Sample conveying device and sample conveying method

{
  "publication_number": "US2025085304A1",
  "country": "US",
  "kind": "A1",
  "title": "Sample conveying device and sample conveying method",
  "abstract": "A sample conveying device estimates a factor causing a decrease in a conveyance speed of a sample. The sample conveying device includes a conveying container that includes a magnet or magnetic material and contains a sample, a conveyance unit in which a plurality of magnetic poles, each of which includes a core and a coil, are arranged. The conveying container is moved on a conveying surface. A control unit controls a voltage applied to the plurality of magnetic poles, detects a position of the conveying container on the conveying surface, and controls movement of the conveying container. The control unit detects an amplitude of a current flowing through the coil of each of the plurality of magnetic poles when the conveying container approaches each of the plurality of the magnetic poles, and determines deterioration of the conveying surface based on the detected amplitude of the current.",
  "claims": [
    "1. A sample conveying device comprising: a conveying container that includes a magnet or magnetic material and contains a sample; a conveyance unit in which a plurality of magnetic poles, each of which includes a core and a coil, are arranged and the conveying container is moved on a conveying surface; and a control unit that controls a voltage applied to the plurality of magnetic poles, detects a position of the conveying container on the conveying surface, and controls movement of the conveying container, wherein the control unit detects an amplitude of a current flowing through the coil of each of the plurality of magnetic poles when the conveying container approaches each of the plurality of the magnetic poles, and determines whether a value of the amplitude of the current at the timing when position detection of the conveying container is started is within a threshold and determines deterioration of whether there is a scrape on the conveying surface. 2. (canceled) 3. The sample conveying device according to claim 1, wherein the control unit includes an operation unit that calculates an estimated conveyance time according to a conveyance source, conveyance destination, conveyance path, and conveyance distance of the conveying container of the conveyance unit, and a moving time calculation unit that acquires the time required for an actual conveyance of the conveying container, and the operation unit determines whether the conveying surface is deteriorated, and when it is determined that the conveying surface is deteriorated, determines that the conveying surface, where it determined that there is the deterioration, is not usable, and excludes the conveying surface from conveyance paths of the conveying container, thereby excluding the magnetic pole arranged at a position corresponding to the conveying surface, where it determined that there is the deterioration, and the magnetic pole arranged upstream thereof from the conveyance path of the conveying container. 4. The sample conveying device according to claim 1, wherein the control unit includes an operation unit that calculates an estimated conveyance time according to a conveyance source, conveyance destination, conveyance path, and conveyance distance of the conveying container of the conveyance unit, a moving time calculation unit that acquires the time required for an actual conveyance of the conveying container, and a display unit, and the operation unit determines deterioration of the conveying surface based on the amplitude of the detected current, and when it is determined that the conveying surface is not deteriorated, determines whether conveyance paths for which the moving time is longer than the estimated conveyance time include a conveyance path that cannot be excluded from the conveyance path for conveying the conveying container, and when it is determined that the conveyance path that cannot be excluded is included, displays on the display unit that the conveyance path cannot be excluded. 5. The sample conveying device according to claim 3, further comprising: a display unit, wherein the operation unit calculates the conveyance path of the conveying container by excluding the conveyance path, where it determined that there is the deterioration, calculates a processing capacity of the conveying container according to the calculated conveyance path, determines whether the calculated processing capacity is equal to or higher than a threshold, and when it is determined that the processing capacity is equal to or higher than the threshold, displays on the display unit that the conveyance path is to be changed, and when it is determined that the processing capacity is less than the threshold, displays on the display unit that an upper surface of the conveying surface of the conveyance path, where it determined that there is the deterioration, is to be replaced. 6. The sample conveying device according to claim 4, wherein the operation unit determines deterioration of the conveying surface based on the amplitude of the detected current, and when it is determined that the conveying surface is not deteriorated, determines whether the conveyance paths for which the moving time is longer than the estimated conveyance time include the conveyance path that cannot be excluded from the conveyance path for conveying the conveying container, and when it is determined that the conveyance path that cannot be excluded is not included, determines that abnormality is due to the presence of an obstacle on the conveying surface, and displays on the display unit that the conveyance path is to be changed. 