Devices and methods for compressing a digit to facilitate removal of a ring

A compression device for freeing a ring trapped on a digit, the compression device comprising:

• a rigid outer body extending from a body proximal portion having a body proximal end to a body distal portion having a body distal end, the rigid outer body comprising:
• a digit cavity extending from a cavity proximal opening at the body proximal end to a cavity distal opening at the body distal end, and
• a fluid inlet;
• and
• one or more bladder engagement members collectively having a disengaged position that permits insertion and removal of a flexible tubular bladder through the digit cavity, and an engaged position to seal the flexible tubular bladder extending through the digit cavity to the body proximal and distal portions,
• wherein in the engaged position, the flexible tubular bladder defines at least a portion of a tubular inflation chamber inside the digit cavity.

A compression device for freeing a ring trapped on a digit, the compression device comprising:

• a rigid outer body extending from a body proximal portion having a body proximal end to a body distal portion having a body distal end, the rigid outer body comprising:
• a digit cavity extending from a cavity proximal opening at the body proximal end to a cavity distal opening at the body distal end,
• a fluid inlet;
• a removable flexible tubular bladder extending through the digit cavity, the bladder defining at least a portion of an annular inflation chamber inside the digit cavity;
• and
• a controller having one or more processors, and memory storing computer readable instructions that when executed by the one or more processors configure the one or more processors to collectively:
• direct a fluid source to supply fluid through the fluid inlet into the inflation chamber,
• while directing the fluid source to supply fluid, receive signals indicative of a fluid pressure in the inflation chamber, and
• direct the fluid source to slow or stop supplying fluid into the inflation chamber in response to determining that the fluid pressure in the inflation chamber has reached a predetermined target pressure.