Medical devices for use in cardiology for treating patients requiring the percutaneous dilation of tissue or vessel; medical devices, namely, tools for the removal of cardiac leads related to cardiac pacemakers from cardiac veins and tissue, tools for the removal of cardiac leads related to defibrillators from cardiac veins and tissue; medical devices, namely, tools in the nature of mechanical dilation sheaths or motorized dilation sheaths for the removal of cardiac leads, indwelling catheter...