| 摘要 |
PROBLEM TO BE SOLVED: To provide a monitoring device of a puncture part capable of monitoring the detachment of a puncture needle or the separation from the puncture needle of a flexible tube so as to detect it in an early stage, and minimizing adverse influence by the detachment or separation of the puncture needle and to provide a blood purifier provided with the same. SOLUTION: The monitoring device of the puncture part includes: a first detection means 7 fixed to the flexible tube near a vein side puncture needle b and composed of an acceleration sensor capable of detecting the inclination of the fixed part and outputting output signals; a second detection means 8 fixed near the first detection means 7 and composed of an acceleration sensor capable of detecting the inclination of the fixed part and outputting output signals; and a monitoring means 9 inputting and monitoring the output signals from the first detection means 7 and the second detection means 8 with time and detecting that the inclinations detected in the first detection means 7 and the second detection means 8 respectively are relatively changed. COPYRIGHT: (C)2011,JPO&INPIT
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