Pipette core member, pipette, and pipette device
First Claim
Patent Images
1. A pipette device comprising:
- a pipette comprising;
a pipette body; and
a pipette core member retained inside the pipette body, the pipette core member comprising;
a pump body comprising;
an electroosmotic flow pump having a first suction/discharge port and a second suction/discharge port, wherein the electroosmotic flow pump further comprises a first electrode, a second electrode, and an electroosmotic material sandwiched between the first electrode and the second electrode; and
a reservoir integrally formed with the electroosmotic flow pump, and configured to store a driving liquid and in liquid communication with the first suction/discharge port of the electroosmotic flow pump; and
a capillary secured to the pump body and connected to the electroosmotic flow pump, wherein the capillary also communicates with the second suction/discharge port of the electroosmotic flow pump;
a controller having a setting device that sets a voltage value of a control signal output that is used for retaining a sample in a tip end of the capillary of the pipette, wherein the setting device comprises;
a switch device that switches polarity of the voltage value of the control signal output applied to the electroosmotic flow pump; and
a multiplying factor setting device configured to multiply the voltage value by a predetermined multiplying factor; and
a control signal line that electronically connects the electroosmotic flow pump and the controller and transmits the control signal output from the controller to the electroosmotic flow pump.
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Abstract
A pipette core member is used in a pipette for sampling a sample. This pipette core member includes: a pump body including a reservoir communicated with one suction/discharge port of an electroosmotic flow pump, the electroosmotic flow pump and the reservoir being integrally formed; and a capillary connected to the electroosmotic flow pump and communicated with the other suction/discharge port of the electroosmotic flow pump. The capillary is secured to the pump body.
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Citations
7 Claims
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1. A pipette device comprising:
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a pipette comprising; a pipette body; and a pipette core member retained inside the pipette body, the pipette core member comprising; a pump body comprising; an electroosmotic flow pump having a first suction/discharge port and a second suction/discharge port, wherein the electroosmotic flow pump further comprises a first electrode, a second electrode, and an electroosmotic material sandwiched between the first electrode and the second electrode; and a reservoir integrally formed with the electroosmotic flow pump, and configured to store a driving liquid and in liquid communication with the first suction/discharge port of the electroosmotic flow pump; and a capillary secured to the pump body and connected to the electroosmotic flow pump, wherein the capillary also communicates with the second suction/discharge port of the electroosmotic flow pump; a controller having a setting device that sets a voltage value of a control signal output that is used for retaining a sample in a tip end of the capillary of the pipette, wherein the setting device comprises; a switch device that switches polarity of the voltage value of the control signal output applied to the electroosmotic flow pump; and a multiplying factor setting device configured to multiply the voltage value by a predetermined multiplying factor; and a control signal line that electronically connects the electroosmotic flow pump and the controller and transmits the control signal output from the controller to the electroosmotic flow pump. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification