A sternal saw is a bone cutter used to perform median sternotomy, opening the patient's chest by splitting the breastbone, or sternum.
It is a reciprocating blade saw that resembles a jigsaw in appearance.
It was invented and introduced by Dr. Edward P. ("Ted") Diethrich in 1963 (see picture of the device in the following external link: [1]).
This article related to medical equipment is a stub.
You can help Wikipedia by expanding it.