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Vascular and Endovascular Surgery
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Experimental Study of Effects of the Ultrasonic Surgical Aspirator on the Vascular System

Kazuya Akiyama

Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical College, Tokyo, Japan

Sunao Watanabe

Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical College, Tokyo, Japan

Shigeo Amano

Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical College, Tokyo, Japan

Osamu Sawatani

Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical College, Tokyo, Japan

Hiroshi Nishida

Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical College, Tokyo, Japan

Masahiro Endo

Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical College, Tokyo, Japan

Hitoshi Koyanagi

Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical College, Tokyo, Japan

The effects of an ultrasonic surgical aspirator on the vascular system was evaluated in 12 mongrel dogs. The pathologic effects of the device were investi gated in femoral vessels by light and electron scanning microscopies and the physiologic effects by measuring the internal mammary arterial and femoral venous blood flow.

Changes in the intimal surface of arteries (platelet aggregation and fibrin network formation) were more frequent at higher vibration amplitudes, while such changes were less common in the vein. Disintegration and loss of the vascu lar wall did not extend beyond the adventitia. There was no obvious change in the blood flow pattern or flow rate after administration of ultrasonic vibrations.

The results showed that by keeping the output below 110 microns and using the aspirator together with other conventional surgical devices for dissection, damages to the vascular wall may be held to a minimum. This device can be a very useful supplementary tool in cardiovascular surgery.

Vascular and Endovascular Surgery, Vol. 23, No. 5, 348-354 (1989)
DOI: 10.1177/153857448902300503
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