core, microcrystalline Cellulose ball core, the starch ball core.
Described cohesive slow-release material be gather first ammonium acrylate ester I, methylcellulose, ethyl cellulose, hydroxypropyl emthylcellulose, Ammonio Methacrylate Copolymer TypeA, Ammonio Methacrylate Copolymer Type B, gather first ammonium acrylate ester II, polyvinylpyrrolidone, in one or more mixing.
Described cohesive enteric material is one or more mixing in polyacrylic resin II, polyacrylic resin III, Methacrylic Acid Copolymer Type A, Methacrylic Acid Copolymer Type B, the Lac.
Described outer coating contains plasticizer, and described plasticizer is one or more mixing in triethyl citrate, diethyl phthalate, certain herbaceous plants with big flowers two dibutyl phthalates.
Described pellet preparations can be prepared into capsule, tablet or granule.
Described micropill comprises following weight percentage ratio component: diclofenac sodium 30%~60%, celphere 30%~60%, adhesive slow-release material 1%~10%, adhesive enteric material 0.1%~5%.
The optimization formula diclofenac sodium 510g of preparation 1000g micropill, celphere (starch) 400g, Ammonio Methacrylate Copolymer Type A 60g, Lac 10g, diethyl phthalate 2g, Pulvis Talci 10g.
The invention also discloses a kind of method for preparing of sodium dichlorophenolate micro-pill pharmaceutical preparation, described method for preparing comprises:
1) celphere is put in the coating pan, and regulated the coating pan temperature;
2) regulating the coating pan rotating speed is 10~60 rev/mins, sprays to contain 12% slow release binder solution, makes celphere moistening, spills the principal agent diclofenac sodium in right amount with spoon then, and ventilation simultaneously makes microgranule dry; Spray adhesive property slow-release material solution makes it moistening again, repeats said process, adds the diclofenac sodium of prescription total amount 2/3, drying;
3) sieve and obtain micropill of the same size, and collect the principal agent fine powder;
4) micropill is put in the coating pan again, the coating pan rotating speed is 10~60 rev/mins, drying;
5) the adhesive enteric material solution of configuration 10%, regulating the coating pan rotating speed is 10~60 rev/mins, spray adhesive property enteric material solution, and then spill an amount of principal agent diclofenac sodium (remaining the principal agent that 1/3 diclofenac sodium and screen cloth top sieve fall).Micropill is dry, repeats said process to adding all principal agents;
6) sieve and obtain micropill of the same size, and collect the principal agent fine powder;
7) micropill is placed in the coating pan again 10~60 rev/mins of coating pan rotating speeds, drying;
8) regulate the coating pan rotating speed: 10~60 rev/mins, spray coating solution, and spill the principal agent fine powder that step 6) is collected, the repetition said process is put and is used up coating solution; The dry micropill that gets.
Described micropill is prepared into the diclofenac sodium enteric-soluble controlled-release capsule.
Described micropill is added additive of tablet be prepared into diclofenac sodium enteric slow release tablet.
Described micropill is prepared into granule.
From technology of the present invention; Whole process will experience drying 3 times, and principal agent and the adding several times of adjuvant branch, but each layer of micropill is not the simple mixing of principal agent and adjuvant in process of production; But alternately spray layer by layer each other; Until principal agent that adds ormal weight and adjuvant, and strict control production temperature and operating time, the consistent micropill of homogeneous finally obtained.Because distinctive technology of the present invention and prescription; Make its release mechanism become a kind of dual-sustained-release system of uniqueness; Promptly,, make principal agent can in the interior environment of human body complicacy, continue, stably discharge in conjunction with multilamellar semipermeable membrane coating system through skeleton disperse system.In addition, owing to adopted unique adjuvant, make micropill of the present invention not dissolve at gastric, almost harmless to gastric mucosa, and guaranteed that medicine brings into play the continuous and effective of 24h in intestinal.Improve bioavailability, guarantee the result of use of medicine.
The specific embodiment
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1: present embodiment prepares 1000g diclofenac sodium enteric sustained-release pellet and adopts following prescription:
Diclofenac sodium 510g, celphere (starch) 400g, Ammonio Methacrylate Copolymer Type A 60g, Lac 10g, diethyl phthalate 2g, Pulvis Talci 10g.
