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A corporeal drainage system and a method of draining fluid from a bodily cavity. The corporeal drainage system includes a connection tube and a fluid receptacle in fluid communication with the connection tube. The fluid receptacle creates a negative pressure in the system by transitioning from a col

A corporeal drainage system and a method of draining fluid from a bodily cavity. The corporeal drainage system includes a connection tube and a fluid receptacle in fluid communication with the connection tube. The fluid receptacle creates a negative pressure in the system by transitioning from a collapsed configuration to an expanded configuration. The system may include an activation member to initiate transitioning of the fluid receptacle.

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1. A corporeal drainage system, comprising: a connection tube;a fluid receptacle in fluid communication with the connection tube such that a bodily fluid may drain from the connection tube into an interior of the fluid receptacle, wherein the fluid receptacle has only one fold/seam around a perimete

1. A corporeal drainage system, comprising: a connection tube;a fluid receptacle in fluid communication with the connection tube such that a bodily fluid may drain from the connection tube into an interior of the fluid receptacle, wherein the fluid receptacle has only one fold/seam around a perimeter of the fluid receptacle in a collapsed configuration and only one opening to the interior,the opening in fluid communication with the connection tube;wherein the connection tube connects to the fluid receptacle at the fold/seam; andactivation members connected to an exterior surface of the fluid receptacle, the activation members configured to apply a pulling force to the fluid receptacle to initiate transitioning of the fluid receptacle from the collapsed configuration to an expanded configuration to thereby create a negative pressure in the system. 2. The corporeal drainage system according to claim 1, wherein the activation members are symmetrical. 3. The corporeal drainage system according to claim 1, wherein the fluid receptacle is a flexible bag. 4. The corporeal drainage system according to claim 3, wherein the flexible bag is a single-use, disposable bag. 5. The corporeal drainage system according to claim 1, wherein the activation members are attached to rigid members on opposing sides of the fluid receptacle. 6. The corporeal drainage system according to claim 5, wherein the activation members comprise a first pull tab and a second pull tab respectively connected to the rigid members on opposing sides of the fluid receptacle. 7. The corporeal drainage system according to claim 5, wherein, in the collapsed configuration, the fold/seam is external to the rigid members. 8. The corporeal drainage system according to claim 5, wherein the rigid members are connected to each other only by flexible walls of the fluid receptacle. 9. The corporeal drainage system according to claim 1, further configured to operate as a passive drainage system after transition of the fluid receptacle from the collapsed configuration to the expanded configuration has been initiated via the activation members. 10. The corporeal drainage system according to claim 9, wherein the system is configured to operate as a passive siphoning system when the fluid receptacle is placed at a level below a body cavity to be drained after transition of the fluid receptacle from the collapsed configuration to the expanded configuration has been initiated via the activation members. 11. The corporeal drainage system according to claim 1, wherein the fluid receptacle has an initial rest state in a fully or approximately fully collapsed configuration. 12. The corporeal drainage system according to claim 1, wherein the connection tube includes a drainage line connector at a distal end thereof, the drainage line connector configured for sealing attachment to a catheter connector on a catheter, the catheter connector including a tapered feature abutted by a deformable sealing element, the drainage line connector including an actuating member that deforms the deformable sealing element such that the tapered feature is separated from the deformable sealing element in an open configuration. 13. A corporeal drainage system, comprising: a connection tube;a fluid receptacle for receiving a bodily fluid having only one opening to its interior, the opening in fluid communication with the connection tube, the fluid receptacle having an initial rest state in a fully or approximately fully collapsed configuration before any force is applied;wherein the connection tube connects to the fluid receptacle on a side edge of flexible side walls; andan activation member configured to apply an external pulling force to the fluid receptacle, thereby creating a negative pressure in the system by transitioning the fluid receptacle from the collapsed configuration to an expanded configuration. 14. The corporeal drainage system according to claim 13, wherein the fluid receptacle comprises opposing first and second rigid end sections connected to the flexible side walls. 15. The corporeal drainage system according to claim 14, wherein the activation member comprises a first pull tab and a second pull tab respectively connected to the first rigid end section and the second rigid end section. 16. The corporeal drainage system according to claim 15, wherein the first pull tab and the second pull tab are symmetrical. 17. The corporeal drainage system according to claim 14, wherein, in the collapsed configuration, the flexible side walls are external to the opposing first and second rigid end sections. 18. The corporeal drainage system according to claim 13, wherein the system is configured to operate as a passive drainage system after initial activation. 19. The corporeal drainage system according to claim 13, wherein the connection tube includes a drainage line connector at a distal end thereof, the drainage line connector configured for sealing attachment to a catheter connector on a catheter, the catheter connector including a tapered feature abutted by a deformable sealing element, the drainage line connector including an actuating member that deforms the deformable sealing element such that the tapered feature is separated from the deformable sealing element in an open configuration. 20. A corporeal drainage system, comprising: a connection tube;a flexible bag having only one opening to its interior, the opening in fluid communication with the connection tube such that a bodily fluid may drain from the connection tube into the interior of the flexible bag, wherein the flexible bag has only one fold/seam around a perimeter of the flexible bag in a collapsed configuration;wherein the connection tube connects to the flexible bag at the fold/seam;rigid members attached to opposing sides of the flexible bag; andactivation members attached to an exterior surface of the rigid members, the activation members configured to apply an external pulling force to the flexible bag to initiate transitioning of the fluid receptacle from the collapsed configuration to an expanded configuration to thereby create a negative pressure in the system.