[Use of the brock punch for confection of a shunt between both ventricles, the ventricle and pulmonary artery or aorta without cardiopulmonary by-pass (CPB) (author's transl)].

Use of the Brock punch for placing a graft on the ventricle is a simple and easy technique not requiring CPB. This offers large experimental possibilities with clinical applications resulting from the experience gained in the laboratory.