Method, sample carrier, and device for the qualitative and/or quantitative detection of particles in a fluid
First Claim
1. A device for detection of particles in a fluid, the device comprising:
- a receiver having a conduit for feeding the fluid, and a conduit for the discharge of the fluid;
a light source;
an optical sensor;
a sample carrier, arranged between the light source and the optical sensor, for receiving fluid to be examined, wherein the sample carrier is movable relative at least to the sensor and is connectable via a fluid inlet to the conduit for feeding the fluid, and via a fluid outlet to the conduit for the discharge of the fluid, and wherein the sample carrier is exchangeably arranged in the receiver, the sample carrier comprising a closed channel formed between the fluid inlet and the fluid outlet conduit connections, the closed channel, at least in sections, comprising a transparent wall on two opposite sides;
a pivotable bar arrangement for moving into a closed position fixing the sample carrier with a positive fit in a designated position in the receiver, the pivotable bar arrangement moving to an open position for withdrawal and replacement of the sample carrier with another sample carrier.
1 Assignment
0 Petitions
Accused Products
Abstract
The device serves for the qualitative and quantitative detection of particles in a fluid and includes a light source (1), an optical sensor (2) and a sample carrier (4) which is arranged therebetween and which is for receiving fluid to be examined. The sample carrier is (4) movable relative at least to the sensor (2) and is connectable via a fluid inlet (9) to a conduit (11) for feeding the fluid, and via a fluid outlet (10) to a conduit (12) for the discharge of fluid. The sample carrier (4) is exchangeably arranged in a receiver of the device, so that this sample carrier can be replaced by another one in a rapid and simple manner when the sample carrier (4) is contaminated.
12 Citations
18 Claims
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1. A device for detection of particles in a fluid, the device comprising:
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a receiver having a conduit for feeding the fluid, and a conduit for the discharge of the fluid; a light source; an optical sensor; a sample carrier, arranged between the light source and the optical sensor, for receiving fluid to be examined, wherein the sample carrier is movable relative at least to the sensor and is connectable via a fluid inlet to the conduit for feeding the fluid, and via a fluid outlet to the conduit for the discharge of the fluid, and wherein the sample carrier is exchangeably arranged in the receiver, the sample carrier comprising a closed channel formed between the fluid inlet and the fluid outlet conduit connections, the closed channel, at least in sections, comprising a transparent wall on two opposite sides; a pivotable bar arrangement for moving into a closed position fixing the sample carrier with a positive fit in a designated position in the receiver, the pivotable bar arrangement moving to an open position for withdrawal and replacement of the sample carrier with another sample carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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- 10. A sample carrier for a device for detection of particles in a fluid, the device comprising a receiver, a light source, an optical sensor and the sample carrier, arranged between the light source and the optical sensor, for receiving fluid to be examined, wherein the sample carrier is movable relative at least to the sensor and is connectable via a fluid inlet to a conduit for feeding the fluid, and via a fluid outlet to a conduit for the discharge of fluid, the fluid inlet and the fluid outlet being arranged next to one another in an insertion direction, and wherein the sample carrier is exchangeably arranged in the receiver, wherein the sample carrier comprises a carrier frame which is closed off by transparent plates, with one of the transparent plates being at each of two sides, at least one of the transparent plates being arranged in a set-back manner with respect to a peripheral frame part, at least one channel-forming rib, which forms part of the carrier frame is provided between the fluid inlet and the fluid outlet, a projection at an insertion side, the projection being arranged out-of-center and forming a positive-fit means for positioning.
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18. A method for detecting particles in a fluid with a device comprising a receiver, a light source, an optical sensor and a sample carrier arranged between the light source and the optical sensor, for receiving fluid to be examined, wherein the sample carrier is movable relative at least to the sensor and is connectable via a fluid inlet to a conduit for feeding the fluid, and via a fluid outlet to a conduit for the discharge of fluid, and wherein the sample carrier is exchangeably arranged in the receiver, wherein the sample carrier comprises a carrier frame which is closed off by transparent plates, with one of the transparent plates being at each of two sides, the method comprising the steps of:
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bringing the sample carrier into a designated position in the device; introducing the fluid to be examined into the sample carrier via the feed conduit; shutting off the discharge conduit; closing the feed conduit after the build-up of pressure within the sample carrier; allowing a dwell time to pass and effecting the optical detection of the sample; and after the optical detection, the feed and discharge conduits are opened, whereupon the fluid located in the sample carrier is replaced and the cycle is repeated beginning with the step of shutting off the discharge conduit.
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Specification