Castaneda Sternal RetractorNewMed® Castaneda Sternal Retractor is a specialized surgical instrument designed for neonatal procedures and optimal sternal retraction. Measuring 65.0 mm × 55.0 mm × 30.0 mm × 16.0 mm (newborn) and 72.0mm x 80.0mm x 45.0mm x 12.0mm (infant) and100.0 mm × 125.0 mm × ..