Patent ID: 8323881

Claim:
A system for injecting cells into a biological tissue segment comprising an injection needle in fluid communication with a device for conveying a cell suspension to said needle from the source thereof; a means for generating microvibration in said needle; a support member for holding said tissue on a first flat face thereof, said support member being a part of a housing defining a chamber in the interior thereof and defining a plurality of perforations extending through said first flat face, said needle extending centrally through said support member and said chamber; a means for creating negative and positive pressures within said chamber; a means for advancing and retracting said needle a predetermined distance across the first flat face of said support member; a means for infusing a predetermined volume of said cell suspension into said tissue through said needle when the distal end thereof extends said predetermined distance beyond said first flat face; a means for positioning and repositioning said needle carried on said support member, when the needle is retracted, to a series of points on the tissue according to their X and Y coordinates.