MEDICAL DEVICE FOR SACCULAR ANEURYSM TREATMENT Russian patent published in 2020 - IPC A61B17/135 A61F2/00 A61B17/12 A61M25/10 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to devices for treating saccular aneurysm of the vascular system. Medical device for treating saccular aneurysms comprises a metal expandable body having the possibility of long-term implantation in an artery or vein, and a node of a three-panel delivery catheter. Expandable body comprises a distal region, a proximal region generally located opposite the distal region; an intermediate region of transition from the distal region to the proximal region; a central axis extending proximally distally from the proximal region to the distal region; a wall extending, as a rule, continuously through an intermediate region from a distal region to a proximal region in order to define an external surface of the expandable body and an inner surface of the expandable body, wherein the inner surface defines a central cavity of the expandable body; and a proximal neck, a distal neck, a proximal cone-shaped tip, a distal cone-shaped tip, as well as one or more elastomer valves. Three-wide delivery catheter assembly comprises a longitudinally extending body further comprising a proximal end and a distal end generally located opposite the proximal end, wherein distal end of delivery catheter is operably connected to proximal area of expandable body; a first hollow component of the cannula which defines a first lumen which is continuous from a proximal end to a distal end and configured to receive a wire guide; a second hollow component of the cannula, which defines a second lumen to allow the passage of the fluid from the proximal end to the distal end and into the central cavity of the expandable body; and a third hollow component of the cannula, which defines a third lumen in order to allow the passage of fluid from the proximal end to the distal end and into the lumen of the blood vessel near the location of the expandable body; wherein the third hollow component of the cannula can be separated from the rest of the delivery catheter, wherein the expanded expandable body can be separated from the delivery catheter by moving the third hollow component of the cannula and the rest of the components of the delivery catheter assembly in different directions. One or more elastomer valves are configured to close the proximal neck or the distal neck when separated from the delivery catheter such that pressure within the central cavity of the expanded expandable body after separation from the delivery catheter is less than the pressure outside the expanded expandable body, or is equal to him. Expandable body is expandable from the delivered configuration into an expanded configuration, wherein the expandable body is attached to the delivery catheter by frictional fit without using glue, adhesive or welding. When the expandable body is in the supplied configuration, the wall receives a corrugated configuration containing folds folded in a clockwise direction relative to the central axis, or in a counterclockwise direction in relation to the central axis to form a folded area of the expandable body.

EFFECT: invention provides more effective and complete cessation of blood flow to saccular aneurysm, with lower risk of complications, more quickly and effectively seals the neck, and is more durable and has longer service life.

58 cl, 54 dwg