Collapsible bag vessel with antifoaming device
View Patent ↗Disclosed herein are fluid containment systems such as gas delivery configurations, foam control systems and bag molding methods and articles for supported collapsible bag vessels and bioreactors. A vessel may include a device which can reduce the foam produced or contained within the vessel. Sensors and/or controllers may optionally be used to monitor and/or control foaming.
1. A vessel configured to contain a volume of liquid comprising:
a container able to contain the volume of liquid;
a magnetically-driven antifoaming device, at least a portion of which is positioned in a head space of the container when the container contains the volume of liquid, the antifoaming device including an internal magnetic hub within the container which rotates at the direction of an external magnetic drive head, the antifoaming device being configured and arranged to break up foam in the head space during rotation of at least a portion of the antifoaming device, and
a foam sensor and control system for operating said antifoaming device when said foam sensor detects the level of foam in the vessel has reached a pre-determined limit.
2. The vessel of claim 1 , wherein the container is a collapsible bag.
3. The vessel of claim 2 , further comprising a reusable support structure surrounding and containing the collapsible bag.
4. The vessel of claim 1 , wherein the antifoaming device comprises an impeller that is magnetically rotated about a single axis, the impeller connected to a top portion of the container.
5. The vessel of claim 1 , wherein the antifoaming device comprises an impeller that is magnetically rotated about a single axis, wherein the control system being operatively associated with the magnetically-driven antifoaming device and the foam sensor; wherein the foam sensor comprises a first portion including a probe and a second portion including a wall of the vessel; and wherein the antifoaming device is regulated by the control system via detection of electrical current flow between the probe and the wall.
6. A vessel configured to contain a volume of liquid, the vessel comprising:
a collapsible bag able to contain the liquid;
a reusable support structure surrounding and containing the collapsible bag;
a pressure sensor for determining a pressure in the collapsible bag, the pressure sensor in fluid communication with the collapsible bag;
an antifoaming device at least a portion of which is positioned in a head space of the container when the container contains the volume of liquid, the antifoaming device including an internal magnetic hub within the container which rotates at the direction of an external magnetic drive head, and configured to break up foam in the collapsible bag; and
a control system operatively associated with the pressure sensor and the antifoaming device, wherein the control system regulates the antifoaming device upon receipt of a signal from the pressure sensor that the location of foam detected in the vessel is within a predetermined area of the vessel.
7. The vessel of claim 4 , wherein said sensor detects foam about said impeller.
8. The vessel of claim 7 , wherein said sensor is located within the headspace of the vessel.
9. The vessel of claim 1 , wherein said sensor is located within one of the headspace of the vessel or an outlet port of the vessel.
10. The vessel of claim 1 , wherein said sensor comprises a plurality of sensors within the vessel.