Sample analyzer and computer program product

• US 8,440,140 B2
• Filed: 01/31/2008
• Issued: 05/14/2013
• Est. Priority Date: 02/01/2007
• Status: Active Grant

• Current Assignee: Sysmex Corporation
• Original Assignee: Sysmex Corporation
• Inventors: Nagai, Takaaki, Narisada, Noriyuki, Fukuma, Daigo
• Primary Examiner(s): Sines, Brian J
• Application Number:
  US12/023,830
• Publication Number:
  US 20080187990A1
• Time in Patent Office: 1,930 Days
• Field of Search: 422/50, 422/63, 422/64, 422/65, 422/66, 422/67, 422/81, 422/82, 422/82.01, 422/82.05, 422/68.1, 436/43, 436/47, 436/63, 436/66, 436/67, 436/68, 436/69, 436/70, 436/71
• US Class Current: 422/68.1
• CPC Class Codes: G01N 15/12 by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
• CPC Class Codes: G01N 15/1459 the analysis being performed on a sample stream
• CPC Class Codes: G01N 2015/012 Red blood cells
• CPC Class Codes: G01N 2015/014 Reticulocytes
• CPC Class Codes: G01N 2015/016 White blood cells
• CPC Class Codes: G01N 2015/1486 Counting the particles
• CPC Class Codes: G01N 33/5091 for testing the pathological state of an organism
• CPC Class Codes: G01N 33/5094 for blood cell populations red blood cells G01N33/80
• CPC Class Codes: G01N 33/721 Haemoglobin
• CPC Class Codes: G01N 33/726 Devices
• CPC Class Codes: Y10T 436/11 Automated chemical analysis
• CPC Class Codes: Y10T 436/113332 with conveyance of sample along a test line in a container or rack

Abstract

A sample analyzer prepares a measurement sample from a blood sample or a body fluid sample which differs from the blood sample; measures the prepared measurement sample; obtains characteristic information representing characteristics of the components in the measurement sample; sets either a blood measurement mode for measuring the blood sample, or a body fluid measurement mode for measuring the body fluid sample as an operating mode; and measures the measurement sample prepared from the blood sample by executing operations in the blood measurement mode when the blood measurement mode has been set, and measuring the measurement sample prepared from the body fluid sample by executing operations in the body fluid measurement mode that differs from the operations in the blood measurement mode when the body fluid measurement mode has been set, is disclosed. A computer program product is also disclosed.

Claims

1. A sample analyzer comprising:

a fluid supplying unit for preparing a measurement sample from a blood sample or a body fluid sample that differs from the blood sample and supplying the measurement sample;

a flow cell that the supplied measurement sample passes through;

a light source that irradiates a measurement sample passing through the flow cell with a light;

a light receiver that receives a light generated by irradiating the measurement sample passing through the flow cell with the light and outputs a characteristic information in correspondence to the received light, wherein the characteristic information represents a characteristic of components within the measurement sample;

a microcomputer configured to receive a designation of one measurement mode from among a plurality of measurement modes including at least a blood measurement mode for measuring the blood sample and a body fluid measurement mode for measuring the body fluid sample configured to control the fluid supplying unit so as to supply the blood sample during a first time period when a designation of the blood measurement mode has been received and configured to control the fluid supplying unit so as to supply the body fluid sample during a second time period that is longer than the first time period when a designation of the body fluid measurement mode has been received.

2. The sample analyzer of claim 1, wherein the microcomputer is configured to control the fluid supplying unit so as to prepare the measurement sample that contains the blood sample and a first amount of reagent, and is configured to control the fluid supplying unit so as to prepare the measurement sample that contains the body fluid sample and a second amount of reagent that differs from the first amount.

3. The sample analyzer of claim 1, wherein the microcomputer is configured to control the fluid supplying unit so as to prepare the measurement sample that contains the blood sample and a first kind of reagent, and is configured to control the fluid supplying unit prepares the measurement sample that contains the body fluid sample and a second kind reagent that differs from the first kind of reagent.

4. The sample analyzer of claim 1, wherein the microcomputer is configured to control the fluid supplying unit so as to measure a blank sample that contains neither the blood sample nor the body fluid sample before preparing the measurement sample from the body fluid sample.

5. The sample analyzer of claim 1, wherein the microcomputer is configured to compare a predetermined standard value with an analysis result obtained by analyzing a characteristic information of the measurement sample prepared from the body fluid sample output by the light receiver and configured to control the fluid supplying unit so as to execute a washing operation when the analysis result is greater than the standard value.

6. The sample analyzer of claim 1, wherein the body fluid sample is selected from among a group consisting of cerebrospinal fluid, thoracic fluid, abdominal fluid, fluid of the cardiac sac, synovial fluid, dialysate from peritoneal dialysis, and intraperitoneal rinse.