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1. US20130337022 - Pharmaceutical dosage form

Office United States of America
Application Number 13988959
Application Date 28.11.2011
Publication Number 20130337022
Publication Date 19.12.2013
Grant Number 09808418
Grant Date 07.11.2017
Publication Kind B2
IPC
A61K 9/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
A61K 9/52
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
48Preparations in capsules, e.g. of gelatin, of chocolate
52Sustained or differential release type
CPC
A61K 9/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
A61K 9/006
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
0012Galenical forms characterised by the site of application
0053Mouth and digestive tract, i.e. intraoral and peroral administration
006Oral mucosa, e.g. mucoadhesive forms, sublingual droplets; Buccal patches or films; Buccal sprays
A61K 9/0065
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
0012Galenical forms characterised by the site of application
0053Mouth and digestive tract, i.e. intraoral and peroral administration
0065Forms with gastric retention, e.g. floating on gastric juice, adhering to gastric mucosa, expanding to prevent passage through the pylorus
Applicants Viness Pillay
UNIVERSITY OF THE WITWATERSRAND, JOHANNESBURG
Rubina Perveen Shaikh
Yahya Essop Choonara
Lisa Claire Du Toit
Inventors Viness Pillay
Rubina Perveen Shaikh
Yahya Essop Choonara
Lisa Claire Du Toit
Agents Birch, Stewart, Kolasch & Birch, LLP
Priority Data 2010/03740 26.11.2010 ZA
Title
(EN) Pharmaceutical dosage form
Abstract
(EN)

A pH responsive and mucoadhesive pharmaceutical dosage form for the release of a pharmaceutically active agent is described. The dosage form includes a mucoadhesive layer for site-specific mucoadhesion, a water-insoluble outer layer, and an intermediate layer including one or more pharmaceutically active agents for site-specific delivery. The different membranous layers perform different functions in order to create a drug delivery system which is able to deliver a drug to a specific site, for a particular period of time and with a specific drug release pattern. The dosage form can have two or more intermediate layers, each layer comprising an active agent. The mucoadhesive layer can also include an active agents. The dosage form is preferably an oral or buccal delivery form for release of the active agent into the gastro intestinal tract. The intermediate layer can be an electrospun fibrous membrane layer containing the active agent.