EXTRACTOR FOR EXTRACTION OF URETER STONES Russian patent published in 2020 - IPC A61M25/00 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to extractor for extraction of ureter stones. Extractor comprises a bearing wire of steel wire, placed in a flexible tubular housing, working part of the bearing cable is made of metal with shape memory, having initial temperature martensitic transformation of 37 °C to 42 °C and receiving at heating above the martensite transformation temperature shape of the conical spiral, wherein below the martensitic transformation temperature the working part has linear shape, on the distal end of the flexible tubular body a metal tip is fixed, and on the proximal end of the flexible tubular body a control handle is fixed, the control handle is connected to the tip by metal control cables and the distal end of the flexible tubular body, end of the bearing cable coming out of the proximal end of the extractor, is bent in the form of a loop, which serves to push the working part out of the flexible tubular body, and also for its retraction into the housing, in handle there are electric heating elements for heating of working part, in distal part of flexible tubular housing there fixedly installed bushing, in front of control handle on housing there fixed is fixing handle.

EFFECT: disclosed extractor for removing ureter stones.

1 cl, 4 dwg