Diffusional implantable delivery system
First Claim
Patent Images
1. A sustained release diffusional delivery system comprising:
- a beneficial agent;
a reservoir that encloses said beneficial agent, an entirety of said reservoir that encloses said beneficial agent being impermeable and non-porous to fluids external of said reservoir during delivery of the beneficial agent; and
a capillary channel in communication with said reservoir and the exterior of the system for delivering said beneficial agent from the system;
said capillary channel having a cross-sectional area and a length selected to provide a predetermined delivery rate of said beneficial agent.
1 Assignment
0 Petitions
Accused Products
Abstract
A sustained release delivery system for delivering a beneficial agent is provided. The system includes a reservoir comprising the beneficial agent and a capillary channel in communication with the reservoir and the exterior of the system for delivering the beneficial agent from the system. The capillary channel has a cross-sectional area and a length selected to deliver the beneficial agent at a predetermined rate. The system may further include an outer surface that is impermeable and non-porous during delivery of the beneficial agent. The beneficial agent may be formulated in a glassy sugar matrix.
222 Citations
31 Claims
-
1. A sustained release diffusional delivery system comprising:
-
a beneficial agent; a reservoir that encloses said beneficial agent, an entirety of said reservoir that encloses said beneficial agent being impermeable and non-porous to fluids external of said reservoir during delivery of the beneficial agent; and a capillary channel in communication with said reservoir and the exterior of the system for delivering said beneficial agent from the system; said capillary channel having a cross-sectional area and a length selected to provide a predetermined delivery rate of said beneficial agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A sustained release delivery system for delivering a beneficial agent formulated in a glassy sugar matrix at a predetermined rate, comprising:
-
(a) a reservoir comprising said beneficial agent formulated in a glassy sugar matrix; and (b) a capillary channel in communication with said reservoir and the exterior of the system for delivering said beneficial agent from the system, said capillary channel having a cross-sectional area and a length selected to provide said predetermined rate. - View Dependent Claims (22, 23, 24, 29)
-
-
25. A method of delivering a beneficial agent at a predetermined rate, said method comprising positioning a sustained release diffusional delivery system at a location in need of such beneficial agent, said sustained release diffusional delivery system comprising:
-
(a) a reservoir that encloses said beneficial agent, an entirety of said reservoir that encloses said beneficial agent being impermeable and non-porous to fluids external of said reservoir during delivery of the beneficial agent; and (b) a capillary channel in communication with said reservoir and the exterior of the system for delivering said beneficial agent from the system; said capillary channel having a cross-sectional area and a length selected to provide said predetermined rate.
-
-
26. A method of delivering a beneficial agent formulated in a glassy sugar matrix at a predetermined rate, said method comprising positioning a sustained release delivery system at a location in need of the beneficial agent formulated in a glassy sugar matrix, said sustained release delivery system comprising:
-
(a) a reservoir comprising said beneficial agent; and (b) a capillary channel in communication with said reservoir and the exterior of the system for delivering said beneficial agent from the system, said capillary channel having a cross-sectional area and a length selected to provide said predetermined rate. - View Dependent Claims (30)
-
-
27. A method of preparing a sustained release delivery system for delivering a beneficial agent at a predetermined rate, said method comprising the steps of:
-
(a) providing a reservoir that encloses the beneficial agent, an entirety of said reservoir that encloses said beneficial agent being impermeable and non-porous to fluids external of said reservoir during delivery of the beneficial agent; (b) filling said reservoir with the beneficial agent; and (c) providing the reservoir with a diffusion controller, said diffusion controller comprising a capillary channel having a cross-sectional area and a length selected to provide said predetermined rate.
-
-
28. A method of preparing a sustained release delivery system for delivering a beneficial agent formulated in a glassy sugar matrix at a predetermined rate, said method comprising the steps of:
-
(a) providing a reservoir; (b) providing a beneficial agent formulated in a glassy sugar matrix in said reservoir; and (c) providing the reservoir with a diffusion controller, said diffusion controller comprising a capillary channel having a cross-sectional area and a length selected to provide said predetermined rate. - View Dependent Claims (31)
-
Specification