| 摘要 |
<p>PURPOSE:To provide a simple analyzing device of blood circulating movement. CONSTITUTION:A blood blocking bag 210 and a microphone 220 are provided in a binding band 200. When the air is sent to the blood blocking bag 210 from an air pump 140, the bag internal pressure is raised, and when the air is leaked by a leak valve 15, the bag internal pressure is lowered. The bag internal pressure is controlled by a CPU 130 so that it is raised to a determined value and then gradually lowered. At this lowering time, a Korotkoff sound is detected by the microphone 220 while the bag internal pressure is measured by a pressure sensor 110. The detected Korotkoff sound waveform is stored in a memory 160 in conformation with a pressure value. The Korotkoff sound waveform in the memory 160 is then read, and the envelop of the waveform is determined and outputted to a display device 170 or a printer 180. This envelope is compared with an envelop forming a standard to specify the point of interruption in blood circulation.</p> |
