Microneedle drug delivery device
First Claim
1. A method for delivering an agent into a biological barrier, comprising providing a device having:
- a plurality of hollow microneedles having a base end and a tip, with at least one hollow pathway disposed between the base end and the tip,a substrate to which the base ends of the microneedles are attached, andat least one reservoir containing the agent to be delivered and being in fluidic connection with the base ends of at least one of the microneedles,selectively altering the volume of the reservoir, andinserting at least one of the microneedles into the biological barrier to deliver an agent through the microneedles and into the biological barrier.
2 Assignments
0 Petitions
Accused Products
Abstract
Simple microneedle devices for delivery of drugs across or into biological tissue are provided, which permit drug delivery at clinically relevant rates across or into skin or other tissue barriers, with minimal or no damage, pain, or irritation to the tissue. The devices include a substrate to which a plurality of hollow microneedles are attached or integrated, and at least one reservoir, containing the drug, selectably in communication with the microneedles, wherein the volume or amount of drug to be delivered can be selectively altered. The reservoir can be formed of a deformable, preferably elastic, material. The device typically includes a means, such as a plunger, for compressing the reservoir to drive the drug from the reservoir through the microneedles. In one embodiment, the reservoir is a syringe or pump connected to the substrate.
318 Citations
18 Claims
-
1. A method for delivering an agent into a biological barrier, comprising providing a device having:
-
a plurality of hollow microneedles having a base end and a tip, with at least one hollow pathway disposed between the base end and the tip, a substrate to which the base ends of the microneedles are attached, and at least one reservoir containing the agent to be delivered and being in fluidic connection with the base ends of at least one of the microneedles, selectively altering the volume of the reservoir, and inserting at least one of the microneedles into the biological barrier to deliver an agent through the microneedles and into the biological barrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification