Hot-water bottle applicable as a collar has in empty state a shape similar to the plan view of a bird with outstretched wings

摘要

The hot-water bottle applicable as a collar has in empty state a shape similar to the plan view of a bird with outstretched wings. When filled with hot water and placed around the neck, its end sections (corresponding to the wing tips) come to rest on the collar bones of the patient, and reliably keep the bottle in place.