Bioadhesive drug formulations for oral transmucosal delivery
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61K-009/20
A61K-009/00
A61K-031/4468
출원번호
US-0595879
(2012-08-27)
등록번호
US-8865211
(2014-10-21)
발명자
/ 주소
Tzannis, Stelios
Hamel, Larry
Palmer, Pamela
Schreck, Thomas
Poutiatine, Andrew I.
출원인 / 주소
AcelRx Pharmaceuticals, Inc.
대리인 / 주소
Cooley LLP
인용정보
피인용 횟수 :
6인용 특허 :
170
초록
Bioadhesive drug formulations that adhere to an oral mucosal membrane of a subject are provided together with single dose applicators and devices for delivering the drug formulations to the oral mucosa, and methods for using the same.
대표청구항▼
1. A method of treating pain in a subject, comprising administering a bioadhesive tablet to the oral mucosa of a subject, wherein said tablet comprises:(a) from about 2.5 to about 100 micrograms of sufentanil, expressed as the base; and(b) a bioadhesive material, wherein said bioadhesive material pr
1. A method of treating pain in a subject, comprising administering a bioadhesive tablet to the oral mucosa of a subject, wherein said tablet comprises:(a) from about 2.5 to about 100 micrograms of sufentanil, expressed as the base; and(b) a bioadhesive material, wherein said bioadhesive material provides for adherence to the oral mucosa of said subject, and(c) said tablet has a volume of from about 0.1 microliters to about 50 microliters,wherein after administration of said tablet to said subject, said tablet provides a minimal saliva response and minimal swallowing of sufentanil; and more than 50% of drug delivery of sufentanil occurs via the oral transmucosal route. 2. The method according to claim 1, wherein said tablet forms a hydrogel upon contact with an aqueous fluid. 3. The method according to claim 1, wherein said tablet is an eroding tablet wherein upon contact with an aqueous fluid, the surface of the tablet hydrates and erodes, without formation of a hydrogel. 4. The method according to claim 1, wherein upon contact with an aqueous fluid said tablet disintegrates and forms a film. 5. The method according to claim 1, wherein dissolution of said tablet is independent of pH. 6. The method according to claim 5, wherein dissolution of said tablet is independent of pH over a pH range of about 4 to 8. 7. The method according to claim 1, wherein said tablet has a volume of from about 0.5 to about 10.0 microliters. 8. The method according to claim 1, wherein said tablet has a volume of from about 1.0 to about 25 microliters. 9. The method according to claim 1, wherein said tablet has a volume of from about 3.0 to about 15.0 microliters. 10. The method according to claim 1, wherein said tablet comprises 10 micrograms of sufentanil, expressed as the base. 11. The method according to claim 1, wherein said tablet comprises 15 micrograms of sufentanil, expressed as the base. 12. The method according to claim 1, wherein said tablet has a thickness of from 0.5 to 3.0 mm. 13. The method according to claim 1, wherein said tablet disintegrates over a period of 10-30 minutes following sublingual administration to said subject. 14. The method according to claim 1, wherein a single or repeated oral transmucosal administration to a subject results in a bioavailability of greater than 70%. 15. The method according to claim 1, wherein following administration, said tablet adheres to the oral mucosa of said subject throughout the period of drug delivery. 16. The method according to claim 1, wherein said tablet exhibits an attachment force of from 0.03 to 0.18 N/cm2 to a porcine mucosa substrate in vitro. 17. The method according to claim 1, wherein the amount of the drug in said tablet absorbed via the oral mucosa is selected from the group consisting of at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 98% and at least 99% of the drug in said bioadhesive tablet. 18. The method according to claim 17, wherein at least 55% of the total amount of drug in said formulation is absorbed via the oral transmucosal route. 19. The method according to claim 17, wherein at least 60% of the total amount of drug in said formulation is absorbed via the oral transmucosal route. 20. The method according to claim 1, wherein said tablet is administered using a single dose applicator (SDA). 21. The method according to claim 20, wherein said SDA is effective to accurately place said tablet in the sublingual space. 22. The method according to claim 21, wherein said tablet remains dry in said SDA prior to dispensing, at which point a single tablet is dispensed from the SDA into the mouth of said subject. 23. The method according to claim 1, wherein said tablet is administered using a drug dispensing device, wherein said drug dispensing device is effective to check user identification and provide a lockout period between dose dispenses. 24. The method according to claim 23, wherein said drug dispensing device is effective to accurately place said tablet in the sublingual area. 25. The method according to claim 24, wherein said tablet remains dry in the drug dispensing device prior to dispensing, at which point a single tablet is dispensed from the drug dispensing device into the mouth of said subject. 26. The method according to claim 24, wherein said drug dispensing device further comprises a user interface wherein dosage history can be transferred to another device, computer or network.
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