Patent ID: 8142391
Filing Date: 2012-03-27
Classification: A61M,B05B

Abstract:
1. A method of injecting a fluid agent into tissue, which comprises: delivering said fluid agent to a capillary in fluid communication with a nozzle, said nozzle having a converging section, a throat region downstream of said converging section, and a diverging section downstream of said throat region, with said capillary fluid communication comprising fluid communication with said nozzle converging section; pressurizing said delivered fluid agent to a level effective for pressure atomizing said pressurized fluid agent into fluid particles as said pressurized fluid agent passes through said nozzle, and for two phase flow in said delivered fluid agent to occur at said throat region; applying a high voltage potential between a first electrode disposed adjacent to said fluid agent passing through said nozzle converging section, and a second electrode disposed downstream of said first electrode and electrically isolated from said first electrode to create a non-uniform electric field that electrostatically spray charges said fluid agent; and directing said charged particles towards said tissue resulting in said charged particles impinging and penetrating said tissue.