title: An improved retractor for cardiac and thoracic operations.
abstract: Several standard abdominal wall retractors have been modified to improve exposure at the extremes of thoracic and groin incisions and to enhance the efficiency and comfort of the assistant in supplying adequate visibility in these areas.
mesh_terms: D006348:Cardiac Surgical Procedures / Q000295:instrumentation*; D006801:Humans; D013525:Surgical Instruments; D013903:Thoracic Surgery / Q000295:instrumentation*