| 摘要 |
FIELD: medicine; cardiosurgery. ^ SUBSTANCE: invention can be used in cardiosurgical practice for left heart revascularisation for treatment of ischemic heart disease. Coronary catheter consists of basic catheter with central opening, balloon segment, which has balloon, and shaft for balloon blowing. Basic catheter, whose frame is made of flexible but strong and heat-resistant polymer, is equipped with metal bush with guide pin at the end. Bush is made from metal possessing high resistance and low heat conductivity for restraining electric potential and protection against high temperature of basic catheter polymeric frame, with possibility of translational and rotary motion in central opening, which has narrowing at distal end. Basic catheter is also equipped with rod electrode, made of strong metal, possessing shape memory, with possibility of translational motion inside bush. Shaft is made with smaller opening than in standard two-opening catheters, and is connected with air pump, subjected to control system. Balloon segment has length not more than 3 times and diametre of balloon stretching not more than 2 times exceeding diametre of affected coronary artery. Proximal end of rod electrode is connected to operating phase of high-frequency electrosurgical unit and together with metal bush with guide pin - to driving elements of control system. ^ EFFECT: myocardium revascularisation with low traumatisation of coronary arteries, performing revascularisation from different sections of left coronary basin, renunciation of using coronary guide for passing coronary catheter, revascularisation of small vessels of distal coronary flow and diffusely changed coronary arteries. ^ 5 dwg |
