Fluid dispenser
First Claim
1. A reagent dispense device comprising,a reagent reservoir in fluid communication with a deformable dispense tube,the deformable dispense tube being at least partially compressible, in use, between a hammer and an anvil, so as to dispense a volume of reagent from the tube,wherein, in use, the reservoir defines an enclosed gas space above the reagent, and the device including a gas vent for, in use, admitting gas to the gas space in response to a dispense of reagent from the tube,the passage of gas into the gas space serving to control the reservoir pressure as the reservoir is depleted by subsequent dispensing of reagent;
- wherein the reservoir defines multiple chambers which are successively drained of reagent so as to minimize the effective above the reagent.
1 Assignment
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Accused Products
Abstract
A cartridge (10) for dispensing a reagent contained in a reagent reservoir (32). The reservoir (32) is in fluid communication with a deformable dispense tube (26) that is a least partially compressible, in use, to dispense a volume of reagent from the tube (26). The reservoir (32) defines an enclosed gas space (46) above the reagent, and the cartridge (10) includes a gas vent (40) that, in use, admits gas to the gas space (46) in response to dispense of reagent from the tube (26) that serves to control the reservoir pressure as the reservoir (32) is depleted by subsequent dispensing of reagent. A dispenser employing the cartridge (10) and a method of dispensing a volume of reagent are also disclosed.
9 Citations
12 Claims
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1. A reagent dispense device comprising,
a reagent reservoir in fluid communication with a deformable dispense tube, the deformable dispense tube being at least partially compressible, in use, between a hammer and an anvil, so as to dispense a volume of reagent from the tube, wherein, in use, the reservoir defines an enclosed gas space above the reagent, and the device including a gas vent for, in use, admitting gas to the gas space in response to a dispense of reagent from the tube, the passage of gas into the gas space serving to control the reservoir pressure as the reservoir is depleted by subsequent dispensing of reagent; wherein the reservoir defines multiple chambers which are successively drained of reagent so as to minimize the effective above the reagent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12)
- 9. The device of claim wherein the device includes a shroud which partially surrounds the dispense tube so as to protect the tube from damage.
Specification