Patent ID: 7892836

Claim:
A capillary gun for delivery of ballistic particles into a target, the gun comprising: a flow tube connected to a gas source for directing a carrier gas stream along a flow axis, wherein the carrier gas stream has a flow rate for accelerating the particles to a delivery velocity; a capillary tube having an inner diameter, an outer diameter, and a tube axis coaxial with the flow axis for receiving the particles and carrier gas from the flow tube and directing the particles and carrier gas toward the target, the capillary tube having an outlet end; a plurality of particle injectors connected to at least one of the flow tube and the capillary tube for introducing particles into the carrier gas stream to be carried through the capillary tube along the flow axis, wherein each particle injector of the plurality is adapted to inject a different particle type; a suction channel disposed near the outlet end of the capillary tube for-diverting the carrier gas from the flow axis so that the particles continue along the flow axis at the delivery velocity to impinge upon the target located at a distance from the outlet end of the capillary tube; and a vacuum source for applying the suction to the vacuum channel.