Volume sensing in fluidic cartridge
First Claim
1. A fluidic device comprising:
- a disposable cartridge including a fluid channel configured to receive a fluid flow;
an instrument configured to receive the disposable cartridge, the instrument including at least one sensor having a plurality of fluid sensing zones spaced along the fluid channel when the disposable cartridge is received by the instrument, each fluid sensing zone configured to determine a presence or absence of fluid at a respective portion of the fluid channel; and
a control unit configured to (i) receive a signal indicative of the presence or absence of the fluid at each of the fluid sensing zones, and (ii) determine a volume of a fluid plug or a volume ratio of gas bubbles in a fluid based on the presence or absence of the fluid at each of the fluid sensing zones.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatuses for measuring parameters based on the presence or absence of fluid at a plurality of fluid sensing zones in a disposable cassette are described herein. In an embodiment, a fluidic device includes a disposable cartridge including a fluid channel, an instrument configured to receive the disposable cartridge, the instrument including at least one sensor having a plurality of fluid sensing zones spaced along the fluid channel when the disposable cartridge is received by the disposable cartridge, each fluid sensing zone configured to determine a presence or absence of fluid at a respective portion of the fluid channel, and a control unit configured to determine at least one of a fluid volume, a volume displacement, a flow rate, a flow velocity or a volume ratio of gas bubbles of the fluid based on the presence or absence of the fluid at each of the fluid sensing zones.
89 Citations
27 Claims
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1. A fluidic device comprising:
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a disposable cartridge including a fluid channel configured to receive a fluid flow; an instrument configured to receive the disposable cartridge, the instrument including at least one sensor having a plurality of fluid sensing zones spaced along the fluid channel when the disposable cartridge is received by the instrument, each fluid sensing zone configured to determine a presence or absence of fluid at a respective portion of the fluid channel; and a control unit configured to (i) receive a signal indicative of the presence or absence of the fluid at each of the fluid sensing zones, and (ii) determine a volume of a fluid plug or a volume ratio of gas bubbles in a fluid based on the presence or absence of the fluid at each of the fluid sensing zones. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A fluidic device comprising:
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a disposable cartridge including a fluid channel configured to receive a fluid flow; an instrument configured to receive the disposable cartridge, the instrument including at least one sensor having a plurality of fluid sensing zones spaced along a length of the fluid channel when the disposable cartridge is received by the instrument, each sensor including a light emitter and a light receiver; and a control unit configured to determine a volume displacement of a fluid flow or a volume of a fluid plug in the fluid channel based on a changed level of light transmission in a first sensing zone and a changed level of light transmission in a second sensing zone, wherein the level of light transmission is changed by the amount of light scattered with presence or absence of fluid in the fluid sensing zone. - View Dependent Claims (8, 9, 10, 23, 24, 25, 26, 27)
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11. A method of configuring a disposable cartridge comprising:
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designing a disposable cartridge to have a fluid channel configured to receive a particular fluid sample; configuring the fluid channel to align with a plurality of fluid sensing zones corresponding to at least one light emitter and at least one light receiver of a reader instrument when the disposable cartridge is received in the instrument for measurements; and determining a fluid volume displacement, a volume of a fluid plug or a volume ratio of gas bubbles in a fluid based on the presence or absence of the fluid at each of the fluid sensing zones. - View Dependent Claims (12, 13, 14, 15)
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16. A fluidic device comprising:
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a disposable cartridge including a fluid channel configured to receive a fluid flow; an instrument configured to receive the disposable cartridge, the instrument including at least one sensor having a plurality of fluid sensing zones spaced along the fluid channel when the disposable cartridge is received by the instrument, each sensor comprising a light emitter, a light receiver and a plurality of light masking apertures defining multiple fluid sensing zones; and a control unit configured to (i) receive a signal indicative of the presence or absence of the fluid at each of the fluid sensing zones, wherein the signal indicates the level of the light transmitted from the respective light emitter to the respective light receiver at the fluid sensing zones, and (ii) analyze the received signal to determine a volume of a fluid plug or a volume ratio of gas bubbles in a fluid based on a presence or absence of the fluid at each of the fluid sensing zones. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification