Patent ID: 6817988
Filing Date: 2004-11-16
Classification: A61M

Abstract:
A handheld injection device comprising:an open cavity having a rim, the rim being capable of forming an airtight seal when applied to the skin of a patient; a first piston in communication with the open cavity, for creating suction therein; a needle projecting into the open cavity, but not projecting beyond the rim; a second piston for containing a product to be injected, the second piston being in communication with the needle; wherein withdrawal of the first piston creates suction in the open cavity, causing the patient's skin to be sucked into the cavity and to be pierced by the needle, and actuation of the second piston causes the product to be injected; wherein the first and second pistons are located within a cylindrical body, the cylindrical body having the needle at one end and actuating means for the pistons at another end.