Ingestible device for delivery of therapeutic agent to the gastrointestinal tract
Ingestible devices can directly deliver therapeutic agents to desired tissue(s) of the GI tract of a subject, such as the submucosa, the mucosa, and/or the mucus layer of the GI tract, and methods of using the same. The ingestible devices can deliver therapeutic agents in a safe, effective, and reliable manner. The disclosure also provides pharmaceutical compositions for use in methods of treating a disease or condition in a subject in need thereof.
1. An ingestible device comprising:
a housing comprising an interior and an opening;
a gas cylinder in the interior of the housing, the gas cylinder having a breakable seal;
a spring in the interior of the housing;
a piston in the interior of the housing;
a piercer in the interior of the housing;
a retainer; and
a trigger exposed to an environment external to the housing, wherein, in a first state of the ingestible device:
the trigger holds the retainer in a first position; the retainer holds the piercer in a first position in which the piercer does not break the breakable seal of the gas cylinder; and the interior of the ingestible device is configured to contain a dispensable substance without the dispensable substance being delivered from the ingestible device via the opening in the housing, and
wherein, in a second state of the ingestible device:
the trigger is at least partially dissolved, degraded and/or eroded so that the trigger is unable to hold the retainer in its first position; the retainer is unable to hold the piercer in its first position; the spring applies a force to the piercer to move the piercer so that the piercer breaks the breakable seal of the gas cylinder; a gas is released from the gas cylinder; the gas applies a force to the piston so that the piston applies a force to the dispensable substance; and the dispensable substance is delivered out of the ingestible device via the opening in the housing.
2. The ingestible device of claim 1 , further comprising a seal between the piston and the housing.
3. The ingestible device of claim 1 , further comprising a seal between the piercer and the housing.
4. The ingestible device of claim 1 , wherein the ingestible device is a 00 sized device.
5. The ingestible device of claim 1 , wherein the trigger comprises an enteric material.
6. The ingestible device of claim 1 , wherein:
the housing comprises first and second housing parts;
the piston and the dispensable substance are inside the first housing part; and
the spring and the retainer are inside the second housing part.
7. The ingestible device of claim 1 , wherein the opening is a nozzle having a diameter of from about 325 μm to 375 μm.
8. The ingestible device of claim 1 , wherein at least one of the following holds: the ingestible device is configured for trans-epithelial delivery of a dispensable subject to the GI tract of a subject;
the ingestible device is configured for epithelial delivery of the dispensable subject to the GI tract of a subject; and
the ingestible device is configured for topical delivery of the dispensable subject to the GI tract of a subject.
9. The ingestible device of claim 1 , wherein the dispensable substance comprises a solution or a suspension.
10. The ingestible device of claim 1 , wherein at least one of the following holds: the ingestible device is configured to deliver the dispensable substance to tissue of the GI tract of a subject as a jet with a peak jet power of from about one Watt to about three Watts;
the ingestible device is configured to deliver the dispensable substance at a peak jet velocity of from about 25 meters per second to about 45 meters per second;
the ingestible device is configured to deliver the dispensable substance to tissue of the GI tract of a subject at a peak jet pressure of from about 100 psig to about 250 psig;
the ingestible device is configured to deliver the dispensable substance to tissue of the GI tract of a subject at a peak jet force of from about 0.09 N to about 0.15 N;
the ingestible device is configured to deliver the dispensable substance as a jet having jet stable length of at least about 0.5 millimeter;
the ingestible device is configured to provide an internal pressure of from about 225 psig to about 425 psig; and
the ingestible device is configured to contain the dispensable substance at a peak fluid pressure of from about 200 psig to about 400 psig.
11. The ingestible device of claim 1 , further comprising an element having a first state in which the element at least partially covers the opening in the housing and a second state in which the element does not cover the opening in the housing, wherein the ingestible device is configured so that, when the piston moves, the element moves from its first state to its second state.
12. The ingestible device of claim 1 , further comprising a covering over the opening in the housing.
13. The ingestible device of claim 12 , wherein the covering is configured to be removed from the housing due to pressure applied by the dispensable substance.
14. The ingestible device of claim 12 , wherein the covering comprises an enteric material.
15. The ingestible device of claim 12 , wherein the covering comprises a member selected from the group consisting of a film, a foil, a band, a plug, and a patch.
16. The ingestible device of claim 12 , wherein the covering has a burst pressure of at most 420 psig.
17. The ingestible device of claim 1 , further comprising a second piston configured so that, when the first piston applies the force on the dispensable substance, the dispensable substance applies a force on the second piston to slide the second piston to expose the openings and the dispensable substance is forced out of the ingestible device via the openings.
18. The ingestible device of claim 1 , further comprising a removable cap affixed to the ingestible device and configured so that, when the piston moves to apply the force on the dispensable substance, the dispensable substance applies a force on the cap to slide the cap to expose the opening in the housing.
19. The ingestible device of claim 1 , further comprising an inflated membrane volume covering the opening and configured so that, when the piston moves to apply force on the dispensable substance, the dispensable substance applies force on the inflated membrane volume and the inflated membrane volume is compressed to expose the opening in the housing.