Abstract: The invention relates to an insufflator with a supply connection (22) and a delivery connection (14) and a pressure and flow measuring device arranged between said connections (14, 22) for determining measured quantities characterizing a gas pressure at a delivery connection and a gas volume flow at the delivery connection. The pressure and flow measuring device comprises a multilayer board (20) which comprises on its interior at least one flow channel (26) that is connected at its input to the supply connection (22) and at its output (8) to the delivery connection (14). Arranged on the board (20) are pressure measurement sensors (32, 34) and electronic components (4, 6) for the wiring of the pressure measurement sensors.

Abstract: The present invention concerns a circuit board (100) having at least one fluid passage (110) arranged in the interior of a circuit board (100), having a fluid passage opening (120) which is arranged on a surface of the circuit board (100) and which leads to the fluid passage (110, and a multi-part pressure-relief valve arrangement (200) for reducing an excess pressure in the fluid passage (110), which includes a first magnet (210), a second magnet (220) and a sealing closure (230), wherein the first magnet (210) and the second magnet (220) are so arranged that they press the sealing closure (230) on to the fluid passage opening (2120) by a magnetic force (250) afforded by the first magnet (210) and by the second magnet (220).

Abstract: The invention relates to an insufflator with a supply connection (22) and a delivery connection (14) and a pressure and flow measuring device arranged between said connections (14, 22) for determining measured quantities characterizing a gas pressure at a delivery connection and a gas volume flow at the delivery connection. The pressure and flow measuring device comprises a multilayer board (20) which comprises on its interior at least one flow channel (26) that is connected at its input to the supply connection (22) and at its output (8) to the delivery connection (14). Arranged on the board (20) are pressure measurement sensors (32, 34) and electronic components (4, 6) for the wiring of the pressure measurement sensors.