Drainage systems including displacement body for providing a negative pressure for draining and collecting bodily fluids

A method of forming a drainage system for draining a bodily fluid from a body cavity, the method comprising:

• fluidly connecting an outlet end of an drainage conduit to an inlet of a fluid-receiving container and fluidly connecting a first one-way valve to the drainage conduit, the one-way valve providing a one-way fluid flow direction through the drainage conduit into a fluid-receiving volume of the fluid-receiving container;
• fluidly connecting a displacement body to the drainage conduit in an out-of-line fashion;
• and
• fluidly connecting a connector to an inlet end of the drainage conduit, the connector configured to connect to a drainage catheter;
• wherein the displacement body is configured to be actuated manually to provide a negative pressure to a fluid-receiving passageway through the drainage conduit, the one-way valve inhibiting air from being drawn from the fluid-receiving volume of the fluid-receiving container due to the negative pressure.

A drainage system for draining bodily fluid, the drainage system comprising:

• a fluid-receiving container having a fluid-receiving volume located therein that is configured to receive a bodily fluid, the fluid-receiving container comprising an inlet;
• a drainage conduit communicatively coupled to the inlet of the fluid-receiving container, the drainage conduit being communicatively coupled to a connector that connects to a drainage catheter;
• a first one-way valve that provides a one-way fluid flow direction through the drainage line and into the fluid-receiving volume;
• and
• a displacement body that is out-of-line with the drainage conduit and fluidly connected to the drainage conduit, the displacement body configured to be actuated and released to provide a negative pressure to a fluid-receiving passageway through the drainage conduit;
• wherein the displacement body is located between the first one-way valve and a second one-way valve;
• wherein compressing the displacement body displaces air within the displacement body, the second one-way valve preventing air from entering the displacement body, the first one-way valve allowing a negative pressure to be communicated from the displacement body, through the drainage conduit and to the connector.