7. A sample conveying method including a conveying container that includes a magnet or magnetic material and contains a sample, and a conveyance unit in which a plurality of magnetic poles, each of which includes a core and a coil, are arranged and the conveying container is moved on a conveying surface, controlling a voltage applied to the plurality of magnetic poles, detecting a position of the conveying container on the conveying surface, and controlling movement of the conveying container, the method comprising: detecting an amplitude of a current flowing through the coil of each of the plurality of magnetic poles when the conveying container approaches each of the plurality of the magnetic poles; and determining whether a value of the amplitude of the current at the timing when position detection of the conveying container is started is within a threshold and determining deterioration of whether there is a scrape on the conveying surface. 8. (canceled) 9. The sample conveying method according to claim 7, wherein it is determined whether the conveying surface is deteriorated, and when it is determined that the conveying surface is deteriorated, it is determined that the conveying surface, where it determined that there is the deterioration, is not usable, and the conveying surface is excluded from conveyance paths of the conveying container, thereby excluding the magnetic pole arranged at a position corresponding to the conveying surface determined to be deteriorated and the magnetic pole arranged upstream thereof from the conveyance path of the conveying container. 10. The sample conveying method according to claim 7, wherein deterioration of the conveying surface is determined based on the amplitude of the detected current, and when it is determined that the conveying surface is not deteriorated, it is determined whether conveyance paths for which the moving time is longer than the estimated conveyance time include a conveyance path that cannot be excluded from the conveyance path for conveying the conveying container, and when it is determined that the conveyance path that cannot be excluded is included, a fact that the conveyance path cannot be excluded is displayed on the display unit. 11. The sample conveying method according to claim 9, wherein the conveyance path of the conveying container by excluding the conveyance path, where it determined that there is the deterioration, is calculated, a processing capacity of the conveying container according to the calculated conveyance path is calculated, it is determined whether the calculated processing capacity is equal to or higher than a threshold, and when it is determined that the processing capacity is equal to or higher than the threshold, a fact that the conveyance path is to be changed is displayed on the display unit, and when it is determined that the processing capacity is less than the threshold, a fact that an upper surface of the conveying surface of the conveyance path, where it determined that there is the deterioration, is to be replaced is displayed on the display unit. 12. The sample conveying method according to claim 10, wherein deterioration of the conveying surface is determined based on the amplitude of the detected current, and when it is determined that the conveying surface is not deteriorated, it is determined whether the conveyance paths for which the moving time is longer than the estimated conveyance time include a conveyance path that cannot be excluded from the conveyance path for conveying the conveying container, and when it is determined that the conveyance path that cannot be excluded is not included, it is determined that abnormality is due to the presence of an obstacle on the conveying surface, and a fact that the conveyance path is to be changed is displayed on the display unit."
  ],
  "description_excerpt": "The present invention relates to a sample analysis device and a sample conveying method for analyzing a biological specimen (hereinafter referred to as “sample”) such as blood, plasma, serum, urine, and other body fluids.\n\nA sample analysis system for clinical testing performs a test for a specified analysis item on the sample (sample) such as blood, plasma, serum, urine, and other body fluids. The sample analysis system connects devices having a plurality of functions and automatically executes the processing of each process. That is, to streamline the work in an examination room, an analysis unit (analysis process) that performs a plurality of analyses such as biochemistry and immunology and a pretreatment unit (pretreatment process) that performs a plurality of pretreatments required for the analyses, and the like, are connected via a conveyance line and used as a single sample analysis system. In recent years, the importance of specimen analysis has increased due to the advance of medical care and the aging of patients. Therefore, to improve the analysis processing capacity of the specimen analysis system, there is a demand for high-speed conveyance, large-volume conveyance, simultaneous conveyance, and multidirectional conveyance of the specimens.\n\nAs background technology in the technical field, there is PTL 1. PTL 1 describes a laboratory specimen delivery system that is very flexible and has high conveyance performance.",
  "cpc": [
    "G01N 35/026",
    "B65G 54/02",
    "G01N 2035/00891",
    "G01N 2035/0406",
    "G01N 2035/0477",
    "G01N 2035/0491",
    "G01N 35/0092",
    "G01N 35/04"
  ],
  "ipc": [
    "G01N 35/00",
    "G01N 35/02",
    "G01N 35/04"
  ],
  "assignees": [
    "HITACHI HIGH TECH CORP"
  ],
  "inventors": [
    "HOMMA Shotaro",
    "ONIZAWA KUNIAKI",
    "SHIGA YUICHIRO"
  ],
  "filing_date": "2022-05-30",
  "publication_date": "2025-03-13",
  "priority_date": "2021-08-24",
  "application_number": "US-202218580133-A",
  "family_id": "85321761"
}