| 摘要 |
A presence detector (10) for detecting the presence of a patient on a supporting surface under which the detector is located is provided. The detector comprises first and second longitudinally extending, conducting elements (12, 14) each having an arcuate, axial cross section. A convex surface of the second element (14) is located adjacent to, but spaced from, a concave surface of the first element (12). A longitudinally extending, concave biasing element (18) is also provided, a concave surface of the second element (14) being located adjacent to a concave surface of the biasing element (18). A sheath (26) having a rib (28) formed on one side thereof and having feet (34) connected to the opposing side thereof encapsulates the elements and means for connecting respective conducting elements to a controller is provided. |
