Minimal-invasive medical tool for removing kidney stone, has cores movably arranged opposite to each other, and force limiter provided on operating element for limiting force that is transmitted during engagement process

摘要

The tool (1) has an operating element engaged with a non-reinforced covering pipe (3) and another operating element (2b) engaged with cores (4) moving through the non-reinforced covering pipe, where the cores are movably arranged opposite to each other. A force limiter (6) is provided on one of the operating elements for limiting the force that is transmitted during engagement process. The cores are made of nitinol and provided with a sling tool and foreign body gripper, and the operating elements are fixed opposite to each other.