Patent ID: 6436709
Filing Date: 2002-08-20
Classification: C12M,C12N

Abstract:
A low pressure-accelerated particle gene gun, comprising:a gas source to provide a gas; a gas pipe with a first end of the gas pipe connected to the gas source and a second end of the gas pipe connected to a valve, wherein an opening and an closing of the valve is controlled by a control device to control a delivery of the gas; a gene gun apparatus, the gene gun apparatus comprises at least: a handle structure connected a triggering device, wherein the triggering device is connected to the control device; a pressurized chamber connected to the handle structure, wherein the pressurized chamber comprises a front-side and a back-side; a sprayer, the sprayer includes a spray nozzle and a spray tube, and the spray nozzle comprises a front part and a back part, the front part of the spray nozzle is connected to the spray tube and the back part of the spray nozzle is connected to the back-side of the pressurized chamber, the spray nozzle comprises an interior contour, wherein the interior contour of the spray nozzle comprises a diverging part and a converging part; a connector, a first end of the connector is connected to the front-side of the pressurized chamber and a second end of the connector is connected to the valve, wherein the gas is flow from the valve to enter into the pressurized chamber; and a material delivery system connected to a top part of the pressurized chamber, wherein the material delivery system comprises at least a feeding tube sealer; a feeding tube, a clutch, and a feeding tube sleeve, the feeding tube sleeve is firmly attached to the pressurized chamber with the clutch connected to a top of the feeding tube sleeve, the feeding tube is placed in a center open space of the feeding tube sleeve and the clutch and the feeding tube comprises a particle loading station wherein micro-particles are placed, and a feeding tube sealer is placed in the center open space of the feeding tube to seal the feeding tube, wherein the control device is connected to the clutch to control an initiation of the clutch to release the micro-particles, allowing the micro-particles to be carried away by a high speed gas flow in the pressurized chamber and sprayed from the sprayer.