PHONOCARDIOLOGICAL ATTACHMENT TO ELECTROCARDIOGRAPH

摘要

FIELD: medicine.;SUBSTANCE: invention relates to field of medical equipment and represents phonocardiological attachment to electrocardiograph. Attachment contains successively connected amplifier, unit of band filters and unit of analogue-to-digital converters. Attachment also includes control unit, core storage and matching amplifiers unit, whose outlets are attachment outlets. In addition, attachment is provided with measuring probe, consisting of metal case, inside which working and background microphones with inbuilt pre-amplifiers are located. Microphones are placed into sound locators and are connected via coupling capacitors with inlets of bridge circuit power supply diagonal, outlets of whose measuring diagonal are connected by means of screened cable with inlets of amplifier. Probe case is grounded via screening cable. Sound locators are made from sound-insulating material. Sound locator of working microphone is open from butt end side, and is closed from rear butt end side with layer of sound-insulating material. Sound locator of background microphone is closed from both butt end sides with layer of sound-insulating material.;EFFECT: application of the invention makes it possible to increase accuracy of registration of weak tones and noises of internal organs and vessels in humans.;4 dwg