Positive displacement closure devices and methods

An arteriotomy closure device, comprising:

• a housing defining a first at least partially open suction volume and having a first bottom surface;
• a force application feature comprising a fluid displacement member which is further configured to selectively induce negative gauge pressure;
• a securement band having a first top surface and a second bottom surface and defining a gas-impermeable membrane;
• and
• an anvil at least partially disposed within the first at least partially open suction volume and comprising a third bottom surface;
• wherein the securement band further comprises an adhesive feature which at least partially aids in retaining at least a portion of the second bottom surface to a patient’s skin, and further wherein the fluid displacement member is in fluid communication with force application feature is configured to enable application of a suction force to the first at least partially open suction volume, and further wherein at least a second portion of the first top surface is in contact with the third bottom surface when the arteriotomy closure device is transitioned from an undeployed configuration to a deployed configuration.