Used primarily in medical settings, particularly during surgeries, to collect and reinfuse a patient's own blood. This process reduces the need for donor blood transfusions, minimizing the risk of transfusion reactions and infections. It is especially beneficial in procedures with significant blood loss, such as orthopedic, cardiac, and trauma surgeries. The technique involves suctioning blood from the surgical site, filtering and washing it, and then returning it to the patient's circulation. This approach supports blood conservation and improves patient outcomes by maintaining adequate blood volume and oxygen delivery during and after surgery.