Blood analysis

a technology of blood analysis and blood, applied in the field of blood analysis, can solve the problems of cumbersome and time-consuming esr measurement, reduced test time of 15-20 minutes, and long test tim

Inactive Publication Date: 2015-02-26
FORSELL TOMMY
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  • Abstract
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  • Claims
  • Application Information

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Benefits of technology

[0007]The prior art ESR measurement is a cumbersome and time-consuming test. The improvement present in U.S. Pat. No. 6,336,358 reduces the time required for the ESR test to about one quarter. However, the reduced te

Problems solved by technology

The prior art ESR measurement is a cumbersome and time-consuming test.
Howev

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Embodiment Construction

[0031]Throughout the drawings, the same reference characters will be used for corresponding or similar elements.

[0032]The present invention generally relates to a novel device and method for determining the erythrocyte sedimentation rate (ESR) of a blood sample based on a spectrophotometric technique. This technique allows usage of much smaller blood sample volumes as compared to the prior art ESR measurements. In addition, the time from starting the measurement until the final ESR measure is available is radically reduced by the present invention. A further advantage of the invention is that it allows determination of Hb-compensated or -normalized ESR readings.

[0033]The present invention is based on the phenomenon that when a blood sample is introduced into a cuvette of the present invention (or indeed in any blood sample container in vitro), the red blood cells in the blood tend to stick to each other forming cell stacks or rouleaux. These cell stacks will sediment towards the bot...

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Abstract

The invention discloses a blood analyzing device (100) comprising a holder (110) arranged for carrying a container (10) having a cuvette (20) containing a blood sample (30). The container (10) is positioned in the holder (110) so that a longitudinal axis (60) of the cuvette (20) is angled relative a horizontal axis (70). A light source (120) provides light (40) into the sample (30) and a detector (130) detects the output light (50) from a sub-portion of the blood sample (30). Kinetic information indicative of the change in hemoglobin concentration in a measuring volume (32, 34) is determined by a Hb processor (145) from the detected output light (50). An ESR processor (140) determines the erythrocyte sedimentation rate of the sample (30) based on the kinetic information.

Description

RELATED APPLICATIONS[0001]This application is a continuation of copending U.S. application Ser. No. 12 / 676,308 filed Mar. 3, 2010, which was filed as a PCT International Application No. PCT / SE2008 / 050980 filed Sep. 1, 2008, which claims the benefit under 35 U.S.C. §119(a) to Patent Application No. 0702039-9, filed in Sweden on Sep. 4, 2007, all of which are hereby expressly incorporated by reference into the present application.TECHNICAL FIELD[0002]The present invention generally relates to blood analysis, and in particular to a blood analyzing device capable of determining an erythrocyte sedimentation rate in a blood sample and uses thereof.BACKGROUND[0003]Blood is commonly described as a complex red fluid consisting of plasma with a suspension of blood cells, mainly red blood cells. In an adult the blood volume is approximately 5 liters, of which 40-50% is red blood cells. The ratio between red cells and plasma is called hematocrit. Plasma consists mainly of water with proteins, s...

Claims

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Application Information

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IPC IPC(8): G01N33/72G01N21/25G01N21/59G01N15/05
CPCG01N33/721G01N15/05G01N2201/061G01N21/59G01N21/255G01N21/11G01N21/251G01N2021/054G01N2021/3144G01N33/49
Inventor FORSELL, TOMMY
Owner FORSELL TOMMY
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