Swivel range

back circle
Rubber washer circle.

Back circle - hollow rubber ring with a hole in the middle (Fig.). Back circle with screw-down valve to fill the air. Used for seriously ill with a tendency to education or already formed bedsores. Back circle is placed under the sheet so that subject to pressure area of the skin (usually the sacrum) accounted for over a hole circle. Swivel range inflate a Bicycle pump or mouth. In the latter case, the pre-frame valve wipe alcohol, and the hole covered with several layers of sterile cloth or valve wear a rubber tube. Fill with air washer, circle, it is necessary to watch, that he was sufficiently elastic, but not hard. In the absence of a stress circle for the same purpose can be used rubber bedpan (see).