| 摘要 |
The Blood Infusion Control System of the present invention integrates components of rapid infusion systems with a computer controller designed to synchronize two infusion pumps in a manner that produces a pre-selected patient hematocrit (HCT*) while reporting the patient's estimated blood volume (BVE). In order to attain HCT*, the Blood Replacement Controller (BRC) drives a dual-pump assembly to deliver streams of asanguinous fluid and blood through flexible conduits into intravenous (IV) catheters to mix with the patient's blood volume having an initial hematocrit (HCTi). The BRC utilizes measured patient data as feedback input to control flowrates of the two-pump infusion assembly. The patient's estimated blood volume is extrapolated from hematocrit changes in response to the fluid and blood infusion. The major components that comprise BICS are two infusion pumps, a microcomputer controller to actuate the two pumps, a heat exchanger, a bubble trap-filter, air/temperature/pressure sensors, and disposable tubing conduits. The design methodology represents a blood infusion device that can rapidly deliver filtered, bubble free, warmed volumes to patients with significant hypovolemia. This subject invention is a sample data control system that rapidly dispenses crystalloid/colloid fluids and red blood cells by venous infusion in a manner that 1) achieves HCT* in the patient and 2) reports the patient's BVE. BICS could enhance the ability of clinical teams in operating rooms and trauma receiving areas to stabilize patients suffering cardiovascular deterioration from acute blood loss.
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