Objective: We recently developed a new device to temporize bleeding from penetrating cardiac injuries. To further understand the usefulness of the device, we put it to the test by less experienced physicians. Methods: General surgery residents participating in the “Advanced Trauma Operative Management (ATOM)” course tested the device. Each participant had to control bleeding from a cardiac injury in a swine. A questionnaire was completed and analyzed. Results: The number (n) of participants is 20; 95% of the participants stated that the device controlled the bleeding, 100% considered it easy to use, 80% of the participants had previously seen a cardiac injury, and 35% had experience using a hemorrhage control device in a human heart. Only 15% of the participants had sutured a human heart and 55% an animal heart; 90% responded that they would use the new device clinically. Conclusion: The new device was easy to use and effectively controlled the bleeding in penetrating cardiac injuries regardless of the level of experience of the physician.