Osmotic device with high drug loading and delayed activation of drug delivery
First Claim
1. A fluid-imbibing delivery device for dispensing essentially all of an active agent formulation to a fluid environment of use after an initial, preset delay of startup of delivery, the device comprising:
- (a) a first and a second housing, the first and second housings having an open end and a closed end, the first and second housings being releasably joined adjacent their open ends, the second housing being semipermeable;
(b) an active agent formulation comprising at least one active agent within said first housing; and
(c) means associated with said first and second housings for separating said first and second housings after an initial time period;
wherein the device is dimensioned such that the ratio of the height to the long axis is less than one.
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Accused Products
Abstract
The present invention is directed to a fluid-imbibing drug delivery device which is useful for the initial delayed delivery of an active agent formulation to a fluid environment of use, the initial delay period to startup or activation being of a predetermined length of time. The dispensing device is formed of a first and second housing that are in reversibly sliding telescoping arrangement with each other. The first housing contains the active agent formulation and has an aspect ratio less than 1. The housings are preferably. ovoloid in shape.
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Citations
19 Claims
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1. A fluid-imbibing delivery device for dispensing essentially all of an active agent formulation to a fluid environment of use after an initial, preset delay of startup of delivery, the device comprising:
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(a) a first and a second housing, the first and second housings having an open end and a closed end, the first and second housings being releasably joined adjacent their open ends, the second housing being semipermeable; (b) an active agent formulation comprising at least one active agent within said first housing; and (c) means associated with said first and second housings for separating said first and second housings after an initial time period; wherein the device is dimensioned such that the ratio of the height to the long axis is less than one. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for delivering essentially all of an active agent formulation contained in a delivery device to a fluid environment after an initial preset delay of startup of delivery, said method comprising:
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(a) placing a fluid-imbibing delivery device into the fluid environment, said device comprising; (i) a first housing and a second housing, the first and second housings having an open end and a closed end, the first and second housings being releasably joined adjacent their open ends, the second housing being semipermeable; (ii) an active agent formulation comprising at least one active agent within said first housing; (iii) means associated with said first and second housings for separating said first and second housings after an initial time period; wherein the device is dimensioned such that the ratio of the height to the long axis is less than one; (b) allowing fluid to be imbibed through at least a portion of the second housing thereby separating said first and second housings to expose the active agent formulation to the fluid environment; and (c) allowing for delivery of essentially all of the active agent formulation to the fluid environment of use.
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Specification