DEVICE FOR TRANSFEMORAL DELIVERY OF BALLOON-EXPANDABLE HEART VALVE PROSTHESIS Russian patent published in 2022 - IPC A61M25/10 A61F2/958 A61F2/24 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment; it can be used in cardiac surgery to replace affected natural valves of the human heart. A device for transfemoral delivery of a balloon-expandable heart valve prosthesis contains a balloon catheter with a balloon attached to it, an external catheter, in which the mentioned balloon catheter is located, a handle, a loading device, and an introducer. The handle contains a slider with a stopper, which ensures the movement of the external catheter relatively to the balloon catheter, and a screw with a nut connected to the balloon catheter, which ensures the movement of the balloon catheter relatively to the handle, sealing elements to prevent blood leakage, and a connector with channels for supplying liquid to the balloon and for passing a conductor. The loading device contains a nozzle to protect the heart valve prosthesis mounted on the balloon, a retainer for detachable fixation of the loading device with the introducer, sealing elements and a drain valve to prevent blood leakage and air entering the patient's blood. The introducer contains, on the distal side, a nozzle for insertion into a patient's body cavity, and on the proximal side, sealing elements for prevention of blood leakage, and a reciprocal fixing element for detachable fixation with the loading device. The loading device, on the proximal side, and the handle, on the distal side, are equipped with nozzles with holes for axial movement of the external catheter, which have the possibility of relative longitudinal movement relatively to each other with position fixation using a detachable fixation element.

EFFECT: invention increases the safety of transcatheter valve implantation without cardiac arrest and the use of artificial circulation by reducing injuries to walls of the vascular system, increases the reliability of fixing the heart valve prosthesis on the balloon, maintains high accuracy of positioning the heart valve prosthesis in the fibrous ring of the affected aortic valve.

5 cl, 5 dwg