An obstetric extraction apparatus (1), comprises: an extractor (10) having a distal element (101) and a proximal element (102) coupled thereto, the distal element (101) being configured to be docketed to a fetal head (FH), and the proximal element (102) being configured to be gripped by hand (HA) a beacon (11) configured to be attached stationary and separately from the extractor (10) to the birthing mother (MO) a sensor (12) mechanically coupled to the extractor (10) and configured to provide a force signal representative of an extraction force applied to the fetal head and a processor (13) communicatively coupled to at least the extractor (10), wherein the processor (13) is configured to receive the force signal and to carry out a value-based determination of a progress parameter set indicative of at least one of a distance (d) between the extractor (10) and the beacon (11) and a motion of the extractor (10) relative to the beacon (11).
