Solvent-cast microprotrusion arrays containing active ingredient
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B28B-007/10
A61M-037/00
A61K-009/00
A61K-038/29
A61K-038/38
출원번호
US-0939123
(2013-07-10)
등록번호
US-9452280
(2016-09-27)
발명자
/ 주소
Singh, Parminder
Worsham, Robert Wade
Trautman, Joseph C.
Bayramov, Danir
Bowers, Danny Lee
Klemm, Andy
Klemm, Steven Richard
Chen, Guohua
출원인 / 주소
Corium International, Inc.
대리인 / 주소
Mahoney, Jacqueline F.
인용정보
피인용 횟수 :
3인용 특허 :
226
초록▼
In an aspect of the invention, an array of microprotrusions is formed by providing a mold with cavities corresponding to the negative of the microprotrusions, casting atop the mold a first solution comprising a biocompatible material and a solvent, removing the solvent, casting a second solution ato
In an aspect of the invention, an array of microprotrusions is formed by providing a mold with cavities corresponding to the negative of the microprotrusions, casting atop the mold a first solution comprising a biocompatible material and a solvent, removing the solvent, casting a second solution atop the first cast solution, removing the solvent from the second solution, and demolding the resulting array from the mold. The first solution preferably contains an active ingredient.
대표청구항▼
1. A method of making a microstructure array, comprising: dispensing onto a mold having an array of microstructure cavities a formulation comprising a polymer, a therapeutic agent and a solvent, said formulation being dispensed in an amount sufficient to at least partially fill the microstructure ca
1. A method of making a microstructure array, comprising: dispensing onto a mold having an array of microstructure cavities a formulation comprising a polymer, a therapeutic agent and a solvent, said formulation being dispensed in an amount sufficient to at least partially fill the microstructure cavities, said dispensing being carried out in presence of a gas having a solubility in the formulation or the mold that is greater than the solubility of air in the formulation or the mold;drying the formulation; anddemolding from the mold a microstructure array. 2. The method of claim 1, wherein the gas is carbon dioxide. 3. The method of claim 1, wherein the gas is more soluble in the formulation or the mold than oxygen. 4. The method of claim 1, further comprising: dispensing a second formulation on the mold surface to form a second layer; anddrying the second layer. 5. The method of claim 4, further comprising: affixing a backing to the second layer. 6. The method of claim 5, wherein the backing comprises polyethylene terephthalate. 7. The method of claim 1, wherein said dispensing is carried out at atmospheric pressure. 8. The method of claim 1, wherein said dispensing is carried out at a pressure higher than atmospheric pressure. 9. The method of claim 1, wherein the therapeutic agent is selected from a drug, a small molecule, a peptide or protein, or a vaccine. 10. The method of claim 1, further comprising: prior to said dispensing, dissolving or suspending the therapeutic agent and the polymer in a solvent to form the formulation. 11. The method of claim 10, wherein the solvent is water. 12. The method of claim 10, wherein the formulation further comprises at least one sugar. 13. The method of claim 12, wherein the sugar is selected from the group consisting of sorbitol, sucrose, trehalose, fructose, and dextrose. 14. The method of claim 10, wherein the formulation further comprises a surfactant. 15. The method of claim 14, wherein the surfactant is polysorbate. 16. The method of claim 10, wherein the formulation further comprises an antioxidant. 17. The method of claim 16, wherein the antioxidant is selected from the group consisting of methionine, cysteine, D-alpha tocopherol acetate, EDTA, and vitamin E. 18. The method of claim 1, wherein prior to said dispensing, the mold is subjected to a surface treatment over at least a portion of its surface. 19. The method of claim 1, wherein said drying is performed under vacuum.
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Singh, Parminder; Worsham, Robert Wade; Trautman, Joseph C.; Bayamov, Danir; Bowers, Danny Lee; Klemm, Andrew Richard; Klemm, Steven Richard; Chen, Guohua, Solvent-cast microprotrusion arrays containing active ingredient.
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