DEVICE FOR REMOVING CONCREMENTS FROM HOLLOW ORGANS Russian patent published in 1997 - IPC

FIELD: medical engineering. SUBSTANCE: device has flexible catheter 1, wire extraction units being two pear-shaped baskets 2 and 3 with branches 4 and 5 made of material possessing thermomechanical shape memory properties fixed on flexible catheter 1 designed as electric cable, guide 6 with olive 7, bushings 8-10, coaxial plug 11 and controllable power supply source. Branches 4 and 5 of baskets 2 and 3 are connected with electric circuits 13 and 14 with common wire 15 and coaxial plug 16 with electric contacts 17-19. Branches 4 and 5 are coated with heat and electric insulation material 20. EFFECT: enhanced reliability and low risk of operation complications. 3 cl, 3 dwg