Patent ID: 11883620
Assignee: nan
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 19:
20. A system comprising an implantable device comprising:
A. a casing that is substantially tubular and has at least a first end and a second end opposite to the first end,
B. a semi-permeable membrane plug at or near the first end,
C. a first chamber, wherein one wall of the first chamber comprises the semi-permeable plug,
D. a second chamber comprising a drug,
E. a third chamber near the second end,
F. a piston separating the first chamber and the second chamber,
G. an opening for release of the drug from the implantable device into a body of a human or an animal,
H. an energy source that produces electricity,
G. a magnet;
wherein:
a. the implantable device is configured to be implanted within the body of the human or the animal during delivery of the drug into the body of the human or the animal,
b. the first chamber is between the semi-permeable membrane plug and the piston,
c. as liquid is drawn into the first chamber through the semi-permeable membrane plug, the implantable device is configured to build an osmotic pressure and push the piston,
d. the second chamber is between the first chamber and the third chamber; and
e. the implantable device is configured to produce a desired flow rate of elution of the drug from the implantable device by delivering the drug through the opening,
f. the implantable device is configured to provide the drug at a constant concentration for a certain amount of time, followed by no drug release for some time, and subsequently followed by providing the drug at the constant concentration; and
g. the implantable device is configured to lessen or stop the drug release by the magnet.