Oral drug delivery system
First Claim
1. An oral delivery system, which comprises:
- a sachet at least partially formed from at least one microporous or permeable membrane, and defining a cavity;
a physiologically active substance dissolved or dispersed in a liquid or gel, within the cavity, the microporous or permeable membrane being in contact with the liquid or gel and being permeable to the physiologically active substance in the liquid or gel; and
an encapsulating layer surrounding the sachet;
characterized in that either;
a) the membrane is hydrophilic and the contents or the sachet are hydrophobic;
or b) the membrane is hydrophobic and the contents of the sachet are hydrophilic;
whereby, in use, the encapsulating layer is first dissolved in the gastro-intestinal tract (GIT) na d thereafter passage of the physiologically active substance into the GIT through the membrane is rate-controlled.
2 Assignments
0 Petitions
Accused Products
Abstract
There is disclosed an oral delivery system, which comprises: a sachet at least partially formed from at least one microporous permeable membrane, and defining a cavity; a physiologically active substance dissolved or dispersed in a liquid or gel, within the cavity, the microporous or permeable membrane being in contact with the liquid or gel and being permeable to the physiologically active substance in the liquid or gel; and an encapsulating layer surrounding the sachet; characterised in that either: a) the membrane is hydrophilic and the contents of the sachet are hydrophobic; or b) the membrane is hydrophobic and the contents of the sachet are hydrophilic; whereby, in use, the encapsulating layer is first dissolved in the gastro-intestinal tract (GIT) and thereafter passage of the physiologically active substance into the GIT through the membrane is rate-controlled. A method of manufacturing the oral delivery system is also disclosed.
7 Citations
7 Claims
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1. An oral delivery system, which comprises:
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a sachet at least partially formed from at least one microporous or permeable membrane, and defining a cavity;
a physiologically active substance dissolved or dispersed in a liquid or gel, within the cavity, the microporous or permeable membrane being in contact with the liquid or gel and being permeable to the physiologically active substance in the liquid or gel; and
an encapsulating layer surrounding the sachet;
characterized in that either;
a) the membrane is hydrophilic and the contents or the sachet are hydrophobic;
orb) the membrane is hydrophobic and the contents of the sachet are hydrophilic;
whereby, in use, the encapsulating layer is first dissolved in the gastro-intestinal tract (GIT) na d thereafter passage of the physiologically active substance into the GIT through the membrane is rate-controlled. - View Dependent Claims (2, 3, 4, 5, 6)
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7-8. -8. (canceled)
Specification