NEEDLE-FREE INJECTION DEVICES, SYSTEMS AND METHODS

摘要

An improved needle-free device for injecting or aspirating fluids using manually or mechanically generated injection is disclosed. Also disclosed are systems and methods for using the device, including systems having fluid reservoirs and simple negative pressure mechanisms as well as methods for using them. The devices, systems and methods disclosed herein are easy to fabricate and can deliver variable doses in a simple, effective, patient-friendly, cost-effective and disposable manner.

主权项

1. A needle-free injection or aspiration device comprising:
a support member comprising a first opening for a reservoir; a channel member comprising a first input port and an injection port, wherein the first input port is fluidly connected to the support member and the injection port comprises a small protrusion effective to provide injection or aspiration; a contact member surrounding at least one portion of the channel member, wherein the contact member is positioned between the support member and the injection port; and an empty space underlying the contact member, wherein the size, shape or dimensions of the contact member are effective to define the underlying empty space.