Monitoring assembly FHR.

Device with electrode assembly fetal heart rate, comprising: a drive tube (140) having a distal end and a proximal end; a drive knob (150) having a bore therethrough and is attached to the proximal end of the tube (140) driver; a block (108) electrodes located at the distal end of the tube (140) drive and similarly the same outside diameter, bearing block (108) electrode an electrode (112) spiral protruding distally therefrom and electrode (114) reference, each being connected to the electrodes to an end of a wire of a wire pair (102) extending proximally through the tube (140) impeller and through the knob (150) impeller each extending thread yarn pair at an opposite end thereof to a connector of smaller lateral than the inner diameter of drive tube extension; and a tube (180) guide having a distal end and a proximal end and internal diameter greater than an outer diameter of the tube (140) driving, in which a tube part (140) impeller is disposed within the tube (180 ) guide and block (108) and the electrodes are disposed within the distal end of the tube (180) guide and a proximal end of the tube (140) drive and control (150) impeller extending beyond the proximal end of guide tube (180); characterized in that the control (150) drive comprises a body (152) having a tab (162) abutting resiliently biased extending distally therefrom at an acute angle relative to the body (152), the tongue ( 162) abutting a shoulder (168) facing distally and a pin extending distally thereon, the pin (164) of the tab (162) abutting between the tube (140) driver being arranged and tube (180) leaning support guide (168) distally facing barb (162) abutting against a proximal end of the tube (180) guide.