METHOD AND SYSTEM FOR FACILITATING PASSAGE OF WIRE GUIDE THROUGH OCCLUDED DUCTS Russian patent published in 2015 - IPC A61M25/00 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine, namely to endoluminal procedures by means of special device. Probe, made with possibility of being introduced into duct, is applied. Probe contains working head, equipped with two tubular concentrically located electrodes. One of electrodes represents potential high voltage electrode, the other electrode represents grounding electrode. Said probe is made with possibility of electric connection with control unit for generation of high voltage pulses. Probe has cavity for reception of wire guide and at least one lateral hole for introduction of wire guide into said cavity. Wire guide is passed through cavity along duct until it reached occlusion. After that, probe id displaced with respect to wire guide to bring distal end of first electrode and distal end of second electrode into physical contact with occlusion. After that, high voltage pulses are supplied to first electrode and to second electrode to cause electric discharge breakdown between them until occlusion is, at least, partially destroyed and further passage of probe along duct becomes possible. Wire guide is displaced with respect to probe along duct towards required place. Method of endoluminal procedure is realised by means of the system, including probe, which has distal end and proximal end, working head, provided with potential electrode and grounding electrode, cavity for reception of compact cable; control unit for generation and control of high voltage pulses, supplied to working head electrodes; feeding cable for electric connection of probe with the unit. Probe is provided with hole for introduction through it of wire guide, represented by lateral hole. First cavity passes longitudinally through said case section with exception of distal region, and second cavity is made with possibility of receiving wire guide and stretches from said hole along distal region and along working head.

EFFECT: group of inventions makes it possible destroy occlusion of duct lumen with maximum efficiency due to exposure to high frequency pulse impact with minimal trauma to duct due to application of flexible guide, as well as provides possibility of tracing the place of guide location due to implementation of guide from metal.

27 cl, 13 dwg