FLUID DISPENSING SYSTEM

摘要

An apparatus including a fluid reservoir and a compressible metering chamber including a first end coupled to the fluid reservoir and a second end. The apparatus further including a valve coupled to the second end of the metering chamber and a nozzle coupled to the valve. A system including linearly translatable cartridge mounting assembly having a plurality of fluid dispensing cartridge mounting stations and a plurality of fluid dispensing cartridges mounted to respective fluid dispensing cartridge mounting stations. The system further including a plurality of compression assemblies coupled to respective fluid dispensing cartridges and a receiving assembly positioned beneath the mounting assembly. A method includes positioning a fluid dispensing cartridge comprising a fluid reservoir and a metering chamber over a sample retaining member, applying a compressive force to the metering chamber to eject a predetermined amount of fluid and removing the compressive force to refill the metering chamber.

主权项

1. An apparatus comprising:
a fluid reservoir; a compressible metering chamber comprising a first end coupled to the fluid reservoir and a second end; a valve coupled to the second end of the metering chamber, the valve having a deformable base member and a deformable skirt member positioned around the deformable base member; and a nozzle coupled to the valve, the nozzle having a reservoir within which the valve is positioned, wherein the reservoir defines an annular chamber and the deformable skirt member forms a seal with an outer side of the annular chamber when the deformable base member is in an open position and a seal with an inner side of the annular chamber when the deformable base member is in a closed position.