| CPC A61M 1/84 (2021.05) [A61M 1/69 (2021.05); A61M 25/0017 (2013.01); A61M 2205/33 (2013.01)] | 19 Claims |
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1. A drainage system for draining a fluid from a patient, the drainage system comprising:
a drainage tube configured to provide fluid communication between a catheter and a collection container;
an input airflow device coupled to the drainage tube and configured to provide airflow into the drainage tube;
a pressure sensor operatively coupled to the drainage tube to measure an internal pressure of the drainage tube;
an output airflow device coupled to the collection container to draw airflow out of the drainage tube; and
a controller communicatively coupled to the pressure sensor, the input airflow device, and the output airflow device, the controller including control logic configured to:
(i) acquire pressure data from the pressure sensor;
(ii) determine a running pressure rate-of-change from the acquired pressure data;
(iii) compare the running pressure rate-of-change with a pressure rate-of-change defined by the control logic;
(iv) adjust an operating characteristic of at least one of the input airflow device and the output airflow device to move the running pressure rate-of-change toward the pressure rate-of-change defined by the control logic; and
(v) measuring a pressure noise level to determine a presence of droplets within the drainage tube and modifying the input airflow device from a first airflow rate to a second airflow rate by modifying the pressure rate-of-change defined by the control logic.
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