Patent ID: 11883261
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 43:
44. A dressing for treating a tissue site, comprising:
an inlet port configured to provide fluid communication to the dressing;
a valve configured to be activated from a closed position to an open position based on a liquid saturation level in the dressing, the valve configured to preclude fluid communication to ambient air external to the dressing in the closed position and to permit fluid communication to the ambient air in the open position, wherein the valve comprises a temporary plug including a soluble material configured to dissolve in the presence of moisture such that the temporary plug is fluid impermeable when the valve is in the closed position and fluid permeable when the valve is in the open position after the soluble material has been exposed to the liquid saturation level for a pre-determined time.