超音波外科用吸引装置の心血管系に及ぼす影響に関する実験的研究

概要

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The effects on the heart and vessels induced by ultrasonic vibration were evaluated in 12 mongrel dogs. The ultrasonic aspiration system (Sonotes MAA-2511) was used within an smplitude range of 80 to 200 microns in this study. The effects of ultrasonic vibration on the vessel were studied by photo-and electroscanning microscopy and those of the heart were studied by photomicroscopy. Flow of the mammary artery and femoral vein was measured by ultrasonic doppler flowmeter before and after ultrasonic vibration treatment. When the amplitude of ultrasonic vibration was over 130 microns, significant gross fibrin networks and platelet aggregations developed over the internal sufrace of the vessel. The damage to the wall of the blodd vessel was more prominent over the same intensity of the vibration. But no significant change of flow due to vasospasm was found in either the mammary artery of femoral vein. From our experimental data, we suggest that damage to the heart and vessels can be avoided and this system can be used effectively on the heart and vessels without adverse effects by keeping the amplitude of the ultrasonic vibration below 110 microns.
日本医療機器学会の論文
1987-08-01