2 results about "Total blood" patented technology

A method for collecting blood components using a medical system, the method comprising: receiving data associated with a subject by the medical system, the data associated with the subject including the subject's initial hematocrit value; determining the amount of subject-specific pure component to be collected by the medical system, the amount of subject-specific pure component to be collected by the medical system being determined using the subject's hematocrit value, the subject's total blood volume, and a target change in the hematocrit value; and performing a component collection process using the medical system to collect the determined amount of subject-specific pure component.

Apparatuses and methods for measuring total blood volume with ultrasound are disclosed. In one embodiment, a system for monitoring a blood volume of a patient includes an ultrasound transmitter configured for emitting an ultrasound toward a target blood vessel of the patient; and an ultrasound receiver configured for receiving the ultrasound reflected from the target blood vessel of the patient. The system also includes, a controller configured for: determining an expanded state of the blood vessel based on the ultrasound reflected from the target blood vessel; determining a collapsed stated of the blood vessel based on the ultrasound reflected from the target blood vessel; and determining the blood volume of the patient based on the ratio of the collapsed stated and the expanded stated of the blood vessel.