Microneedle-Based Pen Device For Drug Delivery And Method For Using Same

摘要

A system and method is provided for an injectable substance delivery pen comprising a microneedle hub assembly removably engaged with a pen device body which includes a cartridge, a plunger, and a drive mechanism. The hub assembly includes at least one microneedle for intradermal or shallow subcutaneous injection of the contents of the cartridge. The cartridge, plunger and drive mechanism components of the pen body are fabricated of non-compliant and non-compressible materials to allow effective communication of the cartridge contents via the microneedle patient interface.

主权项

1. An injection mechanism for injecting fluid into a targeted tissue layer comprising:
a primary reservoir for storing fluid prior to injection having a first axis; and a secondary reservoir for holding the amount of fluid to he injected haying a second axis, wherein the secondary reservoir is located co-axially and in series with the primary reservoir and has a smaller cross-sectional area than the cross-sectional area of the primary reservoir.