1. Immobilized instrument for minimally invasive direct coronary artery bypass: Midcab doughnut 
Masao Takahashi, MD, Shinichiro Yamamoto, MD, Shigeki Tabata, MD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 114, Issue 4, Pages (October 1997)
DOI: /S (97)
Copyright © 1997 Mosby, Inc. Terms and Conditions

2. Fig. 1 Schema of the MIDCAB doughnut. ITA, Internal thoracic artery.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Mosby, Inc. Terms and Conditions

3. Fig. 2
The instrument was fixed to the heart by air suction. Both a motionless and bloodless operative field could be obtained with the use of this instrument.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Mosby, Inc. Terms and Conditions