BLOOD FLUID REMOVAL SYSTEM PERFORMANCE MONITORING

摘要

Monitoring of the performance of a blood fluid removal medium of a blood fluid removal device includes monitoring of condition, such as fluid flow rate or concentration of blood waste product, downstream of the medium. Upstream monitoring of the condition may also be performed to enhance the ability to determine whether the blood fluid removal medium is performing within predetermined ranges.

主权项

1. A blood fluid removal system comprising:
a medium housing defining a major chamber; a blood fluid removal membrane disposed into the media housing and sealingly dividing the major chamber into first and second minor chambers; a first inlet and a first outlet in fluid communication with the first minor chamber, wherein the system is configured such that blood enters the first minor chamber through the first inlet and exits the first minor chamber though the first outlet; a second outlet in fluid communication with the second minor chamber, wherein the system is configured such that fluid removed from the blood exits the second minor chamber through the second outlet; a first sensor configured to detect an indicator of a blood waste product or fluid flow at or downstream of the second outlet; control electronics configured to acquire data from the sensor and configured to determine whether the membrane is functioning within predetermined parameters based on the acquired data; and further comprising: (i) a second inlet in communication with the second minor chamber, wherein dialysate is configured to flow through the second inlet and the second outlet; and (ii) a dialysate flow controller operably coupled to the control electronics, wherein, if the membrane is determined not to be functioning within predetermined limits, the control electronics are configured to adjust one or more system parameters selected from the group of: adjusting a dialysate flow rate via the dialysate flow controller, adjusting a blood flow rate via a blood flow control element, and adjusting a pressure differential between the first minor chamber and the second minor chamber.