Abstract: Gastrointestinal probe (2) comprising a sensitive material (4) which is able to be connected to electrical or optical readout devices or measurement devices (10) such that the sensitive material (4) undergoes an irreversible change when it is submitted to the cumulative action of the external medium, in such a manner that the irreversible change can be measured and/or recorded by said electrical or optical readout devices or measurement devices (10).

Abstract: A flush valve having a fluid receiving housing having a first passageway, a fluid discharge housing having a second passageway, and a flow restricting device having a capillary tube defining a primary fluid flow path extending between the first passageway and the second passageway. An elastomeric sealing tube encircles and is biased against the exterior surface of the flow restricting device. A secondary fluid flow path extends from the first passageway to the second passageway between the interior surface of the sealing tube and the exterior surface of the flow restricting means so as to bypass the capillary tube. A connecting plate connects the fluid receiving housing to the fluid discharge housing. Projecting from the connecting plate, receiving housing, and discharge housing are individual pairs of clamping fingers that are longitudinally aligned to form a single U-shaped channel.