1. Sternal Retractor for Internal Mammary Artery
Sanjay M. Jain, MCh, Shrikant D. Kole, MCh 
The Annals of Thoracic Surgery 
Volume 62, Issue 3, Pages (August 1996)
DOI: /S (96)
Copyright © 1996 The Society of Thoracic Surgeons Terms and Conditions

2. Fig. 1
The retractor: (A) surgeon's side arm, (B) mobile arm on assistant side, and (C) gear with lock.
The Annals of Thoracic Surgery  , DOI: ( /S (96) )
Copyright © 1996 The Society of Thoracic Surgeons Terms and Conditions

3. Fig. 2
Internal mammary artery retractor in about 45-degree rotation showing (C1) spring lock and (C2) gear system.
The Annals of Thoracic Surgery  , DOI: ( /S (96) )
Copyright © 1996 The Society of Thoracic Surgeons Terms and Conditions

4. Fig. 3 Internal mammary artery exposure in situ.
The Annals of Thoracic Surgery  , DOI: ( /S (96) )
Copyright © 1996 The Society of Thoracic Surgeons Terms and Conditions