Preparation technology:
Load principal agent: starch ball core is placed in the coating pan, and regulate the coating pan temperature and put 25 ± 5 ℃.Alcoholic solution with 95% ethanol preparing A mmonio Methacrylate Copolymer Type A; The concentration of Ammonio Methacrylate Copolymer Type A alcoholic solution is 12%, and regulating the coating pan rotating speed is 30 rev/mins, sprays Ammonio Methacrylate Copolymer Type A alcoholic solution with spray gun; Discharge rate is per second 10~15g; Make starch ball core moistening, spill the principal agent diclofenac sodium in right amount with spoon then, and ventilation simultaneously makes microgranule dry; Crossing mesh is the double-deck screen cloth of 990 μ m/1180 μ m, obtains microgranule of the same size and collects the principal agent fine powder; Repeat said process then, until the diclofenac sodium of the 2/3 about 340g that adds the diclofenac sodium total amount; With 95% ethanol preparation Lac alcoholic solution, configuration concentration is 10%, and regulating the coating pan rotating speed is 30 rev/mins; Temperature is 18 ℃~23 ℃, and with spray gun spray Lac alcoholic solution, discharge rate is per second 10g~15g; Spill principal agent diclofenac sodium (the diclofenac sodium fine powder that remaining 170g diclofenac sodium and mesh screen fall) then, micropill is dry, repeats this process until adding all principal agents; Crossing mesh is the double-deck screen cloth of 990 μ m/1180 μ m, obtains microgranule of the same size and collects the principal agent fine powder.
Coating: regulating the coating pan rotating speed again is 30 rev/mins; Temperature still is 18 ℃~23 ℃, sprays Ammonio Methacrylate Copolymer Type A alcoholic solution with spray gun, and spills the principal agent fine powder of collection in right amount with spoon; Repeat this process; Spill diethyl phthalate and Pulvis Talci in right amount with spoon after adding all principal agents, repeat this process, until using up all Ammonio Methacrylate Copolymer Type A alcoholic solution.Drying is 6 hours under 40 ℃ of conditions.
The micropill cover capsule shells that obtains is got the diclofenac sodium enteric-soluble controlled-release capsule.
The diclofenac sodium enteric-soluble controlled-release capsule that present embodiment obtains can continue at intestinal within a certain period of time, the certain density diclofenac sodium of stable release; Thereby can reduce zest greatly in that the gastric dissolubility is very little to stomach; Improve bioavailability, guarantee the result of use of medicine.
The stripping of the micropill principal agent that present embodiment obtains is after dissolving in small intestinal because of the coatings of micropill; 1/3 principal agent dissolves the entering intestinal gradually, in addition because the difference of the inside and outside osmotic pressure of micropill, make that body fluid gets into micropill after; As producing inside and outside osmotic pressure after the starch particle dissolution of core; The principal agent composition is disengaged gradually, because Lac and polyacrylic resin have certain retardation to principal agent, make principal agent slowly stably to discharge again.
Technology from present embodiment; Whole process will experience drying 3 times, and principal agent and the adding several times of adjuvant branch, but each layer of micropill is not the simple mixing of principal agent and adjuvant in process of production; But alternately spray layer by layer each other; Until principal agent that adds ormal weight and adjuvant, and strict control production temperature and operating time, the final micropill that obtains unanimity.Because distinctive technology of the present invention and prescription; Make its release mechanism become a kind of dual-sustained-release system of uniqueness; Promptly,, make principal agent can in the interior environment of human body complicacy, continue, stably discharge in conjunction with multilamellar semipermeable membrane coating system through skeleton disperse system.In addition, owing to adopted unique adjuvant, make the present embodiment micropill not dissolve at gastric, almost harmless to gastric mucosa, and guaranteed that medicine brings into play the continuous and effective of 24h in intestinal.Improve bioavailability, guarantee the result of use of medicine.
Embodiment 2: present embodiment provides the agent of a kind of sodium dichlorophenolate micro-pill pharmaceutical matrix, is made by the sodium dichlorophenolate micro-pill pharmaceutical tabletting.
The preparation of micropill is identical with embodiment 1, and adds 10% (w/w) disintegrating agent, 0.5% magnesium stearate lubricant; Disintegrating agent can be selected carboxymethyl starch sodium, cross-linking sodium carboxymethyl cellulose, polyvinylpolypyrrolidone, low-substituted hydroxypropyl cellulose etc., preferred carboxymethyl starch sodium.Adopting intelligent tablet machine to carry out tabletting obtains.
Embodiment 3: present embodiment prepares 1000g diclofenac sodium enteric sustained-release pellet and adopts following prescription:
Diclofenac sodium 310g sucrose celphere 600g gathers first ammonium acrylate ester II50g
Methacrylic Acid Copolymer Type A 10g triethyl citrate 2g Pulvis Talci 10g
Preparation technology is identical with embodiment 1.The micropill that obtains is prepared into granule.
Embodiment 4: present embodiment prepares 1000g diclofenac sodium enteric sustained-release pellet and adopts following prescription:
Diclofenac sodium 600g sucrose celphere 3100g polyvinylpyrrolidone 55g
Lac 8g triethyl citrate 2g Pulvis Talci 10g
Preparation technology is identical with embodiment 1.The micropill cover capsule that obtains is obtained.
Embodiment 5: present embodiment prepares 1000g diclofenac sodium enteric sustained-release pellet and adopts following prescription:
Diclofenac sodium 350g starch celphere 580g gathers first ammonium acrylate ester 55g
Lac 8g triethyl citrate 2g Pulvis Talci 12g
Preparation technology is identical with embodiment 1.