Chest drainage systems and methods

摘要

A chest drainage system includes a collection device and a fluid pathway configured to extend from the collection device to a patient. The fluid pathway has a proximal portion configured to extend proximally toward the patient and a distal portion configured to extend distally from the patient. The chest drainage system also includes a pressure source including an accumulator configured to selectively provide sub-atmospheric pressure to the distal portion of the fluid pathway and a valve configured to selectively relieve pressure in the proximal portion of the fluid pathway. The system is configured to open the valve and to introduce the sub-atmospheric pressure from the accumulator of the pressure source when a predetermined pressure differential is detected between the proximal and distal portions of the fluid pathway.

主权项

1. A chest drainage system including:
a collection device configured to receive a first sub-atmospheric pressure from a first pressure source; a fluid pathway configured to extend from the collection device to a patient and receive the first sub-atmospheric pressure via the collection device, the fluid pathway having a proximal portion configured to extend proximally toward the patient and a distal portion configured to extend distally from the patient; a second pressure source configured to selectively generate a second sub-atmospheric pressure more negative than the first sub-atmospheric pressure; a pressure accumulator configured to store the second sub-atmospheric pressure generated by the second pressure source, the second pressure source and the pressure accumulator coupled to the collection device at a location outside of the fluid pathway; and a valve positioned between the collection device and the pressure accumulator and configured to selectively couple the pressure accumulator to the proximal portion of the fluid pathway via the collection device, wherein the system has a first state in which the valve is closed and the pressure accumulator is not coupled to the fluid pathway, and a second state in which the valve is opened and the second sub-atmospheric pressure from the pressure accumulator is introduced into the proximal portion of the fluid pathway, the second state occurring when a predetermined pressure differential is detected between the proximal and distal portions of the fluid pathway.