IMPLANTABLE-GLUCOSE RESPONSIVE INSULIN DELIVERY DEVICE
First Claim
1. A biocompatible insulin delivery device comprising a reservoir for insulin, a glucose-responsive plug that seals the reservoir, and optionally comprising a protective microporous membrane covering the exposed surface of the glucose-responsive plug and further sealing the reservoir, wherein the plug comprises a polymeric matrix having an inorganic component and a stimulus-responsive component adapted to alter the porosity of the plug in response to a stimulus and wherein the plug functions to release insulin from the reservoir in response to a hyperglycemic glucose concentration and to prevent insulin release from the reservoir in response to a hypoglycemic glucose concentration.
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Abstract
A biocompatible insulin delivery device is provided comprising an insulin reservoir sealed with a glucose-responsive plug or membrane. The plug functions to release insulin from the reservoir in response to a hyperglycemic glucose concentration and to prevent insulin release from the reservoir in response to hypoglycemic glucose concentration. In one embodiment, the plug is made of a biocompatible polymeric matrix comprising an inorganic component, a stimulus-responsive component and a catalytic component.
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Citations
20 Claims
- 1. A biocompatible insulin delivery device comprising a reservoir for insulin, a glucose-responsive plug that seals the reservoir, and optionally comprising a protective microporous membrane covering the exposed surface of the glucose-responsive plug and further sealing the reservoir, wherein the plug comprises a polymeric matrix having an inorganic component and a stimulus-responsive component adapted to alter the porosity of the plug in response to a stimulus and wherein the plug functions to release insulin from the reservoir in response to a hyperglycemic glucose concentration and to prevent insulin release from the reservoir in response to a hypoglycemic glucose concentration.
- 18. A biocompatible glucose responsive membrane comprises a polymeric matrix having an inorganic component and a stimuli-responsive component adapted to alter the porosity of the matrix in response to a change in glucose concentration.
Specification