Mechanical cardiopulmonary resuscitation device suction cup

A mechanical cardiopulmonary resuscitation (CPR) device, comprising:

• a piston;
• a suction cup, comprising:
• a piston facing surface having a connector structured to attach to the piston at an end of the piston,
• a first circular member extending from the piston-facing surface in a direction away from an end of the piston and forming a suction cup, the first circular member having an interior surface that forms a concave structure,
• a second circular member concentric to the first circular member extending from the piston-facing surface in the direction away from the end of the piston and forming a rigid member, the second circular member having a diameter at a distal end that is less than a diameter of the first circular member, wherein the distal end of the second circular member abuts the interior surface of the first circular member when the suction cup is compressed, and
• an identifier configured to output an identification of the suction cup when attached to the piston;
• and
• a processor configured to receive the identification of the suction cup when attached to the piston and to adjust a treatment protocol based on the identification of the suction cup.