Tissue compression device with multi-chamber bladder

A tissue compression device comprising:

• a compression device body comprising:
• a base comprising a bottom surface configured to face selected tissue and a top surface configured to face away from the selected tissue when the compression device body is positioned over the selected tissue;
• a bladder orifice formed through the compression device body from the bottom surface to the top surface;
• a bladder positioned in the bladder orifice, the bladder comprising a plurality of chambers,
• wherein an upper chamber of the plurality of chambers is positioned adjacent a lower chamber of the plurality of chambers,
• wherein the upper chamber is connected to the lower chamber about an opening formed between the upper chamber and the lower chamber, wherein fluid in the upper chamber can pass into or out of the lower chamber through the opening,
• wherein the upper chamber is located above the top surface of the base and the lower chamber is located below the bottom surface of the base,
• wherein an outer perimeter of the upper chamber has a different shape than a shape of an outer perimeter of the lower chamber when both outer perimeters are projected onto a plane transverse to a compression axis passing through the upper surface of the bladder, the bladder orifice, and the lower surface of the bladder;
• a dial attached to the base and configured to rotate about the compression axis, wherein rotation of the dial in a first direction about the axis moves the dial towards the top surface of the base and rotation of the dial about the axis in a second direction moves the dial away from the top surface of the base, and wherein the upper chamber of the bladder is located between the dial and the top surface of the base;
• and
• retention structure attached to the compression device body, the retention structure configured to retain the compression device body in a selected location over the selected tissue.

A tissue compression device comprising:

• a compression device body comprising:
• a base comprising a bottom surface configured to face selected tissue and a top surface configured to face away from the selected tissue when the compression device body is positioned over the selected tissue;
• a bladder orifice formed through the compression device body from the bottom surface to the top surface;
• a bladder positioned in the bladder orifice, the bladder comprising a plurality of chambers,
• wherein an upper chamber of the plurality of chambers is positioned adjacent a lower chamber of the plurality of chambers,
• wherein the upper chamber is connected to the lower chamber about an opening formed between the upper chamber and the lower chamber, wherein fluid in the upper chamber can pass into or out of the lower chamber through the opening,
• wherein the upper chamber is located above the top surface of the base and the lower chamber is located below the bottom surface of the base;
• a dial attached to the base and configured to rotate about an axis that extends through the upper chamber of the bladder, the bladder orifice in the base, and the lower chamber of the bladder, wherein rotation of the dial in a first direction about the axis moves the dial towards the top surface of the base and rotation of the dial about the axis in a second direction moves the dial away from the top surface of the base, and wherein the upper chamber of the bladder is located between the dial and the top surface of the base;
• and
• a retention structure attached to the compression device body, the retention structure configured to retain the compression device body in a selected location over the selected tissue.