CAPSULE FOR DETECTING CHANGES IN THE SHAPE OF A BODY WALL

摘要

PHP 1242 1 19.3.80 A capsule for detecting changes in the shape of a body wall. An apparatus for detecting and measuring changes in the shape of a body wall (7) includes a detector capsule (31) adapted for attachment to the wall and pneumatically connected to a volume transducer responsive to changes in the internal volume of the sensor produced by changes in shape of the wall. The internal volume of the capsule (31) is partially defined by a flexible diaphragm (32) for engagement and complementary movement with the wall (7), the capsule (31) also containing a body (36) of resiliently deformable material which presses the diaphragm (32) into contact with the wall (7) regardless of the (convex or concave) shape of the wall.