#corrective__restorative  a device for treating injury or disease
  supertype:  device  an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
  subtype:  pack.corrective  a sheet or blanket (either dry or wet) to wrap around the body for its therapeutic effect
  subtype:  face_pack__pack  a cream that cleanses and tones the skin
  subtype:  pick-me-up__pickup  anything with restorative powers; "she needed the pickup that coffee always gave her"
  subtype:  prosthesis__prosthetic_device  corrective consisting of a replacement for a part of the body
     subtype:  glass_eye__glasseye  prosthesis consisting of an artificial eye made of glass
     subtype:  implant  a prosthesis placed permanently in tissue
        subtype:  artificial_heart  a pump that replaces the natural heart
           subtype:  Jarvik_heart__Jarvik_artificial_heart  a kind of artificial heart that has been used with some success
        subtype:  artificial_joint  an metal or plastic part that is surgically implanted to replace a natural joint (possibly elbow or wrist but usually hip or knee)
        subtype:  breast_implant  an implant for cosmetic purposes to replace a breast that has been surgically removed
        subtype:  dental_implant  an implant that replaces a natural tooth
        subtype:  heart_valve  an implant that replaces a natural heart valve
        subtype:  lens_implant  a clear plastic lens implanted in the eye; usually done when the natural lens has been removed in a cataract operation
        subtype:  penile_implant  an implant that creates an artificial erection
        subtype:  shunt.implant  implant consisting of a tube made of plastic or rubber; for draining fluids within the body
     subtype:  obturator  a prosthesis used to close an opening (as to close an opening of the hard palate (usually in cases of cleft palate))
     subtype:  wooden_leg__peg__pegleg  a prosthesis that replaces a missing leg

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