CANNULA DEVICE, ARTIFICIAL RESPIRATION APPARATUS Russian patent published in 2020 - IPC A61M25/00 A61M1/16 A61M1/36 A61M25/04 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medical equipment, specifically to cannula device (1) for blood circulation in an artificial respiration apparatus and an artificial respiration apparatus. Cannula device (1) comprises a first lumen (LA), called an aspiration lumen, comprising a passage allowing aspiration of a blood volume with low oxygen content. Device has a second lumen (LI), called an injection lumen, comprising a passage allowing introduction of a volume saturated with blood oxygen. Injection lumen (LI) and the aspiration opening (LA) are held connected to a part of their length. Said lumens are sealed relative to each other. Injection lumen (LI) is the only lumen of the cannula device comprising a deformable element (STN) at its distal end that is meshy so that passage of oxygenated blood through its cells. Said deformable element is retained on part of its distal end. Said deformable element (STN) has a first installation, called "transmission", and a second unit, called "retention". Transition from the first plant to the second unit is carried out by changing the diameter of said deformable element (STN). Artificial respiration apparatus comprises a cannula device. Apparatus has a pump designed to provide pumping at a given fluid flow rate. Said aspiration opening (LA) interacts with pump inlet through connection pipe (T1). Apparatus includes an oxygenator for feeding a portion of oxygen into the fluid. Oxygenator inlet communicates with the pump outlet through the second connection pipe (T2). Apparatus comprises a heat exchanger designed to feed oxygen fed by an oxygenator at a given temperature into a volume of fluid introduced into the injection lumen (LI) of cannula device (1) through a third connecting tube (T3). Said heat exchanger is connected with oxygenator and cannula device (1) via fourth connecting tube (T4).

EFFECT: technical result is providing the possibility of holding the cannula in place for a long period of time, ensuring stability of operation, holding despite movements associated with cardiac contraction.

19 cl, 12 dwg