Abstract: The invention concerns a simple, inexpensive and small detector, particularly for use in the medical pumps, for detecting over-pressure in a pipe (1) and setting off an alarm when an over-pressure is detected. The detector for detecting over-pressure in the pipe (1) along which a fluid (3) flows may comprise a T junction (5) for deriving a fraction of the flowing fluid (3) from the pipe (1); at least one tube (7) wherein there is fitted at least one obturating member (9); and an assembly for detecting the displacement of the obturating member (9) in the tube (7) and for generating a signal in response to detecting displacement of the obturating member (9).

Abstract: The miniature peristaltic pump (1) of this invention includes a pump module (2) comprising a gear (11) arranged to drive a rotor bearing rollers, said rollers crushing locally at least one tube into which a medicinal preparation may be sucked in at the input (13) and expelled at the output (14) thereof. The gear (11) meshes with a pinion (12) forming part of a motor module (3) adapted to be mounted with or dismounted from the pump module. The motor module comprises a timepiece movement of the type currently employed in a wrist watch, such movement including a stepping motor, an integrated circuit, a quartz resonator and down gearing by means of toothed wheels. An energy cell renders the pump self contained. The pump is intended to be carried on the human body and thus renders unnecessary that the patient recline on a bed.